Irvine 36 motor in raptor30

[martin uly]

Hi everyone changed motor in me raptor 30 motor for motor had irvine in it before , set it same as old motor on needles , no8 plug in it running 20slv fuel , fires up ok , ticks over ok but when i put it to half throttle it starts reving up and down and anything over half throttle it cuts out , any ideas please ?

[jimmyhorns]

Hi everyone changed motor in me raptor 30 motor for motor had irvine in it before , set it same as old motor on needles , no8 plug in it running 20slv fuel , fires up ok , ticks over ok but when i put it to half throttle it starts reving up and down and anything over half throttle it cuts out , any ideas please ?

If the engine is new it will need to be run in, as per the instruction manual.

I think the Irvine is a ringed engine, but im not 100% sure, lots of the irvine fixed wing engines are ABC and the running in is very different.

The needle settings will not be the same from one engine to the other, and it sounds like you are running too lean on the main needle.


Set it to the stock (instruction manual) settings for running in and then take it from there.

[martin uly]

Bought engine second hand , no manual with it , have looked online for some base settings but carnt find owt ,

[jimmyhorns]

I've just found the manual. Ignore the low speed needle for now (the screw in the throttle barrel itself that you turn with a flat head screwdriver).

The main needle (the ridged needle to hand turn), should be set at 3 whole turns out from closed - so gently turn it fully clockwise, (counting how many times it makes a complete turn) until it wont go any further (dont use force), and then turn it anticlockwise three whole turns out and then try things from there.

That setting is usually quite rich, but that is the better way to be, and you can then lean it in, but (from personal experience) they do run well enough like that to be able to fly on those settings.

It would be interesting to know what its set to now....