Down sizing rear pulley
Cruiser
Joined: Mar 2006
Posts: 110
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RE: Down sizing rear pulley
G'day mate,
Our dyna models get the 68 tooth sprocket, ( International/ australian models), and ...acording to my manual the USA gets a 70 tooth. I don't have a tacko, but if your into high speed cruizing the 68 is great at about 70mph. When the speed drops to 55 - 60 mph the bike is lugging a bit in 6th gear. In fact all the ratios seem a little high, ( around town you can't quite use 4th unless you break the limit a little). So I intend to get the US type 70 tooth. I posted asking the US part number for the belt to see if it was still the same as for the 68 tooth, but alas, no-one replied
... I'm sure i saw a way (do a search), to calculate the RPM's a any given speed, sorry I can't help with that one. Just so you know, the axle was in the middle of the swing arm slot and I GUESSED that a 70 would still work with just enough adjustment to play with, but if you are going more than 2 teeth you may need a new (overpriced) belt, that was why I was trying to compare part numbers. If you have the part number for the stock USA belt, and send it to me; I'll get the number for the belt here in australia then you will know what you are after if you go to a 68 tooth sprocket. They fit it to meet noise regs here in Australia.
hope I've helped and not confused the issue.
Graham 06 FXD Oz land.
Our dyna models get the 68 tooth sprocket, ( International/ australian models), and ...acording to my manual the USA gets a 70 tooth. I don't have a tacko, but if your into high speed cruizing the 68 is great at about 70mph. When the speed drops to 55 - 60 mph the bike is lugging a bit in 6th gear. In fact all the ratios seem a little high, ( around town you can't quite use 4th unless you break the limit a little). So I intend to get the US type 70 tooth. I posted asking the US part number for the belt to see if it was still the same as for the 68 tooth, but alas, no-one replied
... I'm sure i saw a way (do a search), to calculate the RPM's a any given speed, sorry I can't help with that one. Just so you know, the axle was in the middle of the swing arm slot and I GUESSED that a 70 would still work with just enough adjustment to play with, but if you are going more than 2 teeth you may need a new (overpriced) belt, that was why I was trying to compare part numbers. If you have the part number for the stock USA belt, and send it to me; I'll get the number for the belt here in australia then you will know what you are after if you go to a 68 tooth sprocket. They fit it to meet noise regs here in Australia.hope I've helped and not confused the issue.
Graham 06 FXD Oz land.
Club Member
Joined: May 2006
Posts: 14,564
Likes: 9,225
From: the 50s & the 60s
RE: Down sizing rear pulley
Here ya go Graham:
US
rear sprocket black70 tooth 40576-06
belt 133 tooth 40015-00
INT
rear sprocket black68 tooth 40535-06
belt 132 tooth 40594-06
mud
US
rear sprocket black70 tooth 40576-06
belt 133 tooth 40015-00
INT
rear sprocket black68 tooth 40535-06
belt 132 tooth 40594-06
mud
ORIGINAL: squeeech
G'day mate,
Our dyna models get the 68 tooth sprocket, ( International/ australian models), and ...acording to my manual the USA gets a 70 tooth. I don't have a tacko, but if your into high speed cruizing the 68 is great at about 70mph. When the speed drops to 55 - 60 mph the bike is lugging a bit in 6th gear. In fact all the ratios seem a little high, ( around town you can't quite use 4th unless you break the limit a little). So I intend to get the US type 70 tooth. I posted asking the US part number for the belt to see if it was still the same as for the 68 tooth, but alas, no-one replied ... I'm sure i saw a way (do a search), to calculate the RPM's a any given speed, sorry I can't help with that one. Just so you know, the axle was in the middle of the swing arm slot and I GUESSED that a 70 would still work with just enough adjustment to play with, but if you are going more than 2 teeth you may need a new (overpriced) belt, that was why I was trying to compare part numbers. If you have the part number for the stock USA belt, and send it to me; I'll get the number for the belt here in australia then you will know what you are after if you go to a 68 tooth sprocket. They fit it to meet noise regs here in Australia.
hope I've helped and not confused the issue.
Graham 06 FXD Oz land.
G'day mate,
Our dyna models get the 68 tooth sprocket, ( International/ australian models), and ...acording to my manual the USA gets a 70 tooth. I don't have a tacko, but if your into high speed cruizing the 68 is great at about 70mph. When the speed drops to 55 - 60 mph the bike is lugging a bit in 6th gear. In fact all the ratios seem a little high, ( around town you can't quite use 4th unless you break the limit a little). So I intend to get the US type 70 tooth. I posted asking the US part number for the belt to see if it was still the same as for the 68 tooth, but alas, no-one replied
... I'm sure i saw a way (do a search), to calculate the RPM's a any given speed, sorry I can't help with that one. Just so you know, the axle was in the middle of the swing arm slot and I GUESSED that a 70 would still work with just enough adjustment to play with, but if you are going more than 2 teeth you may need a new (overpriced) belt, that was why I was trying to compare part numbers. If you have the part number for the stock USA belt, and send it to me; I'll get the number for the belt here in australia then you will know what you are after if you go to a 68 tooth sprocket. They fit it to meet noise regs here in Australia.hope I've helped and not confused the issue.
Graham 06 FXD Oz land.
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