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Delta 46-715 lathe, reeves drive problem

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Forum topic by shipwright posted 10-01-2015 12:41 AM 5358 views 0 times favorited 11 replies Add to Favorites Watch
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shipwright

7172 posts in 2262 days


10-01-2015 12:41 AM

My Delta 46-715 lathe has started powering out at high speed. My first thought was a sticky shaft in the Reeves drive, but after disassembling it and cleaning and waxing the shaft it seems that there is very little spring pressure. I can deflect the moving side of the sheave from the high speed position by squeezing the belt together with two fingers.
Do the springs weaken and need replacement? Should there be more spring pressure than that?
I don’t do a lot of lathe work so I’m not too familiar but I am familiar with the drive because it is very similar to my ShopSmith drive. You couldn’t deflect the moving sheave half that easily on the SS, I’m sure.

Thanks for any insights you may have.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/


11 replies so far

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English

517 posts in 942 days


#1 posted 10-01-2015 01:16 AM

Paul,

I have seen reeve’s drives with a weak spring, but what I have seen more often is the fixed sheave moved enough that the spring was not compressed enough to give good tension.

-- John, Suffolk Virgina

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Jim Jakosh

17170 posts in 2570 days


#2 posted 10-01-2015 01:55 AM

I have taken my Craftsman Reeves drive apart many times. Mine has about a 2” diameter spring on it and if you take it apart without compressing it first, it will shoot all the way across the barn. There is a lot of pressure to keep tension on the pulley to force the belt in or out. If you can squeeze them with your finger, I’d say the spring is way too weak. Check with Delta or on the net for troubleshooting on that model to see if that is a common problem or how to check for proper tension and spacing of the sheaves.

cheers, Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

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shipwright

7172 posts in 2262 days


#3 posted 10-01-2015 02:25 AM

John the fixed sheave is fixed, not going anywhere.
Thanks Jim, my SS spring is like that, huge pressure. This one is a little two inch long spring that seems is easily compressed by comparison. A quick look for troubleshooting online was depressingly sparse on the topic.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/

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Jerry

1768 posts in 1113 days


#4 posted 10-01-2015 02:49 AM

Paul, my tactic to fix this would be to get a few springs from the local hardware store of that are the same size as the original but of varying degrees of stiffness. I’d replace the original with the weakest of the new springs and work my way up the stiffness scale until I found one that would work throughout the range. You may also be able to shim the original to increase it’s pressure.

-- There are good ships and there are wood ships, the ships that sail the sea, but the best ships are friendships and may they always be. http://geraldlhunsucker.com/

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shipwright

7172 posts in 2262 days


#5 posted 10-01-2015 02:53 AM

Thanks Jerry,
That was what I sort of planned. I was just checking to see if anyone had specific experience with this.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/

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rance

4245 posts in 2625 days


#6 posted 10-01-2015 12:09 PM

What model Paul?

(edit:) Nevermind. :) It’s early here and I had to get up at 4:30. Sorry.

I would suspect the pulley is sticking on the shaft before anything else. But that’s just a guess.

-- Backer boards, stop blocks, build oversized, and never buy a hand plane--

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Ocelot

1470 posts in 2103 days


#7 posted 10-01-2015 01:19 PM

Paul,

I don’t know anything about it. But on ebay, here is a spring. Probably, it’s no better than yours.

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shipwright

7172 posts in 2262 days


#8 posted 10-01-2015 02:24 PM

Rance, yes it must be early :-) that was the first thing I tried …. Not the problem.

Paul, thanks but he’s selling a used spring (makes me wonder why) and BTW he is selling it for over five times the new price. :-)

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/

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Ocelot

1470 posts in 2103 days


#9 posted 10-01-2015 03:48 PM

Figures. :-) Like I said, I don’t know anything about this. I think the ebay guy is parting out a lathe.

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shipwright

7172 posts in 2262 days


#10 posted 10-02-2015 02:55 AM

Problem solved!
Not exactly sure why but when I tried it out today under load it didn’t power out any more. All I did was clean and wax. That should help if the problem was sticking but powering out would imply that the sheave was slipping apart due to poor spring pressure. Anyway I don’t care how it got fixed, just happy it’s back.
If I had a buck for every time I’ve taken something apart and put it back together, fixing nothing, and had it “fixed” afterword, I could buy something nice. :-)

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/

View Rick M's profile

Rick M

7922 posts in 1844 days


#11 posted 10-02-2015 09:12 PM

That’s good news. I don’t know anything about Reeve’s drives but have been reading along since I like lathes. When I get old machines the first thing I like to do is take them apart, clean, and reassemble, it’s amazing how much better they run afterward.

-- http://thewoodknack.blogspot.com/

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