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Reply
| | From:  Legman5597 (Original Message) | Sent: 2/5/2006 12:04 AM |
Hi Guys....I have been using a 16inch Delta for a while now and altered the stroke to the maximium that cutting the frame about would allow, around 30mm.I had to make a new and bigger motor cam to get 30mm but it all works fine and the saw cuts much much quicker !
My question is this.....I am thinking about a Delta P20 but would like to know if the stroke can be made bigger on that machine i.e. would the frame allow such alterations ? Any help would be much appreciated as I have no access to a P20 here in the UK.
Alan |
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Reply
| | | From: Mick | Sent: 2/5/2006 4:57 PM |
| Alan, the stroke on a P-20 is adjustable, but I don't know the numbers. MIck |
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| | | From: Mick | Sent: 2/5/2006 5:11 PM |
| Alan, just found what I was looking for. the adjustment on the P-20 is from 7 thousands to over 30 thousands. Mick. |
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Thanks for the info Mick but I'm a bit confused.
The 7 to 30 thousands you mention are fractions of an inch and I'm guessing they refer to the movement of the blade from front to back as this is normally referred to in thousandths of an inch.
The stroke on the P20 is set at 7/8" (the movement of the arm vertically) and I am trying to find out if physically engineering a new cam to make the arm go up and down at 1.1/4" is possible on the P20. For example, would the arms or cam foul any part of the machine with it's larger movement range ? |
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Reply
| | | From: Mick | Sent: 2/6/2006 3:24 PM |
| Alan, I misunderstood your question, yes that is the back and forth movement that I was talking about. Try www.deltamachinery.com. They should be able to answer your question. Just curious, why do you need a 1 1/4" stroke? Mick |
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| | | From: Mick | Sent: 2/6/2006 3:32 PM |
| Alan, just thought of another person you might get an answer from a lot faster than Delta. Go to www.wmyoung.proboards23.com. a scrolling forum. Bill has a vast knowledge of the P-20. Mick |
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Thanks again Mick. I will check the Proboards forum out. As to why I want to achieve an 1.1/4" stroke.....I realised a long time ago that commercially made machines have to cater for a wide range of end-users needs.Some would want to cut thin stuff and others thicker.Some need to cut at 45 degrees etc etc.It's really the 45 degree tilt that puts a limit on the stroke as the bigger the stroke, the less depth you can cut at 45 degrees ! It seems that the average stroke of 7/8" is a compromise to suit all the needs the machine is likely to be used for.I never cut at 45 degrees but I do cut a lot of 1" thick wood so it occurred to me that a longer stroke would achieve a couple of things.More teeth would be presented to the cutting area and not only be more efficient, but would clear sawdust a whole lot better. I adapted my Delta by cutting the cast frame for arm clearance and calculated the maximum stroke this would allow for making a new motor cam. 1.1/4" is the absolute maximum that the 16" Delta frames allow.One snag I hit was the motor linkage would foul the back of the plastic box encasing the controls but a few spacers soon cured that. The end result is exactly as I had hoped, a much faster cut with better dust clearance and longer blade life.
I would say that in my estimate it cuts about 50% quicker than before. It's a more aggressive cutting action but you soon get used to it.The difference is incredible but these 16" machines aren't really meant for heavy use hence my interest in the P20. I've made other alterations like bearings added to the rear arm linkage but thats another story. A P20 adapted to a 1.1/4" stroke sounds like it might just be what I'm looking for. |
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Reply
| | | From: Mick | Sent: 2/8/2006 3:29 PM |
| Alan, go to www.scrollsaws.com. Rick may be able to help you. Mick |
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