flyrotary@lancaironline.net Mailing List Archive

The stock 20B pickup tube is long and convoluted – down from the pump, bends around back up where it is supported again, and bends again down into the pan. Wrinkles in the metal on the ID of the bends; and an inside diameter of about 12-13 mm. I threw it and the stock pan away, had a custom lightweight aluminum pan made with the deep part of the sump directly below the pump; larger pickup tube straight down into the oil.

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Kelly Troyer
Sent: Thursday, September 30, 2010 2:19 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Indo for 20B users

Mark and All other 20B Users,

Was looking at spark plugs in the "Racing Beat" catalog and happened on the following

bit of information concerning 20B oil pump pickup tubes.............I do not know if the power

and RPM level used in our aircraft qualifies but further inquiry to Racing Beat should answer

that question..............FWIW

Assembly Notes and Special Requirements

Front Housing

All front housings are machined to accept the “NF01”

stock oil pump - the best performance pump Mazda

has ever made. It will also accept any stock oil pump

pickup. However, you are cautioned that some of the

stock pickups are restrictive for high rpm engines

running high oil pressure. The best example of this is

the 20B pickup, which is not suitable for high power

/ high RPM use. All such engines can benefit from a

1” OD pickup.

Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold