Gas shocks

[Lizardracing]

also , N2 greatly extends the life of rubber based seals , just like with tires , when I started using N2 in my motorcycle tires , they last nearly twice as long , as finicky as these shocks are , I would be afraid of any moister getting in them ....jmo....

Very interesting. I hadn't consider that a possibility other than thinking about the molecule size comparison for leakage. I assumed, perhaps wrongly, the shock glands were chemical resistant like Viton or something similar.
In any case, I wasn't attempting to be comprehensive or anything, it's just a rabbit hole I got into. Our season has begun over a month ago and we have had 5 rain outs so I'm just keeping my mind busy. I'm not a very good driver but I do like the shop time....I can build anything but a trophy shelf lol.

[Jking24]

I did read that on the nets but I didn't know anyone I trusted in that sport so I didn't explore that direction. It's very interesting in any case. Are those kind of shocks just air springs or are they oil filled as well?

I honestly don't know anything about the bicycle stuff I think it's just a air spring. In my opinion on extra shop time besides the obvious things like servicing birdcage and other maintenence items these days should be spent on the smasher playing with different combos and plotting their numbers for comparison. The better educated and informed you are about those things the better your at the track adjustments are. Just like playing on the scales in years past you can look at dynamic wedge and things

[Lizardracing]

I would agree to that races are won in the shop...
I actually have a USMTS/USRA modified and so with one spring per corner and shock limits we don't get to play with that kinda stuff too much. With a stock type front end, the front ends of these things are very sensitive so most of the technology is hiding in there as well as tires and chemical prepping. Oops, I didn't mean to say that.

[fastford]

also nitrogen does not change pressure with temp like air , this could be the main reason to use it...jmo