Hello.. does anyone know what part number or type of perry pump I need for an older OS 120 4 stroke (engine has been totally rebuilt) . I see that they make an oscillating type of pump but I have had no experience with any type of pumps or regulators. I plan on putting the engine in a 10 to 12 lb Hellcat warbird ( 70 inch w/s) and thought the regulator and/or pump would help the fuel flow.
Any hints or opinions on this subject?
Thanks in advance!!! John

The Perry VP-20 will probably be what you are looking for. It is the oscillating type of pump that mounts to the back plate of your engine, and works off the engine vibration. I have this pump installed on 2 4-stroke engines (a Saito 1.50, and an Enya .90), and it works well. In both of my situations the engines are mounted inverted, and I could not change the fuel tank location.

Perry makes other pumps that require a pressure tap from the motor, but I have never tried them.

[link=http://www.perrypumps.com/prod02.htm]Perry Pumps[/link]

At last, at last. a message from Ernest T Bass.... Jump in the far, the fars too hot-jump in the pot, the pots too black. Sorry Martin I just couldnt help myself!!! LOL
You know, Andy Griffith has to be one of my alltime favorite shows. The wife and I watch it every nite at 10:30 pm.
Hey , watch those bricks!!! Thanks Martin!!! John

John

You want the vibrator type for glow fuel generally on the 4 strokes. People have been able to get the other crankcase tap type to work via some tricks with the crankcase vent on four strokes but that's a iffy thing.

The Iron Bay type regulator needs some way to make enough pressure to force the fuel up behind it so people have used a check valve in the muffler tap but that's iffy also.

Show us some pictures of your scale models again sometime?

Enjoy,

Jim