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I am putting together a FighterCat Cheetah and was wondering how to configure the rotation of the counter-rotating props? Should the LR prop be on the outside shaft or the inside shaft?
We run a clockwise course at our pond if that makes a difference.
My twin Cheetah runs great with inward spinning props.
Same here with my ProMarine Skater X2...port side runs clockwise, and starboard side runs counterclockwise.
~ More peace, love, and kindness would make the world a much better place
most boats I see run the props turning to the inside they say inside for speed turning out side for handling !!1
Chris, so you'd say 'inward' for racing, and 'outward' for SAW? Just curious, myself, as I'm also still learning.Quote:
Originally Posted by dasboata
~ More peace, love, and kindness would make the world a much better place
I checked the "Big Boys" over at Mercury Racing and they run them turning inward; CW on the port side and CCW on the starboard side.
Thanks!
inside for SAWQuote:
Originally Posted by Panther6834
Got ya ..so, inside for racing & SAW.Quote:
Originally Posted by dasboata
~ More peace, love, and kindness would make the world a much better place
My experience has been it depends on both the hull and if you're after straight line stability or turning performance. What the full scale boats do doesn't really apply to us, the hydrodynamics are completely different... primarily because our props aren't scale sized.
On a twin you just change the leads for changing the rotation direction right?
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No. To change the direction of a motor, you just swap any two wires, but then you MUST swap your flex cables and props to the opposite sides. If you don't swap your cables, you'll spin them in the wrong direction, causing them to unwind and potentially cause catastrophic damage.Quote:
Originally Posted by ArnoudRC
Tx. I?m aware of the rotation direction for the flexshafts. They differ. For the motor direction I was curious.
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mis leading and damaging information on this conversationQuote:
Originally Posted by ArnoudRC
Was not the intention. Following the advice to run two props inward on a rc cat, I just wanted to be sure that (with the right flexshafts and props cw/ccw) I change motor direction by swapping the leads. Am preparing myself for a twin cat for next season, that?s why I ask. Is that damaging? Sorry.
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Assuming that you have flex shafts that are wound in opposite directions, another way to reverse the motor direction is to program the ESC rotation (CW or CCW).
I have my motor leads color-coded to keep the same wiring configuration in case I have to remove an ESC or motor.
Thank you. Not sure if the stock Seakings 120 will accommodate that. Will check. Yes, I have ordered one piece flexshafts left and right for the boat (its a Zonda btw).
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I checked my Seaking programming card and you are correct that you can NOT program the direction so you have to swap any two motor wires (and be sure to have the correct winding direction for each flex shaft).
No worries. Got confirmed what I thought. Will redo the coloured shrink protection after tuning. Makes it easier to change motors.!
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However, in my case I can't just swap motor leads. I need to also swap the two motor flex collet couplers because one coupler has LH threads and the other has RH threads. This is to keep each collet from coming loose from the counter-rotating motors.Quote:
Originally Posted by fweasel