View Feed
group-icon
Coffee Room
Discuss anything here - everything that you wish to discuss with fellow engineers.
12920 Members
Join this group to post and comment.
zaveri
zaveri • Jul 22, 2012

Two-wheelers with belt drives

As we all know that motor cycles make use of chain drives as means of transmitting power from engine to rear wheel.

Now i was wondering what would happen if this chain-sprocket thing was to be replaced by belt and pulley system.

it will have its own advantages : it will be lighter, noise levels will be reduced, and it will make the vehicle designer's job easier.

Does it have any advantages though ? is this feasible ?
mechky
mechky • Jul 22, 2012
No, belts can't be used due to following reasons:

- Belts have much less strength than chains
- Susceptible to slip, speed ratio doesn't remains constant
- Periodic retensioning is required
- Upper limit on power and speed
- Belts deteriorate on exposure to lubricants
- Limited life and need periodic replacement
zaveri
zaveri • Jul 23, 2012
mechky
No, belts can't be used due to following reasons:

- Upper limit on power and speed
-


can you elaborate on this ?
Belt drives depend on friction. Things may happen to reduce this at a critical moment leading to accidents. mechky's elaboration is explicit.
mechky
mechky • Jul 24, 2012
zaveri
can you elaborate on this ?
speed limit is about 2000m/min and power limit is about 60kW
zm-i
zm-i • Jul 26, 2012
Some cars use timing belts. Some motorcycles also use belts. And there seems to be no problem.
Please correct me if I am wrong. πŸ˜•
zaveri
zaveri • Jul 27, 2012
zm-i
Some cars use timing belts. Some motorcycles also use belts. And there seems to be no problem.
Please correct me if I am wrong. πŸ˜•
Which are those bikes
zm-i
zm-i • Jul 27, 2012

Aren't those belts?πŸ˜•
zaveri
zaveri • Jul 28, 2012
zm-i

Aren't those belts?πŸ˜•
Yes those are belts. those are ribbed belts. they are basically used for timing. they seem to make good substitutes for chain drives in those harley davidsons .
zm-i
zm-i • Jul 29, 2012
Yes those are belts. those are ribbed belts. they are basically used for timing. they seem to make good substitutes for chain drives in those harley davidsons .
So belts can be used, right?
zaveri
zaveri • Jul 31, 2012
zm-i
So belts can be used, right?

ofcourse. as you can see that they are already being used.
zm-i
zm-i • Jul 31, 2012
Yes. I do recognize that zaveri. πŸ˜€ However, the first respond to your topic is a "no". So, I wonder if what mechky says is true.

No, belts can't be used due to following reasons:

- Belts have much less strength than chains
- Susceptible to slip, speed ratio doesn't remains constant
- Periodic retensioning is required
- Upper limit on power and speed
- Belts deteriorate on exposure to lubricants
- Limited life and need periodic replacement
I never really know the reason why, but I know that many have substituted chains with belts (...and of course they change the sprocket too).
zaveri
zaveri • Jul 31, 2012
zm-i
Yes. I do recognize that zaveri. πŸ˜€ However, the first respond to your topic is a "no". So, I wonder if what mechky says is true.



I never really know the reason why, but I know that many have substituted chains with belts (...and of course they change the sprocket too).
i first said no, because mechky gave strong reasons. But now since belt drives are implemented and the bikes are running normally, then there is no point in disagreeing
mechky
mechky • Aug 1, 2012
zm-i
Yes. I do recognize that zaveri. πŸ˜€ However, the first respond to your topic is a "no". So, I wonder if what mechky says is true.



I never really know the reason why, but I know that many have substituted chains with belts (...and of course they change the sprocket too).
Yes, toothed belts similar to timing belts are appropriate.

Share this content on your social channels -