HMD 21 starting - help

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fallguy1000
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Re: HMD 21 starting - help

Post by fallguy1000 »

TomW1 wrote: Wed May 12, 2021 5:15 pm Butt blocks are not usually used on boats the size of the HMD. Instead 6" biaxial tape is used on all the seams. It is as strong and allows for smoother lay out of the 12oz biax cloth.

Tom
I agree this would be much better. However, if the designer suggested it, then we don't cross that path.
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Cowbro
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Re: HMD 21 starting - help

Post by Cowbro »

Mine has butt blocks on the two bottom panels. Not on the sides. The edges are tappered to allow the biax to lay nicely over the blocks.

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Evan_Gatehouse
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Re: HMD 21 starting - help

Post by Evan_Gatehouse »

Yes, fabric over the butt blocks. Butt blocks should have rounded edges so that the fabric lies easily over it.
designer: FB11/GV10,11,13/ HMD18/
SK17,MM21/MT24

duysall83
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Re: HMD 21 starting - help

Post by duysall83 »

Evan_Gatehouse wrote: Thu May 13, 2021 12:13 pm Yes, fabric over the butt blocks. Butt blocks should have rounded edges so that the fabric lies easily over it.
Ok, thanks everyone. Had to try my chance :)

duysall83
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Re: HMD 21 starting - help

Post by duysall83 »

Hello all, can i put the water tank like this? Doesn't fit paralel to water length due to a wrong purchase
IMG_20210620_103957.jpg

fallguy1000
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Re: HMD 21 starting - help

Post by fallguy1000 »

Yup. Don't forget to vent it! Center it is best. Boats are all weight sensitive.
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TomW1
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Re: HMD 21 starting - help

Post by TomW1 »

Yes, build a platform so it doe's not set on only the end points. That looks like a pretty nice tank.

Tom
Restored Mirror Dinghy, Bought OD18 built by CL, Westlawn School of Yacht Design courses. LT US Navy 1970-1978

duysall83
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Re: HMD 21 starting - help

Post by duysall83 »

TomW1 wrote: Sun Jun 20, 2021 12:25 pm Yes, build a platform so it doe's not set on only the end points. That looks like a pretty nice tank.

Tom
There will be 2 of them. Second one for waste water. I plan to put them next to each other with a seperation. And there will be pumps close to the tanks.

For the bottom support here what i plan according to what i read on forum. Please advice, thank you.

Duysal
SAVE_20210620_195207.jpg

TomW1
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Re: HMD 21 starting - help

Post by TomW1 »

Never have a board rest directly on the V. Do a support on either side of it. Or run a support underneath it glued to the hull sides.

Everything else sounds great.

Tom
Restored Mirror Dinghy, Bought OD18 built by CL, Westlawn School of Yacht Design courses. LT US Navy 1970-1978

duysall83
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Re: HMD 21 starting - help

Post by duysall83 »

Thank you Tom and Dan.

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