US gearing 27/61 for a tube frame Buell
lowers top speed increases accleration, makes that torque come out to play
or the half/half withthe UK on the front & US61 on the rear however it will effect your speedo
just search US gearing
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| Sprocket size matters https://ukbeg.com/forum/viewtopic.php?f=7&t=24505 |
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| Author: | sillyb [ 14 Jul 2020 18:18 ] |
| Post subject: | Sprocket size matters |
I know it’s been mentioned before but I’m not good at finding it🤭 I know there are two size sprocket/pulleys and I know you can swap and change them but can’t remember what advantage or disadvantage they have. If someone could point me in the right direction please. |
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| Author: | Nutah [ 14 Jul 2020 18:30 ] |
| Post subject: | Re: Sprocket size matters |
US gearing 27/61 for a tube frame Buell lowers top speed increases accleration, makes that torque come out to play or the half/half withthe UK on the front & US61 on the rear however it will effect your speedo just search US gearing
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| Author: | Nutah [ 14 Jul 2020 18:35 ] |
| Post subject: | Re: Sprocket size matters |
viewtopic.php?f=7&t=708&hilit=US+gearing read this go to 03 post it explains it all.... |
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| Author: | 03 [ 15 Jul 2020 02:59 ] |
| Post subject: | Re: Sprocket size matters |
Nutah wrote: http://www.ukbeg.com/forum/viewtopic.php?f=7&t=708&hilit=US+gearing read this go to 03 post it explains it all.... Blast from the distant past. 
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| Author: | Nutah [ 15 Jul 2020 07:47 ] |
| Post subject: | Re: Sprocket size matters |
indeed  I am running 1/2 US gearing , I have a Sportster rear pulley which was modified by Pete  he opened the central hole which now fits the Buell wheel makes a real noticable difference , so full US gearing would be even better
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| Author: | sillyb [ 15 Jul 2020 13:28 ] |
| Post subject: | Re: Sprocket size matters |
That's very informative and thanks for pointing me in the right direction. Is there a significant difference on traveling at slow speed in traffic, ie: feeling you have to slip the clutch to slow down? |
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| Author: | kevmean [ 15 Jul 2020 13:51 ] |
| Post subject: | Re: Sprocket size matters |
I've got full US gearing on Muffin and it's far better around town and for hooning around , only time it's not as good as standard is if you have long motorway blasts at high speed . On the X1 you need to change the speedo or put a speedo healer on to correct the reading on yours. |
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| Author: | Nutah [ 15 Jul 2020 20:26 ] |
| Post subject: | Re: Sprocket size matters |
sillyb wrote: That's very informative and thanks for pointing me in the right direction. Is there a significant difference on traveling at slow speed in traffic, ie: feeling you have to slip the clutch to slow down? no never needed to slip the clutch |
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| Author: | TOPGUMM [ 15 Jul 2020 21:01 ] |
| Post subject: | Re: Sprocket size matters |
29 front and 61 rear for me. 
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| Author: | x1glider [ 15 Jul 2020 22:38 ] |
| Post subject: | Re: Sprocket size matters |
kevmean wrote: I've got full US gearing on Muffin and it's far better around town and for hooning around , only time it's not as good as standard is if you have long motorway blasts at high speed . On the X1 you need to change the speedo or put a speedo healer on to correct the reading on yours. 70 MPH highway all day long is only 3600 rpms with US gearing and a 170 rear tire on the X1. I find that to be the sweet spot for cruising and it's also the best balanced at that rpm. I'd consistently gotten right at 50 mpgs when I was using the Buells for trips all over north America (pre-ethanol blends) and that was with the full race kit and 536 cams. But our roads are mostly straight and flat which helps achieve that efficiency. |
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| Author: | gusm2 [ 17 Jul 2020 17:35 ] |
| Post subject: | Re: Sprocket size matters |
Full US gearing on mine when it was on the road Now running 23/58 sprockets and chain  
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| Author: | x1glider [ 17 Jul 2020 20:20 ] |
| Post subject: | Re: Sprocket size matters |
Why so low of a final drive ratio? You doing hill climbs? Pulling a camper? |
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| Author: | gusm2 [ 17 Jul 2020 22:19 ] |
| Post subject: | Re: Sprocket size matters |
x1glider wrote: Why so low of a final drive ratio? You doing hill climbs? Pulling a camper? Restricted to 1/4 miles
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