Monster GT Conversion With A Center Diff

[Chadworkz]

Very nice!!!

[Chadworkz]

I have TIG welded 7075-T6 successfully on many different occasions, both thin and thick gauge, it just takes some time, practice, and getting used to. 7075 doesn't pool (puddle) like 6061 or other similar aluminum alloys (like 4042, 4052, 5052, etc.), and you can't stop & start. You have to start and then weld continuously for the entire seam/joint you are working on. If you stop, it can make it very difficult to start a new pool (start welding again) where you stopped, because the heat hardens the aluminum, raising the melting point of the aluminum right where you stopped, while remaining low just a couple inches away. If you do have to stop, it's best to start again from the other end, welding back toward where you stopped.

[Krawlin]

Thanks for the info redshift and Chadworkz. I will probably end up going with 6061-T6 anyway though to be honest, McMaster has a bigger selection of sizes in the 6061 grade.

[The Dude]

I must finish it for this week end... for a show here

for the drive shaft, my friend made it

I gonna try in 16/42 .... ( what do you think about ??)

[JThiessen]

Originally Posted by Chadworkz

I have TIG welded 7075-T6 successfully on many different occasions, both thin and thick gauge, it just takes some time, practice, and getting used to. 7075 doesn't pool (puddle) like 6061 or other similar aluminum alloys (like 4042, 4052, 5052, etc.), and you can't stop & start. You have to start and then weld continuously for the entire seam/joint you are working on. If you stop, it can make it very difficult to start a new pool (start welding again) where you stopped, because the heat hardens the aluminum, raising the melting point of the aluminum right where you stopped, while remaining low just a couple inches away. If you do have to stop, it's best to start again from the other end, welding back toward where you stopped.

You can get 7075 to stick together, and make the welds "look" good, but you have all the structural strength of a piece of plastic - may as well use double backed tape. I've torn off 70 series weldments with a prybar that looked perfect.

[Kcaz25]

42? WOW I didn't know they made them that small? Where can I find one? Looks great of course! 42/16 seems MIGHTY fast to me!

Krawlin, sounds good!

[The Dude]

It's a X-Ray center diff

ok I gonna put a 13T pinion.... Thanks

[Krawlin]

Even 13/42 is going to be really high for the MGT. It's diff's use a typical buggy ring/pinion tooth count as far as I know, its pretty high up there, like 43/13 for the ring and pinion. I run 9/51 and 10/51 for my pinion/spur gears, anything more and it's too fast for my tastes. I made a video of it with 13/51, and it flies, so unless you have a lower Kv motor than mine (I have a 1550Kv on 6S), you are going to be hitting some really high speeds.

That looks awesome though man, really nice setup. But we need more pictures!!!

[The Dude]

I've got a 1800Kv motor..... I'm trying to find a 48T spur gear... and a 10T pinion. I gonna adjust with the test...

Originally Posted by Krawlin

That looks awesome though man, really nice setup. But we need more pictures!!!

just some pics of this afternoon



















this is not the definitive screw....
missing the lipo but I'm waiting for the postman ...

but and your truck ??? where's the pics ???

[Krawlin]

I keep forgetting. Once my batteries are charged I will get some pictures, I think...

[The Dude]

Originally Posted by Krawlin

That looks awesome though man, really nice setup. But we need more pictures!!!

more pics !!!!!

[Chadworkz]

May I ask if you are a certified welder, or just someone who welds on occasion?

[JThiessen]

Originally Posted by Chadworkz

May I ask if you are a certified welder, or just someone who welds on occasion?

Formerly, now I do the design and inspection.

ps. It has nothing to do with your abilities - just like welding steel to aluminum. Once 70 series is heated to the molten point, it loses its chemical structure, and does not come back.

[suicideneil]

Beautiful, thats an emaxx killer if ever I saw one

[rawfuls]

The Dude-

Dang, that's a nice ride!
That'd poop all over my EMaxx..