what kind of planes are people using for the bcma 40cc engine? what's the all up weight and how does it perform?

i'm thinking of matching up this engine with the pacific aeromodels 25% katana. the advertised weight of the katana is 12 lbs. but that's with a large glow engine. with gas, i think it will be closer to 13 lbs.

this will be my first gasser. do you think this will have enough power for 3d for this plane? i need something that will pull out of a hover with authority, and for down low hovering without worries. if this engine really produces 20lbs of thrust, it'll be a little less than 2 to 1 power to weight ratio.

does anyone actually have this engine and can comment on it?

my other alternative is a DA 50cc engine, but it's about twice the price! and it'll be heavier too (dont know by how much though....)

QQ Yak

72"

12 - 12.5 lbs

2 gallons thru the engine, pulling better than a saito 180

speedbird

boosted180,

I have the new Somenzini YAK 54S with the Brillelli 40cc gasser on the business end. Nice fit and perfect match.

boosted 180;
I am flying a Hanger 9 Extra 260 (78") at 14.5 lbs. using a Brillelli 40cc EI and it has plenty of power.

Gaines

gwulle, when you say, "plenty of power", do you mean enough for 3d? will it pull out of a hover with AUTHORITY?

i know of a guy locally who flies his extra 260 with a DA 50 and it's a great match, so i'm surprised to hear that your 40cc is enough power for the same plane.

what's the weight of your brelleli, including muffler and ignition?

also does anyone know how much the muffler and ignition for the DA 50 weigh? the engine itself is about 3lbs (48 oz).

Funny,

All this time I thought you guys were calling the 40 a boosted 180, (which it is) IMO,

yet "boosted 180" is 'boosted180'



So now, Boosted 180;
The 40 pulls my 12.5 pounder with a 1 to 2 second delay upwards, but the engine still hasn't been broken in entirely. Then it has authority.

My guess is at 14lbs it may start to have trouble. But there is always the 60 out there now also.

Speedbird

I had my BCMA 40CC engine on my Giant Big Stick at 14lbs and it hovered at 1/2 throttle with about 2 gallons through it and a Zinger 18x10 prop.
-michael

da 50 ignition = 3.9 oz da pits muffler = 4.9 oz

Brillelli 40cc with standoffs, muffler, and CH EI is 51oz. 3lb 3oz.

I dont see 13 pounds being a problem for this engine at all.

the specs on the brillelli and bcma 40cc engines sound exactly the same.....

so i've narrowed it down to either chosing the brillelli 40cc or 46cc for my 25% katana. (the specs and reputation of the DA engines are awesome but they're just so darn expensive!)

with the 40cc, i'm estimating that the ready to fly weight will be around 13lbs.

for the 46cc, it'll be around 14lbs.

i definitley want to go as light as possible, but on the other hand, i really dont want to get stuck again with an engine that's just "marginal" for 3d. i've had too many planes with barely just enough power to hover (abut 3/4 throttle stick), and found myself thinking, "damn, i shoud have gotten the next engine size up!" i want something that will hover at 1/2 throttle or less and rocket out of a hover at full throttle.

this time around, i think i may just have to sacrifice gaining another pound to get more power.....

Actually the 46 is much lighter than quoted on the site. It has went through some changes and the weight is down to within 5oz or so of the 40. Either would do a great job and on a 13 lb plane the 40 would 3D. BCMA will be the only one selling the 40 soon. We are going to concentrate on the 46 instead. The 46 would be insane power for a 13-14lb plane. A DA 50 would be overkill to say the least

Well for the extra money an oz. (only 5) I would go with the 46.. I think it will really impress you since I had it flyig with great power on a 16 pound plane and it would 3d 2 pounds less would be amazing

I have my BCMA 40cc in a Goldberg Extra 330, which is about 12.5-13 lbs. Initially, when it was first breaking in, it would hover and pull out but slowly. Now, however, since I have put about 2 1/2 gallons of fuel through it, it pulls the plane out with some serious authority. I can hover at about 1/2 throttle, and when I hit full, it just goes and goes.

The best part about breaking these engines in is that you just go out and fly to do it!

It would be a great match for your Katana, good luck.

So about 56oz all up, without battery? I saw 51oz quoted elsewhere here for the 40cc, is that right? That is a great weight for the power and price. Now I have another engine to think about...

Edit: Duh! The 51oz weight is several posts back in this thread... Not enough caffiene yet this morning, I guess.

Mark

i just picked up my 25% katana this week.

i've decided on the brillelli 46cc. poco242, how do i get the engine? are you guys taking orders yet or do i have to wait until after the 25th? i'd really like to get this project going as soon as possible.

thanks!

You will love that Brillelli 46cc. I have mine on a Ultra-RC Giles and it makes for a great package. The motor is as Scott says, "3lbs - 8oz". I have proped mine with a NX 20x8 and that is all the more I will put on this setup. Later, when I move this to another plane I will probably move up to a 22x8.

P-man

I'm going to be using a Brillelli 46 in my 27%, 12lbs-13lbs Extra. That is, when it is finished anyway. Which requires that I start on it, which I have not done yet. []

what kind of servos are you guys using? this is my first "large" plane and i'm a little undecided.

i'm thinking servos with about 160 oz-in. of torque for the rudder, at least 80 each for the elevator (2 servos) and about 100 oz-in for the ailerons?

also, what mah and voltage battery will i need for the ignition?

for the receiver/ servo battery, i'm thinking of using 2 1000 mah 4.8V ni-mh packs hooked up in parallel with 2 switches for saftey. i've heard from some people that you should use 2 receivers also, and others say it's ok to use just one but have 2 switches.

Your choice of servos sounds perfect to me, especially for 3D maneuvers. In my airplanes, I use a 2100 mah 6V NiMH pack for my receiver/servos, (Futaba PCM receiver, Hitec servos). For the ignition, I use a 2100 mah 4.8V NiMH pack. The way you describe your battery set-up, it sounds like you're hooking up two batteries to one receiver, which would require a voltage regulator. If you use a higher mah battery, you can avoid needing two batteries and a regulator.

For those of you that want to buy battery packs for less, try Ebay. There's a company on there called Battery Island, or something like that. I bought three 6V packs for $17 + shipping. They have worked flawlessly for me for quite some time now.

Just give me a call. 320-249-7420. Thanks, Scott

I flew a 14+ lb GP 25% Yak-54 with the BCMA 40. Enough to hover and pull out (once broken in) with a 20x8 prop, but it did not pull out with any authority.

Hey guys. I just got a SPE 40 but it does not have the rxcell ignition instead it has the one with the black box. I have read that they used to have issues while back. What kind of ignitions are you running with your SPE40?

I have read most people are using the CDI to replace the black, no label ignition that comes with these engines. I do have the original black ignition on mine and have had no problems, but there are a lot that due have issues. Here is a link to the updated version of these engines and the better ignition. Hope this helps.

http://bcmaengines.com/BCMAProducts.htm