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That's coming along very nicely, very clean build! Looking forward to updates!

FasterLouder wrote:Wow,they have a lot of Triumph parts on 'em,don't they?
Nice job,once again,Asso Man!

? The only common plastic parts I can think of are the ballcups and rear axle carriers. Which other parts do you refer to?

At a glance,front upper chassis,rear arms with heim joints for adjustable toe in,front arms,rear carriers,front uprights and steering knuckles and the front bulkhead...I'd have to do a comparison bewteen the two manuals,but I think I got 'em all?

Front bulkhead is different between the two. The rear arms on the Ultima Pro use turnbuckles to adjust rear toe whereas the Triumph uses 4 pre-set holes in the arms that are specifically offset to ensure toe is the same from one side to the other. The front arms are different too. Rear hubs, front knuckles and carriers are the same though.

Thanks for the help Adam, and to complete: the front brace is different also: much narrower at the bulkhead for the triumph. And you're both right on the front steering knuckles.
Fron uprights... I'm not sure if they both have 2 lower locations for the hinge pin.
I think only the triumph has 2.

Very nice, I had a friend that raced one locally here back in the day and was competitive with the few JRX2's and frontal assault of a gazillion RC10's.

Recently I found an option part ，ultima pro xl carbon chassis。a super rare item I never seen。in pro xl option part list that part number is UMW-2 carbon chassis ，very lucky！！