I am about to buy a Davis diesel conversion head for:


Thunder Tiger Pro (does not have angled back needle) .25

or

K&B Sportster .28




How did yours idle?

How did yours transition?

What RPM did it turn what prop?


Thanks
Francis

Francis I have a pair of tt25pros in a twin star it has 9x7 wood zingers, I have not flown the plane yet but as I remember they transitioned well could bal rpms and think turned at least 10K, I hope to fly it in the next month, It is altogether and static tested, Davis predicts it will be a sky rocket with this setup cannot give any answers on the 28s since I do not have any,the TTS look good however martin
yes they have Davis diesel heads
I will try some 3 blades, ground clearance limits me to to 9 inch props

Francis,
I owned and flew a K&B Sportster28 for 10 years with a Davis head. Fantastic combination. Used every prop up to and including an 11/7. It's retired now but is still in very good condition and still was running perfectly when last used.'
Dennis

Dennis,

What RPM on what prop do you remember it turning?


Francis

Moot point as I bought a used OS FX .25 from a friend. Bob's favorite, a Diesel OS.


Francis