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-   -   Does jacking the back up work (http://forums.sv650.org/showthread.php?t=121418)

boo86 10-12-08 04:33 PM

Re: Does jacking the back up work
 
Quote:

Originally Posted by tonny006 (Post 1690538)
When ever i see adverts for shorter dog bones to jack the back up,they sap how it sharpen the front up and make it handle better.
Do racers use them and does it work or is it a sales ploy?

I've got the back up and the front down. It ran lovely with rensports but when I changed to Michelin races it was too much so I'm thinking of putting the front back to stock, It's about 5mm down at the moment.
Different tyres make a big differnece.

johnnyrod 11-12-08 12:30 PM

Re: Does jacking the back up work
 
I've got JHS shorter dogbones and also the rear Ohlins at full extension (added it afterwards, and front end is sorted though not dropped the yokes), thought I'd give it a try and if it tried to kill me I'd back it off. It's borderline unstable but you can change direction mid-corner by swilling tea around in your mouth. No steering damper, and no tankslappers so far, been a few years now.

vardypeeps 11-12-08 12:50 PM

Re: Does jacking the back up work
 
I think that Bandit Mania do Jack-up kits for SV's
I got one for the Bandit 600 from there and they gave me free fork spacers to stiffen the front abit more.

I ABSOLUTLY LOVED that bike after that mod but then I crashed it into a sheep. Damn

St0rmer66 11-12-08 06:15 PM

Re: Does jacking the back up work
 
I would change the shock first, the GSXR one is probably longer anyway. I found changing to a ZX10R shock that it turned in sharper (but not too much, just enough). Setting up the preload correctly also made a big difference and I have the rebound and compression set slightly on the harder side of comfortable. Front springs were replaced with Hagon progressives and slightly thicker fork oil (10w). If you put too thick oil in then it will be like having iron bars for forks.

boo86 12-12-08 08:15 AM

Re: Does jacking the back up work
 
Quote:

Originally Posted by St0rmer66 (Post 1716147)
I would change the shock first, the GSXR one is probably longer anyway. I found changing to a ZX10R shock that it turned in sharper (but not too much, just enough). Setting up the preload correctly also made a big difference and I have the rebound and compression set slightly on the harder side of comfortable. Front springs were replaced with Hagon progressives and slightly thicker fork oil (10w). If you put too thick oil in then it will be like having iron bars for forks.

In the forks I run 20 weight, home made ali spacers and 0.9nm / mm forks and it's spot on. It's a race bike though and never leaves the track.

St0rmer66 13-12-08 04:54 PM

Re: Does jacking the back up work
 
Quote:

Originally Posted by boo86 (Post 1716653)
In the forks I run 20 weight, home made ali spacers and 0.9nm / mm forks and it's spot on. It's a race bike though and never leaves the track.

On a smooth surface it's fine having such stiff forks, but I only use my bike on the road :) .

northwind 13-12-08 09:36 PM

Re: Does jacking the back up work
 
That's a bit of a daft comment, spring rate is dependant on rider and bike weight so that might not be a stiff rate for him at all.

I run mine very tall at the back and a bit short at the front, and love it, it turns ridiculously fast and easily. But I wouldn't ask this of it with standard suspension, the standard stuff isn't too hot and so the relaxed standard geometry helps take the pressure off it a bit. As many people have said it's purely personal taste, and it's not too expensive or difficult to do so at worst you can redo it.

yorkie_chris 14-12-08 02:23 PM

Re: Does jacking the back up work
 
Remember, jacking the back up will also weight the front more, so jacking back up with standard forks isn't too good an idea

johnnyrod 14-12-08 06:44 PM

Re: Does jacking the back up work
 
Northy I think by stiff they weren't being that specific about spring rate alone. I think that combo would be too much for real B roads though

yorkie_chris 14-12-08 07:01 PM

Re: Does jacking the back up work
 
Even if you're 20 stone?


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