5 replies to this topic

[Geary Carrier]

Big block with a tiny twist.

2mm arm shaft.

Mo betta comm.

C-can brush hardware.

360 Mabuchi ceramics.

Ball bearings.

Probably a 26 wind with < 40 turns.

Should survive on the track or the strip, or not.

 

 

 

[Alchemist]

Gonna be a torque monster - that's for sure!

 

Will you need to modify the can in any way?

 

Can't wait to see progress photos Geary!

 

Ernie

[Geary Carrier]

Alchemist, on 30 Dec 2019 - 10:12 PM, said:

Gonna be a torque monster - that's for sure!

 

Will you need to modify the can in any way?

 

Can't wait to see progress photos Geary!

 

Ernie

 

Thank you Ernie,

 

The can will need the brass boss reamed out to 5mm to accept the ball bearing and the old magnet tabs will need to be flattened to fit the new ceramics.

That's probably it but ya neva know...

[Alchemist]

Hi Geary and a Happy New Year!

 

If I may ask you please, when reaming/drilling small metal parts, do you have device/fixture that will hold the part in place - or do you just hold it in your hand?

 

I'm trying to figure out how I can clamp small items in my vise without "squishing" the part out of shape, and to also hold it in place while drillilng.

 

I'm considering different durometer hardness of rubber;  the rubber pieces I have are too soft and the rotational torquing of the drill bit always causes it to pop out of the vise! 

 

Thank you.

 

Ernie

[Geary Carrier]

Alchemist, on 01 Jan 2020 - 6:26 PM, said:

Hi Geary and a Happy New Year!

 

If I may ask you please, when reaming/drilling small metal parts, do you have device/fixture that will hold the part in place - or do you just hold it in your hand?

 

I'm trying to figure out how I can clamp small items in my vise without "squishing" the part out of shape, and to also hold it in place while drillilng.

 

I'm considering different durometer hardness of rubber;  the rubber pieces I have are too soft and the rotational torquing of the drill bit always causes it to pop out of the vise! 

 

Thank you.

 

Ernie

 

Hey Ernie and a Happy New Year to you too...

 

Depends on the part geometry and what you're trying to do with it, but  typically on small or delicate parts I will build a metal clamping fixture to hold the part without distorting it and then put the clamping fixture into the machining vise.

 

g

[Dave Crevie]

Years ago when we were using Mura "C" and "D" cans I made aluminum slugs to fit snugly inside the can, originally to press

out the bushings without distorting the end of the can, but later found them to work really well for holding the can in a vise

without collapsing them for other work. If you have, or have access to, a lathe and a mill you can make slugs to fit the cans

you are now using. I'm surprised no one makes these, or at least no one I know about. Goat Boy used to make can straight-

ening slugs that might be used in this way, if you can find them.