I Blew Up An Avenger 85 Motorized Bicycle Engine For Top Speed Runs

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  • čas přidán 20. 03. 2024
  • To be honest I just didn't care to own another saw build. I was wondering what the kit could do under the most ridiculous possible conditions to get a top speed run out of it. So I blew one up trying LOL Engine ran 1 breakin tank of gas. Stock top speed run. And 2 Top speed modified runs before it when supercritical! I hope you enjoy!
    #bike
    #video
    #diy
    #rider
  • Auta a dopravní prostředky

Komentáře • 78

  • @justanothermotorizedbikech5138
    @justanothermotorizedbikech5138 Před 4 měsíci +9

    Are you meaning to tell me they made an engine that spins almost 12k with stock 80cc rod bearings? If so that’s wild!!

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +2

      lasted 2x 11 second pulls anyways lol! engine is completely blown up at the end of the second run. you can hear it explode!

    • @bryduhbikeguy
      @bryduhbikeguy Před 4 měsíci +2

      Apparently Not..LoL.

    • @justanothermotorizedbikech5138
      @justanothermotorizedbikech5138 Před 4 měsíci

      @@BuildBreakFix Thank you for sharing bro I appreciate you🚴🏼‍♂️💨💨

  • @2strokecarbtuningportingin187
    @2strokecarbtuningportingin187 Před 2 měsíci +2

    As long as you imput the actual measured rolling distance of your tire there accurate. Need a few pieces a tape on your floor measured one full revolution I referenced the valve stem.

    • @BuildBreakFix
      @BuildBreakFix  Před měsícem

      Hey! Was just at your live. Why did you mute me 😔

    • @BuildBreakFix
      @BuildBreakFix  Před měsícem +1

      Yes. Cheap Chinese Speedo. Says can be off + or - 3 mph. For a 26" wheel. But it did concur with cell phone mph listed so it was close.

    • @2strokecarbtuningportingin187
      @2strokecarbtuningportingin187 Před měsícem

      @@BuildBreakFix I 100% would not mute or block you

    • @2strokecarbtuningportingin187
      @2strokecarbtuningportingin187 Před měsícem

      @@BuildBreakFix crap man how do I check my settings 100% your allways welcome to comment on my live. It was kinda good live somehow got to talk to guys from Egypt and India

    • @BuildBreakFix
      @BuildBreakFix  Před měsícem

      @2strokecarbtuningportingin187 It said (user is on mute mode) I stopped in to say hi. Couldn't enter live chat. Maybe just glitch then.

  • @isaacbrown511
    @isaacbrown511 Před 4 měsíci +3

    In a way worth it, awesome man.

  • @10siWhiz
    @10siWhiz Před 2 měsíci +2

    I have a 26 and 28t laying around and I thought those were dummy small

    • @ericpedigo685
      @ericpedigo685 Před měsícem

      The thing is is that with these smaller sprockets I've noticed that the top ends tend to last quite a bit longer as long as the bike has enough torque to pull you up to a comfortable cruising speed it's going to prolong the life of the engine because it's running in a lower RPM range at least that's my theory I swear by the 28 tooth sprocket

  • @jray4957
    @jray4957 Před 4 měsíci +2

    Damn BFB that was fast for that engine..I had no idea 😂

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +1

      Ported the hell out of it lol. Chamber pipes it with reed Valve 15x15mn windowed position

  • @1RickSanchez
    @1RickSanchez Před 4 měsíci +2

    Do u know what went first? I suspect the lower con rod bearing?

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +1

      Neither con rod breaking existed after that ride

  • @dattstoneddad3089
    @dattstoneddad3089 Před 4 měsíci +2

    Would you say these are reliable after this ? If sticking to a 36t sprocket

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +2

      Stick to 36t . Keep it mostly 3/4 throttle and the thing will last for a long time. My only suggestion is to replace the wrist pin bearing with Ms380 or Ms 460 bearing like most suggest. One provided is very side play. Other then that seems legitly Rick solid.

  • @ignaciosalazar3055
    @ignaciosalazar3055 Před 4 měsíci +3

    👍

  • @kjsmolik
    @kjsmolik Před 4 měsíci +3

    You said 10300rpm, 10t front, 22t rear, 26 in wheel? Your math is off. Thats 88mph . With your speed at 66mph you are pulling 7700rpm..

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +2

      No dought its off and that clutch was smoking after. It was slipping like hell as it blew up. Just a stock clutch. Wasn't investigating much time in another saw build. "It's in the description". But yeah if it hooked up solid @ 1:8.2 and 1:1.2 ratios comes out to 87.6 actually on 12.6rotations per 1mph for the wheels on the bike. 👍. I think it could of got there is wrist pin crank bearing made id few 100 more yards. Or may of been at its limits all it has to give.

    • @ericpedigo685
      @ericpedigo685 Před 4 měsíci

      I have a 100cc engine with a 49 mm bore and 40.2 mm stroke with an AF80 connecting rod and high hole piston I had two base gaskets on it and I replaced it with thin one but now I'm only using half of my exhaust port with a 32 tooth sprocket and I'm only pulling 30mph with heavy four-stroking at wide open throttle, if I sent a video and pictures of the motor would you have any information as to how I could resolve said issue, I'll even cash app a few dollars for your time

    • @kjsmolik
      @kjsmolik Před 4 měsíci +1

      @ericpedigo685 you know 40mm x 49 isn't 100cc right

    • @kjsmolik
      @kjsmolik Před 4 měsíci

      @@ericpedigo685 4 stroking is rich jetting. Need to jet down.

    • @kjsmolik
      @kjsmolik Před 4 měsíci

      @@ericpedigo685 and 32t is way to small

  • @KB_Joys
    @KB_Joys Před 4 měsíci +2

    Damn, what pipe - did you have? Lol

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +1

      Mz65 clone

    • @KB_Joys
      @KB_Joys Před 4 měsíci

      @@BuildBreakFix id imagine that you had to chop and weld a header.
      There's some talk about the pipe from Gomax. But there was a guy saying that it didn't fit. He was using the CNC mount and I had said, why are you using the CNC mount? Because it looked to me that he could just mount the Avenger right to the frame and it would seem that it would fit
      Anyways he didn't get back with me, so idk...

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +1

      @KB_Joys all I did was cut off saw the 80cc type header off and cut a square steel plate with 3 holes in it and welded it on. One for the port and 2 bolt holes with a step bit. Nothing fancy just functional

    • @KB_Joys
      @KB_Joys Před 4 měsíci

      @@BuildBreakFix I had a thought something like that.
      Because the muffler comes off.
      I still have a jog pipe that I haven't used, was thinking maybe to try to rig it up like the expansion chamber pipes that have the loop around the frame, then go up to the side.
      Further reading someone said that id need a reed to gain all benefits.
      Might just stick with the original muffler, but I still have a jog pipe, never used.

  • @alexandergutierrez5244
    @alexandergutierrez5244 Před 4 měsíci +3

    Can't wait for the build good stuff

  • @mikemiller3303
    @mikemiller3303 Před 4 měsíci +2

    That's awesome fast brother you want to go faster get a motorcycle lol you know I just watched a video you put out 1 yr ago about the importance of properly breaking in a engine and you took it apart and showed the piston all scorched and said this was no good for new engines now you know what happened to your avenger 85 to hard to soon same thing they were doing to the phantom 85 cause I have a phantom version 2 with around 2000 miles on her running great cause your only sapossod to run a 2 stroke 90% of its full power at least that's what my Suzuki mechanic used to tell me that back in the 70es I Googled it and it holds true today as well says they start running to lean thanks for the experiment ride safe

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +2

      I blew it up on purpose to be honest 😆. I just wanted to see how long one really would last. Didn't think half the claims where true. It does do 66mph that I can confirm 😂 for 24 seconds

    • @michaelbrinks8089
      @michaelbrinks8089 Před 4 měsíci

      ​@@BuildBreakFixGood engine durability test 👍 😂 It would have been cool to also see stock cyl head temps with a guage. To see if high temps played any role. Next video could be engine teardown to look for scoring on exhaust side from overheating.

    • @rcadventures4342
      @rcadventures4342 Před 4 měsíci +1

      @@BuildBreakFixall in the name of science, very impressive thanks for your sacrifice…

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +1

      Always wanted to floor one of these. See what ya can get out of it before insides come out of it 😆

    • @rcadventures4342
      @rcadventures4342 Před 4 měsíci

      @@BuildBreakFix it has potential with the right upgrades

  • @thefunniestfarm4731
    @thefunniestfarm4731 Před 4 měsíci +4

    This is what shift kits are for :P

  • @a.m.bgarage.everydayprojec9665
    @a.m.bgarage.everydayprojec9665 Před 4 měsíci +2

    Heck yeah. You cant push the limits without pushing past them every once in a while. I wonder if it would actually have enough torque to use that 22 tooth if you got a beefier clutch on that thing (probably not).

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci

      I did! That was 22t. Green pads 3 springs, 800lb of springs on saf clutch!

  • @michaelbrinks8089
    @michaelbrinks8089 Před 4 měsíci +2

    That song "Push It To The Limit" from Scarface should have been playing on ride #2 😂

  • @bryduhbikeguy
    @bryduhbikeguy Před 4 měsíci +3

    It was running....and runni...and Boom...whine,screech...Seize... I wonder. Will Gumout help??..LOL....

    • @bryduhbikeguy
      @bryduhbikeguy Před 4 měsíci +2

      Glad you're smiling too.

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +1

      I knew it would explode 😆. Was for science 😂

  • @FMonster1550
    @FMonster1550 Před 4 měsíci +2

    66 mph is fast no lie about that one

  • @KB_Joys
    @KB_Joys Před 4 měsíci +2

    😲

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +1

      💪😉

    • @KB_Joys
      @KB_Joys Před 4 měsíci

      @@BuildBreakFix 65 mph. Scary fast on a rigid bicycle, lol crazy azz 😂

  • @RaoulDuke224
    @RaoulDuke224 Před 4 měsíci +4

    Why are you trying to kill yourself with Speed?!

    • @RaoulDuke224
      @RaoulDuke224 Před 4 měsíci +3

      That poor motor you ruined it 😭

  • @artofdisguy3401
    @artofdisguy3401 Před 4 měsíci +2

    Let's face it these motors ARE just not ment for all out top end speed runs,, they disintegrate..
    But if you run them at mid rpm, they last

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +1

      Bottom line is red line is 6500rpms and lower. This engine blew up 10k in 2 x 12 second pulls 😂. Yeah if you keep it mid way throttle few fun rips it will last very long time.

    • @ericpedigo685
      @ericpedigo685 Před 4 měsíci

      I had an open transfer 80cc that I ran wide open throttle with a 36 tooth sprocket on 26-in wheels at 37 mph for about a year it was the cheapest one they sold on wish for $120 as a kit that thing had a tendency to snap rims as well All I did was open the exhaust at a carburetor and a redneck ram air intake to fight the vacuum behind the motor

  • @AceBase5
    @AceBase5 Před 4 měsíci +2

    So 32 tooth and under 7k rpm

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +1

      Already did that! 47 mph! Stock out of the box.

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci

      Last video speed runs where stock*

    • @AceBase5
      @AceBase5 Před 4 měsíci +1

      @@BuildBreakFix you think you could hit 50mph with a stock motor but upgraded exhaust

  • @pisstoffcat5136
    @pisstoffcat5136 Před 4 měsíci +2

    Damn that's stupid fast for a bicycle 🚲 .

  • @Paul_Gale
    @Paul_Gale Před 4 měsíci +2

    i believe "bicycle tires" are designed to hit 60 mph without coming off.
    maybe it good that the motor died instead of you!

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +1

      E bike rated wheels and tires. 65mph. So yeah we are for sure on the edge.

  • @grendelsgarage9723
    @grendelsgarage9723 Před 4 měsíci +2

    Holy Mary, mother of your gods... 😮😮😮😮😮😮😮 the Avenger 85 in the hands of a master 🙌.... kinda scary 😅😅😅😂😂😂😂😂🎉🎉🎉🎉🎉 thanks for sharing 👍 😀 😄

    • @BuildBreakFix
      @BuildBreakFix  Před 4 měsíci +2

      Lol blew the guts out of that engine. But damnit we hit 66 mph for 12 seconds😆

    • @grendelsgarage9723
      @grendelsgarage9723 Před 4 měsíci

      @BuildBreakFix oh dip! Hahaha, well, you have said 1000 times that the bearings are not meant for those RPMs hahaa 😆 😜 worth it!!!! X 100!!

  • @Lucky2strokes
    @Lucky2strokes Před 4 měsíci +2

    That is some serious speed 🤠 thanks for the entertaining an educational video