Balancing the New Crankshaft with Tungsten, Without Proper Tools | 2 Stroke Tuning

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  • čas přidán 31. 07. 2024
  • Tonight we're rebalancing the new Doppler ER1 crank with tungsten slugs. Not much left now until the DIY rotary valve engine can be reassembled.
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  • Auta a dopravní prostředky

Komentáře • 266

  • @DoRC
    @DoRC Před 6 lety +13

    I've found that wrapping a piece of tape around the drill bit so that the bottom edge forms the depth limit makes for a much easier to see reference line than a sharpie mark.

  • @user-neo71665
    @user-neo71665 Před 6 lety +33

    I'm not into 2 strokes but mad respect for you. This is how guys used to do stuff before we could pick up a catalog or google parts. Back before there were hot rod parts for everything. It's good to see people that know how to use their heads and hands for something besides playing games on a cellphone.

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety +2

      +dj beard Thanks man!

    • @RockeyDAproductions
      @RockeyDAproductions Před 5 lety +1

      i dont know how to play games on a cell phone. or why you would want to.

    • @breezetix
      @breezetix Před 10 měsíci

      @@RockeyDAproductions Because it's fun for players/gamers. It's a hobby. Not all of them are lazy though.

  • @liamthedevastator
    @liamthedevastator Před 4 lety +5

    Great video! I feel way better about wanting to do this kind of work on my own. Demonstrating that craftsmanship still has a place in mechanical work is inspiring and much appreciated to make the task seem less-daunting.

  • @aliciaantoniadis9100
    @aliciaantoniadis9100 Před 6 lety +3

    Thank you very much. The videos are educational and really well filmed. I think you manage to accomplish miracles working with what you have. And also, I really like your Swedish accent! "Man tager vad man haver". The best of luck to you and keep it up!

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety

      +Nikos Antoniadis Thanks! I'm Norwegian btw(live 1km from the Swedish border tho)

  • @saqibnawaz5139
    @saqibnawaz5139 Před 4 lety

    Alarmingly amazing,sir u hav unanimously earned d title of two stroke surgeon general,Great work keep it up

  • @ludditeneaderthal
    @ludditeneaderthal Před 6 lety +4

    Removing spatter with a wood chisel... I thought I was the only one, lol! Masonry bits on hard plate is also one of my tricks, though I learned it for drilling safes (legally, of course). Wish I could subscribe twice now, lol.

  • @jdmjedi777
    @jdmjedi777 Před 6 lety +3

    Great work! Can't wait to see the scooter up and running again. Strange fact, we have the same name and I also use a flux core welder for many more things than I should.

  • @upsidedowndog1256
    @upsidedowndog1256 Před 6 lety +8

    Great job! Something to be aware of is the flex of the drill press table when you bear down on it. You do amazing things with the tools you use, its why I watch, your tolerances are top notch. Watch your videos from the side drilling and you will see what I mean. I have no good solution but only point it out in case you are not aware of it. Your results are excellent and the balance on that crankshaft impressive. I look forward to your next video.

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety +7

      +upside downdog Thanks! I'm aware of it. It looks worse than it is tho, most of the flex is the whole machine, not between the table and spindle. When I need things to be really straight I support the table with a jack.

    • @upsidedowndog1256
      @upsidedowndog1256 Před 6 lety +2

      2STROKE STUFFING
      Cool! That was the only solution I had myself

    • @xibidit
      @xibidit Před 6 lety +3

      put a plank from the table to the floor :) bushfixit

    • @Kimulstein
      @Kimulstein Před 6 lety +1

      If the top flexes, as he said, it may get worse actually. The top will still flex and the bottom is supported and will not. :S

    • @xibidit
      @xibidit Před 6 lety +1

      truth

  • @integral32gb
    @integral32gb Před 6 lety +17

    Small tip, instead of welding the slugs, sliver solder them.
    So much cleaner and post operation is just a wire brush.
    Recovering the slugs in the future is just as easy, heat up the area to melt the silver and they just drop out. Cheap too! Silver solder is rated to 70,000 psi, same as ER70 mig welding.

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety +1

      +cara vaggio Excellent advice, would've done that if I had a hot enough torch.

    • @sakalamaka
      @sakalamaka Před 5 lety +3

      for that u need to take the crank apart (depending on the rod bearing)

    • @lennym1273
      @lennym1273 Před 5 lety +3

      Yea there is no way in hell Silver solder is as strong as MIG welding...

    • @tortron
      @tortron Před 4 lety +2

      @@lennym1273 it's plenty strong. Ever tried pull a bicycle apart at the seams. The steel will tear before the join fails

  • @aaaabababa
    @aaaabababa Před 6 lety +3

    This is realy cool, although i won't do that with my own Cranks, we have an Enginebuilder in the next town witch did this for me a couple of times now.

  • @geofham8332
    @geofham8332 Před 6 lety +1

    Hi, great stuff, hope all goes well for the project.Thanks for posting.

  • @MrDjcamo29
    @MrDjcamo29 Před 6 lety +2

    Nice👌🏻 and good work! The spx will be flying soon

  • @MetroTubettaja
    @MetroTubettaja Před 6 lety +2

    Already a new video?? Awesome! Keep up the good work.

  • @obfuscated3090
    @obfuscated3090 Před 5 lety +5

    interesting video! Thanks for posting it.
    Two affordable tips:
    Especially since you use a drill press, get a set of machinists "center drills" to start your holes. They are much more accurate than twist drills for that task. They are also countersinks and they work in hand drills. You'll never want to start a hole with a twist drill again. They aren't expensive and make life easy! Machinists use them because they don't "walk" when drilling anything from sheet metal to heavy stock.
    If you need more usable depth in future blind holes, you can drill then finish with a "center cut" end mill. Individual milling cutters are reasonable online.

  • @oldschool823
    @oldschool823 Před 6 lety +1

    I would check for true, because the heat from welding may throw it off. Very helpful video thanks.

  • @kianobedoza922
    @kianobedoza922 Před 3 lety +1

    how do you decide on the weight of the inserts and the placement of the inserts on the crank web does this need calculations too? thanks

  • @Napsterdell
    @Napsterdell Před 5 lety +2

    how do you know where you need to drill the holes to balance it out?

  • @noshirirani6685
    @noshirirani6685 Před 6 lety +1

    love the cigar holder (0.25sec) onward , and the choice of single malt also. but dont try porting transfers 3 pegs down.

  • @nickigilbert7295
    @nickigilbert7295 Před 2 lety +3

    Hello, I'm on my daughter's CZcams account. I saw your video for figuring out a balance factor. I applied that to my 11 vertical Briggs & Stratton engine. The counterbalance was bad so I tried to rebalance it without the counterbalance. It's not perfect, but I'm happy with it for my first attempt. I just wanted to mention an idea that might make things easier for when you drill holes for the tungsten metal. Maybe you already are doing this, but just in case you aren't. When you make your punch marks on the one side of the crank to drill, how about using an 1/8" drill and drill a pilot hole all the way through both webs at the same time. Just so there's no confusion, let's say you mark the flywheel side of the crank web. Now you install the crank in your drill press and drill the pilot holes. While leaving the flywheel side up, keep drilling through the flywheel side and into the clutch side of the crank web. It's such a small hole that I wouldn't think it would goof up your weight set up, you may need to ad a couple millimeters longer tungsten metal to counterbalance the 1/8" hole. You can still drill so far with the correct size drill bit so your tungsten metal won't go through hitting the crank. But the main thing is this way you only have to do the careful measuring and marking on just one side of the crank. Once you made your pilot holes, you can drill your bigger holes on the one side then flip the crank to drill the bigger holes on the other side.

  • @jamesmckinstry2252
    @jamesmckinstry2252 Před 6 lety +1

    Thanks for your dedication keep um comeing buddy

  • @davespooney8472
    @davespooney8472 Před 6 lety +11

    If I were to perform such tasks on the crank in my bike I'd need a much bigger glass of rum. Great vid!

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety +5

      +Dave Spooney 😂 You can fill a small glass multiple times!

    • @davespooney8472
      @davespooney8472 Před 6 lety +1

      Yup, I'd need to! I'm not at the skill level of taking a drill to a crank - yet! Haa

  • @danosburn80
    @danosburn80 Před 6 lety +1

    I can see the table on your drill press deflecting downward when you put pressure on the bit... I use a scissor jack from a car under mine to help minimize that.. now the head of the drill press pushes UP.. lol..

  • @fgtldyjxgzyjxriceicr9880
    @fgtldyjxgzyjxriceicr9880 Před 6 lety +1

    Elsker videoene dine:D

  • @bobgrant-beer3020
    @bobgrant-beer3020 Před 6 lety +1

    Hello Alex. I see you have a great taste in single malt. Take care.

  • @mike3684
    @mike3684 Před 6 lety +2

    I would like to use the information I've gathered here to balance my motorized bicycle engine but I'm confused as to the application of the balance factor? I've got a balance factor, now what do you do with that info. How did you select the mass/amount of the tungsten and their locations? I would speculate that greater separation has to cancel out some of its mass e.g. 180 degrees of separation would have little effect on how that engine functions, and distance from the center of rotation could give the correct static balance but wouldn't that change with RPM?? Condensed question>> How do i use the balance factor and how do I select Mass, Location, and Distance form center of rotation?? Thanks!

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety +1

      Good question! Google around and I'm sure you'll find a better answer than I can give you. It's not too complicated in practice tho. If you're struggling with vibration your balance factor might be wrong, shifting it up or down should help. As there's so many variables, finding the right factor is usually done by trial and error.

  • @doktorjonsson3860
    @doktorjonsson3860 Před 6 lety +1

    If you want a flat bottom in the hole you can first use a drill to make a shallow hole. Then use the walls to guide a endmill down.
    Might work... When I do it I use a slightly sturdier drillpress/mill. Great work however! :D

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety

      +Doktor Jönsson Thanks! Was thinking of doing it that way, but was impossible in this situation cause the chuck would've hit the crank with a normal length endmill and I don't own any special long one's. If only I had a lathe I could have made an extension. One day!

  • @dirtygarageguy
    @dirtygarageguy Před 6 lety +8

    Just a quick question Alex - is there a reason why you didn't seperate the crank halves instead of doing it as an assemblt?

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety +7

      +The Workshop One simple reason, I don't own a press.

    • @linoaque2471
      @linoaque2471 Před 6 lety +5

      My 2 favourite YT creators 😊😊😊 keep up the good work guys

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety +4

      +Lino Aque Thanks!

    • @NowAndyPlays
      @NowAndyPlays Před 6 lety +2

      you see, you just hold a gun up to the hydraulic press channel guys head and he will do it

    • @NowAndyPlays
      @NowAndyPlays Před 5 lety

      @NoNoNoNii Yes and alex lives in Norway

  • @mohdsyahid5612
    @mohdsyahid5612 Před 5 lety +1

    What percen balance good 60% up

  • @hopsgarage5513
    @hopsgarage5513 Před 6 lety +1

    I can't lie, I saw the drill chuck hit the crank and I became squeamish..lol. great vid and awesome content.

  • @masdbo
    @masdbo Před 4 lety

    I have learned a lot watching your videos, but the real reason I searched You Tube was to find out what to use when "stuffing my crankshaft", maybe I got the term wrong, but I am interested in filling in the very large unused holes in my crankshaft. Can anyone advise what epoxy or what to use for that. I have not seen it in your videos so far. thanks

  • @bps.1
    @bps.1 Před 6 lety +1

    i would also like to know on a 1986 kx 500 that has a big bore of 94mm the piston is pretty big and i would like to make it lighter if i was to drill holes in the piston skirt would that be a good idea

  • @jacobobarcones7605
    @jacobobarcones7605 Před 4 lety

    hi two stroke stuffin why dont aligerate the alternative masss ???¿ i think is more less worck , but i now this tugsten wheigth a lot. good job see you again..

  • @flyboyfs
    @flyboyfs Před 6 měsíci

    nice work, what if one does it balance 100% factor , how will it run properly for racing

  • @mongui89
    @mongui89 Před 6 lety +2

    amazing!!! How about the mods of the motorized bike? thanks for your videos!!!!

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety

      +Angel Monguilod Ezquerra Thanks! New video on the motorized bike coming soon!

  • @cope7835
    @cope7835 Před 6 lety +1

    Great Videos!! What to see more!
    -where is the coolant while drilling?

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety

      +Alan Turusev Thanks! Yeah, I should use some coolant.

  • @donewithyoutube275
    @donewithyoutube275 Před 11 měsíci +1

    dont take this the wrong way but with all the other machining channels out there ive been losing hope that i will ever be able to afford to make nice things myself due to all the tools needed to achieve precision. but with your channel its like the oppisite sometimes, you teach how to be as unpresise as possible while still doing great work. this is what we need more of. no everyone can afford a milling machine but a drill press is alot more in reach.

  • @marvinmena1310
    @marvinmena1310 Před 2 lety

    La friccion de los anillos, no se toma en cuenta a la hora de balanceado. Porque bien representa ressistencia al tiempo de trabajo. Solo es una duda.

  • @ridefast591
    @ridefast591 Před 6 lety +1

    So where do u get slugs for cheap...i ordered tungsten slugs for pinewood derby cars they are 3/8 diameter by 7/16 1/2 ounce each I am hoping to use them to balance my gas bicycle crank but am not sure how to test the weight on the crank to find out where exactly to place it.

  • @coffeepisi5173
    @coffeepisi5173 Před rokem

    I wana ask you somthing about this subject.
    The round cranck shaft is better then the semiround one?

  • @johnpauldavid9626
    @johnpauldavid9626 Před 5 lety +1

    can i ask? what is the problem of my crank.. i put my crank in crank shell and after that i tigthen all bolts and after that. i rotate the crank is hard to rotate not totally spinning freely.. what can i do? btw my engine is honda dio 1 .. thanks!

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 5 lety

      Try giving it a few gentle taps with a soft hammer on each side, should help it settle in the bearings.

  • @ridefast591
    @ridefast591 Před 6 lety +1

    Any videos on assembly?...i have a hell of a time keeping the crank true and getting assembled proper as the bearing cups and shaft fit is so tight...what do you think of sanding cup and or shaft so that the assembly is not so tight say a snug fit that i would pull through the case with not too much effort I could feel it bottom out and stop pulling.

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety +1

      Freeze bearings and heat case, or do what I do on race stuff: czcams.com/video/FYiWreVyZMc/video.html

    • @ridefast591
      @ridefast591 Před 6 lety +1

      2STROKE STUFFING thanks just the video I was looking for...will try the heat and cold if it is a pain I will remove some metal.

  • @tellmesomething2go
    @tellmesomething2go Před 6 lety +1

    Was just wondering. These after market big-bore kits. I was wondering if these manf. compensate for, say, a 49cc piston. Or, another good idea, for the diy`r. If your adding a big-bore, why not weigh the 49cc assembly, and then weigh the bb assy. See if you can machine some material off the bigger piston, in order to bring it into balance. Just a thought.

  • @pauls5745
    @pauls5745 Před 6 lety +1

    instead of adding tungsten or mallory metal to the rotating mass, why not remove some at 180 deg to where you would place the weights? Also curious if the rod and piston installed needs to be factored in for a precise rotational balance

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety

      Because there's nothing left to remove without compromising the big end press fit. The piston is reciprocating mass only and can be left out, the rod is a gray area as it's both rotating and reciprocating.

  • @user-ts4wd4qt9p
    @user-ts4wd4qt9p Před 5 lety

    Are there other material that can be used as counterweights other than tungsten? I can't find any hardware store that sells tungsten slug in my city.
    thinking about using lead and epoxy but i'm afraid it won't hold the heat

    • @rbarnes8169
      @rbarnes8169 Před 5 lety +1

      You can use Lead and then press fit a plug on top. I would also stake or tack weld the plug in place just for peace of mind. Lead melts around 600°F

  • @Keafearless
    @Keafearless Před 2 lety

    Hi Bro. I just upgrade my bike MSX125 with big bore kit, the balancing factor is only 20%, how do you think a bout this?

  • @c52ned
    @c52ned Před 5 lety +1

    Do u need some special wire or gas to weld the thungsten to the cranck

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 5 lety +1

      Probably, but I used the regular stuff and it's held up so far.

  • @jiedanloriaga8945
    @jiedanloriaga8945 Před rokem

    hellow sir goodevening can i ask one question?
    it is a random hole in the crank web? that you put the tungsten .. or there are some point that have to be drilled?

  • @dbxlkevsmith787
    @dbxlkevsmith787 Před 4 lety

    Maybe I’m mistaken but I need you to explain something. Don’t you have to take the weight of the piston the needle bearing the total weight of it fully assembled into consideration because I just saw you test it with just the connecting rod on there

  • @lithium534
    @lithium534 Před 3 lety

    just been looking at your old videos.
    Why don't you use loctite 601. It's good for more then 300 degrees and won't come loose and if you want to change you can heat it up and change them for different size for other piston weight.

  • @gbshsthese7237
    @gbshsthese7237 Před 4 lety

    That is ecxactly for bigger piston, you 're right

  • @HolderDon
    @HolderDon Před 6 lety +3

    Don't you have to subtract the amount of metal removed from drilling and then increase weight?

  • @jonnyrox116
    @jonnyrox116 Před 6 lety +1

    I just have to ask, doesn't those long shafts on that crank create harmonic imbalance as opposed to a much shorter shaft? Seems to me that the closer to the con-rod the output shaft is the less flex.. we both know it's a fact..just looking for your input on the matter. Thanks.

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety

      +Jon Rothenbusch Absolutely, another bearing outside the variator would probably help but it's hard to do.

  • @gbshsthese7237
    @gbshsthese7237 Před 4 lety

    How weight one piece of tungsten

  • @davesmith9325
    @davesmith9325 Před 3 lety

    Its depressing that the table on the drill flexes downwards so much when you push the drilling pressure (as you should !) .. this.means holes wont be square. In the absence if a stronger drill machine, can you support the table with a bit of wood (or better a jack ?)

  • @rosariocorreia6961
    @rosariocorreia6961 Před 6 lety +1

    Hello I have a question I have a Piaggio nrg from 1995 with a cylinder head bsg1 with 2.8 kW full stock and a NRG from 1996 with cylinder head bsg4 full stock 2.2kw wath os the difference? Can you help? I am restoring both

  • @satt131313
    @satt131313 Před 5 lety +3

    Use a little cutting oil on that drill.

  • @taurus9916
    @taurus9916 Před měsícem

    Great video, can you please tell me whats the weight factor of Kawasaki GTO 125

  • @davidmorrill6740
    @davidmorrill6740 Před rokem

    Kool thanks

  • @Imageloading...
    @Imageloading... Před 5 lety +1

    What kind of metal are the slugs? With the crank being case hardened, you must need some very dense material as slugs

  • @Skruwi
    @Skruwi Před 6 lety +2

    Awesome

  • @gbshsthese7237
    @gbshsthese7237 Před 4 lety +1

    Where did you buy them? Tungsten?

  • @vinosetyawan8305
    @vinosetyawan8305 Před 5 lety

    it is added to weight or the crankshaft is light

  • @costadelsol1163
    @costadelsol1163 Před 5 lety +1

    Can someone tell me the name of the "paint" that he uses on 3:30? Thanks

  • @patriciodebesa5761
    @patriciodebesa5761 Před 4 lety

    Hi. I am from argentine and my english is poor.i want to ask you if this crankshaft is for a scooter or what type of motorcycle?

  • @vladimirvitalin3128
    @vladimirvitalin3128 Před rokem

    Pal - how you decided the weight you put into crank??? I am working with that more then 25 years and really know this is now easy sometime to decide that even having the special "formula" which helps to calculate a proper weight.
    BUT - you have to know first for what an engine will be used (cross, enduro, road race), which RPM's are more usefull for rider, what the rider like to use more - power or torgue, weight of the complete piston and piston pin with a circlips, "related" weight of the small end of a connecting rod and some other data to calculate so called "balance factior"... Then it takes just 30 minutes to find the weight and the place to put it into the crank using the "bladed base"... and then about 2 hours or so to install the weights, assembly the crank and true it... Easy... if you know what and how should be done (better - properly)...

  • @vq37vhr12
    @vq37vhr12 Před 6 lety +2

    What would happen if you were to run the stock balance ?

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety +1

      +Vq37 VHR I tried that with the old crank, it was extremely uncomfortable to hold the handlebars and it was spewing fuel out of the carb overflow and vents.

    • @jttech44
      @jttech44 Před 6 lety +3

      You lose RPM because of the vibration. With smaller motors, less RPM is less power and more wear.

  • @TheLtVoss
    @TheLtVoss Před 6 lety +2

    Nice video but instead of welding the tungsten slugs in u should use jb weld to glue them in place
    One point is that the heat treatment gets destroyed by the heat from the welding and the part could bend also from the heat

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety +2

      +Fabian Mueller Thanks. True, but with limited heat input from the few short tacks it seems to work fine, at least it did last time. And welding just feels a bit more "right", should've been tig tho.

  • @longtat6587
    @longtat6587 Před 5 lety

    What are you replacing instead?

  • @MM-zb1uj
    @MM-zb1uj Před 3 lety

    Hej....Hilsen fra Danmark..Godt nytår...... Kan du skifte
    vevaxelens vevstake på en Suzuki FZ 50 moped??....( Jeg bor i Frederikshavn.)

  • @mesheallayno9338
    @mesheallayno9338 Před rokem +1

    Sir good day can you help me design for crankshaft balance for 2 stroke engine Yamaha rxt 135 my piston is 59mm I'm the dragracer her in Cebu Philippines thanks xto your help

  • @brandonquenneville7330
    @brandonquenneville7330 Před 6 lety +1

    Why the added weight? what was the issue before adding slugs?

  • @woodytaylor4020
    @woodytaylor4020 Před 5 lety +1

    Germany makes the finest bearings.

  • @naveedaka
    @naveedaka Před 6 lety +1

    sir...how to calculate the weight that has to be added...??

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety

      The quickest way to find the right weight is to hot glue mass to the crank in the position you would drill the holes. Remember to add back the weight of displaced material after drilling the holes.

  • @basslinejunkie2776
    @basslinejunkie2776 Před 6 lety +2

    The workshop sent me here

  • @bairescycles7501
    @bairescycles7501 Před 4 lety

    That weight is the hung weight ?

  • @maxdad05
    @maxdad05 Před 6 lety

    no cutting oil?

  • @aljangorosin5691
    @aljangorosin5691 Před 6 lety +1

    Got a question, How did you know where to place the insert?.

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety

      Trial and error with magnets, should've shown that in the video.

    • @robivlahov
      @robivlahov Před 5 lety

      @@2STROKESTUFFING that's the most important part my man hahaha its not hard to drill nor weld, but figuring out where to put the weights is hard. I want to install an 70cc kit, but I know the stock crank won't last, need to make the crank heavier (as top performance did in the crank that's made for that kit)

  • @longtat6587
    @longtat6587 Před 5 lety

    What are those round balls instead?

  • @szymonsiedlanowski6144
    @szymonsiedlanowski6144 Před 6 lety +1

    Where do you source the tungsten slugs from?

  • @julianlaustsen1991
    @julianlaustsen1991 Před 8 měsíci

    hva er poenget med det her? veiva kommer vel ferdig balansert?

  • @mikkelsrensen8567
    @mikkelsrensen8567 Před 6 lety +1

    great videos dude. but pleas use safety goggles when you drill. 9:00 dude. your lucky nothing happens. keep up the good work:)

  • @erendmnl5380
    @erendmnl5380 Před rokem

    4 parça kaç mm ağırlığında adet olarak

  • @mikem5475
    @mikem5475 Před 6 lety +1

    More motorized bike videos please! So many people have those things but they are so badly tuned from factory, and I know you're very skilled and have so much knowledge to share about it

  • @250398todorovic
    @250398todorovic Před 6 lety +7

    more motorized bicycle vids!!!

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety +1

      +Stefan Todorovic Coming!

    • @250398todorovic
      @250398todorovic Před 6 lety +2

      i love seeing how small changes in tuning results hp increase, because I experimente with tomos mopeds and port them, it really helps me.Greatings from Serbia!

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety +1

      +Stefan Todorovic Greetings from Norway!

  • @kidehilario
    @kidehilario Před 6 lety +1

    Can I ask sir... What if you have put to much of that tunsten in your crankshaft how would your engine behave?

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety

      It will vibrate badly.

    • @kidehilario
      @kidehilario Před 6 lety +1

      That was a fast reply... And it's good.. I'm not a mechanic so I don't understand how to do a proper crankshaft balacing... I watch your crankshaft balancing video and I can't understand how that works is the heavy part of the crankshaft suppose to be heavier than the weight of your Con rod with piston plus pin plus piston rings or is it the other way around?

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety

      It's the other way around, about 60% is what gives least unbalanced force overall but not necessarily what works best depending on frame geometry, cylinder orientation etc

    • @kidehilario
      @kidehilario Před 6 lety

      So good sir it's safe to say that .. the weight of the con rod end plus the weight of the piston piston pin etc should be heavier than the heavy solid part of the crankshaft.. my engine is 4 stroke single piston and the cylinder block is oriented horizontally... I think your knowledge is also applicable to 4 strokes since its also has a round crankshaft

  • @hedning003
    @hedning003 Před 6 lety +1

    materialmässigt-hur mycke mer vikt får du på veven i förhållande till stålet du borrar bort?...some1 might want it in english.. how mych more weight do u get whit the tungsten compared to the steel you drill out

    • @hedning003
      @hedning003 Před 6 lety +1

      i woud also have used something like locktite 638 in the boreholes

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety +1

      +hedning003 Tungsten is about 2.5 times heavier than steel. Approximately 9.5x13mm steel displaced = 7.2g, 9.5x10mm tungsten added = 13.7g. 13.7 - 7.2 = 6.5 Each plug increased weight by around 6.5g, 26g in total.

    • @hedning003
      @hedning003 Před 6 lety +1

      26g off out of the box ...that's a lot-thx for the info

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety

      +hedning003 It's not that it's "off", just the wrong balance factor for my application. Though less than 20%(and that's with my lightweight 40mm piston) is pretty strange.

  • @renzowen
    @renzowen Před 6 lety +2

    Your definition of press fit is different than mine apparently :p Just kidding! I love your channel it really inspires me to tune my own 2 stroke engine and make a racing monster. I wanna make a go kart but i'm from the Netherlands maybe someone can help me where i can find go kart parts like the axle and wheels.

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety +1

      +renzowen haha, yeah. The theory didn't exactly reflect reality here. Didn't check the holes but the 9.5mm bit did not drill 9.5mm holes(no surprise really, wish I owned some reamers) the slugs were of varying size too, but I found four of roughly the same size, not that it mattered with that fit...

    • @larskompaan429
      @larskompaan429 Před 6 lety

      renzowen bouw tweetakt motor in crossbrommer heb je meer lol.

    • @renzowen
      @renzowen Před 6 lety

      Nee heb al vaak dingen met 2 wielen gehad. Wil nu graag een kart maken als las project.

    • @ikilforkut
      @ikilforkut Před 6 lety

      @renzowen wil dat ook al een tijdje... beste is gewoon een 2de hands frame kopen op marktplaats

  • @bps.1
    @bps.1 Před 6 lety +1

    hi alex if i was to send you my crankshaft would you balance it for me and how much would you charge

  • @torgunnarfjlstad156
    @torgunnarfjlstad156 Před 9 měsíci

    "Carbide slugs"? Where you get them?

  • @MariusHA84
    @MariusHA84 Před 3 lety +2

    I like your videos and the pragmatic approach. But please: use protective goggles while drilling, milling or grinding! The more people watch your videos, the more you have to lead by example.

  • @arcticblack3764
    @arcticblack3764 Před 4 lety

    Why did you choose Doppler?

  • @johnwickens6480
    @johnwickens6480 Před 5 lety +2

    do a 2 stroke chain saw motor

  • @macmotorizedbike3834
    @macmotorizedbike3834 Před 5 lety +1

    Does the balance crank increase horsepower?

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 5 lety +1

      Not really, but it keeps fuel from spewing out of the carb and bits falling off.

  • @miratorgfood
    @miratorgfood Před 2 lety

    Laphroaig one love ❤️

  • @edwinlehman2841
    @edwinlehman2841 Před 3 lety

    How come you didn’t just lighten up the rod side

  • @rotazracing4635
    @rotazracing4635 Před 6 lety +2

    Why not just use an interference fit ? you would not have to use that flux core mig and would look a lot more cleaner and easier.

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety

      +Rotaz Racing Cause I don't own a reamer in the correct size.

    • @jttech44
      @jttech44 Před 6 lety +2

      Probably a non issue, but the easy way would be to pin the holes closed with a punch and hammer. There isn't much lateral force on this and it's high friction from how it's spinning.
      Also looking clean isn't an issue, it's inside of a crank case.

  • @noenlunde7028
    @noenlunde7028 Před 5 lety +1

    Du kan smelte inn bly i hullene som du borer som balansevekt på veivakselen også, Kawasaki brukte nå det.

  • @bobgame7585
    @bobgame7585 Před 3 lety

    Tungtsan how miligram

  • @Zorgen2
    @Zorgen2 Před 6 lety +1

    hej, kan du inte köpa en kina 49cc 2takt motor från ebay för ca 600kr. sedan bänka motorn original. och sedan modifiera den för max effekt. :)

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety

      +Rickard Jakobsson Sjekk ut "motorized bike" videoene mine!

  • @tristantruebody9793
    @tristantruebody9793 Před 6 lety +7

    Burt Munro of two stroke engines

    • @2STROKESTUFFING
      @2STROKESTUFFING  Před 6 lety

      +Tristan Truebody Thanks for the compliment😁 Was a great guy!

    • @FirstLast-tx3yj
      @FirstLast-tx3yj Před 3 lety

      @@2STROKESTUFFING hey man nice video.
      Does adding the tungsten on the counter weight further away from the axis of rotation of the crank has more effect than adding it close to the axis of rotation??