Engine Recomendation for 120 CAP232
 

Just bought a used 120 size Hanger nine CAP232 ARF. This is my first plane of this size and am looking for suggestions on good power options. I want the plane to be able to go vertical. I am thinking of a Saito 150 fourstroke. My buddy also has a small chainsaw motor he thinks will be good (30cc I think). Any suggestions/comments?????

Welcome to RCU
 

Howdy and welcome.

I ran a ST3000 in mine-- but I'm in Denver at 6000'.

A 150 Saito isn't going to give you unlimited vertical. For that your going to need at least a 180 engine.

The Moki 180 or 210 would be great. Or even an MDS 2.18.

I'd stay clear of the chainsaw engine in this plane. It's too heavy and not near enough power for what you want to do.

Unless you put a Poulan 46cc in the plane-- now that would be unlimited vertical..

Be careful with this plane. They build out tail heavy. Mount your engine first and then locate your servos.

Servos in the tail are out of the question unless you put a huge motor up front.

Good luck with your project. Let us know how it turns out.

Engine Recomendation for 120 CAP232
 

saito 180/210 !!

Engine Recomendation for 120 CAP232
 

hi!
MVVS 26cc Glow or ignition! More powerful than a Saito 180 and quieter!


JK

Engine Recomendation for 120 CAP232
 

Thanks for the reply. I am unfamiliar with a mvss 26cc motor. can you be more specific? I did a google search and had no hits

Re: Engine Recomendation for 120 CAP232
 

If we are talking about the Hanger 9 1/4-scale Cap 232, you will be dissapointed with the Saito 150 on this airplane. Even the Saito 180 barely gives you the performance one normally expects on an airplane like this.

The general concensous is this plane is not designed for gas engines. In order to get the performance you want the engine will be much too heavy for the airplane. There are other schools of thought out there but they all stress going with gas engines designed to be light and powerfull -- usually the more expensive engines available.

IMHO, the optimum engine for this airplane is the Moki 180. This is the engine I have on mine. It is an ideal combination of power and weight. Weight for this airplane is a big deal because it generally comes out tail heavy. With the Moki 180 on the nose and the tail surface servos, RX, and battery just aft of CG, no extra weight is needed to balance. It still comes out in the 14lb range.

If you use a smaller engine (OS FX 1.60, Saito 150, Saito 180, Moki 135, Webra 120, etc) you will have to add significant weight to the nose. This will rob you of the power-to-weight benefit you will get from those engines.

If you use heavier engines (most gas engines) you will have to add weight to the tail (even with servos mounted on tail) to properly balance -- you'll end up with a very heavy 1/4-scale.

THOUGHT: Why would anyone be concerned with a heavy airplane if the engine/prop combination easily offsets the added weight? When that engine quits that airplane will drop like a wingless rock -- personal experience.

Saito 180
 

I guess I lucked out with mine, I put the battery up beside the fuel tank and used a Saito 150 and it balances spot on., two friends of mine in Southern W.Va., Welch and Princeton, have Saito 180s on theirs and the performance is anything but disappointing. I have not flown mine yet.

Engine Recomendation for 120 CAP232
 

hobsy= the saito is great and your plane will fly fine it will just not have the oomph to really bring out this planes potential.. fact

Re: Saito 180
 

Picture this:

THIS IS THE CAP WITH A MOKI 180 : Airplane is hanging on the prop at less than 1/2 throttle 2" off the ground. It starts to slide just a little bit and just at the moment the rudder touches the ground the pilot runs up to full throttle and it accelerates virtically up to 500'.

THIS IS THE CAP WITH THE SAITO 180 : Airplane is hanging on the prop at less than 3/4 throttle 4" off the ground. It starts to slide just a little bit and just at the moment the rudder touches the ground the pilot runs up to full throttle, unfortunately it continues to slide, buckles the rudder and slowly falls over to the side and crashes, with engine running full throttle. You see, the only way to get the Saito to accelerate that 14/15 pound airplane is to move in a horizontal direction, there isn't eough engine to accelerate virtically.

Now I would call that dissappointing and its the difference between the capability of an engine to manhandle 14/15 pounds of airplane. Its pure horse power, 4.1 horse power is 32% more than 2.8 horse power.

FACT: Saito 180
1) horse power = 2.8
2) 9,400 W/APC 16x8

FACT: Moki 180
1) horse power = 4.1
2) 9,500 W/APC 18x8

Now, if you never did more than simple IMAC patterns you would not be dissappointed in the Saito's performance, because, lets face it 9,400 W/APC 16x8 is awesome.

Indeed
 

Thanks Adrian and Hillja, the Saito 150 will make it far more capable than I am.

Engine Recomendation for 120 CAP232
 

Jim Hilley ...


I agree with your post...but.....where are you getting 14/15 lb.

the hangar 9 1/4 cap 232 should come out in the 12's max :o if the plane's weight were 15 lb. with a saito 150/180...it needs to be thrown directly in the trash.....do not pass go ...do not collect 200 dollars.... :(

Engine Recomendation for 120 CAP232
 

Not to mention to get even good performance with the Saito you will have to run very high nitro in your fuel and that costs. With the Moki you will get the performance on 5% nitro or you can run FAI fuel = no nitro. I run one of my caps with Moki 1.80 and the other I run an O.S. 1.60 and the Moki rules. The cap with the O.S. flies fine just not as fine as my cap-Moki combo.

Engine Recomendation for 120 CAP232
 

After spending well in excess of $1000.00 on plane, engine, digital servo flight pack, etc, I'm not about to throw my 14lb plane in the trash. You are correct in that it wouldn't be 14lbs if I had a Saito 180 instead of a Moki 180, or a 700mah RX battery instead of a 3500mah RX battery but even if I stripped all of the extra weight I'm still looking at around 12.5-13.0 pounds of airplane with a Saito 180.

I guess I could have been very stingy with my glue and fuel proofing but then I'd be picking up pieces of the airplane after it falls apart in the air.

The gist of my remarks here is for this airplane to achieve dynamic 3D performance you need to build solid and need more umph in your engine than the Saito 180 can provide. Who says that --- I say that and a whole hell of a lot of other 73" Hanger 9 Cap 232 owners.

Engine Recomendation for 120 CAP232
 

Jim, I flew last year with a couple guy's that yanked their Saito 1.80's out and went with O.S. 1.60's in their H-9 caps and got better performance, not like they would have with a Moki but better than the Saito, so I agree with you. Nothing beats a Moki 1.80 in the H-9 cap.

Engine Recomendation for 120 CAP232
 

Actually, I would expect great performance from the OS FX 1.60, except since this airplane tends to be tail heavy and the OS is a very light engine at 32ozs you have to put too much weight on the nose to balance it.

Engine Recomendation for 120 CAP232
 

WOW!!!! Great info. What a group!!!! I started this thread and have learned a TON......

I little confused though. Started doing research on the Moki and ended up talking to Dave Patrick at Dave Patrick models (they advertise selling Moki's). Apparently he desiigned this plane for Horizon. Was a little disappointed he said because it came out heavier than he intended. What confused me is that at first he said the Moki 180 might be too much motor for this plane. After some discussion it came out that my CAP232 has a 79" wingspan. He thought it was less than that and then said that there may be two versions of it and that if I had the 79" version the 180 would be ok.

Does this make sense? Is there two versions of this plane? I noticed in the above post that someone mentioned a 73" model?!?!

I am leaning towards the Moki though. Patricks sells it for $249. Is that a good deal? Haven't really shopped yet.

Engine Recomendation for 120 CAP232
 

Ya but not to disagree with you guy's but that's a bunch of BULL ****!! I have a hangar 9 1/4 scale cap 232 with an enya 1.55 and i got to tell you that is plenty enough power for a cap!! It hovers well, flips well, torque's well, and get this it tail touches well at just above 1/3 throttle. So don't give me a bunch of BULL about a 1.80-2.10 with that much power you'll rip that plane to pieces!! TRUST ME I'VE DONE IT BEFORE!!!!!!!!!!!!!!!!!!!!

Engine Recomendation for 120 CAP232
 

I'm not familiar with the stats on the Enya 1.55, i.e., weight, horse power, etc. I'm assuming its not too much different than the OS FX 1.60 which is 3.7hp and weighs 32ozs. As I've indicated above I believe the OS FX 1.60 would be an ideal engine for this airplane except for the fact that at 32oz the engine mounted on this airplane would require a large amount of lead in the nose to balance. By the time you get the lead on it you would have been better going with the Moki which is 4.1hp at 41ozs of weight. I also don't agree the Moki 180 is too much engine for this airplane. At 14lbs this airplane fits in the middle of the flight envelope for this engine. Now if your talking about a mythical Hanger 9 73" Cap that only weighs 11lbs then your probably right. I'll take what you said to heart though and keep my Moki 180 tamed while I'm flying this airplane. Another member of our club has this same plane with a Saito 180 on it and I'm looking forward to seeing the difference between his and mine.

Are you shure your talking about the Hanger 9 1/4-scale Cap? Mine has a 73" wing span. Hanger 9 also had a 27% Cap though I haven't heard much about it.

Engine Recomendation for 120 CAP232
 

I'll tell ya what Kyle the 1.80 Moki is the perfect engine for the H-9 cap NO BULL involved. I have been flying mine for almost two years and it hasn't come apart yet. Like hilleja said the plane comes out tail heavy and with the Moki and the battery up on the tank it balanced spot on. I had my cap with the moki first so I planned for the need for nose weight on my second cap with the O.S. 1.60 on it, the throttle servo is mounted on the tank side of the fire wall and the battery is up on the tank also and I moved the servo for the pull=pull forward in the servo tray that cut down on the amount of weight I had to add up front. I hate adding dead weight to a plane and if I had it to do again I'd just buy another moki. Tear the plane apart that's a good one ha !!!

Enya
 

The only Enya 155 I'm familiar with is a four stroke with not quite as much power as a Saito 150.

Engine Recomendation for 120 CAP232
 

The original version of the H9 CAP had a 73" wingspan and Matt Chapman markings.The current version has a 80" span and "Alitalia" markings. For the 80" version the Moki 2.1 is the best choice in glow.

Engine Recomendation for 120 CAP232
 

I am a little embarrased. My plane is actually the 73" version (long story). ANyway, was at a swap meet this weekend and stumbled into a Super Tigre 3250 for $35!!!! I grabbed that and will give it a shot on this plane. Everyone seams to think it will run well.

Any thoughts?

Engine Recomendation for 120 CAP232
 

If you break in that engine correctly and eventually run it low oil and low nitro you will have a good workhorse for that airplane. It is a heavy motor so expect plane weight in the neighborhood of 14-15 pounds. I had the ST-3000 on this airplane and it flew it well until I dead-sticked and plummeted into a tree -- this airplane will fall like a rock with a heavy engine like that on it. IMHO it is still a better solution than the Saito 150 you originally planned on mounting.

Engine Recomendation for 120 CAP232
 

What is an IMHO you refer to above???

I wieghed the plan last night and it seems to be about 9.5 lbs empty. The SuperTigre is 43 oz (approx 2.6lbs), that brings me to about 12 lbs. Then fuel and radio gear, not sure what that wieghs. Got a 5 cell 1850 mah 6v nicad for flight pack.

Yes, She is going to be up there in wieght I guess. Well, considering I got the plane and motor now for about $165 total, I guess I am doing alright.

imho
 

In My Humble Opinion