Ping TOG & other experts - Scrambler steering
in [Motorcycles]
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From: The Wearin' o' the Green on 15 Feb 2010 15:12 A while back, in "Re: Hard decision - choosing a bike" you wrote some unflattering things about the Hinckley Triumph Scrambler, including: > Horrible, antiseptic, odd steering, slow, > just *nasty* Meanwhile I'm planning to build a Bonneville around an '07 Scrambler frame, and -- assuming no frame geometry changes between '07 and '09 [?] -- I found the following comparative specs [on www.totalmotorcycle.com]: Rake [degrees] / Trail [mm] / Wheelbase [mm] '09 Bonneville 27/106/1453 '09 Scrambler 27.8/105/1500 I'm no expert on the effects of steering geometry on handling so I need to ask - how significant are these differences? Will I always have "odd steering"? IOW is this whole project doomed to disappointment. Any help appreciated TIA, SQ '06 Zuk S40 / '85 Dnepr MT-11 / various salvage cases
From: 悟 on 15 Feb 2010 19:23 On Feb 15, 12:12 pm, The Wearin' o' the Green <no.s...(a)no.spam> wrote: > I'm no expert on the effects of steering geometry > on handling so I need to ask - how significant are > these differences? Will I always have "odd steering"? > IOW is this whole project doomed to disappointment. There's more to the handling and steering than just the rake and trail numbers vs. the wheelbase. Think about tire profiles. You can change the whole handling/steering by selecting different tires or by changing the width of the tires. If you get the Triumph up and running, try the original equipment tires first, and if they are too slow steering, try out a Metzeler front tire (like a Pilot Sport, if you can find one that fits your rim size) with a pointier profile to speed up turning into a corner. Increasing the rear tire width will slow handling down. But Ducati riders have been known to use a rear tire 10mm narrow than the OEM tire to speed up handling. My Yamaha FZR1000 has 27 inches of rake with about 4 inches of trail and a 57 to 58 inch wheelbase and it's not a nimble motorcycle in the twisties unless I mount a pointy profile front tire to speed up the steering. A pointy profile Japanese Dunlop was what came on the front, but it wore out is less than 2000 miles. I tried using a taller profile Bridgestone BT-020 front tire on recommendation of various enthusiasts, but it turned a stable sportbike into a slow-steering POS that out-tracked badly in tight turns.
From: Snag on 15 Feb 2010 19:32 ? wrote: > My Yamaha FZR1000 has 27 inches of rake Another statement that points out your stupidity and inexperience . RAKE IS MEASURED IN DEGREES . -- Snag "90 FLHTCU "Strider" '39 WLDD "PopCycle" BS 132/SENS/DOF
From: 悟 on 15 Feb 2010 21:52 On Feb 15, 4:32 pm, "Snag" <snag_...(a)comcast.net> wrote: > ? wrote: > > My Yamaha FZR1000 has 27 inches of rake > > Another statement that points out your stupidity and inexperience . Oh. So you've never posted a message with a typographical error, and that means that I can't call you "stupid" or "inexperienced" in return? But maybe I'm above disrespecting people who haven't *earned* disrespect through multiple negative contacts? Keep it up for about ten years, and maybe I will notice your rudeness.
From: Snag on 15 Feb 2010 22:06
? wrote: > On Feb 15, 4:32 pm, "Snag" <snag_...(a)comcast.net> wrote: >> ? wrote: >>> My Yamaha FZR1000 has 27 inches of rake >> >> Another statement that points out your stupidity and inexperience . > > Oh. So you've never posted a message with a typographical error, and > that means that I can't call you "stupid" or "inexperienced" in > return? > That wasn't a typo . > But maybe I'm above disrespecting people who haven't *earned* > disrespect > through multiple negative contacts? > > Keep it up for about ten years, and maybe I will notice your rudeness. It appears to me that you already have . And I've gotten along just fine all these years without your respect , don't think I'll be missing it in the future either . -- Snag "90 FLHTCU "Strider" '39 WLDD "PopCycle" BS 132/SENS/DOF |