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View Full Version : 10.5 nm rear spring



dre62582
08-19-2005, 03:56 AM
I need tech help, I am 6'4'' and 245 lbs, not fat, but have a broad built(football build), I would like to carry a passenger on my 04 factory, but some time ago I was told I would need to re-spring my rear to accept a passenger. I would like to stick to Ohlins, and would not like to spend an arm and a leg for it, I have a bike mechanic who wants to put it on for me as well < $$$.
questions are where do I buy and how long to ship? :blah:
dre

cman6453
08-19-2005, 07:44 AM
Dre - I have one that I no longer have a need for since I sold my bike. :( It is an Ohlins and was never mounted since I'd lost weight and was able to use the OEM spring with no problem. I forget what spring rate it is but I can check and let you know. Shoot me a PM if you're interested.

Chris

amauri
08-19-2005, 08:54 AM
10.5 is not enough for your weight

Apelover
08-19-2005, 02:35 PM
Dre - I have one that I no longer have a need for since I sold my bike. :( It is an Ohlins and was never mounted since I'd lost weight and was able to use the OEM spring with no problem. I forget what spring rate it is but I can check and let you know. Shoot me a PM if you're interested.

Chris

Chris, If you still have that spring, give me the Specs, I might be very interested. Thanks.

dre62582
08-20-2005, 01:47 AM
I know im not a tiny ass ama racer, but shit man im not huge or something! what size spring will fit for me and occasionaly a passanger.
I might so go out and buy a used busa or something!
dre

amauri
08-20-2005, 07:01 AM
The stock spring on a 04 Factory is a 95 N/mm or 542 lbs per inch, about right for a 185 lbs street rider.
The stock Ohlins rear spring from a 00 RSV-R (140 N/mm) would be about right for a 245 lbs rider w/passenger.

dre62582
08-20-2005, 03:18 PM
Well I emailed ohlins so they will tell me exactly what I need by the weight stats, how do u measure nm to weight is it .51nm for every lbs give or take a bit.
dre :cathat:

Jet City Racer
08-20-2005, 03:25 PM
Newton-meters 0.7380 Foot-pounds

aprilia_nut
08-20-2005, 05:04 PM
I had Clarkie throw a 10.5nm spring on my bike and it made a world of difference. I am 6'1" and 250lbs (I am fat). :crybaby:

dre62582
08-25-2005, 12:54 AM
Man is ohlins busy or what??? :WTF:
I emailed them last week and they are not even trying to respond yet.
Guess I will have to email again, and btw clarkie do u have any "fat man" springs for sale :plus: rider.
dre

Jet City Racer
08-25-2005, 02:03 AM
Call Dave at Gp Suspension if you need a spring. He should have it in stock. Otherwise, call Phil at Aftershocks in Palo Alto, Ca.

Both are Eibach dealers.

Apelover
08-25-2005, 07:18 AM
Dre, I'f your still interested in selling your 10.5 spring, I'll take it if you're going to get rid of it. Give me a price.

clarkie49
08-25-2005, 07:37 AM
Man is ohlins busy or what??? :WTF:
I emailed them last week and they are not even trying to respond yet.
Guess I will have to email again, and btw clarkie do u have any "fat man" springs for sale :plus: rider.
dre


nothing in stock at the moment, i would call them rather than email them :)

jwa1
08-25-2005, 10:18 AM
i like this www.feelthetrack.com

imo he is the best and the most knowledgable. aprilia's are famous for being the hardest or most complex bike to tune. at the track dave only charges 20 a day to test and tune your suspension. just my .02

dre62582
08-25-2005, 02:18 PM
Heres what ohlins said "At 245# you do need a stiffer spring. The standard spring is set up for dressed rider weight of 155-175#. For your weight we recommend spring p/n 1091-39. We have 9 in stock. They are priced at $98.95. You can send the shock to us & we will install the spring at no labor charge. Call to order at (828)692-4525. Thank you, Jerry."

Jet City Racer
08-26-2005, 12:24 AM
Heres what ohlins said "At 245# you do need a stiffer spring. The standard spring is set up for dressed rider weight of 155-175#. For your weight we recommend spring p/n 1091-39. We have 9 in stock. They are priced at $98.95. You can send the shock to us & we will install the spring at no labor charge. Call to order at (828)692-4525. Thank you, Jerry."
Don't think twice, do it!!!

:plus:

jwa1
08-26-2005, 01:19 PM
i'll second that :cool:

dre62582
08-26-2005, 03:04 PM
Do i need some kind of special stand and/or do i have to have a support rod for the swingarm. Or can I just lift all weight off the bike and then set it down on a block or some kind of centerstand type support.
It was a definitly a go for the spring change out through ohlins with that deal :lover:
dre

amauri
08-26-2005, 09:30 PM
Several ways to do it.

Hang the bike from the rafters in your garage.
Or, use a steal rod thru the swingarm pivot axle and two jack stands.
Or, if you have solid pegs, just place the jackstands under the pegs.

RDBUL
08-28-2005, 06:27 PM
I to had the same problem,6'2" &260lbs. Talked to Clarkie alot about which spring I should change it too. I had both the front and rear springs changed. The 10.5 will be plenty for you. You might want to think about changing the front ones as well. The bike felt like night and day. I would not think twice. You will enjoy the bike alot better with the proper adjustments. :peace: