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October 16th, 2016, 11:57 PM   #11
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Originally Posted by Taffy View Post

first of all, I can't see how you need 14mm offset? a bike has to feel right as you drop it into the corner. they feel best with something like 20-22mm offset and I wanted 24mm offset in my last season on the bike.

now that is with the original steering head angle. so 20-24mm.

then on the other hand, my old 400 has a 22.5d headstock and ran 11mm to feel sweet. originally as a sweet handler it ran 18mm. and 18-20mm was the sweet spot. so a 4d headstock change was worth 8mm of offset change.

I would say 24mm offset on yours if a 570, 22mm if a 450. then however many degrees you change the headstock angle by you should then take off 2mm per degree. you can at most make 2d of difference. that is the tops I reckon. so you are looking at the same as SM at around 17mm offset. the lowering process - well I don't know what you will lower it by but it doesn't change the trail at all doing this.

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Taffy
What normally works on an enduro/MX bike is not directly applicable due to how the tires act and the riding.

As far I can see from the parts list the 2009 570FE has 19mm offset triples, and with this setup itll currently wobble if you let one hand off the bar on the straight. If I am to change the geometry and put the bike more on its nose chances are its going even more unstable, so Id like to have a plan to keep that in check.

Rest assured Im not putting anything on my bikes just because someone else says so or that top racers uses a certain part, I will try what works/feels right
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October 17th, 2016, 12:09 AM   #12
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the 570 had 18 OR 20mm.
my bike was as stable as a rock - in the end.
the suspension was quite poor as standard as many here have verified.

I have a spare set of 14s you could try them but I'd like them back. you're as likely to get great info out of at least trying them.

Taffy
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October 17th, 2016, 01:46 AM   #13
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Originally Posted by Taffy View Post
the 570 had 18 OR 20mm.
my bike was as stable as a rock - in the end.
Taffy
Stable when ice racing?
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October 17th, 2016, 06:24 AM   #14
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Gary Connel of Husaberg Rallye Australia ran 16s on one of the 570s for the aust safari, much improved stabilty at speed in soft terrain.

for hard ice you'd need to fit 11 or so to get the same feel
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October 17th, 2016, 07:58 AM   #15
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Originally Posted by TomTom View Post
Stable when ice racing?
it was stable with 22s on it. I didn't have to hold the bars tight at all. well, the proof is in the fact that I rode it like that all season having pulled the 18s off.

I appreciate that the Ice makes some difference and I don't know what that is BUT I do know a bit about TCs. if you have read about the BEARUP then you'll know that.

as I said, the suspension is poor from the off: forks are spikey, rear end lacks damping in the midrange. Spikey forks = need more trail and a steering damper. I can't imagine what it is like desert rallye racing. I recall having to go flat out across a farmers field diagonally and it had been deeply ploughed. I was more worried about the sheer size of the bumps I was hitting while nailed as I ever was about a set of flapping handlebars.

Taffy

Last edited by Taffy; October 17th, 2016 at 08:02 AM.
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October 17th, 2016, 08:20 AM   #16
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Originally Posted by Taffy View Post
it was stable with 22s on it. I didn't have to hold the bars tight at all. well, the proof is in the fact that I rode it like that all season having pulled the 18s off.

I appreciate that the Ice makes some difference and I don't know what that is BUT I do know a bit about TCs. if you have read about the BEARUP then you'll know that.

as I said, the suspension is poor from the off: forks are spikey, rear end lacks damping in the midrange. Spikey forks = need more trail and a steering damper. I can't imagine what it is like desert rallye racing. I recall having to go flat out across a farmers field diagonally and it had been deeply ploughed. I was more worried about the sheer size of the bumps I was hitting while nailed as I ever was about a set of flapping handlebars.

Taffy
Thanks for the concern but it doesnt help here, ice is too different.

Last edited by TomTom; October 17th, 2016 at 08:23 AM.
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October 19th, 2016, 10:09 AM   #17
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Eager to get going I disassembled the forks today, get back with pics as it progresses.


Last edited by TomTom; October 19th, 2016 at 10:56 PM.
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November 11th, 2016, 07:17 AM   #18
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Forks lowered
Tomorrow Ill put them together and see how it pans out on the bike.

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November 11th, 2016, 07:27 AM   #19
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That will make the fork stiffer aswell. I look forward to see what your experience and opinion is regarding stiffer forks/grip on ice.
What more did you do to the forks to lower them? Or did you just ninja-cut the springs?
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November 11th, 2016, 07:33 AM   #20
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Its the enduro springs cut so I think they will be just about right in stiffness, made a new nylon distance 70mm longer.
I bet I'll wake up at five in the morning

Originally Posted by jon andersson View Post
That will make the fork stiffer aswell. I look forward to see what your experience and opinion is regarding stiffer forks/grip on ice.
What more did you do to the forks to lower them? Or did you just ninja-cut the springs?
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Last edited by TomTom; November 11th, 2016 at 07:40 AM.
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125, 14mm, 2003, 570, ktm, offset, triples



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