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Post  akjgardner on Tue Feb 11, 2020 11:11 am

Guillows 4 channel RC conversion 02812
Guillows 4 channel RC conversion 02511
Guillows 4 channel RC conversion 02612                                                            
Building a Guillows P40 . Its getting a bit heavy. With all the rc equipment it might just be shy of 12 ounces. Is this too heavy for a babe bee ? Might have to go with a norvell .061.wings will bee fully sheeted . fuse will not, the antenna is part of the canopy hold down system, Don't know if I like that or not . Any engine suggestions would bee helpful. Thanks Guys
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Post  1/2A Nut on Tue Feb 11, 2020 12:20 pm

What is the wingspan?
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Post  akjgardner on Tue Feb 11, 2020 12:23 pm

27 7/8
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Post  andrew on Tue Feb 11, 2020 12:35 pm

akjgardner wrote:.........Its getting a bit heavy. With all the rc equipment it might just be shy of 12 ounces. Is this too heavy for a babe bee ? Might have to go with a norvell .061..........

While overall weight is important, I think wing loading is more of a consideration.  I've seen a Gentle Lady fly with a Tee Dee at over 25 ounces, but wing loading is a light 5.4 oz/sq. ft.

If the P-40 has a limited wing area, wing loading will be higher and make for a snappy airplane.  I'm not sure power would make up for high loading. One weight saver would be to set it up as A/E or R/E only.   

The plane in my avatar weighs around 20 or 21 oz. ready to fly and has 252 sq. in. of area -- around 11.5 oz/sq foot.  It flys well, but can be a handful in a spin.
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Post  happydad on Tue Feb 11, 2020 11:57 pm

akjgardner wrote:
Guillows 4 channel RC conversion 02612                                                            
Building a Guillows P40 . Its getting a bit heavy. With all the rc equipment it might just be shy of 12 ounces. Is this too heavy for a babe bee ? Might have to go with a norvell .061.wings will bee fully sheeted . fuse will not, the antenna is part of the canopy hold down system, Don't know if I like that or not . Any engine suggestions would bee helpful. Thanks Guys

What size and weight servos are you using? Why use 4 when you can use 3? I have used servos as small as 3.7gram successfully on smaller aircraft. They are apps. .75 inch x 1.0 inch x .30 inch. See photo. Can’ t add photo with iPad. Will edit edit entry with MacBook in a minute or two to add photo.
edited 2-11-20 to add photo

Guillows 4 channel RC conversion Img_0910

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Post  getback on Wed Feb 12, 2020 6:07 am

http://www.flyrc.com/wing-load-calculator/   If you can fly fast R/C the Norvel or a TD would work , i think ? You can use the calculator but i don't know hot to figure the amount of thrust you will need? here is a set up for ailerons like you would need to use  Guillows 4 channel RC conversion Ailero10 And the Plane is looking Good !
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Post  akjgardner on Wed Feb 12, 2020 4:00 pm

Thanks for the input Guys HD .. my 4 servos weigh a combined 2 ounces . the main weight is going to be in the battery. Hey Eric , I have flown airplanes in excess of 100 mph. but its been a while, thanks for the drawing , I'm using one servo per aileron with a y connection 1 for rudder 1 for elevator and one for throttle if i have a throttle.

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