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Can Doo it

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colisace02/06/2016 15:22:42
42 forum posts
3 photos

Could find how to add text to pictures but the rear wheels are just held on with U clamps and a ply support on the wing top. The front wheel is an old tail wheel simply taped on for trials. It requires quite a run and does not want to lift off when suddenly it is away. It does have a nose down stance which does not help but requires clearance for the prop and landings are a dream. My next trial will be to fit an inrunner which was on the mig from RCM&E free plan with a 5inch prop to give better ground clearance and lift the nose up.

Stephen Jones03/06/2016 00:12:48
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2627 forum posts
1500 photos

Thanks for the info and pics, Much appreciated.

I think i will try something similar , I tried To get mine ready to fly last weekend but i am still having problems getting both motors to run at the same time .

I think i will have to take one motor off and fly it with just one motor on sad.

I may try just one more time to get both motors to work if i can program my tx to operate the speed from separate channels as they will not work from a Y lead .

Steve

Kevin Wilson03/06/2016 07:26:50
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383 forum posts
13 photos

Stephen, have you tried an opto isolator on one or both of the ESC signal leads?
These should stop any interaction between the two.


Also I can see a possible interaction if the motor leads to the 2 motors are not kept seperate. Although in your model this should not be likely.

Stephen Jones03/06/2016 17:49:43
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2627 forum posts
1500 photos
Posted by Kevin Wilson on 03/06/2016 07:26:50:

Stephen, have you tried an opto isolator on one or both of the ESC signal leads?
These should stop any interaction between the two.


Also I can see a possible interaction if the motor leads to the 2 motors are not kept seperate. Although in your model this should not be likely.

Do you mean like this question

Or something else ?

Steve

colisace05/06/2016 18:16:22
42 forum posts
3 photos

Flew mine today in latest experiment. Used a 2700kv inrunner with a 5inch prop to give more ground clearance but required a small amount of weight at front. Took off great from runway and only required a small amount of extra up, flies great and now my club mates here in Spain all want one but want to try it in Depron so who knows what next is for the Can Doo?

Stuphedd05/06/2016 18:48:36
631 forum posts
327 photos

If you look though the Can doo threads , both of them you will find ref to my depron one , 1/2 the weight of the balsa one mainly due to the 1000 ma lipo , with an Axi they are fast , all flying canard and coupled ailerons , just a couple of night s to build as well , actually flew one this afternoon !!

cheers

colisace05/06/2016 20:00:45
42 forum posts
3 photos

Cheers and will pass on the information to my flying buddies who for some reason have an aversion to balsa wood.

Stephen Jones05/06/2016 21:52:05
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2627 forum posts
1500 photos

Hi,

I now have the two motors working,

I found that one of my Esc is faulty as it was hit and miss as to weather it would work or not . Their must be a dry joint on the board cause if i move the esc it would fire up.

So i fitted a new 30amp Esc , but although it would fire up it would over rev the motor causing the motor to get hot and make strange noise.

So i also swapped out the motor now both motors are running . Not done a power test yet, as it is a bit late now .

I shall do a power check tomorrow so i can determine which size of battery needs to go in .

Steve

Kevin Wilson06/06/2016 07:31:44
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383 forum posts
13 photos

Sorry for the tardy response Stephen. I could not identify the subject of your photo.
However I am glad you have sorted the problem.

Regarding your motor overspeed and temeperature problem, could this be the timing set in the esc?
whatever you, you have found a solution and I will be interested to see what result you get from your twin motor setup. It should move along nicely

 

Edited By Kevin Wilson on 06/06/2016 07:40:05

Stephen Jones06/06/2016 20:27:32
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2627 forum posts
1500 photos

Hi Kevin ,

Here is a link to the Opto board Link

Steve

Stephen Jones06/06/2016 20:31:55
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2627 forum posts
1500 photos

And i have now done a quick power test now that my Motors are working smiley.

The model weighs in ( AUW ) 1.8 Lbs.

and i am pulling 218 watts indecision.

Looks like i will have to find better motor Esc . Or try better Prop Combo .

Steve

colisace17/10/2016 15:39:42
42 forum posts
3 photos

Tried a new 3000Kv motor with a 2500 lipo in my can doo yesterday and all I can say is WOW!!!!!! what a plane this is now. Its like flying a rocket but on rails but will still fly at a snails pace if wanted and all I can say is its a tribute to the designer. Will be building another with my mods for undercarriage built in and a rudder and thanks again to the designer for giving me such fun.

Nigel Grant 118/10/2017 10:09:28
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55 forum posts
9 photos

I am building a Candoo and am at the stage of fitting in the electronic components. I havent got a lot of experience with electrics. My question is that the batteries I have bought, Turnigy 3s 2200, have a long enough lead that it looks like the ESC can go in the rear of the fuselage, obviating the need for motor extn leads but still allow the battery to be forward enough to balance. I realise it means the ESC/motor connection will end up in the covered part of the rear fuselage, but it would also mean the battery wires wouldn't be all bunched up if the ESC was further forward. Hopefully the attached picture will show what I have described. Interested in what other builders think.

pa180439[1].jpg

colisace19/10/2017 11:14:33
42 forum posts
3 photos

That is how I had my ESC connected and worked fine, once you have flown it try it with a 3000KV motor, it's fantastic.

wayne drinkwater12/01/2019 22:57:10
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132 forum posts
43 photos

Hello there from sunny NZ a club mate has given me a half finished Can Do but no plans the airframe is complete , but where should the C of G be please

Regards Wayne

Mark Kettle 112/01/2019 23:58:01
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2185 forum posts
1305 photos

Can Do C of G

Hi Wayne, I believe its 50 mm / 2" in front of the LE of the main wing where it come out of the fuselage , also it needs a up reflex setting on the main wing ailerons of about 0.12" / 3mm and the front elevators need to be set at 4mm down elevator - ( which is like up trim on this model ) .

Here's a link to some features and some flying pictures.

**LINK**

It was featured in the magazine in December 2013.

Tim Mooney13/01/2019 02:56:36
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30 forum posts
73 photos

e497d737-f19e-4510-92c5-a2c216daec99.jpegb7a214f4-b71f-4909-85ad-7e3456a64e52.jpeg

wayne drinkwater13/01/2019 17:43:10
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132 forum posts
43 photos

Thanks guys I now have something to work with, maiden net weekend weather permitting

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