Advice needed on Rapidor Saw

mike.crossfield · 2005-01-09T16:44:15+00:00

Thanks to Bob Minchin I have recently acquired a nice Rapidor Majorpower hacksaw at a bargain price (thanks again Bob).However, having stripped and reassembled it, I'm now puzzling over howit is intended to operate. The key question is whether it should cuton the push or pull stroke.I notice that the blade is set at an angle to the frame, so that itmoves progessively lower as it moves forward. This means that theframe lifts as the blade rides across the workpiece. For this reasonit seems to me that the blade should be set to cut on the push stroke,the oil-filled dash pot then holding the blade clear of the work pieceon the pull stroke.Against this, a book I have on machine tools says that power hacksawsall cut on the pull stroke, and as delivered the blade was fitted so asto cut in this direction. It also seems a good idea to cut with theblade in tension, rather than compression.Can someone out there with a similar saw offer some advice?ThanksMike

Jan 09, 2005 42 Replies

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Mike Whittome 21 years ago

Tony Jeffree writes ...............

I.e. Pushing it!

Mike

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Tony Jeffree 21 years ago

How can a saw be ambidextrous if it doesn't have any hands?

I'd give my right hand to be ambidextrous...

Regards, Tony

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Brian Drummond 21 years ago

The mass is almost unchanged (a few percent increased due to the fuel added) but the volume is greatly increased, due to the increase in temperature from burning the fuel.

The pressure is also increased, but by the compressor at the front. Then burning the fuel increases the temperature and the resulting increased volume exits at the rear - at a much higher pressure than the incoming air, but it had better be lower than that produced by the compressor...

- Brian

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