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Author Topic: What model is this  (Read 2731 times)

hammer

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What model is this
« on: November 12, 2012, 01:41:19 pm »

I was given this boat, I am sure you all know what it is. So can some one tell me. Length 35 inches. About  50 years old I would think. Fitted with FROG diesel, about 2cc?? Geoff
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triumphjon

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Re: What model is this
« Reply #1 on: November 12, 2012, 01:50:19 pm »

its an old aerokits crash tender
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hammer

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Re: What model is this
« Reply #2 on: November 12, 2012, 02:01:32 pm »

Thank you. I had better paint it in the correct colours then. Geoff
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John W E

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Re: What model is this
« Reply #3 on: November 12, 2012, 02:05:36 pm »

Hi  hammer
have a look at this 
http://www.modelboatmayhem.co.uk/forum/index.php?topic=39278.0
it may help you  :-)) :-))


aye
john
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DickyD

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Re: What model is this
« Reply #4 on: November 12, 2012, 02:06:50 pm »

Yes one of these.
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Arrow5

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Re: What model is this
« Reply #5 on: November 12, 2012, 03:48:03 pm »

Whip out the Frog engine and go electric.   That motor would sell for a nice price to engine collectors.
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Circlip

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Re: What model is this
« Reply #6 on: November 12, 2012, 05:23:15 pm »

Frog 2.49BB
 
  Regards  Ian.
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hammer

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Re: What model is this
« Reply #7 on: November 12, 2012, 10:53:32 pm »

thank you all for the info  Not my type of model, so I plan on spliting engine & hull, then selling on. Geoff
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spearfish99

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Re: What model is this
« Reply #8 on: November 12, 2012, 11:14:43 pm »

Just bought one off of Ebay, needing a bit of love. Came with a set of brand new fittings and set of vinyl markings. arrived this am.

Never had a rudder, shaft or motor fitted. I was thinking of using a Graupner 700BB 9.6v for power.

Anyone any suggestions for a brushless alternative ?
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pompebled

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Re: What model is this
« Reply #9 on: January 17, 2013, 09:40:16 pm »

Hi Spearfish,

If you want to run at scale(ish) speed, get a brushless motor, that will spin roughly the same rpm as the 700BB 9,6V , which is a 1200Kv motor (accounting for the 69% efficiency of the 700BB).
Compared to the 700 motor you'll have instantly more torque and runtime, due to the much more efficient motor.
A Ø 36 mm motor already is more powerful than the 700 motor.

Keep in mind the low end response of a brushless motor isn't nearly as good as a brushed motor, specially with the higher Kv inrunners, which tend to burst into life at 1/3 throttle, making crawling along an ilusion...

I have the 'best' results with low Kv outrunners combined with a car ESC, but even that low end response doesn't come near my brushed set-ups with multipole motors, where you can count the revolutions, using a relative cheap controller.

I assume you've found this thread:
http://www.modelboatmayhem.co.uk/forum/index.php?topic=39278.0
Plenty of power using two outrunners!

Regards, Jan.
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