DesignMan

I have this .0061 Diesel from Valentine motors. I am wondering what prop it will swing. Anyone out there with experience on this size engine?

paw080

Hi Larry, why don't you give Ron Valentine a call or email. When you do find out,

let us know, because I've been wanting to buy one also. However if the prop size

range is useless for flying, I don't want one.

Tony Gallegos

Lou Crane

Larry,

Congratulations on HOF!

As a quarter is 1" diameter, that looks like a 5-ish inch Master A/S prop. Might run on that... As paw080 suggests, the only one who isn't guessing is the mfr. I imagine this beauty is of gemstone price range, so I WOULD try to NOT harm it...


Luck!

Motorboy

The engine are based at the Nano engine designed by Richard Gordon. The recommented propeller size are at 3"x1,25". Also the propeller mountd at your are too big for the engine at 1 cc.

http://www.modelenginenews.org/nano/index.html

Diesel Die-hard

I have several of those superb little engines, and I've found that one of the old Cox grey reinforced nylon 4 1/2 x 2 props made for their .020 glow engines works pretty well on the Valentine .0061 when cut down to 3.75 in. diameter, and does move some air. This is a diesel, so the variable ignition timing allows it to turn a useful prop. I suppose that one of the old Cox .010 props of 3.5 in. diameter might also work well, but I've never tried one.

Thi is actually one of Ronald's larger "miniatures" - his smallest is the Nano-Bee at only 0.00037 cu. in. (yes, that is 0.006 cc!).  That one runs on Ronald's custom-made 1 in dia airscrew with a 1/2 in. pitch!!  

One point of which to remain aware - these really tiny engines tend not to last all that long in service, and this is not down to any manufacturing shortcomings.  It's just that the very small combustion chamber volumes mean that piston leak-down has a far greater effect on operating efficiency and it only takes a very small amount of wear to make starting very difficult.  

Adrian

DesignMan

Thanks, guys. I kind of figured the Cox .010 prop or cut down .020 props would work. I have run a 4.5x2.5 cut to 4" on my Bambi .009, but the Valentine is rated to turn over 20K, so I figured I'd better check. I did e-mail Valentine, but no joy so far. []

Diesel Die-hard

Ronald is very tied up at the moment, so he may be a while answering emails!  But I think you have the info that you need anyway.  You'll like the way those tiny engines run!!

I'll be signing off for a while - going on a major caving expedition.  See yaz when I get back!

Cheers,

Adrian

RocketRob

My Feedback: (1)

They run suprisingly well.
My testing yields 15,000 on the cox 3x1.25 and 9,400 on the cox 4.5x2.
Chevy43 did some testing on the orange electric gws props in the 4" range which seemed to prove worthwhile.

I've been trying to get one in the air but can't seem to get back to the project sitting in my shop.


[link=http://www.rcuniverse.com/forum/m_9426021/anchors_9426021/mpage_1/key_/anchor/tm.htm#9426021]Power Mouse[/link]

RocketRob

My Feedback: (1)

with a 12" scale

nitroairplane

i love these tiny diesels is that engine a Ronald Valentine RoVa i am considering getting one

earlwb

Nice plane RocketBob. I hope you put a windshield on it. Even this small the little buggers can be messy.

nitroairplane

i saw this plane one a later thread and he has a windshield on it