Are Bigger Jockey Wheels More Efficient? | The GCN Tech Clinic
Vložit
- čas přidán 4. 08. 2024
- How does Ollie mount his bike to the wall? Should you move from flat pedals to clips? Why would someone still use 23mm tyres? How durable are rear derailleur hangers? When should replace your disc brake rotors?
Check out the GCN App:
gcn.eu/app
Subscribe: gcntech.co/subscribetogcntech
The GCN Shop: gcntech.co/r1
#Cycling #GCN #GCNTech #RoadBike
Do you have any burning tech questions? Let us know in the comments 👇
If you enjoyed this video, make sure to give it a thumbs up and share it with your friends. 👍
If you'd like to contribute captions and video info in your language, here's the link - gcntech.co/r0
Watch more on GCN Tech...
📹gcntech.co/maintenancemonday
Music - PSN Music
Photos: © Velo Collection (TDW) / Getty Images & © Bettiniphoto / www.bettiniphoto.net/
Brought to you by the world’s biggest cycling channel, the Global Cycling Network (GCN), GCN Tech is the only channel you need for all things bike tech - past, present and future.
Simply put, we’re obsessed with tech: we seek out and showcase the best in bikes, components, tech, accessories, upgrades and more from races and events, tech shows and product launches across the globe to bring you the best in road bike technology.
We’ve also got great maintenance videos to help you get the most from your bike; pro-bike tours from all the biggest races; special features and the weekly GCN Tech Show. We also take a deeper look into the future of cycling, apps, smart tech and virtual riding.
Join us on the channel and the GCN App to submit your content, vote on the latest tech and keep abreast of exciting new trends.
GCN Japan: gcn.eu/subscribe-gcn-japan
GCN Italia: gcn.eu/GCN-Italia
Suscribirse a GCN en Español: gcn.eu/Suscribirse
Facebook - gcntech.co/gcntechfb
Instagram - gcntech.co/gcntechinsta
Twitter - gcntech.co/gcntechtweet - Sport
Do you have any burning tech questions? Let us know in the comments 👇
GCN Tech I have my bike hanging from the front wheel on a fork type mounting and it’s working just fine but are there any risks I’m not seeing?
Ollie--2 burning questions Bro: (1) what is your FTP?; (2) how can I get one of those GCN stickers as shown on the front of your computer? Thanks Bro!
I am having trouble igniting an old set of handlebars. I have tried matches and a lighter. Nothing seems to get the fire going. Any suggestions?
What are the basic tools one would need to assemble a bike? Looking to do a bike build while in quarantine, thanks!!
Maybe not technically a technical question, but... I have just received the service kit for my Formula disc brakes and am going to refill them. Is it as simple as connecting the DOTs?
8:44 actual question in title
Thx
literal hero
Thanks
Thx bro
what a bloody waste of time. thanks !
Ollie, Please water your plants.
Bigger jockey wheels add more weight and have a larger aero profile. and even though the bigger jockey wheels might reduce friction by causing the chains pivot less, they could also add friction by having more jockey wheel teeth going through the chains. I put my trust with Shimano on this one, and if they indeed improve performance Shimano can easily implement them too. Unless CeramicSpeed has a patent on bigger jockey wheels, which would be a ridiculous patent.
Recently i watched a vid of a test of this. They save approx 1.6 watts, add 20 grams, but didnt mention the aero drag. Personally i think drag would be pretty much no difference as its right in the turbulence region behind the pedals. Maybe there is another video that tests drag out there.
First and foremost, love your pod cast, very informative. As a mechanic, I love getting a different perspective on any mechanical issue. On the comment of "AD" Tires have two main functions. 1)being that of the weight of the rider and 2) The condition of the road. From there on, it is the function of the discipline of the ride, i.e. gravel, TT, Crit, endurance.
Ollie must be single. Otherwise that bike wouldn't be on the wall.
My bike is mounted on the wall. And yes it is IN the house. My wife is amazing.
@@rosbifle413 Okay then...
@@Annekromhout Mine would decapitate me if I considered that. My wife, not my bike.
@@rosbifle413 It's better to keep your mouth shut and appear stupid than open it and remove all doubt.
do what i did and get your lady into cycling
Hi GCN! Great show, and i always look forward to new videos.
Background: I've converted my wheel set up to tubeless about a month ago and i've been riding my bike as often as possible over the lockdown period. I've had a few punctures but they have sealed no problem mid ride. However, once i get home and wash my bike, the punctures seem to re-open as evidenced by the bubbling sealant on the surface of the tyre. They seal eventually and hold a bit of air fairly well, BUT the same punctures keep re-opening every time I wash my bike (or basically get the tyres drenched). Is this ok? Or is it time to get new tyres? Long-winded but Thanks very much
My wife was super apprehensive about clipless pedals. I finally convinced her to give it a try. I put them on her mountain bike and she rode around the yard (garden for you Brits). After a little while and with some practice unclipping, she was comfortable enough to give it a go on the road bike. She was surprised at how much more secure she felt riding without her feet moving on the pedals. She loves them now.
The Park tool box, do's it include a tool for hair cutting?.....Keep Safe and keep em coming!!
Having a spare rear derailleur hanger in your toolbox - what a simple and brilliant idea! In case you are your own bike mechanic, this saves you a lot of trouble down the road.
I just ordered one right now.
I ordered one a while ago when my original bent. Lost it, bought a new one, then found the first. So I now have two :)
yeah, its useful. i had one go as soon as i got to majorca a few years back and meant i couldnt ride my bike the whole week. had to hire one.
Great question about flats. I was/am in the same boat! I've tried a few times now to I corporate clipless pedals onto my bike. Had a few knee problems and without a proper bike fit and my inexperienced cleat setup I thought I was giving my self knee issues so I kept changing back. After speaking to my physio recently (who is a bike specific one) he said actually having the feet clipped in really helps stabilise the foot for those prolonged periods of time riding! So I'm giving it a other go. Get your cleats set up 'ball park' and get on an indoor trainer to practice unclipping if you can! (It's well scary first few times out and when at traffic lights) as a newish rider I definitely feel daft having riding shorts and jerseys but then wearing trainers and it's actually put me off joining a club and/or group rides! Looking back a CC could probly have helped me with my clipless woes sooner 🙈🙈
Great Show Olli...I love this TechInfo's!
GCN love your content! Thank you! I was wondering if you could do a video on Oval Chain rings! Are their benefits to them and is it worth putting them on? I see a lot of people switching to them but I don't see much pro riders on them. Thank you!
Good show. I like how Ollie answers questions!
From the look of his house it seems like whilst everyone is in lockdown Ollie keeps sneaking into the office to nick more stuff.
Bingo
Hello Howard, thank you so much for your effort and dedication to make new cycling world and whatever you reach. I would love to see you talking with Hambini about 23mm vs 28mm tires in aspect of aerodynamics, inertia, comfy & safe and other things that we never realize that are important than disk brakes. I guess that you have known-how to do it but You could invite him using zoom or another video app for your computer.
Best from the old school cyclist mate. Lets keep united
@ Hi Ollie! Talking about rear derailleur jockey wheels: I've always wondered why the upper jokey tends not to have a proper industrial bearings. Is there a good reason for that? I swapped both of mine out for some with these bearings and I get much less noise from the jockeys and it feels smoother too.
Hi Ollie!! Love the show!! To comment on the Ninja BB question? I own the Ninja BB he's talking about with the Gossamer Pro ABS 34/50 165mm crank length BB386evo spindle crankset and it's got just over 3000 miles on it and still no signs of wear!! Highly recommend it!!
I remember riding 21, and sometimes even 19, tires! Damn, we were crazy back then.
And still!
Going clipless turns two distinct things - you and the bike - in to one thing.
"human bike engine" lol
Great show GCN team, your videos are keeping me entertained while wifey watches reality TV. I have a beautiful Ibis Hakka with a matte finish, any tips on maintaining the matte? Is polish OK, or will it effect the finish? Product recommendations appreciated 🙂👍
Cheers for the answer Gcn
#askgcntech Hi Ollie thanks for the great video! I'm currently thinking of getting a new wheelset and I'm unsure if I should get the scope r4 (45mm deep) or r5 (55mm deep). what do you recommend for mainly riding on flats?
#askgcntech Hey Ollie! I use an old drop bar to store my bikes on the walls. Cheap and effective! Thanks! John in Cayman
I’ve always had the thought in the back of my mind that a power meter would be nice to have. I have Shimano 105 Groupset but with FSA Omega crankset. I now several companies sell Shimano 105 cranks with power in them and I’m just wondering how to tell which crank is compatible with my bike. Thnx
Finding a new rear derailleur hanger is especially difficult if your bikes model is discontinued. We machined a (close) copy for the bike of my wife because a new one was not available anymore. The copy is probably slightly thicker, putting the wheel back in can be difficult.
Best #AskGCNTech episode to date.
Neutral thanks mate 👍🏼
I'm using 23's on 19mm internal width rims, they measure 26mm on that rim.
#23aintdead
Hi Ollie, I’m thinking of getting the sella italia boost saddle which you no is a short nose saddle I was just wondering where or how I take the reach measurement do I take it from the front or rear end of said saddle do I take the measurement from the front of old saddle to the bars of from the rear of the old saddle ? Any help would be great thanks
Ollie showing how friction on chain works with his hands, also looks a bit like break-dancing, or in Ollie's case, brake-dancing. More dancing Bro!
Oh...that was funny with the Park Tools...great comedic timing 🤣
In my experience, most people fall off a few times when they switch to clipless padals. I'd suggest waiting a bit till the end of lockdown so you can ride with somebody in case you need a hand.
Dis am true. The exquisite agony of being stationary and unable to unclip is one of life's great experiences especially if you are at a traffic light. I always tell people to try clipless first on a stationary bike. Many spin class bikes have pedals with platform on one side SPD the other. Of course that limits you to SPD. So check out your YMCA etc..
I have found that a nice compromise between flats and clipless is using a a quality flat pedal (mine are vintage Campy) with a quality pair of toe clips (mine are vintage Christophe) with bling leather straps for the toe clips (mine are blood red). Why do I like this arrangement? It sufficiently locks my foot to the pedal so it can't slide around and I can exert appropriate forces on the pedal throughout the 360 degree pedal stroke. But I can still pull out my foot in an emergency and therefore have no fear of falling over, attached to my bike. PLUS, I can ride with my running shoes. So, no problem getting off the bike and going for a hike or walk to the coffee shop.
I was so entranced by your hair bouncing around like a Treasure Troll’s.
Cranks related question. I am 180cm tall, 87cm inseam. I bought my first road bike 2 years ago, it had 172mm cranks and I bought left crank with power meter for it. Later that year I bought TT bike, it had stock cranks 175mm long. And each time few weeks before TT event I swapped crankset with power meter to my TT bike and trained on it. This year I purchased another road bike, it was very good deal but it had stock 170mm cranks. Now I am looking for second power meter and my question is how important is it to ride same cranks all the time from biomechanics and performance perspective, let's say 172.5 and is it an issue to ride different cranks from time to time?
Tip for the person riding flats, assuming you don't already have straps, you could try that. I run errands on my bike and although I could run into stores clomping like a horse with clipless I can wear regular shoes and still get the push pull motion. But any time you feel uncomfortable being strapped in you can just use the other side without the straps.
Great show gents! I've become obsessed with your cheap bike to super bike transformation. I have an 80s Trek aluminum frame bike (21 lbs 12 oz) and I'm wondering if I can get it under 20 lbs (9 kg). It came equipped with Bontrager deep section alum wheels, Shimano low end (Tourney) groupset, Bontrager carbon fiber seat post, Ritchey alum bars. It still has the original fork and a quill stem - is this the best place to drop weight or would you look elsewhere? Many thanks from the US!
MKS and Velo Orange make half-clip cages that bolt onto to flat pedals. My wife uses them for duathlons on her bike (she’s a runner, not ready to be fully attached to her bike). Quick transitions though. Half-clips don’t have straps like old-school clips, so it is easier to bailout than clips and very similar to the motion needed to detach cleats from clip less pedals. I use them on my city bike.
I ride 23s because whenever I've ridden bigger tires they feel squishy. Also, with people buying up all the bigger tire sizes these days, continental GPs are cheaper in the 23s.
At 12:08 you mention that you don't have to go with a current generation Shimano crankset as they all have 24mm axles, but I was under the impression that the newest versions (9100, 8000, 7000) used different spacing on the chainrings. I might be wrong but for these cranks I think you also need to have the appropriate front derailleur.
#askgcntech can you do an internal cable routing and pre bled disc hose routing using the park tool magnets set? Looking to do a groupset swap as have a little time on my hands....
Hi Ollie
I've got a bike that's seen me well for a few years but is too small. Over the years I've upgraded it steadily to 10 speed DuraAce 7800. Got a bike over Christmas that is the right size but has 9 speed Sora all over it with a view to swapping the groupsets so I've got the DA on the bike that fits and then sell the old one with the Sora. I'm happy swapping all the components but is it worth my trying to keep the cables etc when I swap or is that completely false economy? What would you replace during the swap (both ways) and what would you try and salvage?
#askgnctech Love your show, just found it about a month ago and I've been enjoying more cycling since. Question? Are cottered pin cranks still considerably usable for commuting or would it be wiser to upgrade to something more reliable?
How about a maintenance video on cleaning and maintaining jockey wheels. I’m at 6800 miles the past year and a half on my Caad12/105 and need to know when to service them.
#askgcntech Hi, Big fan of the show! So i have question. I ride cyclo-cross uci races and so i ride 2 Stevens SuperPretiges. They both have 140 mm discrotors in the front and the back. Should I change rotorsizes? And if so is that possible?
#AskGCNTech I'm considering the purchase of a new bike with Ultegra R8000 Di2. I have a bike with 105 5800 and I've purchased a single sided crank arm based power meter for the 5800. I'm wondering if I can just put that on the new bike with R8000 and avoid purchasing a new power meter. They are both 172.5. I do have the original crank arm for the 105 bike and will be keeping it for usage on the turbo trainer. What are your thoughts on this? New bike, new power meter or just stick with the one I have? Thanks Ollie.
Does that bike mounting method affect the crank based power meter setting??
I have similar mounting system, and noticed it is affecting the PM output......
#askgcntech Does the Shimano 8 speed chain include a rivet together with the chain for sizing? I'm looking to replace my old chain and I am unsure if my current chain is of the right size, hence I am opting to size the new chain.
8:55 If science would suggest that it's more efficient to not have such tight angles in the chain (which seems logical), what's the point of having a 10t cog on the SRAM 12 speed system? Is there any point having more than 11s (like we currently have on Shimano), especially if they are located at the narrowest point in the cassette? Seems counter intuitive to put pressure on companies to develop them and then get the oversized jockey wheels for them gainzz... Wonder if the new Shimano DA will follow the trend?
Science didn't yet test it afaik, only the companies involved. The theory "forgets" that while there is less angle in between two links, you have more links making an angle. So in the end the total chain overlap to make the bend is equal.
The gain of the smaller cog i.e. the higher max. distance per revolution outweights the miniminimnimal higher friction due to the tighter bending angle
"I have to give it back... which is a... ... ... SHAME!" LMAO!!!
Can you post these questions on the app? Had a quick look and couldnt find where to write it out.
Hi there! Thanks for the video I love all GCN videos and am always watching them! Please carry on I love your extremely helpful videos. I have a question... While I ride my road bike one of my brake callipers rubs on the rims. I don't know how to fix this or space them out more. Please help THANKS
Use the barrel adjuster to adjust the space in between. To make it centred, use your hand
Riyan Hashem Jamy Riyan Hashem Jamy I'm really sorry... I just recently started cycling (road cycling ) I have parallel brake calipers. I'm not quite sure what the barrel adjuster is
@@hadeedyousaf2570 its the adjuster for the cable, and its tension. Lessen the tension, and it will spread the calipers slightly out, stopping them from rubbing.
On a parallel brake, the caliper needs to be centered, or balanced. Do a CZcams search for vidos on it. Its not too difficult.
Glenn Howell thanks mate I appreciate it😁 you helped me a lot
@@hadeedyousaf2570 no problem at all! We all started sometime, somewhere. I just started road biking about 2 years ago myself. BMX as a youth, but never was far from it. Moved into MTB in my adult years off and on. Get out htere, be safe👊👍🇺🇸🇬🇧
6:25 , Ollie thinks someone is taking his park tool stand and for a fraction of a second panics
Ollie, always love the content but one thing I wish all of you would do more is suggest people support their local bike shops. You guys are fast to suggest people buy from Ebay and such. Of course nothing wrong with saving some cash it just seems like it's often overlooked. I think it's safe to say every local bike shop would welcome more business. Thanks.
#AskGCNTech Ollie, I've been interested in GCN's presentation of the "whoop" technology suite. I'm not a competitive racer and only bike for fitness. I have to admit that I road bike mostly on days I can't ride my mountain bike to stay fit. I also do CrossFit three to four days a week. Would whoop benefit some one who is not working towards any certain goal? Would the information it provides be helpful for every day well being? Love the show and all the work you've put in from home during these trying times.
When will the GCN APP support landscape mode?
I did customize my xt rd m4000. I put 13 and 15 teeth pulley. Adds more comfort uphill. Lessen my shifting to high teeth on cogs.
Rotor and Easton cranks are compatible with shimano bottom brackets.
#askgcn
#askgcntech
I have a problem on both my mavic pro carbon and my dt swiss alloy rim brake wheels. It happens when I push on the pedals, when I am out of the saddle, and the non drive side rattles. I hear a noise which is like some spokes noise, don't know. (The spoke are well tenctioned). The wheel also touches the left pad on the back wheel, and while I hear that rattle. The noise does not last long but it is always there when I push out of the saddle.
(Wheels are less then 1 and a half years old)
Can you help me?
#AskGCNTech Hope you are all staying safe during this pandemic my question is can you use the GRX sub brakes with other shimano hydraulic brakes
Hi, I have a shimano hb-rm50 hub or a whole wheel with it on an older bike. I found that it was not rolling smoothly, and when taking it apart I found that one of the balls was "bad" and also the cone. Can I find spares for this, or do I need to buy a new wheel ?
Best regards
/Anders
I have a question. I have a 1974 Raleigh Super Course with an Avocet Triple 28/44/54 and 12/28 . It is a 175 MM crank with a square taper. I recently broke the left crank, it was a heck of a climb. My question is, after fruitless searching for a replacement crank, would it be in appropriate to use a crank from a different company, they all look so strange compared to the original?
I am having trouble removing the non drive side crank arm on my bike (in order to remove whole crankset and check on bottom bracket condition). It’s a Praxis Alba. Has the cassette tool as well as 8mm Allen key spots but hard as I try with the Allen key I cannot get it to budge. Do I need to use the cassette tool? Do I need to get more leverage somehow? WD-40? #AskGCNTech
Love the show. What is the cheapest/easiest way to seat a tubless tire when a trackpump is not enough? I've been going to the local bike shop to use their compressor but am having troubles doing that these days for pandemic reasons. I'd prefer to avoid CO2.
Ethan Block your options are co2, but they’re usually not high enough volume to seat it. You’ll need a specific track pump with a canister attached. They’re specifically designed for tubeless tires. I have a Topeak booster. It’s great.
Can a 36 hole hub (like the expensive brand new one I just bought) ever be matched to a 32 spoke rim (like the one I have on the bike)! I laced and relaced it several times without success, then gave up and reverted to an old, inferior 36 rim. Was i too hasty...and I don't mean with the purchase, but with the rebuild. The former i already know.
Btw, great sign language on the jockey wheel friction explanation!
#askgcn: how can you tell the fit of a bike online? Because Ive been looking at a schwinn millsaps cx bike and the pictures don't give enough information to tell.
How to do maintenance to the inside of the frame?
#askgcntech I am in the process of changing a DT Swiss 3 pawl freehub to a ratchet style freehub (no reason, just trapped inside with nothing to do). I know that I will need new internals and a new freehub body. My question is about the end cap. The wheel is a 12x142 thru axle. Can I re-use the end cap from the 3 pawl hub body?
Are you able to let us know what the maximum size cassette you can fit to the New shimano 105. I think shimano have said that you can use a 34 at the rear, however I have heard you can get away with more. Do you know what you can get away with and also the use of a wolf tooth hanger??
thanks for the video!
I disagree it depends on how much force is put thru the chain because it's on the bottom of the chain and tension is set by the derailleur spring, not the pedals: pedals put tension between the chainring and the cassette. So the the chain is bending under low tension. There's still benefit, but not as much.
A second advantage is the jockey wheel spins slower. The jockey wheel bearings induce some friction. Jockey wheels are also under low tension, so this is relatively small (but what's "relatively" in this context? Every bit helps.)
big tip for the people who want to try clipless pedals but is too nervous to try them. use clipless pedals for a mountainbike to begin with, they are easier to get in and out of and there is side to side "play" which makes the foot able to move around a little which in turn makes it feel less like you're stuck on the bike.
and if you like the feeling to be able to put down power through out the entire pedal stroke could you change to a road speciffic pedal later down the line or swap back to flats if they are the way you want to go.
it is not how you spend your time on the bike that matters, it is the fact that you're spending time on your bike and enjoying the work out it brings that matters.
Actually, Shimano have (had) oversized pulleys. On an 8-speed Altus
Yes, oversized pulleys on my altus equipped station bike, and normal small pulleys on my ultegra Sunday best bike. Odd how the cheaper set has bling sized pulleys isn't it. Think this is all marketing rather than real science.
And 2300 Tourney
5:40 Wheelmaker Hed used to caulk that seam, or gap transition, between tire and rim on Lance's wheels. Until the UCI noticed and made it illegal. But Hed claimed it made a wheel much more aero.
Hello, if i used my 5 speed steel bike on Zwift, am i loosing 10-40w before ive even started? Ive not a bottomless pit of money for an uptodate bike to use online. thanks GCN, mark
I use hollow tech 2 on my mtb. I use a 3x9 shimano alivio bb52.
#AskGCNTech I have full Shimano 11-spd Ultegra 6870 Di2 Mid-Compact and recently it's having difficulty dropping from the 5th to 6th cog when in the big chainring. It has no issue climbing from 6 to 5 and no issues moving up or down between any of the other cogs. I have pulled and cleaned the cassette a couple times, has a relatively new chain, I keep my bike shiny, but the issue persists. Any ideas?
Hey Ollie, just wondering what you use for hair product
On my MTB I haven't had to replace the rotors in the past 6 years.
E-bikes wear through them a lot quicker though. There they may only last 1-2 years.
Obviously this depends heavily on usage.
I use double-sided pedals, flats most of the time, flip them and clip in when I want
I have a bike with Ultegra 8000 series levers and derailleurs. Does anyone know if a GRX rear derailleur is going to work with that?
Is oversized pulley compatible with shimano sora r3000 rear derailleur?
Can i use a bigger jockey wheels for my sora 3000 RD?
Re the point about trainers and frame stress. Most trainers have a little give. That aside, recently some manufacturers have started to include indoor trainer test simulations to their frame QA/testing programme and are approving their frames for use with direct drive/wheel off trainers.
I use a product called a Clug to hang my bike up along the wall. it's cheap and small.
Will a Clug keep Ollie's hair under control?
#askgcntech I have always used wet lube on my road bike and just recently tried out a dry lube (C3 ceramic lube from Muc-Off). I did this with the bike that is on my indoor trainer as well as the outdoor bike which is just now starting to go outdoors. I find that unlike the wet lube I can hardly tell if the chain is actually lubed so much that it is dry. It is kind of worrisome but probably normal. I applied the same amount of dry lube as I normally apply wet lube (1 drop per roller) but when I touch the chain with my fingers it is very dry. Can you confirm that this is normal? Thanks!
Francois Rouviere Yes, dry lube is just that: dry.
#AskGCNTech
For a similar chainring/cog ratio (combination), how much difference in cadence will make a shorter crank vs. slightly longer crank (e.g., 172.5 mm vs. 170 mm).
Besides, how does such crank length different will affect the riders hear rate?
I just recently switched from 172.5 to 170 mm cranks. I can’t give you a specific number for your question, but it is noticeable. If you live where it’s hilly or mountainous you will immediately notice the difference on your first climb. I go up my usual climbs in the same time or even slightly faster. My cadence is slightly higher but the force of pressing on the pedals is reduced. Good if you have knee problems or are getting older. I will never go back to 172.5.
I am confused to choose between c-bear pulley wheels (without cage) and kogel kolossel oversized pulley wheels
#AskGCNTech hiya love the show, watch it every week! my question is about brake pads. how come contamination is more of an issue on disc brakes than it is rim brakes? when i first switched to road the loss of power was almost worth the trade off, that if i had contamination issues i could just clean them and maybe file them down a little. now disc brakes are on road bikes which is great, but contamination means i'll have to get a blow torch on them or replace them.
hope everybody at GCN is coping well. bad news about jon though, it's awful that inter-dimensional shape shifting alien lizard stuff.
#askgcntech hi Ollie,
I'm about to build my first lightweight-project. Since I want to get under 6kg I was wondering which kind of bottom bracket is the lightest (maybe in combination with sram red crankset).
Thx a lot!
Love the show
Cannondale hollowgram sisl2 is very light and can accomodate a 1by setup easily
Hello #AskGCNTech
My headset bearings needs replacement , the size is 1 1/8" 45"×45" but the problem is I don't know which one to buy online and going to the local bike store didn't helped the case .
look up th bearings in taiwan www.thindustries.com.tw/index.php?language=zh_TW&mod=6 most bearings come from them. look up the 45*45 bearings with a 30 mm ID. Check what the ID of your headtube is to get the outside Diameter of the bearing.
My bike is specialized Allez E5 sport 2017 and the bearing that came with the bike are of the company TANGE SEIKI
Well, from a person who uses OSPW I can say two things:
1) Don't use them for wattage savings if you already have a high-end rear derailleur, chain lube, and chain because the aerodynamic disadvantage cancels out any advantages from friction losses.
2) Don't really need them if you use electronic shifting because the shifting is already superior (I don't use electronic shifting).
The only reason for these is they look really cool, the chain is quieter (less slap) and the shifting is super crisp.
P.S: They are also really easy to clean.
#askGCNTech Tech Question: I have been working on my TT speed of late by riding to work (50 km per day). Would like to change to a Shimano Ultegra 56 Large chain ring and feel ready for that size. Can you show us how to do that and recommend the best place to source them. My local bike shop recommended moving to Rotor Q-Rings to achieve my ratios. I'd rather keep to Shimano. A 56 toothed chainring is not cheap so I want to get that right. I live in Australia so shipping from Japan is usually quite easy.
Is the cleats pedal of mtb comfortable to roadbike?
What park tool set is that? I have the professional set but have never seen these Handy bags to store all the tools needly. Would be awesome to know.
I think it is this one: www.parktool.com/product/blue-box-tool-case-bx-2-2?category=Storage
Rob Hartsock cheers, mate!
#askgcntech how much does the placebo effect play into upgrades?
#askgsntech Can a crankset for 11 speed chain rings be used for 12 speed? And do you need to buy hub that can fit 12 speed chain rings?
With the Coronavirus going on, what’s the best method to clean your bike wheels from the stuff you pick up on your ride W/O wash your bike all the time. Bleach or alcohol spray ? and would it effect your wheel?
Please help, my bike keeps wanting to go straight. Not a joke.
When turning the handlebars, there seems to be some resistance (like a dent?) when the position of the steer is in 12h position. It feels like it falls into place. It's nut a major hurdle, but I am wondering wether it will get worse and if there is any risk of continuing riding.
It's only since today and I don't think I hit any major bumps.
Thanks Ollie👍🇦🇺
Tech Question: What are the marginal friction losses in the drivetrain when sitting in a 10T (50T Chainring up front) at, let's say, 400W, and how does this compare to an 11T with 53T up front? Asking for a friend.
I wouldn't think it would be much different between the two or very noticeable to the rider if anything maybe add or take a couple mphs