OS 32 and Buster

At 75 years old and having messed around with RC for quite a while, I would now like to relive my youth and fly some CL again. So I need some expert advice. I have an NIB OS 32F ABC that I purchased about 17 years ago. With the throttle wired open can I use it on Brodaks Buster on 52 ft lines? I need lap times rather slow as long as I have good pull and control. Thanks.

Cliff

Cliff,
You can run the OS32 on the Brodak Buster although it might not be the very best choice it will serve to get you flying again. One thing to realize is that this is not a "slow" engine and will be happiest turning revs in the neighborhood of 10-11,000 RPM. This is acceptable but requires the use of a lower pitched prop than would be typically indicated by "old" technology to get reasonable speed. Probably something in the neighborhood of a 10 X 3 or 11 X 4 will get you in the ball park.
The Buster doesn't have a lot of prop clearance with the stock landing gear so the 10 inch diameter will probably be necessary.
The other thing to mention is that you definitely will not want to use 52 ft lines. 60 ft eyelet to eyelet will be more likely to get you reasonable lap times.
I assume by your mention of the Buster that you already have one of those. If not there might be better choices for airplanes. The Buster is not a bad one, but there are others that would make better stunt trainers.

Randy C

In the late '80s/early '90s, following initial hops with a Flite Streak Trainer, JoAnn flew her Goldberg Buster with no problems -- even doing a couple of loops (unintentionally, perhaps). The engine was a McCoy .19 front rotor...9/6 prop. She had no problem controlling the Buster, and in fact did quite well with it.

As Randy suggested above, do use 60' lines rather than 52'. And definitely go with the lower pitch prop.

You'll enjoy it, I'm sure. Keep in touch, and let us know how it goes. Welcome back to CL.

Mike Keville

Last year I built a Brodak Buster and stuck my old K&B 35 Stallion on it like I had in the late 60's. FUN Only problem is tank room can be a premium.

[photo not recovered: 29510.jpg]


[photo not recovered: 29511.jpg]

Attachment #1, (jpg file)
Attachment #2, (jpg file)

I'm using a .32F on a Gotcha Streak and even with a 10X4 prop its still way fast! On a Buster I'd go with 70' lines.
Dwayne

Keep a handle on em!

Guess you could throttle it down. My Brodak Buster built light. Put a Tower 40 on it and let it howl. Lots of fun on '60 lines. Turned tight, didn't appear to ever slow down. With a 25 you could fit a tank to do the pattern. I couldn't do that with my 40. Anyway, it's fun. I never flew it slow, so I don't know about it's merit as a stunt trainer.

I have an OS .32F ABC in this RC plane...

[photo not recovered: photo5.jpg]

...and it will haul it straight up after take-off.
I'm at the bottom end of control line experience spectrum on this forum, but I've gotta think that engine in the Buster would be PLENTY of power.

Jim

P.S. - No cracks about the glasses - that pic is 15 years old.

Since you asked...for what you want the OS-32 is Waaay too much power for a Buster - unless you want to go really fast. They fly great on a .19 size engine, McCoy or Fox 35 or any of the plain bearing 20-25 engines. I have built a couple of them, the one I am flying now has been modified into an F4-F for carrier. With an OS-32, THREE .015 60' lines it has been timed at 84 mph. Great for carrier, not so good for stunt. Use a lower powered engine and have fun. The Buster is a great plane - one of my favorites. Suggestion - use that OS-32 in a Brodak Guardian!

>Last year I built a Brodak Buster and stuck my old K&B 35
>Stallion on it like I had in the late 60's. FUN Only problem
>is tank room can be a premium.
>
>[photo not recovered: 29510.jpg]
>
>
>[photo not recovered: 29511.jpg]
>


Is the orange battery box homemade? What size cells are in it...D?

>Is the orange battery box homemade? What size cells are in
>it...D?

The battery box is from Radio South. Good equiptment.

Chad Hill

The OS 32F is pretty much a slow combat engine. You can get drop-in venturis and NVA's for it from Jim Carpenter up in New England. Check out the New England Combat News website. The Buster will be a blast to fly with that engine. You can run a 9x4 APC prop on it. Fast is good. It keeps your adrenalin flowing. And it keeps your concentration up.

I believe I saw a Primary Force using this engine at Brodak. It flew in Beginner. Quite a sight. It had a very harsh 2x2 break. When the plane hit the loops and other figures it went into warp drive. First couple of times it happened I wondered what was up. Never saw a stunt engine break like that. Looked as though there was a particular nasty pocket of air causing sever wind up. Well, the unmodified engine isn't a stunt engine and there was no air weirdness. I think it was simply an engine breaking very hard. Quite amusing to see a PF bow it's wings when hit with the g's. At one time, I believe, the OS 32s were retimed for stunt. The resulting engine would run at a constant high rpm with a flat pitch prop. I saw at least one plane set up using this engine. But the 32 is a powerful beast. Too much for a Buster used as a stunt trainer. An LA25 would be a better match for a Buster used to fly on the slow side. Don't know how the plane would respond tho, to the slow down. Flite Streaks work when flown at a moderate speed. Good choice for getting into the pattern. Busters may not work as well. On the other hand they might. Could be you've got a tad more wing area than a Streak. But the magic George Aldrich touch is not built into a Buster.