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Buell Forum » 1125R Superbike Board » Archive through April 18, 2012 » Spring weight « Previous Next »

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Battyone
Posted on Wednesday, April 04, 2012 - 06:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hi Guys anyone got any specs for standard rear spring? I want a softer/lighter one.
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Jdugger
Posted on Wednesday, April 04, 2012 - 08:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It's a progressive rate spring, so it works "well" across a range of rider weights.

What's your weight?

I've run a 575lb successfully -- I'm around 175-180 before gear. I've gone back down to a 550, though, and for the really bumpy tracks around here it's working a bit better.

The EBR/Showa shock ships with a 575, and it's a decent choice for the money.
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Nuts4mc
Posted on Wednesday, April 04, 2012 - 09:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

go here: scroll down for some P/Ns and pix...

http://www.badweatherbikers.com/buell/messages/290 431/618487.html?1302479534
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Battyone
Posted on Wednesday, April 04, 2012 - 09:28 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Nice one nuts,great info.

I'm 200lb plus gear,but even with the long arm I'm on minimum preload and it's too firm.Using minimum compression damping too.

On a standard bike,try removing the belt then checking suspension movement!!! it's interesting...I've been helping Willie with his prototype sprung tensioner,definitely helps increase movement.
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Nuts4mc
Posted on Wednesday, April 04, 2012 - 11:02 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

onebat...be careful you might make the rear wheel bearings last longer! BTW...I'm at 195 in my Bday suit - the bikes are sprung toooo stiff for backroad use...try and balance the front and back..or you'll be riding a Hobby Horse!
this guy visited our club last month - kinda goes by the mantra "let the bike do the work" when it comes to suspension set up ...he's an old guy like me...good stuff:

(Dave Moss, Catalyst Reaction Suspension)

http://www.youtube.com/watch?v=vU5ZOjT1ipk

good luck with the tensioner!
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Battyone
Posted on Wednesday, April 04, 2012 - 11:39 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

On a standard bike I'm pretty sure belt length has a massive effect on suspension travel.Yes spring is too stiff but the difference in movement when the idler is removed is staggering.

I'm chain drive-150links- and the pivot geometry is causing me serious probs with chain tension!

My fault for wanting a lot of travel to help weight transfer.
Your old post will help loads though,at least I have a starting point now,I'll start with cheap springs,then when i find a weight that works I'll try a better quality one. thanks loads
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Nuts4mc
Posted on Wednesday, April 04, 2012 - 12:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

onebat - there is a "idler" sprocket for the chain set up on the EEEBBBRR site...you might have a look - can't afford a new wheel for the 3 brg set up - but I do have rice burner wheels that may work (either belt (with an adaptor)or chain) and they have 3 brgs!...trying to get ready for a vintage race at the end of the month - a rice burner rear wheel is a project for another time...again, good luck over there!
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