What Springs Should I Use?

tuts · Feb 23, 2007

hi,
for my 02 fe650e i need stiffier/new springs for the forks and shock.
i am about 250lbs, with gear on, and ride the desert but also technical.
i cant find a calculator to help determine the proper springs i should use.
got any links? any past experience? any stronger springs for sale?

i have a set of slightly stiffier progressive type springs in the front but
they are not enough.

i have also heard that the rear can be better without the progressive
type spring. any thoughts on that?

thanks
tuts

:devil:

Code:

husabutt · Feb 23, 2007

Give this a try:

http://www.racetech.com/evalving/Sp...r=2002&ml=FC470&formuse=form1&SpringType=Fork

Johnf3 · Feb 23, 2007

tuts said:
hi,
for my 02 fe650e i need stiffier/new springs for the forks and shock.
i am about 250lbs, with gear on, and ride the desert but also technical.
i cant find a calculator to help determine the proper springs i should use.
got any links? any past experience? any stronger springs for sale?

i have a set of slightly stiffier progressive type springs in the front but
they are not enough.

i have also heard that the rear can be better without the progressive
type spring. any thoughts on that?

thanks
tuts

:devil:

Code:

Tuts,
The thing about progressives and big guys is that it is hard to find one with a strong enough initial rate to get the sag right without preloading the spring too much. I happen to prefer the progressive spring, but I'm nearly 25 lbs lighter, and I'm on the strongest progressive spring that Factory Connection makes (9.0/11.5.) None of the OEM progressives will work for me, and for sure not you.

As far as a straight rate spring, I'd reckon a 9.8 or 10.0 straight rate will get you where you need to be. TThe less preload you can put on a straight rate spring to get proper sag, the more progressive and more compliant it will actually feel.

As far as those progressive springs in the front, I have never gotten progressives to work at all on a off-road bike. Save those for a street bike. I would think .48's in the front would work for you.

tuts · Feb 26, 2007

johnf3,
thanks for the info.
do you have any part number for these springs?
any springs to sell?
i appreciate it.
tuts

Johnf3 · Feb 26, 2007

Tuts,
I don't have part numbers, sorry. Any KTM or Husaberg can get you WP springs. Just tell them what weight you want. I don't know how heavy the factory WP springs go as far as spring rates, though. .46 (front) at least, since that is what I am running currently. Not sure on the rear.

Another option would be to buy your springs through Race Tech, or Cannon Racecraft. I have used Cannon several times, and have been happy with the product and service. They will have the spring rates you need , no problem. Cannon Racecraft also makes other companies springs for them, as well. Cannon Racecraft has a nice website, but you will have to look under KTM PDS springs to find what you need. The springs between KTM and Husaberg are identical, so no problem there.

I have 3 or 4 rear springs to fit the WP PDS shock , but none of them will be heavy enough for you.

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What Springs Should I Use?

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