Chain ratio??????
Thread Starter
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Tourer
Joined: Sep 2010
Posts: 423
Likes: 1
From: London, UK
Chain ratio??????
Ok I'm going over to a chain and sprockets on my 09 iron.
Before the masses start tell me not too or the belts better, I agree but due to me putting in a new wide rear wheel I can't, I don't have the clearance between tyre and swing arm.
My question is on the ratio side, keep seeing on listings go 41t rear for better highway speeds, loss the feel for a 6th gear.
Is this true?
From what I've been able to find a stock ratio is 51t on the rear and 21t on the front, anyone dropped to a 41t rear? Any feel on torque or highway driving?
Before the masses start tell me not too or the belts better, I agree but due to me putting in a new wide rear wheel I can't, I don't have the clearance between tyre and swing arm.
My question is on the ratio side, keep seeing on listings go 41t rear for better highway speeds, loss the feel for a 6th gear.
Is this true?
From what I've been able to find a stock ratio is 51t on the rear and 21t on the front, anyone dropped to a 41t rear? Any feel on torque or highway driving?
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
You know what the front and rear pulley sizes are for your belt drive. Take the larger tooth count and divide into it the smaller tooth count, which will give you the rear drive ratio. They are likely to be 68 and 29, giving a ratio of 2.34.
When sizing up a chain drive you should look to achieve a ratio very close to the belt drive ratio. What ratios do conversion kits offer? Don't go far from that as you risk losing performance, not gaining it.
Give us more details and we can help you through the maze!
When sizing up a chain drive you should look to achieve a ratio very close to the belt drive ratio. What ratios do conversion kits offer? Don't go far from that as you risk losing performance, not gaining it.
Give us more details and we can help you through the maze!
Thread Starter
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Tourer
Joined: Sep 2010
Posts: 423
Likes: 1
From: London, UK
You know what the front and rear pulley sizes are for your belt drive. Take the larger tooth count and divide into it the smaller tooth count, which will give you the rear drive ratio. They are likely to be 68 and 29, giving a ratio of 2.34.
When sizing up a chain drive you should look to achieve a ratio very close to the belt drive ratio. What ratios do conversion kits offer? Don't go far from that as you risk losing performance, not gaining it.
Give us more details and we can help you through the maze!
When sizing up a chain drive you should look to achieve a ratio very close to the belt drive ratio. What ratios do conversion kits offer? Don't go far from that as you risk losing performance, not gaining it.
Give us more details and we can help you through the maze!
I was looking at something like this
http://www.ebay.co.uk/itm/2309325319...84.m1423.l2649
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
That kit is 51 and 21, which gives a ratio of 2.43, which is pretty close to the ratio I mentioned earlier.
The pulley sizes are in your owners manual. If you don't have one you can go to Harley's USA website and the 'Owners' tab and download one.
The pulley sizes are in your owners manual. If you don't have one you can go to Harley's USA website and the 'Owners' tab and download one.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
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