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Tractorsport Flowbench Forum Archive • View topic - Building a new bench - Thrying to retire my SF110

Building a new bench - Thrying to retire my SF110

A place to post links to your flowbench projects to share with everyone on the board.  You can share a description and pics also here please limit the size of your picture files to low res pics, Thanks

Postby gofaster » Mon Feb 26, 2007 10:15 am

Erik,
I started to use Delrin, but was concerned about stripping the threads. Delrin and aluminum cost nearly the same, and I felt more comfortable trusting the aluminum. I liked Delrin because there was no fear of corrosion. I treated the threads of the steel and aluminum parts with a dry graphite lubricant. It is applied with a brush, and dries like paint.
Jim
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Postby Thomas Vaught » Mon Feb 26, 2007 9:37 pm

I used "half-moon" shaped parts similar to the "bowls" used in the old
MSD articles but made the valves out of aluminum, very rigid!

The valves have a sealing flange that is 1/2" larger in diameter than
the "bowl" diameter.

I made the valves with a helicoil insert that was loctited in place so when the threaded rod is turned the valve will move. To keep the valves in one position (so they don't turn) I added a tab on the flat side of the valve with a smooth rod some distance away from the valve edge. This
smooth rod moved inside a close tolerance hole in the valve sealing partition. No leaks past the rod but the valve can move open or closed and remain in a basic position (like say 3:00 on a clock face) as the valve moves in and out in the flow hole.

This allowed me to also be able to make flow adjustments without the flow knobs getting higher or lower on the bench face.

Tom V.
Thomas Vaught
 
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Postby gofaster » Tue Feb 27, 2007 12:18 pm

Here are more pictures of the motor board, the valve assembly, and the orifice plate.

The motors are Ametek 115923's. They are glued to the board with construction adhesive and located by oak slats with felt pads, and I used wing nuts so I wouldn't overtighten and crush the fan housings. They are kinda fragile. I used a router to radius the entries. The plate holding the wiring cordgrips is supported by a board that mimics the placement of the plate on the bench. The plate is stainless steel.

On the back of the valves there's a 3/8" rod that is parallel to the threaded rod which keeps the valves from turning. The valves are opposed. That will let depression help seal the intake when exhaust testing, and pressure in the cabinet will help seal the exhaust valve when testing in intake mode.

The orifice plate is stainless steel with "square edged" orifices. It will use rubber stoppers per Thomas Vaught's suggestion. The largest opening has four thumbscrews surrounding it. This is so I can try using some of Bruce's orifice plates over this opening to compare results with my openings. If I like the results/repeatability with Bruce's plates better than my own it leaves me the option to switch without having to tear the bench apart.















My thanks again to flh1960 for hosting the pictures for me!
Jim
gofaster
 
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Location: Indiana

Postby larrycavan » Tue Feb 27, 2007 3:04 pm

larrycavan
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Postby Erik » Thu Mar 01, 2007 2:13 pm

Jim

My threaded rod dont rotate it is fixed in the delrin pice the nut for the thread sits inside a pipe that rotates and are fixed to the front panel so this allowed me to also be able to make flow adjustments without the flow knobs moving. I also have a rod and a giude on the face of the delrin pice so it dont rotate.

My finale pictures
Erik
 
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Location: Sweden

Postby larrycavan » Thu Mar 01, 2007 8:39 pm

Nice Eric.
larrycavan
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Postby bruce » Thu Mar 01, 2007 9:38 pm

Yup nice bench!
"There is no more formidable adversary than one who perceives he has nothing to lose." - Gen. George S. Patton
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Postby Thomas Vaught » Thu Mar 01, 2007 9:47 pm

You can wire any of my benches any time you want. Nice work.

Tom V.
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Postby FPV_GTp » Mon Nov 17, 2008 6:10 pm

wooooooooooooo Eric nice work , gofaster nice also

bruce if you see my workshop you would assume a bomb hit the place but then again I know where everything is :D :D :D

Being tidy there is nothing wrong with being anal about things but definitely looks good for the customers when they come into a clean workshop.

Dammm I have heaps of work ahead of me and more reading to do.

cheers
Ford Sale - ( Melb , Aust ) - Engine Dynamometer Heenan & Froude G490EH 1,500Bhp@15,000rpm - Ship World Wide
FPV_GTp
 
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Postby blaktopr » Wed Nov 19, 2008 8:45 pm

From looking at all these benches on this site, I have to say mine has to be the ugliest bench in existence. :( Looking good dude.
Chris Sikorski
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