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Tolerable twist... is that a thing?

Submitted by Hikerob - Fri, 8/5/16 » 12:25 PM

Hey builder community,

So the Chesapeake 17 that I squared up to the point where it looked perfect before filleting (I thought) has a bit of a twist now that I've checked my work. Fillets are about 20 hours old and pretty thick. I haven't glassed the cockpit yet but I have taped and glassed the seams.

The twist seems to be to starboard aft. Shiming my winding stick on the starboard aft (at the 40" mark) by 1/8" brings everything into visual alignment.

So... based on your experience, is this tolerable or something I should set about fixing before I get further along? I've read that a heat gun could help but welcome any input on technique (or, I'd even more welcome "nah! It's fine! Keep building!"... but only if that's your honest opinion).

Many thanks!

https://goo.gl/photos/y9v5xGbgLjqcwCPC9

https://goo.gl/photos/KyCXgLuZxHH5eXwr7

4 replies:

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RE: Tolerable twist... is that a thing?

» Submitted by Hikerob - Fri, 8/5/16 » 12:36 PM

Sorry... For some reason the photos aren't showing up in the post, but if you copy and paste the links, they seem to work.

RE: Tolerable twist... is that a thing?

» Submitted by Laszlo - Fri, 8/5/16 » 12:53 PM

I'm having a tough time seeing any twist. Maybe the back right stick tip is lower.

Are you sure the back stick is level? I can see the bubble in the level up front and that is level, but the one in back is just a simple stick, so I can't tell. Have you tried rotating the stick to see if the perceived twist changes? Maybe the boat's fine and the stick is twisted.

But in answer to your original question, an 1/8th inch twist over 17 feet will not be noticeable either visually or in performance on the completed boat. If it's been 20 hours I would just ignore it. Before filleting it'd be worth a change, but now you're just as likely to cause problems as fix them.

Have fun,

Laszlo

RE: Tolerable twist... is that a thing?

» Submitted by Hikerob - Fri, 8/5/16 » 1:14 PM

Thanks Laszlo!

Here's an image taken from aft. You can see it's bubble-level WITH the 1/8" shim (and visually more level with the stick at fore).

So... I think I'm hearing "keep building!" - music to my ears!

Unless, of course, anyone else chimes in...

Aft

https://goo.gl/photos/NAJhWsNX5btTVVyY6