gyropilot
04-26-2004, 06:30 PM
When a Rotax 2-stroke engine has the fuel pump mounted below the crankcase, the pulse-driven fuel pump *must* have a small weep hole drilled at the lowest installed location in order to drain crankcase condensation which can collect inside the fuel pump housing. If this condensate is allowed to collect inside the fuel pump, hydro-lock of the fuel pump diaphragm can occur... and it *will* stop pumping fuel.
An unfortunate side-effect of this essential fuel pump modification is that oily crankcase condensate gets blown out the weep hole and winds up all over the airframe, the prop (in a pusher configuration), and the tail.
For those of us who appreciate a clean gyro, to the rescue comes "The Fuel Pump Catheter (tm)" kit from Landco Inc.
First the fuel pump housing is carefully milled at its lowest installed point to accept a tiny little 1/8" barbed hose fitting. 1/8" ID fuel resistant line is then routed to a convenient location on the airframe where a small polyethylene catch bottle is mounted.
After exhaustive flight testing, I'm happy to report this modification works flawlessly. Oil coated prop blades and tail are now a thing of the past.
The kit is only $999.00 (after a limited $100.00 mail-in rebate), and includes a new Mikuni fuel pump, plus free UPS ground shipping to your door. Supplies are very limited.
Pictures attached.
An unfortunate side-effect of this essential fuel pump modification is that oily crankcase condensate gets blown out the weep hole and winds up all over the airframe, the prop (in a pusher configuration), and the tail.
For those of us who appreciate a clean gyro, to the rescue comes "The Fuel Pump Catheter (tm)" kit from Landco Inc.
First the fuel pump housing is carefully milled at its lowest installed point to accept a tiny little 1/8" barbed hose fitting. 1/8" ID fuel resistant line is then routed to a convenient location on the airframe where a small polyethylene catch bottle is mounted.
After exhaustive flight testing, I'm happy to report this modification works flawlessly. Oil coated prop blades and tail are now a thing of the past.
The kit is only $999.00 (after a limited $100.00 mail-in rebate), and includes a new Mikuni fuel pump, plus free UPS ground shipping to your door. Supplies are very limited.
Pictures attached.