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these already exist, probably save ya some time and headache

http://cgi.ebay.com/kyosho-ultima-pro-alloy-radio-plate-/140343238622?cmd=ViewItem&pt=Radio_Control_Vehicles&hash=item20ad1bdfde

http://cgi.ebay.com/kyosho-turbo-ultima-ultima-alloy-radio-plate-new-/130335686672?cmd=ViewItem&pt=Radio_Control_Vehicles&hash=item1e589cc010

i have been looking at them for a while but the chassis i got is 5/8 ths longer than the the the pro so custom it is

Paul

maybe you coluld use the proxl style ones

bdrmbully wrote:maybe you coluld use the proxl style ones

i didnt think that would fit either

the chassis may be longer but the front screw holes still gotta line up to use these...
http://cgi.ebay.com/VINTAGE-UM-45-KYOSHO-ULTIMA-PRO-XL-UPPER-PLATE-SET-F-R-/180501940342?cmd=ViewItem&pt=Radio_Control_Parts_Accessories&hash=item2a06c10876

With the alloy chassis and its seven battery slots... I think a one-piece topdeck is highly recommended

i gotta agree with that haha, that thing is gonna bend like a pancake with a heavy load under a big jump, you get a lot of "rebound" off jumps when its too flexible. i used to see it to a lesser extent with associated stock carbon fiber chassis's, but aftermarket fiberglass/graphite ones were a LOT stiffer...

the stock traxxas TRX1 chassis is the most solid peice of fiberglass i have ever felt.

I'm still impressed with the old losi chassis, even though the center layer is just epoxy, those oldies are as stiff as my MX-4's full woven carbon chassis

well im thinking of having a couple of bends put in it before i get it coated . i picked up the diy top plate today from the home depot 8 bucks its an 1/8 "thick so i will be working a lot of material out of it to lighten it considerably

Paul

well i got my red ultima chassis back today cant wait to get some new screws

sweet!! I'll be watching this thread.looking good bro!!

so i decided to go with the black nip ultima arms and it will be a hand full with seven cells so a nice thick cf top should stiffen it up

i went with a zx5 steering will probably use a high torque 1/16 scale steering servo

good choice with the arm. the hot trick arms have a lot of slop .