Ok, I came across TippyR and am curious about the air spring route that he took. I tried the search and it won't take "air" Apparently there is a short word filter on the search. And after 4 hours of sifting through posts with "spring", "tippyr"...I'm posting...

Anyways, anyone have any links on air springs? I came across

http://www.goodyearindustrialproducts.com/airsprings/engineering.html

in specific, the 1R14-019 springs look interesting ~15" travel.

Thanks for any help

Jason