how to or what to.....grind down rear bully to make lighter

[lil' lucifer]

hey guys.
kinda want to put my rear cast axle on a diet. I have seen a few post but I know am missing some.

I've drilled out my gears already. And I'm about to lighten the axle tubes. But u guys got any pics of what is okay to grind out or off the cast case?

"thumbsup"

links, pics anything would be great!

 

[yjdavid]

have you seen the upcoming delrin rear tubes? those could save a lot of work!

 

[lil' lucifer]

have you seen the upcoming delrin rear tubes? those could save a lot of work!

decided not to go that way. thx tho.

 

[lil' lucifer]

no one eh!
found this one but would like some more ideas
http://www.rccrawler.com/forum/showthread.php?t=238554&page=2

 

[Rocks R. Good]

so i have read ur build tons of times but i still can really figure out how you use ur drill press as a lathe?

i have all the tool u need but not sure how u did it

tyler

I drilled the tubes out to 5/16", When I was almost done drilling out the last bit I let the drill bit get hung up inside the tube. Basically The length of the tubes and the soft aluminumn provide enough friction that even when it's drilled out the bit still hangs up inside the tube. Once the tube is stuck on the drill bit you can use it like a lathe.

I used a really rough file to knock it down, and then 60 grit sand paper wraped around it to smooth it down and clean it up.

It is a really slow process that I spent hours on. You really need to take your time with it, and don't put to much pressure on it or you will fry the bearings in your drill press.

I hope that helps"thumbsup" I'll try to get some pictures of the case mods posted for you.

 

[Failedabortion]

Might be able to use allthread with a nut on each end and throw it in the drill press? Maybe drill a hole in some plate, clamp it to the table and run the allthread through it to take some load off the drill bearings?

 

[Kraqa]

too much work for me.

 

[Failedabortion]

too much work for me.

Could always spend hours with the dremel instead...

 

[Kraqa]

i just meant that the aluminum housings are alot easier.

 

[Lextronix]

^ I agree with Kraqa. The work isn't worth the gain in this case. Delrin or aluminum tubes are the ideal choice. If you want a light weight rear end then start with the right components rather trying to imitate them.


I have bored out my aluminum rear axle tubes, and the change in weight bias is minuscule.


53 Willy's bully thread has an excellent example of axles that have been shaved for clearance and weight reduction.


-Lex

 

[lil' lucifer]

well i'm a cheap fawk and like to build shit myself. I get bored waiting for parts to get here so I try my best to build them myself.