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Old Dec 24, 2011, 08:49 PM
twn Chen is offline
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Probably Caliber Hobby www.caliberhobby.com stocks this adapter, GWADP001
http://www.gwsus.com/english/product...ve%20shaft.htm

Chen
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Old Jan 03, 2012, 09:36 AM
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Am I late for the maidens of the C-130s ?


Just finished up hollowing out the foam engine housings for the 12 mm gearboxes.
Does anybody have slack wires in the cowel area for engine pull out & repair?
Or did you do something else.
About ready to glue them in with some RTV lightly. So I do not tear out wing chunks during repairs.
Last edited by cyclops2; Jan 03, 2012 at 09:47 AM.
Old Jan 03, 2012, 03:32 PM
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I didn't have any slack wire in mine and had to pull everything apart when I upgraded to larger motors. Slack wire would be a good idea.

A friend of mine just finished a quad-EDF version and flew it at our field. Now I'm motivated to get mine out of mothballs and finish it since I just picked up a NIP brushed ESC for a song.

Pat
Old Jan 03, 2012, 03:50 PM
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I am at 16 to 17 oz on a scale. Just RC parts & the foam plane parts & with a 3C 2.2 amp hour Nano tech battery.
As I recall those 12 mm GWS motors were not thrust monsters.
I should be getting about 4 oz from each motor or 16 oz of thrust total. The plane looks " draggy " ? Is it. ?

The geared motors using GWS 4" x 4" props do a static 11,800 rpm. So the takeoff speed is about 40 mph

Does that set up provide enough power for add ons like the operating cargo door.
How does your plane do if only flown on R E M ?

Rich
Old Jan 03, 2012, 03:52 PM
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Rich,

Did you say a 3-cell 2200 pack? If so, you're going to burn those motors out in one big hurry!

I flew mine with a ThunderPower 2S 1320, and it flew just fine. Not fast, but able to stay airborne without issue.

I would say go with a 2S 1300 or so pack. A 2200 will be way too heavy.

Pat
Old Jan 03, 2012, 05:49 PM
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The motor is not a GWS brush type. It is a Hyperion 12 mm in a BP Hobbies Aluminum cased gearbox of 4.14 : 1 ratio. It can handle 8.5 amps with enough cooling. I keep it at 6 amps or less in closedup scale looking cowls like ours. The motor will be 1/2 way buried in the foam housing with some airflow out the back.

They are spinning the GWS EP 4 X 4 prop at 11,800 rpm & at 2.4 amps on a 10 volt pack.
The motor is cold during 3 minutes @ WOT.
Old Jan 03, 2012, 06:48 PM
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Ah, OK. Good. Looking at the pic I couldn't tell if they were stock or upgraded.

Pat
Old Jan 03, 2012, 06:53 PM
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Here is the 1 ounce power unit with a EP 4 x 4 on it.
Old Jan 03, 2012, 06:56 PM
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Oh NO Pat.

You are warm & dry all winter.
I am at 30 to 40 F & 20 to 35 gusts. BOOOOO
High of 25 tomorrow.

Rich
Old Jan 04, 2012, 04:42 AM
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Quote:
Originally Posted by crxmanpat View Post
......................
A friend of mine just finished a quad-EDF version and flew it at our field. Now I'm motivated to get mine out of mothballs and finish it since I just picked up a NIP brushed ESC for a song.

Pat
Hi Pat,

Please tell me more - any pictures or video? Your friend's is the first flying quad EDF I've heard of. I shipped one to the UK several years ago but its been sitting in my build pile ever since. Could be I'm motivated to reach for it? Is your friend flying with the stock brushed fans (which is what I had planned)?

Seems to me that adding 4 brushless units together with four esc is going to add about $100 which I'd prefer to avoid. I don't need it to do anything more heroic than flying to scale.
Old Jan 04, 2012, 03:49 PM
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Roger

My cost is $ 29 for each motor & $ 8.50 per gearbox. X 4 is $142 .

Bigger is cheaper.
Old Jan 04, 2012, 03:52 PM
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Pat

Do you know if anyone has flown the quad with only Rudder & Elevator ? Was the control OK. I fly scale like. No stunt stuff.
Old Jan 04, 2012, 03:52 PM
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Hi Roger!

Just pics for now, but it did fly pretty well on the stock power system. No overly fast, just a tad slower then the quad prop version.

Pat
Old Jan 04, 2012, 03:53 PM
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Originally Posted by cyclops2 View Post
Pat

Do you know if anyone has flown the quad with only Rudder & Elevator ? Was the control OK. I fly scale like. No stunt stuff.
He made it 4-channel.

Pat
Old Jan 04, 2012, 04:06 PM
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VERY nice engine housings.

Thanks for the pictures.
Innov8tive.com Has shipped the props & adaptors. Great people there.

Rich


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