Kibble

Can somebody explain why you can measure a difference in the height of the car after you've been running it for a few min. on new shock oils?I ve seen it go higher but I assume that this was from trapped air inside the shocks.
Thanks.

Stubbs

iTrader: (58)

Also because the oil has heated up a small amount from being run. Heating it up will lower the viscosity slightly, and change the damping characteristics. It will come back up higher when you push down on it to check ride height......

black blood

Use TLR shock oil.. one of the most stable shock oils on the market.

bash bros

iTrader: (2)

yeah, ok.....

Kibble

How does can lower viscosity change damping?

Thanks

Kibble

I mean in respect to ride height to that particular setup.

kaptain crash

iTrader: (46)

Your springs control your ride height. You can set your ride height without oil in the shocks. Preload can change that height. Pressure built up by warming of shock-oil will change your ride height. Different weight oil only changes how fast the shock piston travels.

wouterb

And how did you find this out / how was this tested?

I know the person who tested (laboratory tests) a lot of different brands of oil for TWF8 (unfortunately not online anymore ) and Losi at that time wasn't one of the better brands.

But perhaps it's better by now)

Gavel

iTrader: (6)

i thinks its just that alot of the pros use it, and they say they use it because they have found it the most consistant

wittyname

iTrader: (4)

Shock oil from any of the main players is good enough for most anyone here on this board. I can put losi , ae , mugen , serpent , or even turnigy oil in your shocks and your going to finish in the exact same spot as you would otherwise; as long as you think its the oil you like.

Zerodefect

There is absolutely a difference in oil brands. Some brands just plain don't work (Ofna), some brands accidentally put 50 in a bottle marked 20 (AE), and some brands can have weird oddites (Losi 25 being thinner than 22 in years past.)

I run PTRC.

The reason your ride height is off is because RC suspensions aren't on bearings or bushings. They're high friction nonsense plastic on hinge pins. The amount the suspension rebounds or compresses can mess up your ride ht settings.

Ever lift a dirty slash up and set it down gently and the suspension just sits there at full extention?

So make sure your shocks aren't too stiff. And make darn sure your pins and suspension is clean, reamed, and lubed.

Cars with suspensions that bind up or down are my pet peeve. If you set your car down gently and it doesn't sink down near ride height, or a car that doesn't rise back up to somewhat near ride ht, on it's own, has problems.

But if it's only a couple mm off, no sweat. Tune ride ht like a nitro engine, to performance, not to a ruler.