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Author Topic: Prop Rotation  (Read 14374 times)

shimsham

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Prop Rotation
« on: July 15, 2011, 07:11:56 PM »

Been out with the Jules Verne to maiden here,having a bit of trouble with the prop rotation, firstly the throttle stick is working backwards its a Planet Tx 5 which i changed the spring for the throttle whether thats caused a problem[Mode2]
So i am getting slightly confused to which way the props should rotate ie Forward/Backwards i have been told with having two rudders can have a bearing on the rotation,any help would be appreciated.

Cheers
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pugwash

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Re: Prop Rotation
« Reply #1 on: July 15, 2011, 07:24:54 PM »

Albert - I havent got round to using mine Planet 5 yet as I havent started to build it is going into
but you could surely reverse the servo on that little panel - someone recently did a review of the 5
if you look it up you should be able to sort out your problem

Geoff
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shimsham

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Re: Prop Rotation
« Reply #2 on: July 15, 2011, 08:20:50 PM »

Geoff. Do you mean the throttle [change that round] at the moment looking from the back the left prop is going anti-clockwise [showing a red light on the fuse board] and the right prop going clockwise showing a green light on the fuse board.when you pull the stick back for reverse both the props go clockwise [which way do they rotate in reverse by the way]


Colin
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triumphjon

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Re: Prop Rotation
« Reply #3 on: July 15, 2011, 08:44:34 PM »

normally on a twin motored model the props should rotate in opposite directions , both of my huntsmans are contra rotating , when veiwed from behind the model the left prop rotates to the left ( anti clockwise ) while the right prop is turning to the right ( clockwise ) . do you have a separate speed controller for each motor ?
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Tug-Kenny

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Re: Prop Rotation
« Reply #4 on: July 15, 2011, 08:51:18 PM »


It does sound like your RH prop is not reversing.  Are they controlled by ONE stick ?  In which case the speed controller for it is failing to go backwards.

ken



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shimsham

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Re: Prop Rotation
« Reply #5 on: July 15, 2011, 09:00:04 PM »

Ken. Yes they are both on one stick,also what is causing the red light on the fuse board to come on when going forward,i hope its not esc for gods sake or that will open a can of worms.
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shimsham

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Re: Prop Rotation
« Reply #6 on: July 15, 2011, 09:07:07 PM »

normally on a twin motored model the props should rotate in opposite directions , both of my huntsmans are contra rotating , when veiwed from behind the model the left prop rotates to the left ( anti clockwise ) while the right prop is turning to the right ( clockwise ) . do you have a separate speed controller for each motor ?

Jon. No i dont have a seperate esc for each motor,could you just tell me which way they rotate in reverse is it the opposite of forward.
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craftysod

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Re: Prop Rotation
« Reply #7 on: July 15, 2011, 09:24:47 PM »

Albert,
Are you using a l/h and r/h props or both same.
Some fuse boards show green light for forward and red for reverse,because of the poliraty of the current
Mark
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shimsham

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Re: Prop Rotation
« Reply #8 on: July 15, 2011, 09:36:11 PM »

Hi Mark. Yes  one is LH [red light] and one RH [green light] thats going foward.
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craftysod

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Re: Prop Rotation
« Reply #9 on: July 15, 2011, 10:28:19 PM »

Ignoring the lights on the fuseboard for the moment,wire one motor at a time not through the board and see what happens.
I have had two identical motors,that when you reverse the current spin at different speeds.
looks like the fuse board is trying to correct the current to flow in the same direction so both motors spin same way in reverse.Yes they should spin opposite way to forward
Mark

I stand to be corrected by the elektristy wizard on here
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shimsham

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Re: Prop Rotation
« Reply #10 on: July 15, 2011, 10:42:45 PM »

Mark. I will try that but when you put them in reverse mode both the motors rotate clockwise.
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DickyD

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Re: Prop Rotation
« Reply #11 on: July 16, 2011, 08:59:53 AM »

Change the wires over on one of the motors.

Red to neg and black to pos.
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Richard Solent Radio Controlled Model Boat Club http://www.srcmbc.org.uk

shimsham

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Re: Prop Rotation
« Reply #12 on: July 16, 2011, 09:51:45 AM »

Will that effect the rotation going forward.
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wartsilaone

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Re: Prop Rotation
« Reply #13 on: July 16, 2011, 10:24:08 AM »

Richard has a point. Don't really understand it but it is standard practice on boats with twin motors.
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treeboa

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Re: Prop Rotation
« Reply #14 on: July 16, 2011, 10:24:48 AM »

you do have left and right handed props on the boat ??
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DickyD

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Re: Prop Rotation
« Reply #15 on: July 16, 2011, 10:35:09 AM »

He is using LH and RH props so motors need to be wired so one turns one way whilst the other turns the other way, so they need wiring as I said.
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Richard Solent Radio Controlled Model Boat Club http://www.srcmbc.org.uk

shimsham

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Re: Prop Rotation
« Reply #16 on: July 16, 2011, 10:37:22 AM »

Thanks for that Richard will give it a go.
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Tug-Kenny

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Re: Prop Rotation
« Reply #17 on: July 16, 2011, 11:54:16 AM »


A mystery   %)

I prefer separate speed controllers. It does rectify problems like this.   ok2

Ken

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Netleyned

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Re: Prop Rotation
« Reply #18 on: July 16, 2011, 12:11:27 PM »

My reading of it is that going ahead the props turn in opposite directions as they should do if wired as Richard explains
Seemingly when the stick is put to astern only one motor reverses which is a bit confusing.
Is there a diode on the power dist board?
You could try connecting both motors direct to the esc as Richard says and running out of the water should not be a problem with no fuse board

This will show if the ESC is reversing both motors.

I go with Tug Kenny though two motors two ESC's


Ned
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shimsham

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Re: Prop Rotation
« Reply #19 on: July 16, 2011, 12:39:03 PM »

Reversed the cables on the portside motor,so now i have both forward motors going clockwise and in reverse the port motor going  anticlock-wise and the starboard motor going clockwise.


Colin

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Netleyned

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Re: Prop Rotation
« Reply #20 on: July 16, 2011, 01:16:28 PM »

http://www.action-electronics.co.uk/pdfs/P95.pdf

If you are using Action P95 fuse boards as I strongly suspect
Check the wiring is exactly as the diagram for twin motors, 1 ESC as on the diagram on the link above

If all else fails talk to Dave ACTion  :-))

Ned
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Up Spirits  Stand fast the Holy Ghost.
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shimsham

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Re: Prop Rotation
« Reply #21 on: July 16, 2011, 02:11:10 PM »

Ned. I am using 2 X P95 fuse boards,according to the drawings i have got them wired correctly with the red diod showing when one motor is in reverse,i have reversed the wires as dickyd suggested but that did not correct the problem.
At the moment the props are working correctly going forward one going anti-clockwise the going clockwise if you put the motors in reverse they both go clockwise,change the wires on one of the motors and the reverse happens as above.
I spoke to Dave on thursday from the waterpark and he said he did not know what the problem was.

Colin

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ACTion

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Re: Prop Rotation
« Reply #22 on: July 16, 2011, 02:28:48 PM »

I do know what the problem is but it couldn't be fixed either over the telephone (while you were at the waterpark) or by posting on an Internet forum.
The P94 unit has been damaged and requires repair. Send it back.
DM
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craftysod

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Re: Prop Rotation
« Reply #23 on: July 16, 2011, 02:43:13 PM »

As i diagnosed before,the fuseboard is the problem,as the expert has said.
Lucky guess i presume
Mark
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Netleyned

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Re: Prop Rotation
« Reply #24 on: July 16, 2011, 03:04:58 PM »

As i diagnosed before,the fuseboard is the problem,as the expert has said.
Lucky guess i presume
Mark

Not so  Crafty

P94 Dual ESC and mixer not a fuseboard   O0 O0


Uncle Albert,

You could have saved us all a lot of headscratching if you had said you were in communication with Dave  >>:-( >>:-(

Ned
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