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| Twins Talk Discussion of Hinckley Triumph Twin related matters and topics. |
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12-04-2012, 02:56 PM
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#21 (permalink)
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Lifetime Premium
Site Supporter Formula Extreme Main Motorcycle: Thruxton
Join Date: Jul 2008
Location: Toledo/Wauseon, Ohio
Posts: 498 Other Motorcycle: 15th Anniv. Speed Triple Extra Motorcycle: 1970 TR6 Bobber
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Quote:
Originally Posted by rodhotter
very nice, you need a scootworks belt drive to keep them nice, especially the machined finish, i installed one last week, only 800 miles already tired of greasy rear wheel + tire, guess my harley spoiled me, everything else on the bonnie is better though!!
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Does the belt drive lose any clearance between the edge of the tire and the chain/belt in your experience? With these wider wheel/tire combos, there is a loss of clearance, and I like the idea of running a belt, but I wasn't sure if the belt would clear the tire.
The other problem is that I race the Thruxton, and I do a LOT of sprocket changes. I'm not sure a belt drive would allow me the options I need.
__________________
2004 Thruxton
TPUSA 904, TPUSA Stage 1 Head, FCR 39, Modified Ignitor, D&D 2 into 1, HARK, FEK, Barnett clutch springs, Pazzo levers, Ikon shocks, Works fork springs, Carrozzeria wheels, custom a123 LiFePO4 battery system and more...
Last edited by englane; 12-04-2012 at 03:00 PM.
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12-04-2012, 04:23 PM
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#22 (permalink)
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Senior Member
Grand Prix 500 Main Motorcycle: Triumph Scrambler
Join Date: Nov 2011
Location: Houston,TX
Posts: 137 Other Motorcycle: Harley Dyna Extra Motorcycle: Royal Enfield 350cc
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Quote:
Originally Posted by Easy13
'97 Honda CBR F3 wheels and forks: Longer fork tubes allow for clipons above the upper tripleclamp, Cartridge fork innards for a superior ride (preload and rebound adjustments), dual 320mm disc brakes up front. 17" wheels at both ends, 120-60/17, 160-60/17 sport touring tires, and a total of 20lbs of unsprung weight/rotating mass gone from stock. Personally, I think they look pretty badass as well.

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Will the stock rotor on a scrambler front/rear & also the sprocket will they work fine if I chose to go with the F3 wheels setup.
or do I need to change a whole lot in the front like hubs/rotors/brakes/fork tube lenght and in the rear do I need to change my rotors/sprocket etc...
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12-04-2012, 05:05 PM
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#23 (permalink)
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Senior Member
World SuperBike Main Motorcycle: 2004 Thruxton
Join Date: Jan 2008
Location: Grand Rapids, Michigan
Posts: 1,922 Other Motorcycle: 1954 BMW R25/3 Extra Motorcycle: 1971 CB350
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Quote:
Originally Posted by englane
The other problem is that I race the Thruxton, and I do a LOT of sprocket changes. I'm not sure a belt drive would allow me the options I need.
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Bingo. #1 reason not to have a belt...
Regards,
--Rich
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12-04-2012, 06:16 PM
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#24 (permalink)
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Lifetime Premium
Site Supporter Grand Prix 500 Main Motorcycle: 2010 Thrux
Join Date: Aug 2009
Location: Austin, TX
Posts: 108
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Quote:
Originally Posted by Hypurone
As stated, reduction of unsprung weight is stunning and has a tremendous effect on handling
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Can someone give me an idea of what the effects are, and what the bike actually feels like going to one of these lighter wheel sets? Were the changes all good in your opinion? Obviously, a lighter bike is better re: power to weight, but what effects were there in turning/steering exactly?
__________________
-Eric
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12-05-2012, 06:16 AM
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#25 (permalink)
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Senior Member
SuperSport Main Motorcycle: Triumph Bonneville
Join Date: Aug 2008
Location: Wirral UK
Posts: 1,239
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Quote:
Originally Posted by illmonk
Can someone give me an idea of what the effects are, and what the bike actually feels like going to one of these lighter wheel sets? Were the changes all good in your opinion? Obviously, a lighter bike is better re: power to weight, but what effects were there in turning/steering exactly?
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I fine the bike drops into corners better.
Plasma.
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12-05-2012, 09:54 AM
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#27 (permalink)
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Senior Member
Formula Extreme Main Motorcycle: I can't decide!
Join Date: Jul 2010
Location: NorCal
Posts: 445 Other Motorcycle: Ducati Monster S4RS
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Quote:
Originally Posted by illmonk
Can someone give me an idea of what the effects are, and what the bike actually feels like going to one of these lighter wheel sets? Were the changes all good in your opinion? Obviously, a lighter bike is better re: power to weight, but what effects were there in turning/steering exactly?
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Unsprung weight is the best performance mod you can do, period. Reducing it with a set of lighter wheels/brakes/forks does everything you'd imagine for power to weight ratio but also gives lower MOI (moment of inertia) and allows the suspension dynamics to be tuned "lighter" (you don't have to crank up the spring rate, damping, compression etc to compensate/control heavy wheels/parts).
Better MOI allows the wheels to move off axis much quicker and with less effort. The bike feels lighter, takes less effort to make it handle and do what you want when you want it. This is amplified greatly at hooligan speeds and maneuvers. Simply put, IT'S ALL GOOD.
That said, there are some wheel changes that can cause some issues. Like when going from an 18 front to a 17. This changes rake, steepening the fork angle. Bikes can get very nervous at speed with these types of changes. You usually need to offset it by lowering the rear and/or adding a damper....
__________________
Chuck
'10 Thruxton 944cc - In the Faster Color
"Ridin' It Like I Stole It"
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12-05-2012, 10:07 AM
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#28 (permalink)
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Senior Member
SuperBike Main Motorcycle: 04 Thruxton
Join Date: May 2008
Location: Mill Valley (Bay Area), USA
Posts: 1,436 Other Motorcycle: 13 Str Trple R
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I still have OEM wheels but I expect the impact of lighter wheels is significant. Every time I take my wheels to have a new set of tyres fitted, I struggle to comprehend the weight of the wheels. Even my tyre guy has commented on how heavy the wheels are. Imagine the gyroscopic forces resisting a change in direction on wheels this heavy. I continue to pray Carro will reconsider a run of a wheel set for the early Thruxtons
__________________
2004 Thrux, FCR39's, Uni, 813 cams, Works shocks, drilled Ricor valves, Pieman ignitor, green springs, Beringer caliper, preds, damper, brace, Corbin Gunfighter, custom tinware, JMC swingarm, Brembo radial M/C, oil cooler, rearsets, dropped forks
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12-06-2012, 09:26 AM
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#29 (permalink)
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Senior Member
Formula Extreme Main Motorcycle: 2012 base bonneville
Join Date: Jun 2012
Location: coal township pa USA
Posts: 644 Extra Motorcycle: 2006 XL1200L
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on the scootworks.com belt drive, check their site, they are in N.C. USA kits are $579 delivered,they use latest belt technology so belt width very close to chain size, little to no stretch one adj at about 3000 miles is usually it, pulley's are black on rear or sorta silver-bronze finish, excellent install directions, they give all tool sizes needed as well, gearing is a very little up, i didn't really notice much in my first ride the other day 65 degrees in dec in pa WOW! their service is excellent theres a FAQ any they answer calls + e-mails quickly very satisfied!!!! one not they give a small extention on rear chain guard mounting, on my 2012 mag wheel bonnie i flattened the bracket from te screw mounted to frame up to the guard itself using a vice with rags to protect paint, this with a little tweak opening the 90 degree bend at the rear of guard and tweak at the shock offset in guard gave me sufficient clearance, i don't how to post pics but prolly e-mail one if anyone wants to see or post, beautiful and comfortable bitubo WME shocks will be in pic also
Last edited by rodhotter; 12-06-2012 at 09:35 AM.
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