Rear Suspension set-up

Luddite · 20-05-2018, 07:09 PM

Check the static sag (using the guidance that rollo provided) and also the dynamic sag, i.e. with you and your riding gear on board. You'll probably be able to get the correct static sag (5-15mm) but, if you can't get within the range 25-35mm (or about 25% of the available travel) by adjusting the preload with you on board, then you'll benefit from a lighter spring.

If your sag is ok, check your compression damping and try reducing it if it's adjustable.

I'm just about to try a softer spring on my Evo as I feel the 115N/mm may be too firm for my riding style. The new spring should arrive this week. I'll post a report on that and also the Sealey spring compressor that I've also bought shortly...

chris.p · 20-05-2018, 07:31 PM

Quote:

Originally Posted by Luddite

Check the static sag (using the guidance that rollo provided) and also the dynamic sag, i.e. with you and your riding gear on board. You'll probably be able to get the correct static sag (5-15mm) but, if you can't get within the range 25-35mm (or about 25% of the available travel) by adjusting the preload with you on board, then you'll benefit from a lighter spring.

If your sag is ok, check your compression damping and try reducing it if it's adjustable.

I'm just about to try a softer spring on my Evo as I feel the 115N/mm may be too firm for my riding style. The new spring should arrive this week. I'll post a report on that and also the Sealey spring compressor that I've also bought shortly...

In most cases you should not need a spring compressor for a rear shock, just winding off all the preload should be enough to allow you to take off the bottom support and then slide the spring off.

Luddite · 20-05-2018, 07:34 PM

Quote:

Originally Posted by chris.p

In most cases you should not need a spring compressor for a rear shock, just winding off all the preload should be enough to allow you to take off the bottom support and then slide the spring off.

We shall see! Watch this space...

Luddite · 20-05-2018, 08:25 PM

You could be right, Chris.

My spring's free length is, I think, 170mm and I reckon there should be over 180mm clearance with the collars wound back, sooo...

Anyone want to buy a spring compressor?!

20-05-2018, 07:09 PM	#1
Luddite Registered User Join Date: Aug 2011 Location: Southampton Bike: M1100evo Posts: 2,465	Check the static sag (using the guidance that rollo provided) and also the dynamic sag, i.e. with you and your riding gear on board. You'll probably be able to get the correct static sag (5-15mm) but, if you can't get within the range 25-35mm (or about 25% of the available travel) by adjusting the preload with you on board, then you'll benefit from a lighter spring. If your sag is ok, check your compression damping and try reducing it if it's adjustable. I'm just about to try a softer spring on my Evo as I feel the 115N/mm may be too firm for my riding style. The new spring should arrive this week. I'll post a report on that and also the Sealey spring compressor that I've also bought shortly...

20-05-2018, 08:25 PM	#4
Luddite Registered User Join Date: Aug 2011 Location: Southampton Bike: M1100evo Posts: 2,465	You could be right, Chris. My spring's free length is, I think, 170mm and I reckon there should be over 180mm clearance with the collars wound back, sooo... Anyone want to buy a spring compressor?!