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Do carbon belts stretch?

Old 08-16-17, 03:24 PM
  #26  
sweeks
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Originally Posted by valeriano View Post
Specially considering the snow, mud and salt I'll have to face during winter.
I had a Strida 2 which I rode through the winter here in Chicago. The front pulley (or whatever it's called) would pack up with slush and the belt would pop off. This didn't happen often, but it was a major pain when it did.
In better weather, I never noticed extra drag from the belt. I'd prefer a belt drive over chain on a commuter bike any time.
Steve
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Old 08-16-17, 03:30 PM
  #27  
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Originally Posted by noglider View Post
Is reverse torque higher than forward torque? If so, how?
Also, the belts I have seen have teeth that are "square" or at least symmetrical when sectioned in the plane of the sprockets. How this would behave differently under "reverse" force is unclear to me.
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Old 08-16-17, 04:39 PM
  #28  
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Timing belts on auto engines are good for 100.000 miles.
I think I read that the belts are good for 75k miles on a bike.
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Old 08-16-17, 04:46 PM
  #29  
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Originally Posted by noglider View Post
Is reverse torque higher than forward torque? If so, how?

Skid stops.


-Tim-
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Old 08-16-17, 04:59 PM
  #30  
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It seems like some have the same visceral reaction to belt drive as others do to disk brakes, 1x or tubeless. Maybe they are the same people. Either way they think only in binary and refuse to see that there is a time and a place for each of these technologies. No one is suggesting that we change the world.

This is a Trek District Carbon belt drive bike. It is based on a modified Madone 5 frame and owned by user @Aka_ricerocket. The bike weighs 12 lbs.



I would ride the crap out of this thing.


-Tim-
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Old 08-16-17, 05:03 PM
  #31  
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As I thought when I saw them the Ideal use for a drive like the Gates is inside a "chain-case"..

Seeing as the fully enclosed chains get ignored and rarely thought of, in like Dutch Oma/Opas , grand ma/pa bikes

the not needing oil but wearing still from grit slurry with water, out of sight would be good..

But the niche market for $1500 + bikes has a need to show that feature off and compete on a weight basis..

Typical 1st question in bike shops...How much does it weigh?




...
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Old 08-16-17, 07:32 PM
  #32  
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Originally Posted by valeriano View Post
No, I have never ridden a belted bike. I'm thinking about it because of the low maintenance. Specially considering the snow, mud and salt I'll have to face during winter.
Belt drive has been wonderful for me in winter. No lube. No rust. No muss. No fuss.

My friend replaced his drive train after riding last winter. Granted, he could have taken better care of it. But my belt drive came through fine without any care at all.
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Old 08-16-17, 08:06 PM
  #33  
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Originally Posted by noglider View Post
Is reverse torque higher than forward torque? If so, how?
Not necessarily higher but if the lugs aren't symmetrical, they may not tolerate the same force in reverse.
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Old 08-17-17, 01:56 AM
  #34  
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Originally Posted by davidad View Post
Timing belts on auto engines are good for 100.000 miles.
I think I read that the belts are good for 75k miles on a bike.
75k miles is around 10 years of ride for me.
I guess it's worth.
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Old 08-17-17, 03:34 AM
  #35  
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Originally Posted by TimothyH View Post
It seems like some have the same visceral reaction to belt drive as others do to disk brakes, 1x or tubeless. Maybe they are the same people. Either way they think only in binary and refuse to see that there is a time and a place for each of these technologies. No one is suggesting that we change the world.

This is a Trek District Carbon belt drive bike. It is based on a modified Madone 5 frame and owned by user @Aka_ricerocket. The bike weighs 12 lbs.



I would ride the crap out of this thing.


-Tim-
Bike porn
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Old 08-17-17, 05:51 AM
  #36  
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Originally Posted by valeriano View Post
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There are several iterations of that bike. That is the least appealing, if you can believe it.

I'd ride a 12 lb belt drive Trek Madone 5 any day.
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Old 08-17-17, 06:11 AM
  #37  
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To me, the biggest shortcoming of a belt drive is the chronic lack of grease tattoo on your right calf. People won't believe that you rode to work.
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Old 08-17-17, 12:24 PM
  #38  
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Originally Posted by tamnalan View Post
To me, the biggest shortcoming of a belt drive is the chronic lack of grease tattoo on your right calf. People won't believe that you rode to work.
If you actually work, you can afford to get a chain ring tattoo!
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Old 08-17-17, 01:48 PM
  #39  
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Originally Posted by andr0id View Post
If you actually work, you can afford to get a chain ring tattoo!


You mean like a real tattoo? Can you imagine walking into a tattoo parlor with a roller chain and saying that I want that on the inside of my left calf.
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Old 08-17-17, 02:03 PM
  #40  
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Originally Posted by Velo Mule View Post
You mean like a real tattoo? Can you imagine walking into a tattoo parlor with a roller chain and saying that I want that on the inside of my left calf.
Seen lots of pics on Instagram of exactly that.
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Old 08-17-17, 02:18 PM
  #41  
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Originally Posted by sweeks View Post
I had a Strida 2 which I rode through the winter here in Chicago. The front pulley (or whatever it's called) would pack up with slush and the belt would pop off. This didn't happen often, but it was a major pain when it did.
In better weather, I never noticed extra drag from the belt. I'd prefer a belt drive over chain on a commuter bike any time.
Steve
My experience is similar. I don't notice any efficiency loss compared to a chain. But I did have the belt pop off twice last winter, both times in slush under uphill load. I just rotated it back on, no problem. Not bad in 100+ days of riding though. I am definitely a fan of belt drive and want it on my next bike too - one minor thing is I hope to see more hub options coming.
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Old 08-18-17, 07:51 AM
  #42  
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I bought a BF Pakit with carbon drive & 4 speed hub. I love it so far, but the belt started creaking. What usually causes that - too loose? Misalignment?
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