Touchwood Bluebird 1/12 K7

Riggers or hydroplanes

Touchwood Bluebird 1/12 K7

Postby Biscuit » Thu Mar 11, 2010 1:04 am

Hi all, I have been on most of the boat sites now trying to get some info on my Touchwood Bluebird, I built years ago and its just sat on the shelf since then because I have no Idea what to power it with, I have bought an ETTI 4960 kv motor and a ETTI 150 esc, but thats about it, I have heard that Astec used to do a drive system for this boat, any info would be most welcome.
Many thanks.
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just gathering dust :-(
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Re: Touchwood Bluebird 1/12 K7

Postby astecme » Thu Mar 11, 2010 10:01 am

The best solution is surface drive - 5mm offset to Right (from rear) to compensate fopr the prop. 22/30/2 motor on 3s with ann octura x438 3 blade prop. The two blade props cause too much prop walk. Needs to be flex drive.

The original used 10/11 cells. This does not turn well!!

Allan
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Re: Touchwood Bluebird 1/12 K7

Postby Biscuit » Thu Mar 11, 2010 1:54 pm

astecme wrote:The best solution is surface drive - 5mm offset to Right (from rear) to compensate fopr the prop. 22/30/2 motor on 3s with ann octura x438 3 blade prop. The two blade props cause too much prop walk. Needs to be flex drive.

The original used 10/11 cells. This does not turn well!!

Allan


Thanks for the reply, seeing I have bought the 4900 kv motor could I run it on a good 40c 2 cell ? should give me around 35,000 rpm, and is the height of the centre of the prop level with the rear of the front sponsons as in the original Ernie brushed set up in the Touchwood kit box, about 12 mm down from the rear transom and where abouts should the C/G be ? plus how far out should the prop be out of the rear of the boat. sorry for so many questions
Many thanks.
Steve
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Re: Touchwood Bluebird 1/12 K7

Postby astecme » Thu Mar 11, 2010 2:22 pm

Re the motor thats a maybe - you may be a bit heavy for it. The setting is as you describe. You need to just lift the rea of the rear shoe.
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