FP needle valve and venturi are available from Tower. Great running engines. On the fast side. Let it rip.

After having "some" trouble with the original remote NV, I installed the correct OS NVA in the venturi and just cut the remote NV off the back plate.

I also enlarged the hole in the muffler baffle plate to about 2x what it was.  Running a MasterAirscrew 8x4 at about 10,000 on Powermaster 10/22. Gives a reliable wet two stroke until the last 2 or 3 laps on my grandson's Ringmaster Jr.

Jim

Agree with all! It's also quite a bargain, especially used.

The LA .15 is a fine little sport engine. I bought mine as an RC version, made a quick venturi and was in business.

Mine had a rather bulky baffled muffler. I removed the baffle, shortened and lightened it and it works perfectly.

I run a 7-6 Master Airscrew and Brodak 10/23 fuel. Single vent tank, no uniflow, no muffler pressure.

Set is lean on the ground and let it scream through the flight.

Bob Z.

Todd put a pair of 15 LA's on his Trixter A-B Twin...   used the 15 FP backplates with 15 FP nva's and venturi's.  He removed the baffle from the stock mufflers...   APC 8x4 props and a nice two stroke setting on Sig 10% Champion fuel.  They run like a pair of little watches!
Jim