Stingray Build

[Reckless]

How do you resolve the shrinkage issue?

David

.. stay outta the cold water....

[RCnut]

Hi Guys

In this case the shrinkage is not going to be a problem as I'm building this model without a size reference so far. To Clarify, When I'm happy with the hull sections the shape and the mating of them I will take measurements and determine what scale it is then build everything around it to that scale. At the moment its just a case of getting the shape right, I'm aiming for 32 inches in total length. To be honest this is the first time I have ever started a build without a firm scale to work too and this as I said in the first post was to seperate this build from any others out there.

[Subculture]

Well it looks like Mamas uses a slightly different technique to me. What I do is bulk out with polurethane foam, glass over with matt and resin, then fill over that. So I use a thinner coat, which equals less shrinkage. But I find if you go over a thick coat of filler with a thinner skim after the first layer has cured, that usually deals with any shrinkage or 'sink'.

[He Who Shall Not Be Named]

That's polyester filler, Dave. The Upol brand (big yellow tin behind) over here is the equivalent to Evercoat in the States.

How do you resolve the shrinkage issue?

David

[Subculture]

That's polyester filler, Dave. The Upol brand (big yellow tin behind) over here is the equivalent to Evercoat in the States.

[He Who Shall Not Be Named]

What are you using there, plumber's putty?

David

[RCnut]

Top Hull, Needs sanding back then the upper layer needs to be done as well as the ratemaster blob.

[RCnut]

Today I filled and sanded the bottom hull, I now need to burn out the plastic and refill with filler.

[He Who Shall Not Be Named]

Yeah, get me that address and I'll burn copies tonight.

David

[RCnut]

Had a bit of a busy spell today, cut the ribs, glued them in and back filled with card to limit the amount of filler I would use. The belly on skydiver was made the same way but had plasticard filling, so as card is being used here and is not as strong, I need to make sure the seperate compartments of filler meet so as to be more stable. As you can see I have drilled holes in the ribs to allow the filler to flow thru so to speak.

David, I will e mail you now and would very much appreciate any Dope you have.:biggrin:

[Subculture]

Good stuff. The Stingray and the Supercar are the only two GA vehicles that I have ever been tempted to build myself.

Worth having a word with Ahmed LAtif (on the Dive-in facebook page). He's the only one I know in the Uk with a working Stingray that also dives. I think it uses a vectored nozzle to tilt and yaw.

Here it is in action, could do with a bit more pace, wouldn't be difficult with a change of motor and prop-

[He Who Shall Not Be Named]

OK, Mamas, we've had our fun ... time to stop hi-jacking your thread.

I have a file of STINGRAY dope. If you think it would be useful to you, I would be delighted to copy it and mail it off to you. If so, I'll need your mailing address, contact me at, dmeriman@aol.com if interested.

David

[He Who Shall Not Be Named]

LOL-and its there isn't it? I just know that it's going round and round in your head and you are humming away as you work...."Mariiiiiiiiiiiiiina.........aqua Mariiiiiiiiiiiiiiiiiiiina".Scuba Diving

Damn you! ... damn you all to HEEELLLLLLL!!!!!! (think Charles Heston groveling in beach sand)

[RCnut]

You guys crack me up lol, anyway today I hope to get the ribs cut for the bottom part of the hull. Pics to follow.

[Nige1912]

Oh, I so hate that luvy-duvy, insipid, eye-twinkling, puke-inducing love song!!!!!

Please, God! Tell me Barry Gary had nothing to do with that awful thing!

(and, Nige: there is a special place in hell for people who put that tune in the head of other people!).

David

LOL-and its there isn't it? I just know that it's going round and round in your head and you are humming away as you work...."Mariiiiiiiiiiiiiina.........aqua Mariiiiiiiiiiiiiiiiiiiina".Scuba Diving