well fitted it today (Thanks again to Pete for turning the pulley)
well impressed , now i just need the front pulley
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| 1/2 US gearing https://ukbeg.com/forum/viewtopic.php?f=7&t=10055 |
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| Author: | Nutah [ 25 Feb 2011 20:42 ] |
| Post subject: | 1/2 US gearing |
| well fitted it today (Thanks again to Pete for turning the pulley) well impressed , now i just need the front pulley
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| Author: | Nutah [ 03 Mar 2011 11:22 ] |
| Post subject: | Re: 1/2 US gearing |
the standard Buell gearing on my X1 was 55-29 UK gearing ( 55 tooth pulley part no.40244-91) the US option is 61-27 US gearing ( 61tooth pulley part no.40246-91) cheers Dave the US Buell ratio pulleys are a bit hard to find & can be expensive. Sportster rear pulley (part no.40246-91) has 61 teeth this will fit BUT you need to enlarge the central big hole by about 3mm Dia. cheers Pete i only changed the rear pulley on mine which gives 1/2 US gearing , but a marked improvement in bottom end response be aware though this alters your speedo , it will be around 10% optimistic for full US gearing front & rear pulley , you are going to need a US spec speedo or a speedo altering device. |
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| Author: | gunter [ 03 Mar 2011 15:32 ] |
| Post subject: | Re: 1/2 US gearing |
Code: USA mix EC |
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| Author: | Nutah [ 03 Mar 2011 17:55 ] |
| Post subject: | Re: 1/2 US gearing |
| Gunter , have you a MPH version ?
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| Author: | Lucky [ 04 Mar 2011 11:34 ] |
| Post subject: | Re: 1/2 US gearing |
Just multiply by .621 USA mix EC sprocket 27 29 29 pulley 61 61 55 ratio 3,615 3,366 3,034 rpm mph mph mph 2000 41.18 44.22 49.05 2500 51.46 55.28 61.32 3000 61.76 66.34 73.58 3500 72.06 77.40 85.84 4000 82.36 88.46 98.11 4500 92.65 99.52 110.37 5000 102.94 110.57 122.63 5500 113.24 121.62 134.89 6000 123.53 132.68 147.16 |
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| Author: | Gee Tee [ 04 Mar 2011 12:27 ] |
| Post subject: | Re: 1/2 US gearing |
I'm sure I saw a plug in speedo corrector on the Dutch 'Twins' Buell site. Interested in doing this gearing swap on the M2 myself, so was looking at options to correct any mph error I would get afterwards. I'll try and drag out the listing and re-post later. |
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| Author: | Gee Tee [ 04 Mar 2011 14:09 ] |
| Post subject: | Re: 1/2 US gearing |
Here is the one listed for Buells on the Twin Motorcycles website http://www.twinmotorcycles.nl/webshop/a ... Corrector_ |
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| Author: | Gee Tee [ 28 Mar 2011 17:09 ] |
| Post subject: | Re: 1/2 US gearing |
Would the stock 126 tooth belt be long enough to cope with 61 tooth rear pully? Having to swap belt will make an otherwise cheap mod a bit expensive. Busy shopping for a 61 tooth Harley pully now. After riding the M2 this weekend on the stock 29/55 ratio I'm already finding it too leggy, and the 1/2 US spec gearing looks like a good option. |
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| Author: | Maz [ 28 Mar 2011 17:14 ] |
| Post subject: | Re: 1/2 US gearing |
Stock belt is 128T and yes it works fine with half 'n' half gearing. |
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| Author: | mich [ 28 Mar 2011 18:08 ] |
| Post subject: | Re: 1/2 US gearing |
Gee Tee wrote: Here is the one listed for Buells on the Twin Motorcycles website http://www.twinmotorcycles.nl/webshop/a ... Corrector_ Nice one! This is the cheapest one I have ever seen! Off to practice my Dutch 
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| Author: | Gee Tee [ 28 Mar 2011 23:33 ] |
| Post subject: | Re: 1/2 US gearing |
Maz wrote: Stock belt is 128T and yes it works fine with half 'n' half gearing. Thanks maz - thought I saw 126 teeth quoted for M2 somewhere ont' internet |
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| Author: | Gee Tee [ 10 Apr 2011 00:36 ] |
| Post subject: | Re: 1/2 US gearing |
Nutah wrote: :mrgreen: well fitted it today (Thanks again to Pete for turning the pulley) well impressed , now i just need the front pulley Just done the same - the M2 feels a lot better on 1/2 US ratio
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| Author: | Gee Tee [ 14 Apr 2011 13:40 ] |
| Post subject: | Re: 1/2 US gearing |
61 tooth Buell pully for sale on ebay http://cgi.ebay.com/ebaymotors/ws/eBayI ... 0591648021 |
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| Author: | Gee Tee [ 11 Apr 2012 01:02 ] |
| Post subject: | Re: 1/2 US gearing |
I recently swapped to US gearing but the speedo healer I fitted isn't correcting enough. Considering fitting a secondhand US speedo. Would one from a 1999 spec injected X1 work on my 2002 carbed M2? Don't want to drop cash on one only to find it's a non starter. http://www.ebay.co.uk/itm/Buell-electri ... 4163d53654 |
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| Author: | FEI-LO [ 11 Apr 2012 08:50 ] |
| Post subject: | Re: 1/2 US gearing |
Gee Tee wrote: I recently swapped to US gearing but the speedo healer I fitted isn't correcting enough  - GT - the Corrector from Twin claims a 50% adjustment and the ratio difference between full UK and full US Gearing is just under 20% - so I was thinking of buying this model - can I ask why is yours not working ? -
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