XRAY - Model racing cars

Hi guys,

I was wondering if anyone had been playing around with the conical shock pistons in the kit. Under what kind of circumstances would you be using them, and in what direction (cone up, or down). On what kind of track / driver style? I'm a bit reluctant about trying them as I find the suspension to be satisfying already and changing pistons on the track is not so great

On a more general shock piston subject, what are the benefits of changing the piston opening diameter, compared to just changing the oil thickness? For example, why would you run, say, 35wt with 2x1.3, instead of 60wt with 2x1.5 holes?

Thx,
Fabrice

i run the 1.5 conicals in f&r . the cone goes down(large part) we have some woops and jumps and it seems to handle great. 35wt in rear and 50wt in front. its almost the same as the straits but w/ the conicals they have a faster return. so in the rough parts IMO it handles better.

Of course it depends on the track
on a reasonably bumpy track with a few jumps i have been running 1.5 straight pistons in the front with 40wt oil and 1.5 conical pistons (with the larger hole at the top) in the rear with 40wt oil
On a reasonably flat track i have been running 1.5 straight pistons in front and rear with 50wt oil in the rear and 60wt oil in the front

I would have to say that on a bumpy track with or without jumps the conical pistons in the rear definately improved the handling,as the upstroke is quicker but has more pack which stops it from bottoming out and the downstroke is slower to stop the rear from lifting which seems to settle the car quicker over the bumps and ruts (on the bench it feels way to soft but on the track its awesome )

I always tend to run the front stiffer than the rear by using stiffer springs or using the straight pistons,this seems to take a bit of the steering snap away and also seems to be more precise into a corner and stops the front from squating in the corner

The answer to the hole diameters is that the larger the hole the quicker the oil passes through the holes which i feel makes the car more consistent,especially over the bumps and ruts

On the bench the 1.3 with 35wt wont feel much different to 1.5 with 60wt,its when on the track you feel the difference (as explained above)

Hope this helps

i do and its the only way to go IMHO! it works great on bumpy tracks. i like the fast rebound .......just try it.

I also would like your setup sheet ryan.
Here is a pic of the track I run at bumpy and big jumps

Z, you're confusing me

I though that the conical pistons (cone/big hole UP) would cause MORE damping (slower) on rebound (and less on compression)

That's also what the XB8 manual says.

I though this would be good because you have 'softer' compression, giving good shock absorption, less jumpy car, and at the same time 'harder' rebound, preventing the wheels enter holes (the car 'flies' over the holes).

Did I get that wrong?