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Discussion Forum

Bendix-Westinghouse Tu-Flo 300 Air-Compressor


01-07-2002 13:55:26

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Does anyone know if a Bendix-Westinghouse Tu-Flo 300 air comp. would work for pumping into a 50 Gal. tank for shop use? What is the max. pressure I could expect? I believe it was used on big truck for air brakes. Would a 1740 RPM motor be ok? Any info. greatly appreciated. Thanks in advance. Joe

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01-08-2002 12:37:00

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 Re: Bendix-Westinghouse Tu-Flo 300 Air-Compressor in reply to Joe, 01-07-2002 13:55:26  
Thanks for all of the info.! Sounds like it might just work. Now it's time to decide to invest $$$ in motor or a complete small Air Comp. and plumb it into the big tank! What do you guys think about that in the long run? Thanks again to all! Joe

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John in MA

01-08-2002 22:09:35

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 Re: Re: Bendix-Westinghouse Tu-Flo 300 Air-Compressor in reply to Joe, 01-08-2002 12:37:00  
Don't invest $$$ in a motor--get one for free! All the motors I have came from the local dump. I'm sure there are places near you where you can pick one up.

Good luck. I have a 20 gallon compressor I built totally from dump-landed parts. I can send you a photo if you'd like.

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01-08-2002 09:33:57

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 Re: Bendix-Westinghouse Tu-Flo 300 Air-Compressor in reply to Joe, 01-07-2002 13:55:26  
You could use it for compressing air if you really wanted. As for as the PSI that this compressor is capable of...250 to 300 PSI if the unloader valves are not unloaded from the air govenor. That's right! The air govenor. You will find small ports in the head area of the air compressor. One may even be plugged off. This port is the port where the air govenor sends the air signal and tells the compressor to stop compressing even though the compressor continues to rotate. It achieves this by lifting the unloader valves off their seats to prevent compression of air. The govenor receives the pressure from the air tank. So you see it would get involved if you want to properly and safely build something. A regular truck supply resovoir has a relief pressure of 150 PSI.

You certainly would not want your vessel to explode. It would be deadly.

Good luck and be careful.


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01-07-2002 17:14:29

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 Re: Bendix-Westinghouse Tu-Flo 300 Air-Compressor in reply to Joe, 01-07-2002 13:55:26  
It will only work if it is air cooled and uses a belt drive with a sealed sump and crank driven oil pump. Otherwise, you are stuck trying to hook up a water cooling system.A flange mount compressor is also designed to use the diesel engine's pressurized oil to feed the crank and wrispins. Also, oil is designed to flow out through the front of the flange and back into the engine through the front accessory drive mount. It would be a nightmare to try and provide a pressurized oil supply and a water cooling system, just to get 7 cfm of air.

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01-07-2002 17:48:27

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 Re: Re: Bendix-Westinghouse Tu-Flo 300 Air-Compressor in reply to Roger, 01-07-2002 17:14:29  
Thanks for the info. I beleive it has a slinger for oil lub. and is sealed. Doesn't sound like it will produce much air and probably not very high psi. It was in the barn and just got a good 50 gal. tank from work, I was only wishing! Another one that won't come true! Thanks alot.

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01-07-2002 19:11:30

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 Re: Re: Re: Bendix-Westinghouse Tu-Flo 300 Air-Compressor in reply to Joe, 01-07-2002 17:48:27  

If that was what I had to work with I wouldn't give up too soon. A 50 gal tank at 90 to 120 psi is a lot of air. It my take the comressor a while to fill the tank but the you have enough air to say change 4 car wheels using a 1/2 in impact and maby 1 tractor tire using a 3/4 inch impact. Have to wait untill it recovers but that still beats the heck out of doing it by hand. You mentioned a 1725 electric motor. I would pully ratio it at about 4 or 5 to 1 and see what happens.

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01-07-2002 20:47:39

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 Re: Re: Re: Re: Bendix-Westinghouse Tu-Flo 300 Air-Compressor in reply to buck, 01-07-2002 19:11:30  
Do you think it can develop that kind of psi? If so I may give it a try. I got pressure switch,piping,check valves and all with the tank. The compresser has an 8" pulley on it, what do you think I would need motor HP and pulley size? Thanks for the advice! Joe

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01-08-2002 09:59:18

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 Re: Re: Re: Re: Re: Bendix-Westinghouse Tu-Flo 300 Air-Compressor in reply to Joe, 01-07-2002 20:47:39  

well a 1 hp with a 2" pully may do the trick. Does the system have an unlader valve? assuming no unloader then it may have a harder time getting started. I believe I would start with a 3hp capasitor start motor and if buying would go with a dual voltage. Reason for the 3 is that many 110V circuits cant take the starting loads of a 4hp. Now if you going with a 220 circuit I would go with a 4hp motor and if the compressor is slow then you can keep your eye out for a little larger one. As for the pulley say a 3" with a 1725 motor and if it handles it well move up to a 4" Would try to keep the compressor areund 800 rpm. On your pressure just place an engine compression gauge on the discharge of the compressor(one of the push in rubber stopper type will work well) and check what it is capable of and set the upper limit asy 10 psi may want to do this before getting too invloved but will have to have way to spin it over.

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01-08-2002 01:30:53

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 Re: Re: Re: Re: Re: Bendix-Westinghouse Tu-Flo 300 Air-Compressor in reply to Joe, 01-07-2002 20:47:39  
Did just that few years ago. Think had about a 3" pully on a 3/4 hp 1725 motor. Brothers and neighbors thought I was nuts (every time they came to use it) Had an old Windshield washer bottle and merely stuck the oil line in the top. Put a plate with a fitting on the bottom to catch the oil into a coke bottle and then dump back into the gravity WW bottle. Intermittant use, so didnt even plumb any water. Painted some of FCub with it, pumped many a tire, etc. Painted an entire 66 Chev Conv in my backyard. This was an ollllld truflow with many miles on it. Had plumbed the unloader to make it easier starting but the 30 gal tank and fittings leaked so that for intermittant use, usually press would be gone anyway. Had set the kickoff for about 100 psi. Used Mobil 1 oil. Only problem was that rings were getting so bad that was getting oil in the air. Go for it!! Worked for me for 10 years until the price of commercial air comps came within my pocket range.

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01-08-2002 13:16:31

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 Re: Re: Re: Re: Re: Re: Bendix-Westinghouse Tu-Flo 300 Air-Compressor in reply to olddawg, 01-08-2002 01:30:53  
Thanks to all! Now, would the smart money go for a motor or a complete small unit and plumb it into the big tank? Thanks again! Joe

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09-23-2003 11:44:56

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 Re: Re: Re: Re: Re: Re: Re: Bendix-Westinghouse Tu in reply to Joe, 01-08-2002 13:16:31  
I was reading your about your progress with the tu-flo. I'm in the middle if doing the same thing with a pump I found at the dump (just because someone threw it out doesn't mean it's useless). At the moment I'm using a 3/4 horse motor from my table saw. Any info you could pass on would be appreciated, especially about the lubrication and cooling. Thanks.

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