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Old 03-20-2012, 04:03 PM   #61
crankshaft
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Originally Posted by SFKLR View Post
Hey, incidentally, everyone talks about 8mm of pre-load. How does one measure that? Do you compress the rear spring 8mm from the collar, or do you raise the back of the bike 8mm from the axle? Vast difference between the two.

PS, Crankshaft: bare arms in Vermont in March? You using a chest-mounted Go-Pro?
Yes sir, bare arms.... it was 75 here today I made a chest mount and I need to get the initial angle set up correctly, so you're not saring at the triple clamp. The riding area is rough as hell for some reason, which didn't help matters. I was there two weeks ago and it looked like this.....


To get the 8mm, I threaded the ring down until it made contact and then made a line on the threads with a sharpie and rotated the ring down until I was 8 mm below the line. A vernier caliper works well for this.
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Old 03-20-2012, 04:04 PM   #62
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Can the spring be taken off the top, leaving the bottom fastened?
Spring drops from the bottom actually.
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Old 03-21-2012, 09:04 AM   #63
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So I changed my rear spring last night from a 130 to a 140. With the 130 I had 5mm of pre-load and on the 140 I put 8mm of pre-load. Here is the crazy part, my sag numbers are softer for both static and race sag with the 140 spring even with more pre-load. For the record these are both OEM KTM springs with 215mm in length. WTF!!! No wonder there are no consistent sag numbers!!!
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Old 03-21-2012, 10:29 AM   #64
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Originally Posted by bruceca2002 View Post
So I changed my rear spring last night from a 130 to a 140. With the 130 I had 5mm of pre-load and on the 140 I put 8mm of pre-load. Here is the crazy part, my sag numbers are softer for both static and race sag with the 140 spring even with more pre-load. For the record these are both OEM KTM springs with 215mm in length. WTF!!! No wonder there are no consistent sag numbers!!!
That is crazy to say the least.
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Old 03-21-2012, 12:47 PM   #65
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Yep. Kinda nukes any effort to apply "theory" to the issue, doesn't it?

I hate stuff like this.

S
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Old 03-21-2012, 01:53 PM   #66
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There is no other explanation than a mistake on the spring stifness from KTM. Lets leave that behind and go on!
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Old 03-21-2012, 03:38 PM   #67
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Quote:
Originally Posted by bruceca2002 View Post
So I changed my rear spring last night from a 130 to a 140. With the 130 I had 5mm of pre-load and on the 140 I put 8mm of pre-load. Here is the crazy part, my sag numbers are softer for both static and race sag with the 140 spring even with more pre-load. For the record these are both OEM KTM springs with 215mm in length. WTF!!! No wonder there are no consistent sag numbers!!!

Poor control of spring rates at the OEM sounds likely by what I've seen in this thread alone!
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Old 03-21-2012, 08:48 PM   #68
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Anyone know if a 150X225mm spring off an 950 Adventure will fit a Super Enduro?
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Old 03-21-2012, 09:37 PM   #69
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Anyone know if a 150X225mm spring off an 950 Adventure will fit a Super Enduro?
SuperPlush has the 150 that fits the SE..

It will fit but I would not recommend it.. The SE spring has a 59mm inner diameter the ADV is 63mm, lots of play. It does not load the collars correctly..

As for the discrepancy in spring preload I have found that a new spring takes less preload than one with some miles on it..
I am 240 in gear and am running a 150 rear and 64's in the front... 76mm basically 3in race sag is where this thing is happy..
My first stock 140 started right at 215 and when removed it was 205mm.. Same deal with the front end kept dropping, I kept adding preload untill I was up to 35mm and replaced the springs.. From what I have seen springs do wear and get shorter, especially with this much weight on them ..IMO
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Old 03-21-2012, 10:01 PM   #70
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[QUOTE=Navin;18262923]
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Navin,
Been following this thread. I too experienced the exact same sag and stiff ride with the stock setup. I'm 6'3", 195lbs. " quote

We are close in weight so I guess you can compare directly with my 12 kg measurments, (maybe???). If a 12kg directly equals a 120 I don't know, probably close enough but I hope Trailtricks or Superplush chimes in on that. Kennyd gave me some of his numbers too, sounds like you get alot of resistance till you just drop off down around the 11.2 iirc???

I can't give any real impressions of the Trailtrick 12kg spring as my shock is FUBAR again. I know my sag was getting closer but I doubt it was enough. Like others I was only using full travel under huge hits, like dropping 15' off a downhill double and clipping the landing. I think I could have gone lighter than the 12 but Javier though I'd be getting what I want from it. Till I get a real ride on it with the shock working I won't know for sure.
i THINK YOU NEED THE MAKE SURE THE SHOCK IS VACUUM BLEED FROM THE TUNNER SO IS NO AIR TRAP,PUT 8MM O PRELOAD IN THAT 12KG ,CHECK RIDER SAG ,RIDE IT AND RECHECK THE SAG AFTER COUPLE O RIDES.
I RUN A 12KG BEFORE AND WAS A LITTLE SOFT FOR MY 225 LBS GEAR UP,LIKE BETTER THE12-15 THE I HAVE ON IT NOW .
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Old 03-23-2012, 05:16 PM   #71
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Got my shock back today, hopefully it won't fail again till I at least get a feel for the 12kg spring!
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Old 06-05-2012, 08:38 AM   #72
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I've only gotten a few short rides and one lap of racing on it but it works well, no complaints yet. I haven't even started spinning adjusters, too little time right now, but it was tracking straight with good feel at race speeds in sand whoops and has been on rocky trails with good feel again. Some small jumps got the ends compressed and they both took the hits without complaint or bottoming.

I need more time on it but it looks to be good, far better than it was!
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Old 08-10-2012, 02:31 PM   #73
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The 640 Rear spring and shock look very similar to the SE.

Anyone know what the spring rate is on the 640 ? That may be a solutions to a hard rear end.
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Old 08-10-2012, 03:14 PM   #74
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Forget that.. the 640 ADV is 70 / 260 as opposed to 140/215 on the SE.

But in laymans terms.. whats the difference ?

Anyone ?
Quote:
Originally Posted by Hodgo View Post
The 640 Rear spring and shock look very similar to the SE.

Anyone know what the spring rate is on the 640 ? That may be a solutions to a hard rear end.
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Old 08-10-2012, 04:03 PM   #75
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The diameter is 59mm and they look very similar in size.

Quote:
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Thanks Hodgo. If the units are the same, the 640 has a really skinny-tall spring. I'm guessing they are different scales.

Need the 59mm diameter, 215mm length (though I'd bet a 245 length would fit without trouble--and give me the ride height I want WITH some pre-load).

I guess I'll post a wanted ad in the Flea Market and in the link stuck to the top of the Orange Crush page.
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