2017 spring rates. With ddc

[Corkgsxr]

I weigh 80kg without gear. I've always found the bike hard sprung regardless of setting on dash. -6 all round is still a hard bike. Very crashy on bumps.

My rear preload is already backed right off and only have 15-20 mm sag. I'll measure exactly again but it doesn't really drop much at all when I sit.

I checked racetech spring rate and according to them they recommend harder spring for my weight.

Has anyone check what the front and rear spring rate actually is?

Or anyone in the 80kg range on a 2017? Is it fine for you or did you change?

 

[fast_ryan]

DDC Spring Rates

The DDC front spring rates are 11 Nm (Right Fork Leg) / 9.5 Nm (Left Fork Leg) and the rear spring is 9.5 Nm for the 2015+ model. I fitted new springs from alpha Racing and MCT made some modifications to the DDC fork internals together with an air gap and oil change which improved the bike hugely on track. Speak to a suspension specialist directly and they will be able to advise you on what spring rates best suit your type of riding and weight.

 

[fast_ryan]

alpha Racing

https://shop.alpharacing.com/shop/i...Path=1_17_19&zenid=b5qhj1qnd97flpieumib8v8go4

 

[alex]

https://s1000rrforum.co.uk/showthre...000RR-Grey-Black&p=89109&viewfull=1#post89109

Spring finish is, industrial to say the least. I'd expect a proper seating flat end not that.
9.5 ish and 11.5 ish springs in the 17 forks, like the 15/16 before. I say ish as there's real variation 11.1-11.5 has been seen by MCT.

 

[fast_ryan]

DDC Spring Rates

You will always get some degree of variation when it comes to OEM spring rates as ultimately they are a mass produced item.

 

[Corkgsxr]

What weight without gear are you Alex.

No matter what I've tryed I've still found it feels too harsh when roads get bumpy

 

[fast_ryan]

DDC Spring Rates

Read this thread as spring rates are not exclusively linked to rider weight.

https://s1000rrforum.co.uk/showthread.php?9409-Dave-Moss-Tuning-S1000RR-2015-Suspension

 

[alex]

What weight without gear are you Alex.

No matter what I've tryed I've still found it feels too harsh when roads get bumpy

I'm getting on for 90kgs kitted up. And I now run 10NM front springs. I'd go for 9.75-10's if you're doing spirited riding/track. The ride on my bike is pretty good.
Rear shock is a 9.5Nm I think -> Which is good for 90-95kg riders...it's verging on too stiff for me. I am thinking a change to a 8.75NM might work for you but you should talk to a suspension tuner and get what they suggest.

 

[Corkgsxr]

Rang one fella there and he has a suggestion. Will zero preload I may be going straight to the harsh part of the rising rate spring. Suggests trying adding in 5 it 6 turns to see how it is

 

[Corkgsxr]

Alex that's what I can't figure. I'm in that range but find it hard work

 

[alex]

You need zero preload - you're too light. (There's 8mm at zero).
The springs are not rising rate/progressive.
They are constant/linear.

 

[Corkgsxr]

It's worth a try. Costs nothing. Maybe I'm wording it wrong

 

[soofsayer]

It's worth a try. Costs nothing. Maybe I'm wording it wrong

Have you put a zip tie on one of the front forks to see where they drop to on a ride?

 

[alex]

^^^ that and get a camera on it to record the travel you see.
When the suspension is right you should bobbing around the 25-75% of the stroke. When they are too stiff you end up in the 50-100 range (fully out).

 

[fast_ryan]

Fork Travel

+1. This is good advice.

 

[Corkgsxr]

What camera are ya using for that

 

[alex]

I use a Drift Ghost-S but the Stealth is smaller/cheaper.

I have ?NorfolkBiker? vids on youtube showing the positioning and what you can see.



- Sent from Mobile

 

[Corkgsxr]

We see can we get a deal over Christmas. Next thing is 2 if us are getting the bikes dynoed on the 28th. 2015 s1000rr with Ar end can. And mine

 

[Tim @ Lind]

Yeah, you can't ask Ryan. He's about 60kg while carrying the weekly shop :highly_amused::highly_amused: