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Tool Talk Discussion Forum

Old Webster air compressor

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poor tom in Ont

01-12-2004 17:21:16




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I bought an old compressor head last year. Paid $100. I like old machinery and this one looks well built. It's a Webster, about 30+? years old. Single head, single-stage. Must weigh 100 lbs., cast iron, finned and has a massive 3 spoke pulley wheel, 2 grooves. Am trying to determine if it's worth using for spray painting. Bore dia. must be about 3 to 3 1/2". Was going to use a 3 hp. motor at 650 rpm. What cfm. can I expect and can I still get rings? Any help is much appreciated.

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Roger

01-12-2004 18:37:16




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 Re: Old Webster air compressor in reply to poor tom in Ontario, 01-12-2004 17:21:16  
Hi Tom. Webster were fine old machines built in London, Ontario. They were Canada's equivalent of DeVilbiss, building both compressors and paint spraying equipment.(DeVilbiss, incidentally, had been building compressors in Barrie since the mid 50's, until they were sold off back in the early 90's. They are now called DevAir.)

Yes, they were extremely well built, with one or two exceptions, and will last and last if given decent maintenance. Sadly, they went out of the compressor business in the late 80's, but most parts are readily available, since employees bought up all the stock and continued to sell them even after the company folded. Demand for parts is strong enough for them to have new parts made for resale, except big ticket items like crankshafts, which would be cost prohibitive to order in small batches. The easiest way to identify a Webster is to look at the serial number. The first two digits of the serial number is the model number. I think you might have a model 50. I would think this is about a 2-3 hp compressor. Find the displacement of the cylinder in cubic inches, then divide by ten. This will give you the required HP of the motor. Pulley size and rotation speed will have to be determined by amp draw. I think the shop I worked at last year might just have factory specs for this compressor, if you can get me the model number off it, then I can tell you for sure. I know they have ordered Webster parts just this past year, including a new cylinder block for a model 66. Webster parts should be easily obtainable from any decent compressor shop. If you have trouble, let me know. I am in Ottawa.

I was able to snag a beautiful 1969 Webster model 65, 2cylinder, 2 stage, heavy cast-iron pump, with 110-220V single stage 2hp motor on a 50 gallon tank for my Brother in law about two years ago. It was the shop compressor in a firehall and hadn't been used for about 15 years. His jaw just about dropped to the floor when I told him to come pick it up (for free!). It will probably outlast his grandchildren. He has already sanded and painted at least one car with it, no problem.

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Julius

06-20-2006 13:18:17




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 Re: Re: Old Webster air compressor in reply to Roger, 01-12-2004 18:37:16  
I've recently aquired an old Webster compressor Model no 24 (2) serial P15083. It works beautifully and I would like to get some attachements for it - such things as spray painting items and even just connections to pump up tires etc. I live in Montreal, Quebec. Do you know of any locations in or around Montreal?
Thanks, Julius



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poor tom in Toronto

01-13-2004 16:37:02




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 Re: Re: Old Webster air compressor in reply to Roger, 01-12-2004 18:37:16  
Roger, Thanks for the information. I'm glad I bought it now. The serial number is 501294. It is silver right now but I see bits of blue underneath. What colour were the Websters? In case I need them, where could I order parts?



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Ries

04-29-2004 18:44:10




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 Re: Re: Re: Old Webster air compressor in reply to poor tom in Toronto, 01-13-2004 16:37:02  
To Roger or others. I have a webster Serial no on pump is 21-17353 and model shows 24. I am guessing that this is a 2 HP so I was going to put that size of motor on it. Is it a 2 hp? What size of pulley/motor could I put for the greatest cfm. what cfm could I expect from the factory sizes? (2hp? and an 8" pulley"
And help would be appreciated.



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Roger

01-13-2004 20:00:29




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 Re: Re: Re: Old Webster air compressor in reply to poor tom in Toronto, 01-13-2004 16:37:02  
Websters were blue on earlier models, and silver near the end. I would think yours would have been blue origianlly, as Model 50s were pretty old designs.

I don't know where you are located, but Regional Compressor in Ottawa would probably be a good place to start. 613 748 0453. If you are not close, contact any decent compressor repair shop. They should have no trouble finding parts for you. I am pretty sure this is a 2hp pump, as I recall selling an old Model 50 unit a few years ago in Edmonton with a 2hp motor. I flow tested it to exactly 8 CFM at 100psi, which is not bad considering Edmonton is at 2000Ft elevation, which reduces compressor output by about 7%.

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poor tom in Toronto

01-14-2004 04:54:14




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 Re: Re: Re: Re: Old Webster air compressor in reply to Roger, 01-13-2004 20:00:29  
Roger, thanks. That is just enough cfm. for my spray guns. I presently use a twin cylinder, single stage, 17 cfm., 5 hp., 60+22 gal. capacity from Princess Auto. My shop's 1 1/2hp. air filter blows on the 2nd tank(old CH tank) which is 10' from the main tank, then 80' of 3/4" black pipe, some in a series of tall rises and drops w/drains at ea. drop. (for cooling and water removal,Internet supplied all info.) Sometimes the big compressor seems to be too much for small jobs. Where would the Webster be best situated? I could put a valve between the 2 tanks.

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Walter Eyre

09-09-2005 23:12:08




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 Re: Re: Re: Re: Re: Old Webster air compressor in reply to poor tom in Toronto, 01-14-2004 04:54:14  
I have an old Webster air compressor I think it is model no. 38. I was wondering if it matters which way the compressor turns as I mounted a gas engine and it could be turning the opposite way of an electric engine. As of right now it seems to be over heating. The crank case is the same on both sides and I was wondering if I can mount the crankshaft on the opposite side?



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Roger

01-14-2004 21:10:47




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 Re: Re: Re: Re: Re: Old Webster air compressor in reply to poor tom in Toronto, 01-14-2004 04:54:14  
I'd just base mount the compressor and motor, then tie it into the main line with a check valve. You could tie it into the end of the black pipe with a tee, then use the last opening in the tee for a pressure switch to run the Webster. Keep it away from flammable paint overspray. Get an electrician to wire it in for you. I'd also get a heavy-duty pressure switch to run the motor through. Furnas makes one that's good for 28 amps.

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