VMAXX KNOCKING PROBLEM CURED

[colindetail]

Well, i'm chuffed with myself today. Sorted a problem that i fear a lot of you are suffering. Here we go.
If your Vmaxx kit is knocking at the rear then check this first. The top of the rear damper is just like a top mount on a coil-over setup. If it is loose at all it will kindly provide you with a free clunking, knocking noise when riding over bumps. I noticed mine only did it when the wheels became un-weighted as it were, it tended not to make noise when going over smoother undulations.
So, i spoke to Christian at RAD (very helpful) and then spoke to TPC (Vmaxx distributer) who were helpful and suggested tightening up the shock mounts when the wheels were on the ground (under load).
Whilst under there i noticed a small slotted area on the top of the piston (see pic).
This must be done up tight to remedy the problem. I just managed to do it with a 13mm (or 14mm cant remember) spanner whilst in situ.
It only needed half to three quarters of a turn and voila........ Knocking is gone.
I can't say that everyone's knocking noise will be this but it certainly cured my problem.
Hope this helps someone out there.

[torque777]

That's good info.. Fortunately mine seem quiet... How do you find out who imports vmax??

[Crowie]

mine knocks & now squeaks like i've got a bloody Guinea pig in the back. will give this a go at the weekend and see what happens.
thanks for the heads up.

[Bevsy]

Just ordered some today so will check this before fitting

[colindetail]

Just did a bit of internet digging and found TPC, The Performance Company were on facebook.

[Bigvw]

Yeah they're the importers for UK very decent folk to deal with!

[Lozcaddy]

ours are getting delivered today also, I will check this before install, wonder if they are loose from the factory or if it
is something that happens when they are on the van

[tramp]

thats good info thanks,

fitted mine last week and seem fine, but will keep this in mind if they ever do knock