Dear Brian:

The PIPE Here yet AGAIN...and it's the Perry VP-20 "Shaker" pump, better known as the Micro-Oscillating pump, that WOULD be best to use for your Saito 91!

The best INITIAL setting to use for your 91 four stroke, as I've used on on my similarly sized OS FS-90 REAR camshaft four stroke some 20 years ago, would be about at a 330º rotation...about "11 o'clock"...from its fully CLOSED position. Just GENTLY use an adjustable hex wrench to fully rotate the aluminum hex fitting at the OUTPUT end of the "Shaker pump" CLOCKWISE, to its "fully closed" position, and then while it's still "fully closed", mark the pump's hex fitting with a "permanent" marking pen, like a Sharpie marker pen, with a line going from the center of the hex fitting out to its outside edge for a "reference mark"...and rotate that hex fitting COUNTERclockwise with the wrench to "loosen it up" in ALMOST a full circle of rotation, to an "11 o'clock" position, and you'll have the "Shaker" pump all set to use!

I still HAVE that veteran FS-90 four stroke...it will be going into a Sig Four Star 60 kit I intend to pick up this Fall, for winter building...and for "kitbashing" into a Fun Scale "Agri-Batic" CROPDUSTER low winger, which I've mentioned in a thread here at http://www.rcuniverse.com/showthread...13&forumid=107 !!!

Haven't built a kit in some 20 years now...just got BACK to RC flyin' in 2001, after 15 years away from it...and I ONLY fly with four stroke engines and those "knobby" radios...



...that are ALSO called "single stick" radios...and YES, I build ALL of my own RC transmitting gear!

Hope you get yourself a VP-20 "Shaker" pump for your Saito 91, Brian, and have yourself one heck of a GOOD time! (too HOT for ME to be RC flyin' though...hope FALL comes along soon!)

Yours Sincerely,

The PIPE! )