Hi i have got this model sitting at home which i have started building after it has sat there for 6 months... the question i want to ask is.. is the motor supplied good enough for this aircraft, will it pull a decent amount of vertical, because i hate getting a plane in the air and find out its like some old high wing trainer putting around when someone is learning, i just want to know if this electric motor will pull this plane well? or shall i opt to install a brushless which, i was hoping i wouldnt have the spend extra money on?

My opinion: put a brushless in it. About 150 Watts should be OK.

Another option: keep it featherlight, no landing gear, no nothing, small LiPo pack, overload the motor and hope it lasts a while.

So my himark 2815 could be a good option?, if hopefully i can find a way to mount it lol.

I think you'll need a gear box for that motor. Maybe one that works with GWS stick mounts.

why dont i just run that motor straight out like i have done on a previous hyperion extra with a 6x3 prop hooked up to a pheonix 25-35 speedy and 3 cell lipo and bobs ya unlce

I have not found any real specs for himark 2815 but I guess it would fly.
My Formosa is flying on an outrunner with about 150W turning an APC 10X6 SF.

Sounds like yours would probably be faster and lack some thrust, compared to systems turning bigger props (moving a larger volume of air).

With the GWS 350 C motor combo And a 11x4.7 prop on a 2 cell 1500 mha lipo My formasa flew very well it would not hover but it would easily loop from level flight Try it for a while Run the motor till she dies then upgrade to a brushless

Are we talking about the Formosa II here? I have one on order and am trying to figure out what the battery compartment dimensions are so I can pick up a battery for it. Hobby-Lobby is having a sale on lipos (polyquest 20C). Anyone know the battery compartment dimensions?

Carl

I flew my 1st Formosa with stock motor but had to change to 6.6 gearing with 12x6 prop to get some decent performance and that was with 8cell nimh pack.

For my current (3rd) Formosa, I'm now using a himax 2025 with 4.4 gearing and 9x6 prop. 3 cell 1320lipo. no problem with vertical with about 30 oz thrust and a 16 oz airplane. it gets out of sight in no time. Great little airplane.

I'm going to fly the Formosa II with same motor but the 6.6 gears and 12x8 prop, It should be ready next week.

We are talking about Formosa, which is smaller than Formosa 2.

GWS recommends their own LiPo for Formosa 2, as a minimum:
11.1V, 2200mAh
86x53x16mm / 3.4x2.1x0.6 in
137 gram / 4.9, ounce

... it is easy to cut foam ...

I'm was running my formosa 1 on an e-flight 400 outrunner . Flew great until I had a brain fart and hammered it in . This is a great combo . Quiet and powerfull . I'm told that that motor isn't big enough for the formosa II . So I'm going to stick with the on.

a simple upgrade is the eflite park 400 brushless, which will fit in the stock gearbox. Coupled with a three cell prolite 1320, you will have a rockin' Mosa.

On my Formosa II I'm using www.awlhobbies.com $35 Art-tech 3800 brushless motor with gws gearbox included, also their 30Amp brushless esc (auto lipo cell count detect) $30. 2000mah 8C 3 cell lipo pack from www.commonsenserc.com two pack deal for $35 (yes $17.50 each). Using APC 11x4.7 prop (GWS also works well). Pack does not even get warm, plane will vertical until out of sight. Fun flying plane. Nice and light, floats on the air with no power.

Carl

does anyone know the empty weigt of the formosa I? with no motor or electronics. Thanks

got my formosa a few weeks ago and pretty much done with the build. i just need 3 servos and it'll be ready to fly. as of right now it's at 11 ounces with plane, brushless motor, battery and reciever. it should come to about 12 ounces with everything else.

What motor/ESC/battery/prop are you using?

Himax 2808-980 110 watt brushless motor. CC10. 3 Cell 700 mah lipo. 10X3.8 Prop.

Sounds like it should work. Your Formosa is pretty light.
- If the 10X3.8 prop is too slow you could go for a 9X5 (Formosas often "prefer" to fly faster than 3D planes).
- I think you may be close to what the Phoenix 10 can handle. Probably you should not fly at full power all the time.

yea it's pretty light. this exact setup worked great in my GP Reflection at 11 ounces. i'm sure it'll do just fine at 12. i'm gonna try to 3D this thing at this light weight. I modified the elevater so that i have more surface area. we'll see what happens. i still need a few more parts and it'll be ready for it's maiden.

I have seen a Formosa with stock surfaces hover, so it can be done. I suppose it is not an ideal 3D plane: it seems to be happier doing smooth "pattern" style aerobatics.

--- I did not mean to hijack this thread but half the posts seem to be mine anyway ---

I have not yet made up my mind about when I will get my second Formosa... when I do, I'll probably try to make it look nicer and fly faster. Some people have done pretty impressive modded 'mosas, so I already have some inspiration to start from.

has anybody tried flying the formosa with a direct drive outrunner set up? if yes what motor, battery, prop combo?

I have a HET Typhoon 15/10 outrunner on mine: APC 10X7 SF, and 2S battery (2400mAh, which is too much really). This is not all that powerful but it would be much hotter with 3S and 9X6 prop.

I have seen one on an AXI, but do not remember which one it was.

Just give it 150W, or so, and spin a 9" or 10" prop.

Just getting back into RC and loving this new Electric tech.

I have flown a Charger RC and GP Turmoil and haven't really found flat foamies to my liking.

Just started with a 'mosa which is more my thing.

I am running direct drive outrunner and am using the GP 35-30-950 with a 9X7.5E or 10X4.5SF prop. Both give near unlimited vertical (limited only by my thumbs). Built a simple box mount to bolt to.

I can cruise around at 1/2 throttle with loops not requiring much more throttle. As expected the 9" is faster and better in higher winds. The 10" gives better vertical but more sensitive to thrust settings which I am working through.

Personally, I like the higher thrust as I prefer more 'box' style aerobatics and want to try this 3D thing. Still plenty fast with the lower pitch prop. This is the fastest rolling plane I have ever flown. I am estimating at 3 rolls per sec- just a blurr.

I get 8 to 10 min of mixed throttle running on a GP 1500mah 3S lipo and 18A CC Thunderbird. Can't complain with that. Anything larger would be a very tight squeeze in the batt compartment. Balanced bang on with the servos in the tail and 3s pack at the rear of the compartment.

AUW is 17.7ozs with Futuba 124rx, 2- S3110m, and 2 - HS-55 in the wing (now swapped for S3108m). This is heavier then the standard motor build but I have way more power then it needs. This motor is recommended by GP for their planes weighing in over 25oz.

I did find that CF is really needed to keep flex at bay. I use it on the just about every part and it really makes the plane more rigid. Will still take the bounce on a less then perfect landing but rigid enough to fly quite true aerobatics. Again, pilot limited at this time.

Really enjoying this plane.

Jerry

Got a question for all of yall:

Recently crashed my 'Mosa which was setup with a Himax 2015-4100, 5.33 Gears, a 9x7 prop, and 11.1v 1320 pack.

Finished rebuilding the plane, but the motor was toast. I have several GWS gearbox's laying around, both C and D gearing, and a Park 400-4200 inrunner from Eflite.

I understand that this is the same motor as the Himax 2025-4200. Who else has used this motor or has motocalc?

I need a power setup for this plane. I would like to still use the 1320 packs I have for lighter weight and quicker charge times. This would mean that I need a power setup that doesnt exceed 10-12amps.

I also have some TP2100 packs as well, but they are heavier.

Can anyone give me a gear/prop combo that would work well for a 10-12 amp output and another for a 18-22amp output if I want to use the 2100 packs?


Thanks for the help!

hi guys I just picked up a Formosa and the and someone wrote 30?on it dose this mean amps and the motor has no markings on it did the Formosa come with any stock gear or was it a arf? Thanks guys o ps can I post picks on this site I'm a newby