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Old Jul 22, 2012, 10:43 AM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
7,301 Posts
Hmmmm, is the beverage Cooper's or James Squires???????
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Old Jul 22, 2012, 02:33 PM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
3,275 Posts
Nah. They were only cans of soft drink. The kids wouldn't touch them at a party.
Needed the extra weight of the lead bricks & SLA batteries to hold the 1.5mm ply skin nice & flat. All those weights are what I use in some of my bigger scale boats as ballast.
Cheers.
Paul.
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Last edited by 785boats; Jul 26, 2012 at 05:45 AM.
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Old Jul 26, 2012, 06:19 AM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
3,275 Posts
Time for an update.
Over the last few nights I have added the rest of the bottom & side skins to the tub & the sponsons. Side skins on the sponsons first with the grain running vertical for ease of bending at the tips of the sponson. After trimming & sanding, the bottoms were added. I gluet the very tips first & once the epoxy had set, I was able to apply the glue to the rest of the structure & bend the panels into shape. Held in place with weights & clamps.
Anyhow here's a couple of pics.
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Last edited by 785boats; Jul 03, 2014 at 03:31 AM.
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Old Jul 26, 2012, 06:29 AM
Redneck Injuneer
bill34207's Avatar
Bradenton, Florida
Joined Aug 2007
6,453 Posts
Coming along nicely Paul. Another week or so and you should be about ready to fit it out and paint.
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Old Jul 26, 2012, 08:41 AM
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F1 madness's Avatar
Staffs UK
Joined Feb 2010
3,087 Posts
Nice build paul
iv not done a build for a while now like this as im aiming for moulding etc now
but seeing this gets me itching to get back to the drawing board and see what i come up with hehe
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Old Jul 26, 2012, 09:17 AM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
7,301 Posts
Well done!
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Old Jul 27, 2012, 10:06 AM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
3,275 Posts
Thanks guys.
Things are falling into place quite easily with this one. I just got home from work & gave the insides a coat of polyurethane sealer. Except the center tub. I'll lay some thin glass in there.
Unfortunately I have to work tomorrow morning(Saturday). Then it's 'compulsory enjoyment' of running boats with the guys all afternoon. So tomorrow evening I should get the foam in & carved to shape.
The top skins are cut & ready to fit after that.
Must go charge some batteries for tomorrow.
Cheers.
Paul.
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Old Jul 29, 2012, 01:32 PM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
3,275 Posts
Well I've added the foam. I only put in about 3/4" in the bottom of each section to allow it to grow. After a few hours I pierced each section with a pencil a few times to allow air to get at the foam inside to make sure it was fully cured & wouldn't grow again in the future. It was till a bit moist & sticky in the centre of most of the sections. In some places it then grew out of the pencil holes. Then I cut off the excess above the deck line.
Yesterday while at our clubs race day the hull spent the day sitting on the roof of my car 'baking' in the sun to encourage any more growth. But nothing happened. I pierced the sections again with a pencil & every thing was crisp & dry on the insides of all the sections. There's a few places where the foam didn't grow all the way up to the deck line, so I'll add a bit more there, sand it all to shape & then add the decks.
Here's a couple of pics. The first couple are when it was a bout half expanded, & the last one is with the piercings & the tops cut off, after a day in the sun.
Cheers.
Paul.
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Old Jul 29, 2012, 02:03 PM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
7,301 Posts
Thats one well built, sturdy looking boat there................. It'll never sink either!!
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Old Jul 30, 2012, 03:36 PM
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Wow very nice!
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Old Jul 31, 2012, 04:51 AM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
3,275 Posts
Thanks Kcal.

Scorp.
Even without the top skins on there is very little flex in the hull, even when i try to twist it.. That foam really strengthens it up.
Should stay afloat no matter what happens.
Cheers.
Paul.
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Old Jul 31, 2012, 12:34 PM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
7,301 Posts
I'm too lazy to look right now, whats the motor? 8s right?
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Old Jul 31, 2012, 03:00 PM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
3,275 Posts
Yep. 8s on this motor.
http://shop.rcboatbitz.com.au/index....roducts_id=782
It arrived the other day. What a monster . It almost looks too big. But at least I can start making the mount for it now.
The club is yet to make a decision on whether the drive dog is to remain under the hull ( and therefore the strut as well) as per AMPBA gas power rules, or whether the strut can be mounted on the transom which will put the drive dog behind the transom. The decision will affect the final position & angle of the mount, in the boat.

Cheers.
Paul.
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Old Jul 31, 2012, 06:41 PM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
7,301 Posts
Be forewarned that the motor you have there is gonna suck some MAJOR amps!! I'd be a bit scared of running even a 240s speedo, if thats what you have then keep the prop conservative.
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Old Aug 01, 2012, 02:02 PM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
3,275 Posts
I don't intend to use a huge prop. So I won't be loading it up to anywhere near its max potential. I find that smaller props on most motors give faster speeds without drawing huge amps. I don't expect this one to be any different.
Don't forget, that we can't use parallel packs so we have to prop more conservatively than you guys anyway if we want to finish a race without killing the packs.
Only time will tell, I guess.
Cheers.
Paul.
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