[Bella749]

Anyone with the DOS ride height tool, and xx9 bike with a "setup" chassis, perferably 749r or a flat-rate setup... I need free sag and rider sag measurments from the center of the axle to the top of the tool.

For example: free sag (L2) measurement 250mm, rider sag (L3) 240mm

I'm dealing with a non-standard setup and trying to verify my rear ride height numbers. My unladen measurement is too high, so trying to get some figures with rider on board.

Oh yeah, tire model or circumference would help, also

 

[tye1138]

1970mm circumference
250mm ride height (free) with 510mm swing arm length
140mm preload
254mm unloaded
246mm loaded (free)
228mm Rider


These are 16.5" dunlop tire settings.

On the 749R you wanna run roughly 140 - 145mm of preload (depending on the track situation)

When I get my modified DU3011 back and test it, I'll post some numbers on what works best.



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[Bella749]

Tye, how is the suspension loaded for those measurments? Swingarm unloaded, bike weight or rider weight?

Also, you sure on those tire measurements? Thay are coming out to 627mm and 611mm diameter; A BT003RS (180/55) is 2040mm circumference, or 650mm diameter.

With the DU301 Chandler shock I'm getting 272mm unloaded, and ~255mm witht he bike's weight. That's with the axle at 507mm; a little high compared to 253mm unloaded DOS gives as a baseline. I don't know if Jaso'n's figure was for the progressive link, or not, so I'm trying to get a feel for some laden sag numbers for the flat link with his tool.

 

[tye1138]

Refresh it, I fixed the posting...



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