I've got a 25% Hangar9 CAP 232 with a Moki 1.20 in it.
This is the 73" wingspan, 11.5 Lbs. ,blue/aqua/white, CAP 232 that Hanagar9
doesn't sell anymore.
Bought it used a couple years ago.
It's a great flying plane, but slightly under powered for my altitude (I'm
in Denver, CO).
So, I'm thinking about replacing the Moki 1.20 with something bigger.
If I'm gonna do this, I'd really like to go with a gas engine.
Got my eye on the MVVS 1.60 and RCS 1.80 gassers.
All reports I've seen indicate these are great gas engines.
Has anyone out there put either of these gassers in Hanagar9 CAP 232?
Anyone have any other suggestions for a gas engine in this plane?
Check out the MVVS 1.60 in RCuniverse.
I have flown both engines, and liked the MVVS a lot more.
The Moki gasser (RCS) is left to gather dust on my shelf.
If you go to a bigger engine, weight will go up as well. Also there is the
added ignition, switch and battery.
I figure your final weight will be around 12 lbs. That is just a bit too
heavy, If you plan to fly 3D. If aerobatics is your goal, the MVVS will make
a great combo.
Bob Pastorello has flown it and was quite satisfied. He abandoned the
project however, because in down figures the added weight made speed
increase too much for his liking
Wow Jim, you actually managed to fit a BME 44 into the 25% H9 CAP 232.....
How did you mount it? (Inverted I'm guessing)
How much cowl did you have to cut away?
Could you send a picture of your installation?
Thanks for the testimonial.
I flew that Cap with the old style MVVS 1.6 w/Pitts muffler. It was
underpowered, IMO. I switched to the MVVS 2.15 ( I had both), the 2.15 was
plenty of power but the weight was a bit over 14 lbs. It would do IMAC but
not hover. Landings were OK because that Cap has a biiig wing.
The best combo I've seen used a Moki 2.1 (or is that 2.2?) on FAI fuel.
Lots of power and several lbs lighter. You can mix your own FAI fuel
Bob put one together with a ZDZ 40 too. He had the pics on his web site.
He didn't keep that one long either. I wonder who has it now.
I think the newer version 1.6 with the tuned pipe might fly pretty well
but a scale purist would detest the pipe hanging on it. What we need is a
wrap around tuned can for the 1.6.
I have read all the responses and see that a lot of guy's know how to
screw up the flying characteristics of a really nice flying plane. For
one thing the power to weight gain is not worth all the trouble of
going gas it's real simple the plane is to small. I have two of these
caps, one I fly with an O.S. 1.60 and the other with a Moki 1.80 and
both will fly any way your heart desires 3-D Imac what ever your into
and I don't have to worry about adding to the tip stall problem with
extra weight that adding gas causes. Either one of them will hover at
half throttle and pull out like a rocket. If you want to go gas get a
bigger plane and enjoy it but don't waist your time with gas on the
Mat Chapman cap or any other version of the 1/4 scale. Also you will
never bring that plane in at 11 pounds with a gas engine on it so who
ever said that is blowing smoke up your hind side by saying it. By the
way I have had these two H-9 caps for at least three years so I know
the plane pretty well and it bugs me everytime I see someone suggest a
gasser for this plane it is a waist of a good flying air frame to load
it down with a gasser. If you do it you'll be in hear screaming about
the plane being a tip stalling monster because you weighted it down,
they come in heavy enough with a good size glow on them.
Yep, sure is Jim.
I see Charley also chimed in.
The BME must be some overkill. How are your snap corners with this engine :)
I suppose interesting. Bur hey, then there's the power that pulls the plane
That is one opinion. Mine weighs in at 13 pounds 8 ounces and I don't have
too much in the way of problems with it. But then a long time ago I learned
NOT to haul back on the elevator whenever things are not right. To each his
own. . .
Hey Bob, in the final analysis, I have to agree. After looking at all the
engine possibilities (gassers that is), I'd have to say the lightest, best
overall power-to-weight ratio is the ZDZ 40... but at roughly 51 ounces (and
that's without a muffler), it's just TOO much weight for the CAP.
The CAP is a tip stalling monster. That's for sure. I have the scuffed up
wing tips to prove it. I'm still trying to get used to power-on landings at
this altitude. I moved from Minneapolis to Denver a couple years ago and
I'm still not used to it). Adding an additional 32 - 40 ounces would just
be too much.
Anyhow, I actually thought about moving up from the Moki 1.20 to the Moki
1.80 (it's only 10 ounces heavier than the Moki 1.20), but I dismissed the
idea cuz I figured the fuel consumption rate would make the flight time too
short on my current 18 oz fuel tank. Heck, as it is, right now. I have to
add 8 - 10 ounces to the nose just to get it to balance... so the Moki 1.80
would fix my balance problem too.
So, I was really glad to hear that your actually using the Moki 1.80 in this
What altitude do you fly at?
What is your full throttle fuel consumption rate?
What size fuel tank are you using?
What kind of flight times are you getting?
Are you balanced on the Hangar9 recommended CG?
Did you have to add any weight to the tail on your setup?
Thanks for your input.
BTW. I did go bigger, I've also got the H9 1/3 scale CAP 232 powered by a
ZDZ 80 gasser.... fun stuff ;-)
Hi Pat our field is at the highest point in the state of Wisconsin and
that's about all I can tell you on that, I'll have to find out the
altitude. Full throttle fuel consumption is around 1 1/2 oz's per
minute but you rarely need full power with the 1.80 and I run a 20.oz
tank so it's no problem getting an 8 to 10 minute flight. I mounted
the Moki on the aluminium mount that came with the cap and have had no
problems with that. As far as tail heavy I didn't have a problem with
that on my Chapman cap because of the moki being a bit on the heavy
side, that and I mounted my battery right on top of the tank and I
actualy came out in the middle of the c.g. range. I ran dual elevator
servo's mounted in the fuse where they belong and used D.B. pushrods
and of course the pull-pull on rudder. On my other H-9 cap,it was one
of their white versions, I run an O.S. 1.60 and I have to say other
than using a little more throttle to pull out of a hover there isn't
that much difference between it and the Moki power wise but it seems a
bit better on fuel and is a bit lighter than the moki so I had to
mount my throttle servo up on the back of the firewall and also
mounted the battery on top of the tank like I did in the Chapman cap.
The trick with these caps is to keep them as light as possible
12-121/2 pounds and make sure to latteraly balance them, don't get the
cg to far back and be easy on the elevator and they will fly as slow
as you want without any worry about tip stalling. I can float either
one of them in so slow it's almost scary hehe. I read so much about
tip stalling on these caps and just kinda shake my head because it
doesn't have to be. The biggest problem guy's have is they try to
stuff a gasser in them and wind up getting them way to heavy, that and
they feel they need to have the cg back in the tail feathers some
place for 3-D and it doesn't need that either and then they try to see
how much elevator they can get and then come into here and other
forums and cry about how bad their caps snap. Sorry about that rant
but do a search and you'll see what I mean, I was amazed at how slow
these bigger caps can really fly with no problems,a lot different than
my 40 size Kyosho cap, now that's a snap monster. What a bag of wind I
am hey? So there it is my friend and if you have any other questions
just hollar and remember to latteraly balance it, my wing tips are not