Slow Stick Prop Reversed

[hayofstacks]

Btw, just for fun, I threw my slow stick up on the air with the prop reversed. Actually maidened it this way. I built up a new kit because that bi-plane kit is getting a bit big for the back seat of my two door when I'm out of town.

I also hooked up the watt meter just for kicks. 149 watts with the prop the right way, 160 watts with it reversed.

Heads up power up 450 slow fly, 900kv motor, 10X5 apc prop, 40 amp hurc speed control, and some of jeffs $3 servo's. I decided to try it on several different sized batteries as well. First I tried it with the 2200 mah 3 cell. did a ground take off, starting from the sidewalk and onto the grass(crosswind). Lept off the ground in about 10 feet.

Then I tried the 1300, 1500, 1800 and a 1000mah 3 cell batteries, all that I had laying around. And believe it or not, every single one of them flew, no problems at all. Verticle was a bit lacking, but I didn't even distinguish much differance in flight times. After feeling a bit asthmatic, I decided to put a 11X7 prop on the right way, and flew for 4 hours more at the end of the day with 3 other slow stickers. My dad, and two of his freinds from work.

I'll have to edit and photoshop the video showing wattmeter numbers, the prop orientation, swapping out the prop, and the differance in performance later.

Anyome else is free to try it for themselves.

If you can't take your plane off with your prop on backwards, something must be wrong with your plane. Unfortinately, I couldn't find any of my 7.4 batteries to test this with, but, I feel that there really isn't much more that has to be said on this subject, other then don't believe everything you read on the internet.

Especially when someone falsifies claims in a video to disprove so called "experts".

[Rockin Robbins]

What kind of APC prop did you use? SF? E?

Just a wild idea, but I wonder if the more efficient a propeller is, the more inefficient it will be when installed backwards?

Like a couple of popsicle sticks glued to a sewing spool would be the same shape forward as backward. It would show no change if it was on backwards. Master Airscrew props are sort of like that. Then the APC slow fly props are heavily airfoiled. They are precisely shaped to be very efficient in the forward direction. Would that make them spectacularly bad when run backwards? It makes sense.

Oh, random thought: a 10 foot takeoff roll is NOT "leaping off the ground" for a Slow Stick. That's slow as can be.

[hayofstacks]

10 feet off the ground for a maiden flight down and cosswind at 1/2 throttle is leaping off the ground, considering the large 6 oz 2200mah battery and dragging the wheels through grass. After I brought it down and flipped the prop over, I enjoyed close to 2 hours on a single battery, just flying low and slow.

It was a 10X5 "e" prop, nothing special. Actually a bit under propped for the 450 slow fly motor. With the prop the right way, its only about 13 amps.

I could try a 10X4.7 sf apc prop later and see how it does, but I honestly doubt the results will be much different. Its pretty obvious that the op just wanted to prove he was "right" after finding out how wrong he really was.

[Rockin Robbins]

Originally Posted by hayofstacks

10 feet off the ground for a maiden flight down and cosswind at 1/2 throttle is leaping off the ground, considering the large 6 oz 2200mah battery and dragging the wheels through grass. After I brought it down and flipped the prop over, I enjoyed close to 2 hours on a single battery, just flying low and slow.

Wow! That's amazing duration. And for 13 amps a 10' takeoff roll isn't bad in grass.

Originally Posted by hayofstacks

Its pretty obvious that the op just wanted to prove he was "right" after finding out how wrong he really was.

Sorry, I just didn't read it that way and still don't. I took it as he put his ideas to the test and reported what happened, which was different from what he had predicted.

I'm running 200W at 18A and an APC 11x4.7 SF and it will take off with no takeoff roll at all. I'm not really happy with the low speed handling characteristics of the plane, I've got a pranged fuselage tube, weakened wing and broken wing mount. I'm getting the itch to make some configuration changes but haven't pulled the trigger yet. Then you post about 2 hours on 2200mAh. It's really got me thinking about a balsa wing, carbon fuselage and smaller motor.

[road king 97]

Originally Posted by Rockin Robbins

Wow! That's amazing duration. And for 13 amps a 10' takeoff roll isn't bad in grass.


Sorry, I just didn't read it that way and still don't. I took it as he put his ideas to the test and reported what happened, which was different from what he had predicted.

I'm running 200W at 18A and an APC 11x4.7 SF and it will take off with no takeoff roll at all. I'm not really happy with the low speed handling characteristics of the plane, I've got a pranged fuselage tube, weakened wing and broken wing mount. I'm getting the itch to make some configuration changes but haven't pulled the trigger yet. Then you post about 2 hours on 2200mAh. It's really got me thinking about a balsa wing, carbon fuselage and smaller motor.

I have seen a couple slow sticks made into a canard plane and they fly realy well ,there was U-tube videos of a couple flying . joe

[pizzano]

I've looked into this design as well......the builds seem rather straight forward, only my pilot skills will be compromised....lol

GWS slow stick canard

Radical RC has many interesting Stick ideas...to include canard designs!

[road king 97]

Originally Posted by pizzano

I've looked into this design as well......the builds seem rather straight forward, only my pilot skills will be compromised....lol

GWS slow stick canard

Radical RC has many interesting Stick ideas...to include canard designs!

It takes getting use to seeing the shape of it flying but they do fly well and very hard to stall. The stick would be a great flying canard if kept light. joe

[hayofstacks]

Originally Posted by Rockin Robbins

Wow! That's amazing duration. And for 13 amps a 10' takeoff roll isn't bad in grass.


Sorry, I just didn't read it that way and still don't. I took it as he put his ideas to the test and reported what happened, which was different from what he had predicted.

I'm running 200W at 18A and an APC 11x4.7 SF and it will take off with no takeoff roll at all. I'm not really happy with the low speed handling characteristics of the plane, I've got a pranged fuselage tube, weakened wing and broken wing mount. I'm getting the itch to make some configuration changes but haven't pulled the trigger yet. Then you post about 2 hours on 2200mAh. It's really got me thinking about a balsa wing, carbon fuselage and smaller motor.

I have a carbon fiber thick walled fuse. minus weight, best mod i made to my bipe slowstick
a larger motor will be much more efficient at low speeds(and average) then smaller motor. hook a watt meter to your plane and watch the amps go crazy above 1/2 throttle. they should more then double with little thrust gained, depending on prop.

[Rockin Robbins]

Thanks hayofstacks! I'm getting the itch to go with the carbon fuse and look into the Radical RC canard design. Looked on their website and couldn't find it. I sure hope they haven't completely discontinued the project.

[hayofstacks]

here you go boss.

http://www.radicalrc.com/item/Slow-S...ing-Kit-102667