Cutting and drilling a Hyper 7 chassis.
 

Hey guys,

just looking for a few tips on cutting my chassis,
as most of you guys probably already know the chassis is 7075 aluminium

i am intending on cutting another hole for my spur gear, as in flipping my centre differential around,
as this will give me two possible places to mount my motor (behind the servo or next to it)
I have access to a pillar drill and dremmel but no milling equipment, i am intending it to look good, or at least neat :P

if you dont really get what i am trying to do just say so, i re read that and i cant even understand it :S

If your intent on making a slot in the chassis, drill the inside perimitter of the hole with a 1/8" drill bit till the chunk falls out and finish with a metal file. Shouldn't take but 15-20 miutes and a couple beers.

Scribe your lines on it with a utility knife, then use your dremel to cut as close to the lines as you can. Then use a fine file to finish the slot. You can also just use a drill for the extreme ends of the slot (use a drill the same dia as the slot is going to be).

I use these wheels on my dremel - works much better than the standard ones. http://www.amazon.com/Dremel-EZ456-2...3344771&sr=1-4
They also come in a kit
http://www.amazon.com/Dremel-EZ406-C...3344771&sr=1-7

Those are the ones I've used to cut aluminum. I have also found the version for plastic works well on thick lexan bodies.

:surprised: That's almost $2 a wheel!!! Do they work that much better?? I know I hate changing wheels, so the convenience is definitely a plus.

In a nut shell - yes. I used to go through 2 or 3 wheels per cut job. Now I change wheels about every 4th or 5th job.

However you do it make sure that you drill a hole in the corners. 90 degree corners are weak spots asking for problems, plus the radiused corners look better. It's not a big area that needs to be removed so if it was me I would drill two holes, one at each end of the slot, pick a bit that is slightly wider than the spur gear and then use a dremel to remove the material between the holes

sweet, thanks:yes:

+1. That's exactly what I would do...

cool cheers guys :)

now i have another question... when converting to electric do any of you fill in the nasty nitro holes (flywheel/engine mounts?)

if so... with what?

I have never seen the holes filled...........

ahh ok, i just thought it would probably look alot better , i guess i will see next week, when all my parts are supposed to be arriving :)

I use these wheels on my dremel - works much better than the standard ones. http://www.amazon.com/Dremel-EZ456-2...3344771&sr=1-4
They also come in a kit
http://www.amazon.com/Dremel-EZ406-C...3344771&sr=1-7[/QUOTE]

Are these better than the fiberglass reinforced ones?

I'm not certain which ones you are referring to? I've only used the ones I linked to and the standard little brown ones that come with most dremels.

I was referring to the ones that are about 2" round, they are brown, but they have a fiberglass webbing on them.