macnab
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 posted on 14/12/06 at 08:09 AM |
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back to balancing the boat
Hi,
I took some pics of the R/C boat I'm building. If you didn't catch the last message yesterday I'm trying to find out where the boat
should be balanced so I can make the cradles for the battery packs (the heaviest things on the boat). Its at the glass cloth on the bottom stage which
is going well and I'm hoping to get it in the water in a couple of weeks depending on how long the painting takes. Any Ideas?
Cheers, Scott.
 
Rescued attachment boat top.JPG
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macnab
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| posted on 14/12/06 at 08:11 AM |
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oh and here' the underside (that round thing in the last pics a 2p coin for scale)
 
Rescued attachment boat underside.JPG
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donut
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| posted on 14/12/06 at 08:43 AM |
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Oooh that looks yummy!
As for the battery position, if you're going by the plans then they should suggest where to put them, if it's your own design then
it's a bit of trial and error. Best time is when the boat is in the water. You will only know when the boat is running as you'll be able
to see how it behaves and how it sits in the water when stationary and running full chat.
Good luck with it. I would do model boats but there's no where around me where you can run them 
Andy
When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
http://www.flickr.com/photos/andywest1/
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macnab
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| posted on 14/12/06 at 09:01 AM |
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Thanks. No plans for it just some doodles I did, you may be right and I might just have to try it out on the water. We're very lucky here as the
city has a large pond just for model boats.
Scott.
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Richard Quinn
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| posted on 14/12/06 at 09:55 AM |
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I would guess at around 1/3 from the transom. Put the battery packs in using that sticky backed velcro strip. This is very secure and allows for
repositioning.
The prop tubes look a little steep but it may be the angle of the photo. At least you can fit bigger props on when you put the bigger motors in 
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macnab
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| posted on 14/12/06 at 10:15 AM |
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Thanks for that. Yes the props are sitting quite steep but I was thinking of the slight over powering of the boat. It has two 850 torpedo motors and
apparently one would have been enough but their only £24 each so I thought why not??! (probably a dangerous way off looking at things).
I personally think the props are too small (45 mm) considering there's (I think) over 150 watts going through each but that’s the size I found
on the web. Can't do much about the shaft angle now, I've glassed the tubes into the hull
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