Not 3.5” of sag though. That’s way to much.
Sincere questions... hope you can take a moment with me here...
How/where are you measuring this?
At the location that you are measuring this... what is the full travel from fully compressed to fully extended (just before you lift the track off the ground)?
Im sure you already know this...
Some sag is ideal/optimal in skid setup... there does exist a 'too much' or 'too little' point however.
Here's some other stuff to ponder.... my OPINION.
One other thing that really gets neglected is lubrication on the skid... probably ever other ride and with SPECIFIC grease that is not very viscous and does not thicken at the temps you ride....... Plus you need to pull, disassemble and clean your skid from time. Often that in itself will eliminate stiction and improve situations with too much sag.
Plain and simple, a skid that is not lubed, and with the correct grease, will not only wear out sooner... but will not perform up to par.
One of the nice things in the Doo skid that is much nicer than the Poo skid... The Doo actually has bushings on the pivot shafts... the Poo does not.
With lots of hard miles on a sled... and with how important it is to proper sled function... should be part of your summer P.M. in addition to shock service on the sled... IMO.
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