Worm drive for milling

[Timberframed]

Had the beam cutter. Got this last October. Rockwell 568 circa 1968. Bolted right up and means business. The only plastic on it are the brush caps.

 

[BobL]

Looks like fun. What's the RPMs ?

 

[Timberframed]

4400 rpm's which equates to a 1.25" driver spinning 28" of chain so 73.333 rps x 28" = 171.11 feet per second? Sorry BobL I know this stuff but I'm in my study and blowing the froth of of more than one. I'll get back at it tomorrow and use pi. Cheers

 

[Timberframed]

1.25" rim driver

 

[BobL]

I doubt the 4400 rpm is the chain rpm, more like the sprocket rpm.
If the diameter of the sprocket is 1.25" then that's 1440 fpm or 24 fps.
Compare that to 3/8" 7 pin of 1.45" @ 10,000 rpm = 63 fps.
It won't matter for narrow cuts but could come into play for thicker cuts.

 

[Timberframed]

electric motor rpm's as per label

 

[abbott295]

Have you made any provision for oiling the chain? I have been wanting something like this too. Also figured the chain speed would be slow.

 

[Timberframed]

It's just as fast as any other electric chainsaw I have for in the shop if not a tad faster. Manual oiling with spray lube.

 

[BobL]

Electric motors have a lot of torque at low rpm which is why they still cut pretty well. OTOH this means regular CS chaps won't work all that well.

 

[rarefish383]

I like that. It brings me back to the idea I have of mounting an electric motor to a drill press to plunge cut mortises. I make slab furniture where I have about a 3" mortise. A plunge cut on each end and connect the dots. Faster than a chisel, and straighter than a sawzall, Joe.

 

[olyman]

Had the beam cutter. Got this last October. Rockwell 568 circa 1968. Bolted right up and means business. The only plastic on it are the brush caps. View attachment 493636

now THAT, is thinking outside the box...cool. ive got a 10 Milwaukee non worm,,that I bet would work also...