vugs
starting to spend too much on rocks
Rockbiter
Member since February 2014
Posts: 225 
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Post by vugs on Dec 6, 2014 12:46:09 GMT -5
Hi All, i just got a great deal locally on a Highland Park B-26 and it could use a new expandable drum. Would any of you happen to have a 3" or 4" drum available? I would be willing to buy both. Thanks in advance.   |
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Post by jakesrocks on Dec 6, 2014 13:45:25 GMT -5
Standard sizes on expanding drums are 6" & 8". You may have a problem finding anything smaller. You might try wood working tools for smaller inflatable drums, if they still make them.
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vugs
starting to spend too much on rocks
Rockbiter
Member since February 2014
Posts: 225
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Post by vugs on Dec 6, 2014 13:59:14 GMT -5
Standard sizes on expanding drums are 6" & 8". You may have a problem finding anything smaller. You might try wood working tools for smaller inflatable drums, if they still make them. Oops.. I should have been more specific. I meant an 8" x 3" or 4" wide drum. |
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Post by jakesrocks on Dec 6, 2014 14:04:49 GMT -5
8" X 3" are easy to find, but buy American made. I've heard nothing but bad reports about the Chinese imports.
Is that an expando wheel, or one of the older lever lock (Bump wheel) types ? I have several of the lever lock types.
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vugs
starting to spend too much on rocks
Rockbiter
Member since February 2014
Posts: 225
|
Post by vugs on Dec 6, 2014 14:23:27 GMT -5
8" X 3" are easy to find, but buy American made. I've heard nothing but bad reports about the Chinese imports. Is that an expando wheel, or one of the older lever lock (Bump wheel) types ? I have several of the lever lock types. Shoot Don now that you mention it im not sure if its a lever lock wheel as im not familiar with those. What is the difference? |
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Post by Jugglerguy on Dec 6, 2014 14:41:16 GMT -5
I was given some tumbling grit along with two expando wheels recently. I don't know anything about expando wheels, so these might be garbage, but I'll send them to you for nothing if you want them. I don't have a use for them. holes are 5/8" They're six inches in diameter and 2.5 inches wide. The edges seem to be worn a bit.   This washer was stuck to one of them.  If you want them, give me your address. If these are junk, would someone please tell me so I can throw them out to make room for more rocks? |
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Post by jakesrocks on Dec 6, 2014 16:04:36 GMT -5
8" X 3" are easy to find, but buy American made. I've heard nothing but bad reports about the Chinese imports. Is that an expando wheel, or one of the older lever lock (Bump wheel) types ? I have several of the lever lock types. Shoot Don now that you mention it im not sure if its a lever lock wheel as im not familiar with those. What is the difference? I don't have a pic of the lever lock wheels, but the difference is the expandos take a round band of sand paper, and the lever locks take a long strip of paper. Both ends of the strip fit through a slot in the wheel, and by turning the lever it tightens and locks the paper in place. |
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Post by jakesrocks on Dec 6, 2014 16:27:36 GMT -5
Had a wheel handy so took a quick pic. This is an HP wheel. probably the same as would have originally been on your machine. On the HP drums and a couple other brands I know of they used a screwdriver and wrench to tighten and lock the sanding strip. Some other brands used a lever to do the same thing.  |
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Post by deb193redux on Dec 6, 2014 18:16:24 GMT -5
I don't understand the picture. What is all that part above the wheel? Is it like a belt sander?
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Post by catmandewe on Dec 6, 2014 18:36:31 GMT -5
That is not an expando drum, it is a belt sander that takes the (I think) 43" belt. The belt goes over the top and bottom roller and the top roller has a tensioner on it to keep the belt tight.
Tony
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Post by catmandewe on Dec 6, 2014 18:37:15 GMT -5
I do have some of those belts laying around here somewhere if you want some.
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vugs
starting to spend too much on rocks
Rockbiter
Member since February 2014
Posts: 225
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Post by vugs on Dec 6, 2014 20:55:12 GMT -5
jakesrocks Ok, i see now. Thanks. This is not a lever lock. Jugglerguy Thanks, i appreciate the offer but those wont work with this machine. deb193redux This is basically a wet belt sander with a polishing wheel. So its similar to a bull wheel. catmandewe Thanks Tony. This takes 41 1/2" belts. If you've got extras i can use them. Also, what type of drum do i need if this isnt an expando and its not a lever lock? I read you can replace the stock drum on this machine with a 4" wide drum and run 4" belts.
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Post by deb193redux on Dec 6, 2014 21:53:35 GMT -5
drum is the wrong term, because that is used for belts that fit on the circumference of the wheel.
I would call these rollers. Also, no idea where to get 4" rollers. But, there are plenty of sources for 3" belts. That is a standard width. Even if you found the 4" rollers, I think you would have trouble getting 4" wide x 41.5" belts. Sounds expensive - especially if you got a range of grits.
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Post by jakesrocks on Dec 6, 2014 22:09:32 GMT -5
You may be able to replace the bottom wheel with an expando drum, but they're only 3" wide. You'd have to devise a lower hood for it, or take a shower every time you turned it on.
I've never seen a HP wet belt sander. Why change it? Lots of people on here would kill to have it as is. I picked up a Covington upright wet belt sander a while back, and can't wait to get it mounted and running.
As for the wheels that are already on it, they're the right wheels for the belt sander. There was no rubber on them.
There will probably be enough up & down adjustment on the upper wheel that tony's 43" belts might fit. Play with the adjustments and see what you have.
After taking a better look at your machine, my guess is that the lower lever is to align the top & bottom wheels. The lever just above it will be for adjusting the tension on the belt. And my guess is that the knob on top is for fine tuning the tracking of the belt on the wheels, much like a wood workers belt sander.
Maybe someone on here has used one of these machines, and can give you better instructions.
One other thing. On a wet belt sander, you don't sand against the drums. You sand on the belt just above the bottom drum. Even if you can't get 4" wide belts anymore, the narrower belts that are available will still work.
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Post by catmandewe on Dec 7, 2014 0:20:37 GMT -5
If you don't want this I know someone who will buy it. I have bought and sold half a dozen of these units, they are pretty sought after.
Don't change it around, it was designed to work that way and it does work well.
Tony
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Post by johnjsgems on Dec 7, 2014 9:47:30 GMT -5
There was a belt sander like that at Desert Gardens 2 years ago. It moved from one booth to another doubling price each time.
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vugs
starting to spend too much on rocks
Rockbiter
Member since February 2014
Posts: 225
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Post by vugs on Dec 10, 2014 11:51:44 GMT -5
Thanks for all the input guys. catmandewe I'll be holding on to this for now and putting it to use. I'd like to make knife handles and i think this is a good machine for that. For future reference.. If anyone reading this has a replacement roller/"drum" for this machine pm me if you'd like to sell it. |
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Post by jakesrocks on Dec 13, 2014 19:19:57 GMT -5
Got the old 69 HP catalog today. I'll post the page with your machine in a little bit.
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Post by jakesrocks on Dec 13, 2014 19:42:18 GMT -5
Here you go. Really not much info in the old catalog, but at least it tells you the proper belt size. And check out the 1969 price. LOL  |
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Post by Peruano on Dec 14, 2014 9:29:46 GMT -5
That's a geode polishers dream machine. I always assumed belt sanders were used dry, but that one is wired for water. An the vertical polishing wheel shroud has enough of a lip to contain the cerium oxide slung from the polishing process. I don't understand all of the adjustments at the top. Cool machine. Tom
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