Engine help for 1/4 scale Cub
 

Gentlemen, I need some advise on an engine for my 1/4 scale J3 Cub It is a clipped wing, the kit was by SIG. It has a Kalt G-22 in it and I was told by the previous ower it flew scale but was a little under power. So I would like to replace it with something newer I have been looking at the 23cc-26ccelectrnic ignition models by Zenoah, RCCR and Fugi. Can anyone tell any of their experiences good or bad with these models or maybe something else out there you guys could recommend. The cub weighs in at 19 lbs. with out radio or fuel. Thanks guys.

RE: Engine help for 1/4 scale Cub
 

I have a 1/4 scale cub with a full wing on floats. I have a 26cc RCCR and it has more than ample power. Takes off water on 1/2 throttle and flies on 1/4 throttle. I'm not endorsing RCCR as there are many good engines out there. I've just had good luck with mine.
I've never weighed miy Cub but I don't think its over 15 lbs. One thing for sure, you will be happy with gas over glow.
Hope this was of some help.
K.O.

RE: Engine help for 1/4 scale Cub
 

KO what size prop are you using, How long have you had it and do you know the of hours or flights you may have. Do you flip start or use an electric starter.</p>

RE: Engine help for 1/4 scale Cub
 

I'm running a APC 17 X 8 prop. (do not use a wood prop. The water chews it up.) I've had the Cub for 2 years and have about 5 hours on the engine. I hand flip for starting. I only fly it 2-3 times a year so after setting for a long time it takes about 6-8 flips with choke on till it pops, then 3-4 flips with choke off and it starts. When the engine is restarted on the same day it starts much quicker. For me the whole thing about the Cub is landing and taking off on water. If it didn't have floats I wouldn't have it.
Caution.... Cubs do not like wind especially mine because of the full wing. Its easy to flip over in winds above 10 MPH.

Hope this was of some help.
Have fun

K.O.

RE: Engine help for 1/4 scale Cub
 

DLE 30? I've been helping my flying buddy with his 1/4 scale Hangar 9 super cub and it flies like a champ with a G23. But it is probably a few pounds lighter than your Cub. I've seen a couple of the Kalt engines some years ago and with the right prop they seemed just about as powerful as the more modern Zenoah engines. Try an APC 16X8 on it.

RE: Engine help for 1/4 scale Cub
 

2T petrol engine is not for plane like this. Dont be funny mate. You donw want to see "yellow grass cutter" on the sky. Its suppouse t o be slow witn 4T engine. I have 2.8m span yellow CUp with OS 120SE,

RE: Engine help for 1/4 scale Cub
 

Guys thanks for all the advise i'd like to try the new DLE 30 but i think it would be a little to much, so I have decided to go with the CRRC Pro 26 ei  I think this will be more then enough to get my Cub aound. Thanks again and will be back soon.

RE: Engine help for 1/4 scale Cub
 

I think you made a good choice. You'[ll have more power than you need for normal flight but extra power is there if you need it. If you have someone that can alter muffler you can get it all under the cowel with out holes in the sides.
Good luck

K.O.

RE: Engine help for 1/4 scale Cub
 

I have the H-9 big Cub with the CRRC 26cc. It flies great with an 18x6. Only issue is that I cannot hand start it after an hours' running time. Have to use a starter. Hopefully it will hand start eventually. I was told that it would. No other issues with the engine but that one.

FYI.

RE: Engine help for 1/4 scale Cub
 

DL 30 new rear carb version, perfect motor for a sig cub. The sigs cowl is smaller not quite to scale such as a balsa usa cub. A g 26 causes you to have to grind to much cowl away, but that new 30 DL I thinK would be a fine combo. I ran my old sig cub with an OS 108, did a good job. 14 lbs

RE: Engine help for 1/4 scale Cub
 

This may be a good choice.

http://www.rcuniverse.com/forum/m_88...tm.htm#8862472

SunDevilPilot

RE: Engine help for 1/4 scale Cub
 

I'm currently flying my Cub with the Syssa engine but will be changing it to the DLE 30 soon. The Syssa is a great little engine but I want to try the DLE also.

RE: Engine help for 1/4 scale Cub
 

I own a dl 50 and a 111, also a crrc pro 50 and a crrc 26.
The Dls have always run like a dream and have needed no work after 3-400 odd flights between them.
The crrc are a very different matter, neither have ever been hand 'startable' the 50 never made it into the air, on the first few bench runs it ate the front main bearing damaging the piston,liner,front seal, it is not worth repairing and not worth sending back to China.
The 26 managed about fifty flights before the compression started to tail off. strip down revealed a chrome bore that could be scratched with a finger nail. If you gave me a crrc I would sell it, if I was not allowed to sell it, I would not fit it to an airframe.
Yes a four stroke would be the ideal mill for a cub, but not one of those silly glow things that spews oil all over your airframe and costs a fortune to buy and run.

RE: Engine help for 1/4 scale Cub
 

 I've purchased the RCCR Pro 26, but now am thinking may be I should have waited a while. The DL30 with side exhaust would be ideal it just a little more than I want to spend. I know you only get what you pay for, I dont like the thought or aggrevation of not being able to start it or having to use an electric starter to get it going. A new engine with hassles isn't worth the savings, i go to the feild to escape and relax not get all worked up. Thanks to everyone for your inputs.

RE: Engine help for 1/4 scale Cub
 

I would.t worry about the CRRC 26. Mine runs like a champ in my Cub. I've always hand started mine.

K.O.

RE: Engine help for 1/4 scale Cub
 

iI HAVE A CRRC-26 ENGINE THE IGNITION THAT CAME ON IT IS CRAP REPLACED WITH A RX EXICEI IGNITION RUNS AND STARTES RIGHT UP BUT STILL HAVE TO USE A ELECTRIC STARTER BEFOR IT WILL START, SEEMS LIKE SOME OF THERE ENGINES JUST HAVE LOW COMPRESSION AND WILL JUST NOT START BY HAND YOU GET WHAT YOU PAY FOR

RE: Engine help for 1/4 scale Cub
 

Something isn't right here.....Sig cubs are nothing but sticks, a few formers and covering.
How could a clipped wing cub weigh 19 pounds?? And.....a 26cc engine flying a 19 pound airplane is possible but, .......what a pig. You would be at stall speed all the way around the patch. Is your scale accurate?? I think you should re-verify your weight. If you are actually at 19 pounds then it must have 5 pounds of epoxy stuffed in there somewhere.

19lb airplanes usually run 40-50cc engines...........even cubs.

My hangar 9 cub has a Brison 40cc on it and its perfect.

RE: Engine help for 1/4 scale Cub
 

Several large CUBs around this area ranging from the older Hanger 9 100", SIG and Balsa USA CUBs. All seem to be in the 15 to 17 pound range. 19 wouldn't be out of reach if a guy really detailed one.

I'm currently flying my older 15 to 16 pound Hanger 9 CUB with a DLE 30 and it seems to be the perfect combination. Plenty of power and almost unlimited vertical climb .... will easily do knife edge loops, etc. Flew the same plane before with a Saito 180 and a Syssa 180 .... the DLE easily outperforms either of these powerplants and still fits in the cowl without any side cutouts.

I have (2) Brison 2.4s but I'd think that would be a bit large and heavy for one of these CUBs. The DLE 30 comes very close powerwise though the 2.4 remains one of my favorite engines.

RE: Engine help for 1/4 scale Cub
 

Actually it balances perfectly......I have a 6 volt 2400mah Rx battery and a 4.8 volt 2000mah ignition battery under the shelf behing the back seat. The plane weighs about 15 pounds dry. Thats why I can't believe a Sig clipped wing 1/4 scale cub could possible tip the scales at 19 lbs. I would have guessed 12 - 13 lbs depending on the motor used.
A Saito 125 or a Zenoah 20 EI should be perfect for that weight.......but 19 lbs......[X(]

RE: Engine help for 1/4 scale Cub
 

I have the Sig cub clipped wing and I'm running an OS160 twin. Sound and scale appearence was important to me. Can't beat it. I love it.

RE: Engine help for 1/4 scale Cub
 

Hey Guys
I have a 1.80 F/S on my 1/4 scale clipped Cub, it flys it very well and plenty of power for loops ,rolls, inverted flight.

RE: Engine help for 1/4 scale Cub
 

Foow-up on my previous post:

The CRRC 26 of mine was wayyyy off on the timing. It came from the factory at 48 degrees btdc. I re-set it to 28 degrees btdc and it runs fine now. JediJody advised me to check this i9ssue in another thread. I now check ALL my new gas engines.

RE: Engine help for 1/4 scale Cub
 

RE: Engine help for 1/4 scale Cub
 

I have to agree with roknHS about the weight. I fly the Aeroworks 50cc S2 Sport Cub that comes in around 19-20 lbs. I am running the DLE 55 on the business end.

RE: Engine help for 1/4 scale Cub
 

I must be doing something wrong..I am flying my Sig 1/4 Cub with the new DLE 20...perfect...sure I have to fly it on the wing..but thats what I got the Cub for...circuits all day long at scale speed and the challenge of making it look real. Only thing I would change is to get say a JTEC wrap around muffler to reduce the amunt of cowl I had to cut out with the standard muffler.