T-maxx Custom Truggy Chassis

I'm going to be making my own truggy chassis for my T-maxx and would like to know if you guys have any input on which would be a preferred metal for this job. I plan on cutting the chassis much like a hellfire's chassis. 18" long with attached skids and 8" that narrows to 6" or so wide.

7475-O at .25" (6.35mm)
6061 at .125" (3.175mm), .16"(4.064mm) , .1875"(4.7625mm) and also .25"(6.35mm)
7075 at .25"(6.35mm)

Please help me on this... i'm stumped on which metal to choose from! Thank you!

[BrianG]

6061 will be pretty easy to work with and fairly cheap. For a chassis, I'd go with the 0.16" max thickness. 1/4" is just crazy!

7075 will be harder to work with, and you won't need 1/4" - I'd say 0.125" (3.175mm).

Not sure about 7475-O

I assume the 6061 and 7075 are T6?

[What's_nitro?]

I would go with the 0.125" inch 7075. That alloy is MUCH stronger than 6061 so it kinda makes up for being harder to cut.

[mothman]

I would say go with 7075-T6. 7075-0 is soft like a butter. The "T6" indicates that it has been heat treated- meaning that its much harder and stronger. about the thickness, .125" should be good enough since that is what other major buggies and truggies are using.
Plus 7075-t6 is about twice stronger than 6061-T6.

Yes the 7075 and 6061 are T6

[What's_nitro?]

If you want it to be REALLY tough, get some 3mm 7075-T6. 3mm is a bit thicker than 0.125".

[mothman]

Originally Posted by What's_nitro?

If you want it to be REALLY tough, get some 3mm 7075-T6. 3mm is a bit thicker than 0.125".

I think .125 is a bit thicker than 3mm. .125"=3.175mm

[What's_nitro?]

Originally Posted by mothman

I think .125 is a bit thicker than 3mm. .125"=3.175mm

I meant to say 4mm. My bad...

Alright guys i found some 7075-T6 that is .125" thick and 24" x 12". And plan on working with that.

Another question i have is what center diff and spur should i go with if i plan on keeping maxx diffs? i think i plan on putting an axial .28 RR in the bad boy.

Thanks guys!

[suicideneil]

Given the lack of additional gear reduction from a tranny, you will need a fairly large spur and small pinion (any 6 spider center diff will be great).

Based on some rough mathes, a normal emaxx geared for 40mph uses 62/24 + the tranny; with just a center diff and the motor pinion, 52/12 gives about the same result. I would suggest using the calcultor to play aropund with your gearing options based on what a normal t-maxx would need to be geared at to achieve a certain speed....

http://www.scriptasylum.com/rc_speed/_top_speed.html

Alright thank you. Do you know of any place i can buy the entire center diff an brake set already together other than ebay? Thanks.

[brushlessboy16]

i dont think you can find them as a package. i have a center diff that i want to put into a maxx, so ill be watching :D

Alright for a diff i plan on using a Hot Bodies Hardened Center Diff 50t
I'm going to cut a piece of left of 1/8" aluminum and the T-maxx tranny case to make a diff mount and top plate. And use the T-maxx Brake setup.
But my question is, which brake hex will fit around the Hotbodies diff output cup?
A or B?

[_paralyzed_]

the answer- C. A hot bodies brake, it will fit in the maxx pads fine.