Small bargin and a request for help

ratchet -

Why not put a 3 phase motor on it and run through an inverter, then you can choose the speed that you want. Small inverters are very cheap even on eBay !

AWEM

That would be 1425 / 30 = 47.5. Nothing that makes sense in a single stage. But if you want, the pulley's diameter should have a relation of

Nick

(Driver / Driven) x input speed = output speed, with the driver & driven being the diameter of the pulleys (or number of teeth on gears). I'm too hot & bothered to work all the options out, but you might need a compound intermediate to slow it down enough.

Peter

Does anyone

I just put one on ebay

Progress No1 pillar drill Item number: 120010848031

if you have a drill press like this ..hope these pics are of use

ed, could you post a pic of the hacksaw? i would be very interested t

see it,,thanks.

bil

-- blueswar

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Cheers for all the replies!

Andrew: I gave away all my little 3phase motors to people on here/homeworkshop. Doh!

Nick & Peter: thanks, I need to get my thinking-brain out of the cupboard and do some maths.

Mark: that's the very thing! Ace pics, thank you. I shall be zooming in on them!

Bill: have a look at

There is a 300mm ruler for scale > ed, could you post a pic of the hacksaw? i would be very interested to

Ed,

The Hand drill looks familiar, I have a very similar one, I did wonder if it was some sort of tapping machine. When I get chance I will take a picture for you.

Dave P

I know this thread's a bit old now, but I just noticed it and thought I'd reply.

To me 30 strokes a minute sounds rather slow for a small machine like this. My big Q & S power hacksaw has two speeds: 100 and 150 strokes per minute, and it takes 16 inch blades. What makes your machine seem like it's running way too fast?

Chris

Yes, I tend to agree with that comment. I've done over 600 transactions on ebay (mostly as a buyer) and the vast majority have worked out smoothly and been satisfactory. I can only bring one to mind that was a problem. I think that the great thing about eBay is that you can find things that otherwise would be too obscure to locate, particularly bits of old machine tools. I have also met a considerable number of the 'other side' to the transaction, and without exception the ones I have met have been decent folk.

AWEM

Well, the 'dread' bit was a bit of a throw-away line really, although I have seen & heard some odd & downright nasty things about ebay. Probably a function of too many people and a lot of profit chasing, from the owners and some sellers.

Chris, I thought the recommended speed for cutting with a hack-saw was

I rigged it (the small saw) up to test with a 1425rpm motor, so it was running in the hundreds of strokes per minute, just far too fast for such a tiny blade.

I'm in the process of acquiring a car wind-screen wiper motor, which will run much slower & be much smaller. I'll see if I can get that to run the saw at 150rpm with out a counter shaft.

Cheers all,

Ed

Nospam wrote:

I searched online and found mention of a Gingery hacksaw which runs at

Best wishes,

Chris

Oh, and let us know how it goes!

Chris