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Old Feb 07, 2012, 12:11 AM
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Originally Posted by mcnowhere View Post
Have read thru the build log a couple more times and not seeing where to set the wing? I scaled down the plans to make it from $tree board.
hi
see the last photo and note on post #7 of this thread...

the leading edge sits above former F2 and the trailing edge above F3.
former F2 is 5" from the front of the fuselage


David
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Old Feb 07, 2012, 10:59 AM
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Can anyone clarify if the 6mm dowel rod for the leading edges and etc is balsa ?
I just attached a spruce dowel to my leading edge , then realized that that might be an issue .

First build ever for me .. so far i am having fun .. its taking me way longer then i would have thought lol


thanks
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Old Feb 07, 2012, 11:18 AM
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Quote:
Originally Posted by jfulton View Post
Can anyone clarify if the 6mm dowel rod for the leading edges and etc is balsa ?
I just attached a spruce dowel to my leading edge , then realized that that might be an issue .

First build ever for me .. so far i am having fun .. its taking me way longer then i would have thought lol


thanks
you attached the right dowel.. it is not balsa

oh.. standard time for building a wot next ready to fly is.......

build it on saturday... fly it on sunday morning!

David
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Old Feb 20, 2012, 05:35 PM
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Prop Size

Hi

I am new to electric power flight. Fly gliders normally but was looking for an electric plane to build and have started constructing this model. What size prop would you recommend for model with a 2200kv brushless motor with 1000mah 3cell lipo.

Regards
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Old Feb 21, 2012, 11:25 AM
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Bristol,UK
Joined Feb 2007
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A 6X4 prop is standard for a 2200kv motor but your motor is better suited to a parkjet
You should be looking for something in the 1200-1500 kv size so you can run a larger prop.
Have a look here for newbies guide to RC electric power systems
http://giantcod.co.uk/forum/viewtopic.php?f=15&t=267 Part 1
http://giantcod.co.uk/forum/viewtopic.php?f=15&t=268 Part 2
I use this motor in my Ugly Stick
http://www.giantcod.co.uk/cf2215-120...-p-403800.html. Cheap, durable and powerful.
Andy
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Old Feb 21, 2012, 12:55 PM
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Quote:
Originally Posted by tko3 View Post
Hi

I am new to electric power flight. Fly gliders normally but was looking for an electric plane to build and have started constructing this model. What size prop would you recommend for model with a 2200kv brushless motor with 1000mah 3cell lipo.

Regards
hi tko...

welcome to the wot-next club! your choice of motor is a bit over the top but it will work just fine..
the originals are way overpowered with the 1800kv i fitted and i rarely use full power.. they take off quite easily at just over half power so yours will be overpowered too... it should not be a problem!

i use 8 x 3.8" slo fly prop on mine with a 30 amp esc you could try that as a starting point i use a 7 x 6 e on the same motor in my sea dart.. (and it howls like a banshea) so they will run a range of props

i would recommend you use a soft prop mount/ shaft saver to mount your prop to the motor as this will save a lot of damage on landing.

any questions? feel free to ask

David
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Old Feb 21, 2012, 01:43 PM
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Sorry to disagree with you David especially as this is your thread but I think that even a 7x4 prop would be too much for a 2200 kv motor unless it's a monster like my 120 gram NTM Prop Drive Series 35-36A 1800Kv motor that is rated at 65 amp max!
Here is Dr Kiwi's thread on a 2200 kv motor http://www.rcgroups.com/forums/showthread.php?t=1506550 and he agrees that a 6x4 is about the max. An 1800 kv motor would run something like a 7x4 or maybe a 7x5 with throttle management. It all depends on the esc & lipo capabilities.
Andy
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Old Feb 21, 2012, 03:37 PM
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Quote:
Originally Posted by tko3 View Post
I am new to electric power flight. Fly gliders normally but was looking for an electric plane to build and have started constructing this model. What size prop would you recommend for model with a 2200kv brushless motor with 1000mah 3cell lipo.
As you can tell from the guesses you're getting we need to know more about the motor you're planning on using before recommending a prop. Giving only the Kv tells us almost nothing.

Steve
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Old Feb 21, 2012, 04:20 PM
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Hi Guys

Thank you for your responses. Sorry I made a mistake with my motor size it is a 1200kv ordered from this site :

http://www.giantcod.co.uk/epower-221...tor-p-289.html

Do you think the Propeller: 9x4.7(slow) would be OK for this model?

Regards
Terry
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Old Feb 21, 2012, 04:45 PM
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Yes
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Old Feb 21, 2012, 04:50 PM
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Quote:
Originally Posted by headlessagain View Post
Sorry to disagree with you David especially as this is your thread but I think that even a 7x4 prop would be too much for a 2200 kv motor unless it's a monster like my 120 gram NTM Prop Drive Series 35-36A 1800Kv motor that is rated at 65 amp max!
Here is Dr Kiwi's thread on a 2200 kv motor http://www.rcgroups.com/forums/showthread.php?t=1506550 and he agrees that a 6x4 is about the max. An 1800 kv motor would run something like a 7x4 or maybe a 7x5 with throttle management. It all depends on the esc & lipo capabilities.
Andy

sorry but i just assumed tk03 he had bought the same case size/power output as the 1800s i had used in the prototype wot next and that would be ok on an 8 x 3.8

i actually use 8 x 3.8's on a couple of my smaller case size 2200kv motors in my foam shockies... albeit on 2s

thats the problem with generalisations eh!

with the 1200kv he has bought....

not much in it between an 8 or a 9 x 3.8sf.. 50g of thrust for an extra amp of draw

what size of esc have you bought?
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Old Feb 21, 2012, 05:09 PM
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I have a 30a esc
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Old Feb 21, 2012, 06:10 PM
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Hey guys, I am thinking of building this with Dollar Tree foam board (paper removed). I have some turnigy motors in 1500kv and 1700kv on (8x4 for 3s and 9x5 for 2s). Would this power be adequate? My wing span would be 30" due to the max width of DT foam. What type of Kfm wing would you reccomend? I was thinking Kfm2 or 4. Would I be better off folding it over and doing a traditional airfoil?

I'm looking for stable and easy to fly. This will be a trainer for my Dad who has been "hit" and "miss" on some of my other planes.
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Old Feb 22, 2012, 06:56 AM
who put that tree there
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Quote:
Originally Posted by tko3 View Post
Hi Guys

Thank you for your responses. Sorry I made a mistake with my motor size it is a 1200kv ordered from this site :

http://www.giantcod.co.uk/epower-221...tor-p-289.html

Do you think the Propeller: 9x4.7(slow) would be OK for this model?

Regards
Terry
i use the same motor as this one on a me109 combat.
8x6apc prop
118 watts at 11.5 amps.
1500 3 cell lipo.
flies like a rocket, so wouldnt be no prob on the wot next
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Old Feb 22, 2012, 11:28 AM
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thanks Dazza...

the wot next will fly on a wide range of motors

David
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