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Post by pmatulew on Jul 17, 2013 16:50:25 GMT -5
Is it just me, or is there no way to adjust the rear spring pre-load on a generic GY6 150 without removing the airbox?
Seems overly complicated if for instance you travel out light with the intention of travelling back heavy. How would you do the adjustment in the field?
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Sophomore Rider
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Post by gitsum on Jul 17, 2013 17:14:32 GMT -5
I modified the airbox fasteners just for that reason on my Tomos Nitro 150 (made by SYM).
There were two brackets and a total of three bolts that had to be removed to get clearance to adjust the rear shock on that side.
I fabricated a a single bracket and then put a bolt from the rear with a wing nut facing the outside. Now I can quickly loosen the wing nut and slide the bolt out of the hole in the airbox to pivot the airbox up and out if a shock adjustment is needed.
The airbox is still supported at two points and still in the stock position.
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Post by jeepsteve92xj on Jul 17, 2013 21:40:56 GMT -5
on my Znen I took each shock off and held in the bench vice to have leverage.
I had the seat bucket out to mess with the carb anyhow.
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Post by shalomrider on Jul 18, 2013 0:46:52 GMT -5
howdy, all the ones i've had were knuckle skinners. it does make it easier in center stand with the shock extended as far as possible. on one i hadi could use a screwdriver forced in the notch and wedged against the extruded part. on another i could grab the collar with my hand and turn it. on the piaggios there is a supplied spanner but even that is difficult to position where you get enough movement to change the preload. one could try the filter strap wrench wrapped around the collar.
lotsa miles and smiles to ya
ken
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Post by rockynv on Jul 18, 2013 20:20:50 GMT -5
Haven't had any trouble either on my Lance (Znen) or Piaggio. Most times you just have to get down at the right level to be able to see the adjuster clearly and of course make sure it is clean before you try to adjust it. If it is packed with road dirt it is not going to turn very easily with or without the spanner. After I clean the adjuster I find a dry silicone spray lube helps and if really stubborn from lack of use PB makes a garage door track lube that you can get at Home Depot that works very well on the preload collar.
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