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Author Topic: Just bought a Brodak Galaxy  (Read 3608 times)

Offline andreas johansson

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Just bought a Brodak Galaxy
« on: December 01, 2012, 11:36:02 AM »
Hi Guys!

I just called in a Brodak Galaxy kit on Ebay Sweden :D The question is, OS 25 LA-S or OS 35 FP-S?

Thanks
Andreas
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Offline Bill Little

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Re: Just bought a Brodak Galaxy
« Reply #1 on: December 01, 2012, 11:42:48 AM »
Try to keep the build at a fairly light level and use the OS .25LA-S.  Good flying model!

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Offline Leester

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Re: Just bought a Brodak Galaxy
« Reply #2 on: December 01, 2012, 11:45:45 AM »
Not sure if the mounting holes are the same but use a universal (clamp) style mount Brodak # BH-795 and you can use the engine you like best.
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Offline Dennis Moritz

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Re: Just bought a Brodak Galaxy
« Reply #3 on: December 01, 2012, 01:10:10 PM »
Mine has servived for years powered by various fp and tower 40s. They like power and flying fast. Slow them down and they mush.

Offline scott matthews

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Re: Just bought a Brodak Galaxy
« Reply #4 on: December 01, 2012, 01:18:52 PM »
Flew my Galaxy today, we had light winds. This plane flies with plenty of authority using the LA 25 and a 10 x 4 APC prop. My lap times are 4 to 5 seconds and this plane will turn on a dime and give you change. I liked it so much I built a second one with adjustable leadouts and a weight box this help in the handling. Good luck.

Offline Garf

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Re: Just bought a Brodak Galaxy
« Reply #5 on: December 01, 2012, 03:33:01 PM »
My second Galaxy has been smashed and rebuilt so many times it barely resembles a Galaxy. I still love it. It is overpowered with a Johnson CS. It is now flying with a small shaft Johnson 35.

Offline MarcusCordeiro

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Re: Just bought a Brodak Galaxy
« Reply #6 on: December 01, 2012, 04:07:30 PM »
I guess everybody has heard this before:
"There's no replacement for cubic inches.."

Marcus
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Offline Chuck_Smith

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Re: Just bought a Brodak Galaxy
« Reply #7 on: December 01, 2012, 04:21:13 PM »
Being the old gearhead that I am, I'll fine tune that to:

There's no replacement for displacement.

But yes, you got it right.

 
'Course, I am blessed to be around 500 C.I. Hemis with 14-71 blowers on 90% Nitro... cleans the sinuses right out!  ~^
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Offline Dennis Moritz

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Re: Just bought a Brodak Galaxy
« Reply #8 on: December 01, 2012, 04:45:55 PM »
LA 25s can howl. Friends use them in speed limit combat. Pull out the venturi, use a remote needle and bladder.

It has been the fashion of late to take a perfectly good old time combat/sport plane, stick an LA 25  or FP20 in the nose, fly on the slow side and do the pattern. If that's your interest, do it with a Skyray. They're smaller than Galaxies. A simpler build with a straight non-tapered trailing edge, no capstrips. If you're learning the beginner pattern, o.k. Good choice. Better than the Galaxy. An ARF Flight Streak with it's lightly constructed fues, put an LA25 in that, keep the stock muffler on, put in learning time for the pattern, beginner or full-- until the nose falls off. Also, a good choice. I took that route. Had a few ARF Flite Streaks. I have even seen some folks do a decent corner with these. The Brodak Streak and a stock Flight Streak or any of the Goldberg remakes by Bro do better flying fast, with power. My recommendation is let them. They are balls out fun flying at the highest speed you can handle. My Buster was an early Brodak kit, super light wood. I had a Tower 40 in that. it cranked. Needled until it shrieked. Looked like it never slowed down in a turn.

A 4 to 5 second lap, splitting the difference, is a 4.5 second lap. About right for the low side of what a Galaxy needs to turn well. Fast for a pattern. In terms of speed of flight, my experience is consistent with Scott.

These days, if I wanted a simple profile to practice the pattern, I'd build a Fancherized Twister, or one of the Brodak stunt profiles. Twisters are as simple a flapped plane as there is. If you are getting at all serious about competition build that. I have judged Beginner for many years at Brodak. I even saw a piped ship out there. Since the availability of cheap ARFs the typical Beginner flies some kind of serious stunt birdie. Often these birdies aren't trimmed that well. You might actually be at an advantage in that case, if you decide to fly your Galaxy in that company. More than likely the winning plane will be a Brodak  ARF. Trimmed pretty well. Doing a decent corner.

I am drifting around in this entry. That's what happens when you have experience. And I do have experience with the Galaxy and similar planes. I have probably been flying my Galaxy for nearly eight years. I flew the full pattern for the first time using this plane. I am still flying the pattern with this plane. A few differences between then and now. Back then, I was trying to get the Tower 40 or FP40 to run rich. That worked o.k. Now a days I needle the Tower 40 until it strieks. Fly it fast as possible. Excellent fun. My thought is, why make a tough old bird like the Galaxy into a mediocre faux stunt plane. Power up. And the plane dances. I love using the old design like that.

An FP35 will allow you versatility. Use a .265 venturi (the small FP venturi, also the size of the LA 25 insert). This will tame the engine. You can also use an extra head gasket. To give a softer break, if you are needling the engine to break, 2 cycle to 2 cycle. If your thoughts run towards trying more speed. (yeah!) Pop in a .283 venturi, needle until the engine shrieks. Fly the G plane the way it was meant to be flown. Enjoy.

Caution: watch out for that big flapper, it'll stall the plane (not always a bad thing, probably contributed to the longevity of my bird, hit the elevator too hard -- easy to do -- tah dah it dethermalizes) unless elevator movement is restricted to 20/25 degrees or so.
« Last Edit: December 01, 2012, 05:07:03 PM by Dennis Moritz »

Offline MarcusCordeiro

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Re: Just bought a Brodak Galaxy
« Reply #9 on: December 01, 2012, 06:08:09 PM »
Being the old gearhead that I am, I'll fine tune that to:

There's no replacement for displacement.

But yes, you got it right.

 
'Course, I am blessed to be around 500 C.I. Hemis with 14-71 blowers on 90% Nitro... cleans the sinuses right out!  ~^

Now, that is some serious displacement...

Marcus
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Aces High!

"There's no try. Do or Do not." - Master Yoda

"Wealth and fame, he's ignorant
Action is his reward, look out
Here comes Marcus, man..."

Offline andreas johansson

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Re: Just bought a Brodak Galaxy
« Reply #10 on: December 02, 2012, 02:34:31 AM »
thanks for your advices, I'm leaning towards the 35 fp as the Galaxy is larger than i thought and i dont think i have ever built a light airplane ;)

Andreas
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Offline MarcusCordeiro

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Re: Just bought a Brodak Galaxy
« Reply #11 on: December 02, 2012, 03:21:02 AM »
thanks for your advices, I'm leaning towards the 35 fp as the Galaxy is larger than i thought and i dont think i have ever built a light airplane ;)

Andreas

That was funny... LL~ LL~

Marcus
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"There's no try. Do or Do not." - Master Yoda

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Action is his reward, look out
Here comes Marcus, man..."

Offline john e. holliday

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Re: Just bought a Brodak Galaxy
« Reply #12 on: December 02, 2012, 07:59:18 AM »
Well,  I had to go  look it up and  the Galaxy is not that much bigger than a Ringmaster.   I mean 45 inch span and 400 square inches.  A .25 with a 10-4 or 10-5 prop should be a good combination.   Might have to fly on shorter lines. 
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Offline Bill Smith

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Re: Just bought a Brodak Galaxy
« Reply #13 on: December 06, 2012, 09:43:43 AM »
Mine flies great on a 25.
It did fly a little mushy but i added lead to the tail to move the CG back and reduced the elevator throw now its great.

Offline Bill Little

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Re: Just bought a Brodak Galaxy
« Reply #14 on: December 07, 2012, 06:42:10 PM »
HI Andreas,

I do not want to insult your intelligence when it comes to C/L or how long you have been involved.  I take that you know that the .25LA has a high rpm/low pitch (about 4" of pitch) run that will fly basically any model that the Fox .35 will fly. 

The stock .35FP is more problematic to get running consistently.  It, too, will be a high rpm/low pitch engine.  Just maybe a bit fickle.

If all you want to do is burn holes in the sky (nothing wrong with that) and want to fly FAST, then put a 9-7 prop on the .35FP and open it up!

BIG Bear
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Offline Mike Keville

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Re: Just bought a Brodak Galaxy
« Reply #15 on: December 07, 2012, 07:28:34 PM »
Well, this Galaxy (a CLC kit from the '90s) flew reasonably well powered by an Eastern-Bloc .15 Diesel (name forgotten).  Later, re-fitted with a McCoy .19, it flew much better.  This was in Kuwait, early 1990s.  9/5 prop, 10/20 fuel (local stuff) and 60' lines.
FORMER member, "Academy of Multi-rotors & ARFs".

Offline Dennis Moritz

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Re: Just bought a Brodak Galaxy
« Reply #16 on: December 07, 2012, 07:49:26 PM »
Bill, I run a bunch of FP35s, 40s, and Tower 40s. They all work. Lots more power than a 25. I don't see the point, frankly, of running a .25 on a plane like the Galaxy, which is not as effective a stunt plane as a flapped Twister. Why make the Galaxy into a faux stunt plane. (See above.) Power up and let it rip. These engines need to be allowed to run in the friendly rpm range. The best prop I have found for these engines is the 10 1/2 x 4 1/2 sport apc. Lots of power. I have also used 10x4s. If the plane is flying too fast, put in a smaller venturi. I usually run a .272, midway between the large OS .283 and the small OS .265. Jim Lee supplies very nice delran venturis, cheap, $8. The are longer than stock, which, perhaps smooths the flow. So I think. They do a 2/2 break. Add a head gasket or two if it breaks too hard.

Runaways are usually a function of trying to run the engine at too low an rpm. Trying to emulate an old fashioned 4 stroke to 2 stroke break. Well. FPs and Towers don't like to run like that. They need to be run faster. Do a search. I have detailed how I set these engines up numerous times. Bill. If we had gotten a chance to say hello at Huntersville, you could have seen my cheater Magician run with a Tower 40. Same plane/engine I flew off the L-pad in Advanced. Runs nice. Plenty of power. Good control. At the moment I have 5 planes similarly powered by these engines.

Actually the effective FP35/40/Tower 40 run is similar to an effective LA25 run. Let the engine rev up to the rpm range at which the engine is stable. It'll stay there. Usually flying with a slight 2/2 break.

Over the years I have run at least ten of these engines. Probably more. The initial experience was hard, frustrating. Bad fuel tanks. Excessive vibrations. Poor choice of plugs. Wrong prop. Mostly tho the issue was trying to get these engines to do 4/2 break. Bang your head against a wall trying to do that. You may start a flight set like that with a sweet sounding 4 stroke blubber. But, as the flight progresses, it'll heat up and run 2 stroke. What we call a runaway. The solution. Don't try to run an unmodified engine in that blubbery 4 stroke mode. Run the engine leaner, as a 2 stroke. If the engine is making too much power, go to a smaller vanturi. Add a head gasket or two if you want more of a 2/2 break.
« Last Edit: December 07, 2012, 08:11:51 PM by Dennis Moritz »

Offline Dennis Moritz

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Re: Just bought a Brodak Galaxy
« Reply #17 on: December 07, 2012, 08:58:55 PM »
On second thought I can see why someone would prefer to fly a Galaxy on a .25. A more docile airplane. On 52' to 57' lines, it would probably penetrate a fair breeze, stay out on the lines, and allow you the time to go through maneuvers. I've flown planes that way. ARF Streaks are on the light side, powered by an FP25 or an LA25, they are sweet and friendly. My preference these days is to put lots of power in nose (when I'm flying a sport plane) and boogie.

Offline andreas johansson

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Re: Just bought a Brodak Galaxy
« Reply #18 on: December 08, 2012, 06:29:08 AM »
Finally the Galaxy kit has arrived. Guess i need to hurry to get that Akromaster of the bench so I can start with my Galaxy.  :)

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Offline andreas johansson

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Re: Just bought a Brodak Galaxy
« Reply #19 on: December 08, 2012, 06:30:34 AM »
Just testing photo attachment.
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Offline Garf

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Re: Just bought a Brodak Galaxy
« Reply #20 on: December 08, 2012, 03:02:34 PM »
My Johnson CS proved too much for my Galaxy. If I were tuning up for fast combat, it would probably do nicely. I now have the small shaft Johnson 35 on mine. Perfect power level.

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