Search found 49 matches

by Vundu
Sun Nov 07, 2021 12:20 pm
Forum: Core Materials: Plywood, Foam core and Honeycomb
Topic: Mycell 80 and Corelite 450 for TX18 build
Replies: 16
Views: 1835

Re: Mycell 80 and Corelite 450 for TX18 build

Yes, you could use Corelite for every thing. I will try to find pictures of a simple peel test. I use the same method than Boeing: a sample with a tab of skim that extends from the core and is pushed up and won by an eccentric, a cam. There is an ASTM method, just do a google search. Will do, thank...
by Vundu
Sat Nov 06, 2021 3:24 pm
Forum: Power Boats
Topic: TX18 Centre stringer fit and modification
Replies: 54
Views: 1966

Re: TX18 Centre stringer fit and modification

Transom is straight on the bottom. Scroll down on this link and see pic: https://www.community.boatbuildercentral.com/forum/viewtopic.php?t=15242&start=90 Also use DaveTx's link to his blog to see more. Dougster I can't find the pic, but I trust you. The blog link is broken as well, but I trust...
by Vundu
Fri Nov 05, 2021 1:28 pm
Forum: Power Boats
Topic: TX18 Centre stringer fit and modification
Replies: 54
Views: 1966

Re: TX18 Centre stringer fit and modification

Vundu-how will you deal with it? Hi Fallguy. The short answer is I am not sure yet. I have been inundated with work, so tomorrow is the day. I will take a few more pics tomorrow and post them. I have checked and double checked the bulkheads and cannot find any anomalies. This is not to say I haven'...
by Vundu
Thu Nov 04, 2021 12:48 pm
Forum: Power Boats
Topic: TX18 Centre stringer fit and modification
Replies: 54
Views: 1966

Re: TX18 Centre stringer fit and modification

The center stringer bottom side is straight where marked straight. It looks like you did that right. The MW bulkhead is a little low but keep in mind that you will fine tune all the framing along the hull skin side to fit to the fiberglassed inside. You will make it fit at that time: all frames and...
by Vundu
Thu Nov 04, 2021 1:16 am
Forum: Power Boats
Topic: TX18 Centre stringer fit and modification
Replies: 54
Views: 1966

Re: TX18 Centre stringer fit and modification

It must be straight. That is why I wrote "straight above that line. I don't know why there is second line with a camber superposed on it. I will check my version of the drawing later today: I am on the road now. HI Jaques, Please could you take a quick look at this thread and confirm if I am s...
by Vundu
Tue Nov 02, 2021 1:53 pm
Forum: Core Materials: Plywood, Foam core and Honeycomb
Topic: Mycell 80 and Corelite 450 for TX18 build
Replies: 16
Views: 1835

Re: Mycell 80 and Corelite 450 for TX18 build

Corelite 450 looks very close to Aquaplas and could be used as transom foam IF it bonds well with epoxy. That would require a sample and some testing. It's a PVC and some PVC's like Aquaplas III bond well but many other high density PVC foams peel easily. Corelite agrees with me about testing. This...
by Vundu
Tue Nov 02, 2021 12:11 am
Forum: Core Materials: Plywood, Foam core and Honeycomb
Topic: Mycell 80 and Corelite 450 for TX18 build
Replies: 16
Views: 1835

Re: Mycell 80 and Corelite 450 for TX18 build

I just came back from a short vacation during which I had very little internet access. I will compare those core materials to Corecell and Aquaplas. This will take a day or two: I have to find the specs of each for the same ASTM test method and also check if those ASTM methods are adequate to measu...
by Vundu
Mon Nov 01, 2021 3:15 pm
Forum: Power Boats
Topic: TX18 Centre stringer fit and modification
Replies: 54
Views: 1966

Re: TX18 Centre stringer fit and modification

It must be straight. That is why I wrote "straight above that line. I don't know why there is second line with a camber superposed on it. I will check my version of the drawing later today: I am on the road now. Hi Jacques, I've done some more work on my TX20 centre stringer glitch. I would be...
by Vundu
Mon Nov 01, 2021 3:08 pm
Forum: Core Materials: Plywood, Foam core and Honeycomb
Topic: Mycell 80 and Corelite 450 for TX18 build
Replies: 16
Views: 1835

Re: Mycell 80 and Corelite 450 for TX18 build

Thanks Fallguy. Since he does not plan to use any of those for the hull skin, it will probably work. I will look for more details about the use of those for transom foam but the TX18 is not going to suffer from extreme transom stress. Thanks again. Hi JM, Not sure if you picked up the message below...
by Vundu
Sat Oct 30, 2021 2:10 pm
Forum: Power Boats
Topic: TX18 Centre stringer fit and modification
Replies: 54
Views: 1966

Re: TX18 Centre stringer fit and modification

For some reasoon this post did not post. All dimensions must be increased by 10% 10% to maintain the strength of the boat. Since the stringers and frames are widened out there height must be increased to support more weight, just like in a hpuse the beams must increase height the longer they span. ...