Springs for a 300lb rider.

[HAWKWIND]

300lb stud needs shock and fork springs for a 2006 EC300. I ride slow in rough rocky / root infested trail.
What spring rates would you reccomend ?

[jostby]

I have .46's in my WP's and a 5.7 on the rear. (.42 and 5.1 originally). To make that radical of a change you will need to revalve also. I had Les at LTR do mine and he set it up exactly how I asked. If you don't revalve you might as well leave it stock and try to compensate with the adjustment knobs.

[bergerhag]

As a comparison, I am at 117 kg (~260 lbs) fully geared, I run K 0.48 fork springs and 62 N/mm rear spring. Note that this is on the heavier FSE, which have 54N/mm rear spring stock, as opposed to the 300 which has 52 N/mm.

[iancp5]

Originally Posted by bergerhag

As a comparison, I am at 117 kg (~260 lbs) fully geared, I run K 0.48 fork springs and 62 N/mm rear spring. Note that this is on the heavier FSE, which have 54N/mm rear spring stock, as opposed to the 300 which has 52 N/mm.

I might of gone too light! Just received a 6.0 for my FSR and I'm about the same weight. Although I do a lot of woods stuff. Was planning 0.48 forks though.

How do you find the 6.2 on Gnarly terrain?

[bergerhag]

it is a bit rough on gnarly stuff, I would probably been fine on the 60N/mm spring too. I have also heard somewhere that the tolerances on the spring rates ar quite big, so the spring marked 60N/mm migth just as well be a 59 or a 61.

Note that I am currently running with 14mm preload on the rear, mostly to keep the steering geometry where I want it without loosing too much ground clearance. This is because the K0.48 springs are 15 mm longer than the stock 0.42's.

However I must point out that running 0.48 springs makes up for a bumpy ride when it comes to low speed rock gardens...

[HAWKWIND]

I think 48's for the front will work. Is anything over 6.0 to stiff for the shock?
Remember I ride slow and steady.

[mxdj2003]

just use the spring calculator on the Race Tech website, its alot easier and cheaper then guessing

[iancp5]

Fitted the springs tonight and I was surprised how much preload the FSR needed with a 6Nm to give 35mm static.

[nick790]

Originally Posted by iancp5

Fitted the springs tonight and I was surprised how much preload the FSR needed with a 6Nm to give 35mm static.

Rear spring?

Where did you get it from?

[skid jackson]

What kind of rear shock do you have. I spoke with the ohlins guy in the states and he said he did not like to see any more than 6 to 8 mm preload. If you had to do more than that he was of a mind to go up another size on the spring.The guys at factory connection were of similar opinion. Some times a heavier spring in the back can give you a more plush ride. my 06 300 has a 54 on the back and at 8mm it has something like 5 1/2 to 6 inches of race sag. bet it would ride better with a 56 back there. I'm no pro but 15mm preload sounds like alot.