Author Topic: Royal .45 (Read 1213 times)

Bill Little · « **on:** March 20, 2011, 12:32:43 PM »

HI Randy,

Whist digging through my engine storage locker, I came across a Royal .45 I got from Dale Barry YEARS ago. I never ran the engine (that I can remember) so what is your suggestion for a starting place, prop/fuel/rpm wise? It looks like a OS .45 FSR as far as I can tell. Going to put it n a Magnum Aaron, and I, built back in about '96 and was only flown maybe a dozen flights (or less, replaced with his NATS plane the Vector II/OS .40VF/Piped).

Thanks!
Bill

RandySmith · « **Reply #1 on:** March 20, 2011, 04:23:21 PM »

Quote from: Bill Little on March 20, 2011, 12:32:43 PM

HI Randy,

Whist digging through my engine storage locker, I came across a Royal .45 I got from Dale Barry YEARS ago. I never ran the engine (that I can remember) so what is your suggestion for a starting place, prop/fuel/rpm wise? It looks like a OS .45 FSR as far as I can tell. Going to put it n a Magnum Aaron, and I, built back in about '96 and was only flown maybe a dozen flights (or less, replaced with his NATS plane the Vector II/OS .40VF/Piped).

Thanks!
Bill

Hi Bill

Is the motor new? how is it setup? who set it up? is it stock? if it is re-timed that can change things greatly depending on who and what...

I setup mine with a 12 x 5 or Bolly 12.5 x 5 2 blade ..or Bolly 12 x 6 3 blade, They run a very nice 4/2 loaded, If you want a high RPM run still in a 4 cycle the 12x4.33 N 3 blade works, or the 12,25 x 4.25 2 blade, 10% fuel 23% oil at least 1/2 syn.
I had many of them pulling Magnums years back, and also Vectors

Randy

Bill Little · « **Reply #2 on:** March 20, 2011, 09:14:15 PM »

HI Randy,

Good questions to which I have no answer. I got it from Dale, used, and don't know if he would remember. I will try the stuff you recommend and go from there.

Thank you
Bill

RandySmith · « **Reply #3 on:** March 20, 2011, 09:17:18 PM »

Put a 12 x 5 rev Up or similar on it and see what it will turn in a peak 2 and then see how fast it will run in a 4 cycle, we can tune from there

Randy

Bill Little · « **Reply #4 on:** March 20, 2011, 09:25:49 PM »

Quote from: RandySmith on March 20, 2011, 09:17:18 PM

Put a 12 x 5 rev Up or similar on it and see what it will turn in a peak 2 and then see how fast it will run in a 4 cycle, we can tune from there

Randy

I can do that one day this week. I have some of the Rev Up 12-5 govt. surplus props I have pitched to 5.

Thanks
Bill

Bill Little · « **Reply #5 on:** April 03, 2011, 01:01:54 AM »

Well, it basically started raining about the time I posted this, so combined with other things I haven't been able to bench run and tach this engine. Maybe tomorrow afternoon!

Bill

Bill Barber · « **Reply #6 on:** April 13, 2011, 02:30:16 PM »

Bill , we are still waiting to hear how that Royal .45 runs ?
Bill

Glenn (Gravitywell) Reach · « **Reply #7 on:** April 13, 2011, 04:21:27 PM »

I had a Royal .45 years ago, don't remember the venturi size I used, but I do remember useing an 11/6 Master Airscrew prop. That thing was scary strong! I had it on a large biplane and I remember my shoulder being sore when done flying. It was a very smooth runner and had no bad habits, it was just too strong for me so I ended up selling it. Good luck with yours and maybe buy an arm sling or two to put in your flight box! LOL

Author Topic: Royal .45 (Read 1213 times)

Bill Little

Royal .45

RandySmith

Re: Royal .45

Bill Little

Re: Royal .45

RandySmith

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Bill Little

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Bill Little

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Bill Barber

Re: Royal .45

Glenn (Gravitywell) Reach

Re: Royal .45