Suspension sag!? - Kawasaki KLR 650 Forum
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post #1 of 5 Old 04-04-2014, 11:03 AM Thread Starter
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Join Date: Nov 2013
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Suspension sag!?

I've got 2009 and recently installed progressive 465 shock with rap. I't trying to adjust it to appropriate setting with all my gear on it, but having hard time figuring out what my ideal setting should be. I've been asking google and you tube as well, but couldn't find anything in detail that might help.
I'm 200lbs and I have 120lbs gear on me, total 320lbs. I'm doing mainly street riding, maybe some off road later.

I've done some measurement;
- when bike is lifted on center stand with rear tire in the air, I've measured from end of swing arm to my measure point up on frame - 23.1875"
- when i put the bike on the ground and sit on it with all my gear, it measures 19.875" with adjusting knob fully turned clockwise
- so difference is 3.3125. I think I read somewhere that it should be between 2.250-2.750"!? Is this correct?

Since I can't turn the knob anymore clockwise, should I adjust spring directly with mallet and screwdriver!?
Does anyone know right numbers I should be shooting for here, and what's the right action to take? If someone has experience with progressive with rap, that would be really helpful. I've send them email with these measurements but haven't heard from them yet.
I'm also curious how adjusting rebound settings can help and if I should change it. Right now it's set on 1.
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post #2 of 5 Old 04-04-2014, 11:59 AM
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A modest proposal: Contact Progressive Springs customer service and seek their counsel.

Otherwise, men say 1/3 travel under load is proper sag. Not familiar with the Progressive shock adjustment mechanism; used hammer and punch to adjust the stock shock on my Generation 1.
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post #3 of 5 Old 04-04-2014, 06:44 PM
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Quote:
Originally Posted by Renimus View Post
I've got 2009 and recently installed progressive 465 shock with rap. I't trying to adjust it to appropriate setting with all my gear on it, but having hard time figuring out what my ideal setting should be. I've been asking google and you tube as well, but couldn't find anything in detail that might help.
I'm 200lbs and I have 120lbs gear on me, total 320lbs. I'm doing mainly street riding, maybe some off road later.

I've done some measurement;
- when bike is lifted on center stand with rear tire in the air, I've measured from end of swing arm to my measure point up on frame - 23.1875"
- when i put the bike on the ground and sit on it with all my gear, it measures 19.875" with adjusting knob fully turned clockwise
- so difference is 3.3125. I think I read somewhere that it should be between 2.250-2.750"!? Is this correct?

Since I can't turn the knob anymore clockwise, should I adjust spring directly with mallet and screwdriver!?
Does anyone know right numbers I should be shooting for here, and what's the right action to take? If someone has experience with progressive with rap, that would be really helpful. I've send them email with these measurements but haven't heard from them yet.
I'm also curious how adjusting rebound settings can help and if I should change it. Right now it's set on 1.

Sag is set by adjusting the spring not the compression or rebound.The spring supports the weight of the bike.

Damocles is right Progressive should give you the sag measurement. Did you get the shock setup for the weight?

My .02, 120lbs of gear is way too much to hang off the back of a KLR!

No eye has seen, no ear has heard, no mind has conceived what God has prepared for those who love him. 1 Cor 2:9

Last edited by Spec; 04-04-2014 at 09:13 PM.
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post #4 of 5 Old 04-04-2014, 09:59 PM Thread Starter
1st Gear
 
Join Date: Nov 2013
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Progressive rep was not helpful with sag numbers for klr, but I found elsewhere that it should be between 2.00 - 2.50" or 25-33%. I've got mine to 2.60" with is just slightly over 33% and I also let some air out of both tires. Still some whole but runs much much better.
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post #5 of 5 Old 04-05-2014, 11:48 AM
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Renimus,
We do not know Which Brand or Model of tires you are running or What pressures you have in them.
But, I will suggest as my general rule of thumb, rider only Minimum 30F / 28R.
I always suggest 2psi more in the Front vs Rear, up to Max pressure.
Fully loaded, 36F / 34-36R. (check side-wall of your tires for MAX. press.)

Low tire pressures make a tire Flex more, therefore run HOTTER. Higher temps make tires more susceptible to catastrophic Blow-out.
Low pressures cause them to wear faster, cup or scallop on the Front tire, cupping leads to handlebar vibration, hand fatigue.

Any cupping/scalloping on your current F. tire, could aggravate your wobbles.

Good to hear you are getting shock spring pre-load issue straightened out.

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 85,000+ miles & counting
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