OzVMX Forum
Marque Remarks => Suzuki => Topic started by: maxi81 on April 17, 2011, 09:45:00 pm
-
(http://i1033.photobucket.com/albums/a420/motoguy81/P1010725.jpg)
Finally got the engine back in the bike. Looking forward to kicking it over ;D
-
Nice pipe..is that a Proform?
-
yeah mate it is
-
looks great, currently restoring a 1980 rm250 and 400 myself at the moment and i can only hope they turn out half as good as this
-
Gday Max,
Great job on the rebuild.
Here is pic of my 1979 RM400N with the same pipe 8)
(http://img.photobucket.com/albums/v318/Airfireman/PA150404.jpg)
Tim
-
Looks nice Maxi. Be sure to give it a firm boot!
-
(http://img.photobucket.com/albums/v318/Airfireman/PA150404.jpg)
Are those shocks a little long for that bike?
I'd agree with that.
-
Hey guys,
Yes, well spotted.
The only Onlins shocks i found were 15mm longer.
I have pushed the forks tube through the triple clamps but what i should of done was remove and reweld the mounting brackets on the swingarm further down to compensate.
Cheers
Tim
-
Hey guys,
Yes, well spotted.
The only Onlins shocks i found were 15mm longer.
I have pushed the forks tube through the triple clamps but what i should of done was remove and reweld the mounting brackets on the swingarm further down to compensate.
Cheers
Tim
Hey Tim,
I wouldn't go cuttin' up your swingarm, just get some spacers put in the shocks to shorten them to the correct length.
Much simpler…
-
It's too easy to just put a spacer in the shocks, you can get them from Cramers or have a couple made. There will still be plenty of shock travel there.
-
Says the professor :D
So you're an Ohlins expert now Einstein??
-
AND we're into it, ringside Friday night. In the blue corner... ::)
-
Says the professor :D
So you're an Ohlins expert now Einstein??
Are you a trained technician ?
Go back to your cheap chinese pogo stick factory.. 2 wheeled motocross bikes are way over your head. :-*
-
Any credentials ? Or just the usual keyboard jokey ego outbursts Jonny ?
Mate i really don't have any interest in explaining myself or communicating with you...
-
yes he has more than you think ;)
-
Thanks for the info...
I dont really understand the spacer fitment??
At the moment i have just pushed the fork tubes through and will get to the problem later.
I have a TM400 and a RM370 to play with and looking at shocks for those?
Any recomendations????
Tim
-
Thanks for the info...
I dont really understand the spacer fitment??
Hey Tim,
A shock guy can open up the shocks, machine a spacer [15mm in your case] that sits under the piston to effectively shorten the length of the shock. You will loose 15mm of shock travel, but it will bring your suspension back to standard geometry.
thanks
VMX42
-
silly question Jeff - this may bring the travel to where it should be but if the shock body is too long that isn't going to change so the stance of the bike sitting there would still look like "arse up" wouldn't it?
-
Yes i now understand what your talking about.
I could be a very costly exercise.
Thanks for the info
Tim
-
Hey Ross,
The original post said that the shocks were 15mm too long, so a 15mm internal spacer would restore the shocks to the correct length and thus to the original geometry.
But you would need to carefully measure the shocks and the resultant loss of travel to work out whether or not the reduction in wheel travel is acceptable. If the loss of wheel travel is too great, then you would have to do as Walter says and shorten both the shaft and body.
I would suggest a visit to an experienced suspension shop to work out which way to jump. If it comes down to cost then the spacers would probably be the cheapest…
In the end it's up to Tim as it is his bike, but I reckon if you rode it the way it is now you would have serious chain tension issues, and with the reputation these RMs have for throwing chains and destroying their crankcases I wouldn't risk it. But then again I am paranoid… :D
VMX42
-
Either way of fitting spacers or cutting the shaft/body length will have issues with the springs and pre-load.
VMX42 - I have had the shocks fitted and raced with for the past 18 months and there has never been an issue of chain tension and never thrown a chain yet!!!!!
I push the bike really hard as well..
Tim
-
I have had the shocks fitted and raced with for the past 18 months and there has never been an issue of chain tension and never thrown a chain yet!!!!!
Good news :D
Either way of fitting spacers or cutting the shaft/body length will have issues with the springs and pre-load.
Yes, you will have to take the new shock length into account and adjust your spring pre-load, but I don't think you will have any issues unless the primary springs are too long to actually fit the revised shocks. But I just had a look at the photo you posted and you might be right as you don't have much preload room left as it is.
All the more reason to consult a reputable suspension technician.
-
Wasp...If i go for a set of Promax shocks wont i have to get them revalved / sprung to my weight and ability??
I had these Ohlins revalved an sprung by SuspensionRus in Melbourne, but silly me was too naive at the time to have them shortened to length.
Tim
-
Yeah the bike did tip nose down so i pushed the fork tubes through and kept the power on ;D
Wasp - The promax suspension come comp/rebound adjustment??
Tim
-
Hey Ross,
The original post said that the shocks were 15mm too long, so a 15mm internal spacer would restore the shocks to the correct length and thus to the original geometry.
But you would need to carefully measure the shocks and the resultant loss of travel to work out whether or not the reduction in wheel travel is acceptable. If the loss of wheel travel is too great, then you would have to do as Walter says and shorten both the shaft and body.
I would suggest a visit to an experienced suspension shop to work out which way to jump. If it comes down to cost then the spacers would probably be the cheapest…
In the end it's up to Tim as it is his bike, but I reckon if you rode it the way it is now you would have serious chain tension issues, and with the reputation these RMs have for throwing chains and destroying their crankcases I wouldn't risk it. But then again I am paranoid… :D
VMX42
Not challenging your experience VMX42, but I raced every big bore RM from 370 B to 500 F back then and continue to, and have NEVER thrown a chain. I think, from MY point of view, that's a pretty good record ;D