OS 40 LA

[@jltaviation]

The os 40 la is a damn good engine, can't go wrong..

[@raddybeer2067]

Just got a old Robbe Porter with this OS LA40 engine and I will ultrasone clean it and try it.

[@Elijamoore69]

What kind of gas do you use with that engine

[@jefflarner]

Hey David, Ive got an OS 762 muffler to use up on a .40 size OS. Will it choke it or enhance it?

[@dmrcflyr2]

I cannot answer that.

[@ryanroy30]

Where can I get 1 of them stands like u have iam new to the gas engine I have been all electric. So I got a O.s 40 La thats blue. Used and about to try and get it running and I just got 2 more I got with planes I got but dont know what they are

[@glaucopimenta]

Hello David! Nice OS engine and great engine running! Please, I have a doubt about the glow plug. Can I put a glow plug type F (ideal for 4 stroke) in a .40 2-stroke engine? Consider using the same fuel with 15% nitro and 18% oil. And... What the diameter and pitch of the propeller you used in the OS .40 engine? Thanks!

[@ripmax333]

I’ve used an OS plug type F on my OS46 ax without problems , on the LA you might try it , regarding prop. A 10x6 or 10.5x6 are best, you can also use an 11x6 but it will loose some top rpm.

[@ryanroy30]

I just looked and 1 engine is a ASP with a number 329 on the side away from pipe and 8811 on the other side buy the pipe so don't know the size then ive got a brat 28. Are either of them good motors

[@chrisshingler9258]

What is the Meter gage ur using?

[@dmrcflyr2]

is is a GloBee optical tachometer

[@francescosala6690]

What fuel David? thanks

[@dmrcflyr2]

it's pink so it is either Morgan's Omega 5% or 10%.