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Old Jan 29, 2006, 04:47 PM   #1
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SlowStick Buildup...Mild to Wild! -- Lots of updated videos and pics!

I purchased two Slow Stick gliders from towerhobbies for $21 each. I already have all the radio gear, motors, etc.

Anyone here install a Hobby-lobby 400XT brushless outrunner motor on one of these? (with the 2 cell lipo mentioned below and a 10x4.7 prop I was getting 18oz of thrust at 8.1amps when installed in a small Piper cub)

Right now I am still building the plane...stronger than stock as it will have to holdup under the extra thrust...

For the wing I epoxyed the two halfs together and replace the fiberglass wing supports with the same size carbon fiber which saved 6grams off the weight and are over twice as strong..I temp. taped them in place then epoxyed them in...after doing some research on different tape I found that a high grade of clear 3M packing take...heavier fiber enforced packing tape is not needed with CF rods.

As far as the rudder and elavator usual buildup with some epoxy applied after assembly and in between the plastic support strips...these may need some thin carbon fiber inserts but I'm going to try it out first.

Any suggestions on where the wing should set on this or just move it around to suite the CG?

Right now I am buiding my boys SS which will run a 2 cell 1000mah 15C lipo pack 2.2oz and a Castle Creations Thunderbird 9 ESC with a GWS 6 channel RX, prop will be a 10x4.7 SF.

On mine I will be using the same 400XT motor but with a Castle Creations Thurderbird 18 with a 3 cellmah lipo pack...not sure which size mah it should be for best power and long flight? It will have the same RX and maybe a 11x4.7 prop?

I am still waiting for the outrunner motor adapter from Horizon Hobbies for the two planes so I will have to wait on setting it up all the way.

Brushless Motor Mount Adapter for Slow Stick

Any suggestions or pics would be great!

Thanks,

Last edited by kctrading; Oct 11, 2009 at 04:02 PM.
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Old Jan 29, 2006, 04:54 PM   #2
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Quote:
Originally Posted by kctrading
...On mine I will be using the same 400XT motor but with a Castle Creations Thurderbird 18 with a 3 cellmah lipo pack...not sure which size mah it should be for best power and long flight? It will have the same RX and maybe a 11x4.7 prop?
...Any suggestions or pics would be great!

Thanks,
Ken
Hemet, CA
You need to drop DOWN on diameter for the 3S lipo pack. The motor just barely redlines on 3S with APC 9x3.8 or 9x4.7 SF props in static tests (OK in the air). The GWS 9x5HD draws about 1 amp less with about 1 oz. less thrust (17 oz. or so).
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Old Jan 29, 2006, 05:06 PM   #3
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Quote:
Originally Posted by Tom Frank
You need to drop DOWN on diameter for the 3S lipo pack. The motor just barely redlines on 3S with APC 9x3.8 or 9x4.7 SF props in static tests (OK in the air). The GWS 9x5HD draws about 1 amp less with about 1 oz. less thrust (17 oz. or so).
What is the max cont. amp draw for this motor? And max surge? On my old piper that had this setup in before it got eaten by a few dogs it was running a 9x6 prop with no problem on the 2 cell lipo but like you said it may be close to redlinng with another cell...I also have this motor and esc which might go on instead, 3 cell and 11x4.7 should not be a problem

1480 Outrunner and 30amp ESC

Ken
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Old Jan 29, 2006, 05:14 PM   #4
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Quote:
Originally Posted by kctrading
What is the max cont. amp draw for this motor? And max surge? On my old piper that had this setup in before it got eaten by a few dogs it was running a 9x6 prop with no problem on the 2 cell lipo but like you said it may be close to redlinng with another cell...I also have this motor and esc which might go on instead, 3 cell and 11x4.7 should not be a problem

1480 Outrunner and 30amp ESC

Ken
10A continuous... no surge rating. I've been flying mine with the three props I mentioned with a 910mAh TP PL 3S pack on a 3D 11 oz. foamy, and pack comes down just barely warm and motor practically ambient temp. I'm getting close to 15 min. flights with this style of flying with this set up. It's a good motor/prop/ battery combo for this weight class.
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Old Jan 30, 2006, 08:17 AM   #5
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Dear Ken, should you take a look into GWS brushless motor?
http://www.gwsus.com/english/product/motor/gwblm001.htm

Motor cost you $15. GWS BL ESC 15A cost you only $25.

Buy together even as low as $38. package deal!
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Old Jan 30, 2006, 09:45 AM   #6
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Get them released Mr. Lin, unfortunatly your promised product delivery time frames are not generally met.

The 400xt makes a great slow stick upgrade. 9x5 GWS Hd prop and this $20 motor is great!

Mike
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Old Jan 30, 2006, 02:45 PM   #7
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What do you guys think?

My son's plane ready to fly without battery pack: 11.4oz.
Plane will weigh 13.5oz with a 1000mah 2 cell lipo 15C rated I have on hand.
Mine will weigh 17.8oz with a 2000mah 3 cell lipo 15C rated (30Cont./50Max amps)

Ken
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Old Jan 30, 2006, 07:38 PM   #8
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Quote:
Originally Posted by pda4you
Get them released Mr. Lin, unfortunatly your promised product delivery time frames are not generally met.

The 400xt makes a great slow stick upgrade. 9x5 GWS Hd prop and this $20 motor is great!

Mike
Received the mounts today Do I bias the motor mount up or down? I would think up for more prop clearance.

Ken
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Old Jan 30, 2006, 11:15 PM   #9
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Up yes. Not only for clearance, but being off center it will add a small amount of desirable downthrust. Below the fuse has the opposite affect, adding to the SS's tendency to climb under throttle.

Edit I think I read this wrong, I meant the motor should be above the stick. 3-5 degrees of right/down may be needed. For a lower thrust setup less is needed.

Last edited by Ron H; Jan 30, 2006 at 11:29 PM.
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Old Jan 30, 2006, 11:42 PM   #10
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i bought a 400xt a few months ago, i'll never buy another motor from esskay. its the high end motor, yet the shaft cant be reversed or replaced, the one i have has a high pitched scream coming from it that makes it almost unbearable to be around and since the shafts arent reversable its impossible to firewall mount.
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Old Jan 31, 2006, 01:18 AM   #11
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Quote:
Originally Posted by kctrading
Received the mounts today Do I bias the motor mount up or down? I would think up for more prop clearance.

Ken
The mount should be oriented so that the thrust line is the same as a gearbox shaft. You didn't give any details on your plane, so can't tell much from that.
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Old Jan 31, 2006, 01:38 AM   #12
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Well I got it pretty much done except for some custom decals, adjusting and triming the servo control wires.

Yeah I over built it a little with carbon fiber in the wings, tail and elavator with tape on all the 3M tape on all the edges and over the carbon fiber...after chewing up a piper cub I learned on this one...rear .5mm x 3mm carbon fiber strip only added 1.5grams to the rear of the tail...switching to carbon fiber rods on the wing saved 6grams total...I also added one strip of fiberglass striping take to the bottom of the wing from tip to tip which added another 2 grams...so still less than if built stock.

Used a lite weight GWS 6 channel esc: 8 grams
Two RC Smart 9 grams servos
Castle Creations Thunderbird 9 ESC 8 grams
TrueRC 7.4v 2 cell 1000mah 15C lipo 2.2 oz/63 grams
Hobby-Lobby 400XT Outrunner Motor, prop saver & 9x6 APC SF 2.2oz/63 grams
Total weight ready to fly 13.9oz/397 grams

Any other suggestions are always welcome....


Ken
Hemet, CA

Last edited by kctrading; Today at 12:06 AM.
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Old Jan 31, 2006, 06:22 AM   #13
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Quote:
Originally Posted by pda4you
Get them released Mr. Lin, unfortunatly your promised product delivery time frames are not generally met.

The 400xt makes a great slow stick upgrade. 9x5 GWS Hd prop and this $20 motor is great!

Mike
First lot of GWS BL motors and ESCs were shipped out at the end of 2005.

The 2nd batch of them just shipped last weekend before Chinese New Year long vocation started.

It's pitty that you did not book your by using our Early Birds programe?
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Old Jan 31, 2006, 09:47 AM   #14
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Quote:
First lot of GWS BL motors and ESCs were shipped out at the end of 2005.

The 2nd batch of them just shipped last weekend before Chinese New Year long vocation started.
That is excellent, but I have no use for the smallish first motor, I am waiting on the 2212 and larger motors and ESC's. I have no interest in the early bird program, but I do hope you meet the dates and prove me wrong.

And don't forget GWS is about 2 years late to the brushless dance as a whole! Had you released these 2 years ago (When Himaxx entered the market) you would now own the market.

You have great products and excellent prices, but your move to mainland China has certainly slowed the release of your great products. Hopefully the bugs are now worked out.

Mike
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Old Jan 31, 2006, 11:15 PM   #15
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With a fully charged 1000mah 15C 2 cell lipo.

I think I can getaway with running the 10x4.7 apc sf prop! Once the plane gets moving it should go down further on the amps. 16.8oz of thrust per my digital postal scale.

Ken

Last edited by kctrading; Feb 05, 2008 at 12:39 PM.
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