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Old 07-27-2011, 05:55 PM
mrsawdust mrsawdust is offline
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Default speed reducer

I want to turn bowls of larger diameter. I have a Mark V. I have seen the speed reducer in accessories, but I need to if any one have used one and what success they have had.
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Old 07-27-2011, 09:20 PM
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SDSSmith SDSSmith is offline
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I have one and have used it. It does what it is advertised to do and that is a speed reduction of 10:1. I have also used it to power the bandsaw. As far as turning goes, I removed the speed reducer once I got the large blank round. Even with the reducer, you still want to rough the blank between centers.
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Old 07-28-2011, 12:30 AM
paulmcohen paulmcohen is offline
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Quote:
Originally Posted by mrsawdust
I want to turn bowls of larger diameter. I have a Mark V. I have seen the speed reducer in accessories, but I need to if any one have used one and what success they have had.

I have used it to turn large logs that were not close to round. I just sold mine when I got the PowerPro since it goes even slower.

When I sold it, the person who purchased it know a lot more than I did about and said mine had some manufacturing defects from Shopsmith (wrong belts and some other issues) but it did not affect my usage.

So warning if you purchase one secondhand make sure you check out the insides.
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A 1982 500 Shopsmith brand upgraded to a Mark 7 PowerPro, Jointer, Bandsaw (with Kreg fence), Strip Sander, Ring Master and lots of accessories all purchased new
12" Sliding Compound Mitre Saw, 1200 CFM DC
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Old 07-28-2011, 08:46 AM
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wa2crk wa2crk is online now
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Paulmcohen;
I have the speed reducer and I have never heard of the manufacturing defects that you mentioned in your post. Can you be more specific? I would appreciate any info that you can give.
I have only used mine a few times and have not had a problem.
Bill V
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Old 07-28-2011, 05:48 PM
mrsawdust mrsawdust is offline
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Thanks for all the input, I have decided to up grade to a power pro.
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Old 07-28-2011, 08:59 PM
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cincinnati cincinnati is offline
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Quote:
Originally Posted by wa2crk
Paulmcohen;
I have the speed reducer and I have never heard of the manufacturing defects that you mentioned in your post. Can you be more specific? I would appreciate any info that you can give.
I have only used mine a few times and have not had a problem.
Bill V

Same here

I purchased one at the Factory right before they discontinued it many years ago. (now back on the market)

Be interested to know what the issue is. And not just a buyer trying to get one at a cheaper price.
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Old 07-29-2011, 01:44 AM
paulmcohen paulmcohen is offline
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Quote:
Originally Posted by wa2crk
Paulmcohen;
I have the speed reducer and I have never heard of the manufacturing defects that you mentioned in your post. Can you be more specific? I would appreciate any info that you can give.
I have only used mine a few times and have not had a problem.
Bill V

I never had a probelms with it either but the person who purchased it thought I had modified it. He said the belts used were of a different type then specificed in the manual.

What he said exactly was
Quote:
Originally Posted by Paulmcohen
Checking the interior through the inspection holes, I noted that the output drive belt was misaligned on the sheaves, creating significant wear on the belt and housing. When I separated the unit, I found that previous belt tension adjustments, made to compensate for the misaligned belt, had offset the idler sheave to the point that it rubbed on the housing, creating serious abrasion on the sheave and housing. The unit also has the wrongpoly-v belts: it has 2 headstock drive belts (#504170), as opposed to the matched set (#515988) specified in the manual.


As I explained this is how I received the unit directly from Shopsmith and I never had issues using it. I guess he was able to adjust the unit and was happy, I don't believe it was a price issue as the subject never came up.
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A 1982 500 Shopsmith brand upgraded to a Mark 7 PowerPro, Jointer, Bandsaw (with Kreg fence), Strip Sander, Ring Master and lots of accessories all purchased new
12" Sliding Compound Mitre Saw, 1200 CFM DC
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Old 05-15-2012, 02:25 PM
sunset22 sunset22 is offline
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Default That is interesting

I just picked up a used one from a guy that his dad bought. The mounting bracket was still stapled and in the bag. The belts don't show any sign of wear. I don't think the dad ever used it. I set it up according to the manuel, but there is a 1/64 in of wobble in it. Maybe that is normal. I have noticed that one belt does feel a little tight. I am going to check the numbers. make sure they are the right ones.

Thanks for the information

Sunset22
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Old 05-15-2012, 02:48 PM
sunset22 sunset22 is offline
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I just checked the numbers on mine 504170 for both. It cross reffence to 521681. The manuel shows the same number for both.

sunset22
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Old 05-15-2012, 09:04 PM
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The next SPT I want to buy is a speed reducer. Just missed the sale they had last year and have been waiting for another. Think they are priced a bit high, but willing to go that route if in sale.

I want to use it with my PowerPro for bandsawing and maybe to turn large items.

Think the speed reducer will put an end to the bucking/slamming that the PowerPro does with the bandsaw?????
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