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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
Contact Overland Solutions for all your custom modifications and setup for overland travel.

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  #1  
Old 24 Jul 2006
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Location: GENT Belgium
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Rear Spring rates

Can anyone tell me the standard compression rate of a standard 3AJ rear spring ? I'm looking to upgrade my original for overland purposes. Can you also recommend a spring rate if carrying a total weight of 200 kgs !!

Problem is, the aftermarket companies don't want to tell me as I'm not buying one of their shocks......

Salut Matt
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Old 26 Jul 2006
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Hi, I had a similar question on the HUBB for a while with no answers. The standard spring rate is 90nm and as you know is way to soft for carrying alot of luggage. I tried to find a firm to tell me for a given weight what spring I'd need but the same as you even so-called specialists just said "we sell a kit" meaning a standard road kit. I also tried to find a spring to fit to the original shock but failed to. In the end I was lucky enough to pick up an ohlins secondhand and had it rebuilt and also put a 105nm spring on. Also on the front end I put Hagon "progressive" springs in (which are'nt progressive) to stiffen the front a little. I must carry about 150 kg including myself but not including fuel, but the way it's worked out after Russia, the Stans, Iran, Pakistan and India is quite good.
With luggage the bike is ridable on any roads and considering I have a 45 litre tank and have filled it on a couple of occasions on bad road this is'nt bad.
When I have no luggage however the whole thing is far to hard.

Cheers Fish.
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Old 27 Jul 2006
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shocks

Thanks a million Fish, that's just the information needed....

I'll post my final solution...

Salut Matt
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Old 27 Jul 2006
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Hi again, please remember I did all this without having a great idea of what I was doing!

Cheers Fish.
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