FWD to list with edits
EW
----- Original Message -----
From: "Ed Weldon" <23.weldon@comcast.net>
To: "Benn" <karhu@california.com>; <land-speed@autox.team.net>
Sent: Monday, April 28, 2008 10:37 AM
Subject: Re: [Land-speed] cutting/grinding tools?
> Benn -- I don't know how much cobbling up you're willing to do, but here's
> some thoughts in that particular direction:
> I have this $20 Horror Fright 4-1/2" angle grinder. Looking at it I see a
> fairly compact angle head with a stubby maybe 5/8" long 5/8" coarse thread
> spindle. There's a steel spanner nut with a flange 1-5/8" dia x 1/4"
thick.
> In the nut flange there are 4 - 5mm holes on a 30mm circle. Now I go look
> at an ordinary 1/2" jacobs chuck with a JT33 taper and note that it's
close
> to 5/8" dia at the near end of the hole and that the flat back of the
chuck
> body cuts pretty easily with a file.
> Now this thing works pretty well; so I'm not anxious to take it apart
before
> the 12000 rpm brush motor starts smoking. (even if that happens soon the
> thing will have paid for itself). But I'm willing to bet that inside
where
> those 4 little phillips screws hold it together I'll find a male spline
end
> on the motor shaft and a female spline socket in either a stub shaft or
the
> extended hub of a gear.
> The next thought is that heavy duty flexible shafts are pretty readily
> available to allow you to get the bulky motor away from the work area.
> Then you'll want to look at ways to get whatever remote motor have to
speed
> down and maybe make it variable. Lots of possibilities come to mind here
> since that part can sit on a little roll-around thingie or a base with a
> good carrying handle. How about the head off a cheap drill press? Or
maybe
> your shop 1/2" hand drill with a setup to strap it down and a gadget to
hold
> the speed setting on the trigger or a separate variable speed controller.
A
> small 12 volt starter mounted to a variable speed cone pulley setup. (nice
> and compact) Put a 12 volt battery and your quick charger out of the way
> somewhere away from sparks and use your welding cables to make the
> electrical hookup.
> Ed Weldon
>
> ----- Original Message -----
> From: "Benn" <karhu@california.com>
> To: <land-speed@autox.team.net>
> Sent: Monday, April 28, 2008 9:33 AM
> Subject: [Land-speed] cutting/grinding tools?
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