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February 26th, 2018, 06:20 AM   #11
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As far as why the factory recommended rear sag doesn’t seem to work, your guess is as good as mine. I do know less sag worked better for me, on the trail and racing Supermoto.
Just the way the chassis works.
I also ran 14mm triples for supermoto, and they worked great in the woods as well. Never felt the need to change them back when trail riding.
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February 26th, 2018, 08:24 PM   #12
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Alright so I've just measured the unladen sag (on a stand) & laden (on the ground, bike supporting only it's own weight - after pushing down a few times and letting the suspension settle).

Here is the results.

Unladen - 691mm (from center of rear axle to bottom of a point i've marked on rear fender)
Laden - 649mm (from center of rear axle to bottom of the same point i've marked and measured the unladen measurement).

From this we see there is a whopping 42mm of static sag.

This seems like a massive amount considering I've read numerous amounts that the static sag should be between 10-30mm.

Is this a result of the spring being preloaded massively?

What is the cause of action to take from here?

Obviously I still need to measure the rider sag once I've geared up and got a hand from some friends.

Last edited by Bilga; February 26th, 2018 at 08:30 PM.
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February 27th, 2018, 07:45 AM   #13
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If I'm reading that correctly, you don't have enough static sag...you need MORE preload.
If it's got too much sag, (not enough preload) it'll definitely handle like crap.
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February 27th, 2018, 08:36 AM   #14
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Preloading stores energy in the spring. That energy will at rest push the bike up. By adding preload you reduce static sag. I think. This stuff always gets me confused.

Static sag is somewhat meaningless though; It’s active riding sag that’s important. Static sag is, ok, not strictly meaningless but only a secondary metric.

The manual recommends, what, 30mm? Try that!
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February 27th, 2018, 08:39 AM   #15
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Tourist is correct...the sag while on the bike is far more important.
Try around 95mm, then go more or less from there.
Good luck!
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February 27th, 2018, 08:52 AM   #16
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Originally Posted by RogerB39 View Post
If I'm reading that correctly, you don't have enough static sag...you need MORE preload.
If it's got too much sag, (not enough preload) it'll definitely handle like crap.
Ah yes, that makes more sense.

Tighten the spring so it doesn't sag as much.

It seems I've got a good 12-17mm of play to work with so I'm assuming this spring is going to be the correct weight for me.

This weekend I'll set my rider sag and let you all know how I go.

Cheers.

On another note,

What tire pressure are you running in the front and rear for enduro / trail riding.

The owner's manual says 15 psi front & rear but I've found that to be a bit hard (possibly because of my current shitty suspension set up) and have been running 13-14 front & 10-12 rear.
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February 28th, 2018, 04:19 PM   #17
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Bilga bro.
You need to be in the middle 50% of adjustment on your spring.
If you have to wind it up more than 75% of the adjustment then you need a heavier spring (like wise if you need to adjust the spring to under 25% of the available adjustment then you need a lighter spring).

As mentioned above..... rider sag is the important measurement to establish correct spring rate and all other settings follw on from there.
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March 1st, 2018, 10:33 PM   #18
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I've set my rider sag to 100mm.

The ass of the bike is now really high and the spring is preloaded a fair amount.

Does anyone know the cause of action from here?

Image is attached to this post.
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Rear slides all over the place-img_1862.jpg  
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March 1st, 2018, 11:48 PM   #19
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Suspension and Springs
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March 2nd, 2018, 02:16 AM   #20
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Originally Posted by Bilga View Post
I've set my rider sag to 100mm.

The ass of the bike is now really high and the spring is preloaded a fair amount.

Does anyone know the cause of action from here?

Image is attached to this post.
How does it feel to ride now?

These bikes have unusually long rear suspension travel, 335mm. A rule of thumb for rear race sag is around 1/3rd of travel - 111mm in this case. If it feels flighty then I'd consider dropping the rear down further. There are no hard and fast rules for sag! Just what works. (On my DRZ I've taken the race sag down to like 40% of travel. It's fine.)

How is the setup of the front forks in the clamps? High or low?
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