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SV Carbon Tank project for Zoran

tygaboy, I have been doing some research on the issue of ethanol and its impact on resins. It looks like fuels with ethanol added will destroy the resins in most fiberglass. I found that you should be using something that meets the UL 1316 standard for contact with fuels. I have found a product called CoREZYN VE8770 that meets this standard. In the materials that I have read they talk about using cobalt, DMA & MEKP for the catalysts. They also warn about fire and explosion if you do this wrong. As I am a complete noob I am a little concerned! :rip

Do you have any insights on this? Have you ever worked the the cobalt catalysts? Is this really necessary?

Here is the product brochure: http://www.interplastic.com/UserFiles/File/M_VEBrochure.pdf.

Thanks!

Steve
 
Sweet Jebus! Betwixt this post on SV650 tank hotness and the 'Burban post on '67-72 you've destroyed about 2 hours of my life and got me all hot and bothered about CF parts and esoteric diesel swaps.

Gracias mi amigo!:cool

PS - Now that I finished the 'burb thread, WTF mate? Updates are in order!
 
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lonerockz said:
tygaboy, I have been doing some research on the issue of ethanol and its impact on resins. It looks like fuels with ethanol added will destroy the resins in most fiberglass. I found that you should be using something that meets the UL 1316 standard for contact with fuels. I have found a product called CoREZYN VE8770 that meets this standard. In the materials that I have read they talk about using cobalt, DMA & MEKP for the catalysts. They also warn about fire and explosion if you do this wrong. As I am a complete noob I am a little concerned! :rip

Do you have any insights on this? Have you ever worked the the cobalt catalysts? Is this really necessary?

Here is the product brochure: http://www.interplastic.com/UserFiles/File/M_VEBrochure.pdf.

Thanks!

Steve
Click to expand...

If I recall, I barely passed high school chemistry so I have no idea about anything like this. I coated the inside of my tanks with a liner, as you saw in the posts so maybe it's a non issue. But who knows. I'd say be sure to avoid fuels with Ethanol...
 
Chris, thanks for the honesty! I did pass high school Chem and I still am not sure. Avoiding Ethanol is not an option up here in the tundra. I saw the liner, but I am afraid that it may crack in time. I did find that they sell a VE8771 which has the cobalt mixed in, so that is probably the way to go. Still researching...
 
lonerockz said:
Chris, thanks for the honesty! I did pass high school Chem and I still am not sure. Avoiding Ethanol is not an option up here in the tundra. I saw the liner, but I am afraid that it may crack in time. I did find that they sell a VE8771 which has the cobalt mixed in, so that is probably the way to go. Still researching...
Click to expand...

The liner dries to what seems like a non-rigid, kinda hard rubbery state - seems like it'll flex. I can't say what might happen in sub zero environments but I'd bet the manufacturer would be able to comment...?
 
Chris you do awesome write ups. I learned how to do all my carbon work from watching your classes on You Tube. I rarely come out of the mini section on BARF. I never knew you were on here. Iv made ALOT of parts now.

My first carbon part. Gas tank for my Desmini 448R project.
dscn0259wb6.jpg


Sorry to be off topic.
~Shawn @ BMS
 
shawnbassett26 said:
Chris you do awesome write ups. I learned how to do all my carbon work from watching your classes on You Tube. I rarely come out of the mini section on BARF. I never knew you were on here. Iv made ALOT of parts now.

My first carbon part. Gas tank for my Desmini 448R project.
dscn0259wb6.jpg


Sorry to be off topic.
~Shawn @ BMS
Click to expand...

Shawn,
Thanks for the kind words. It's nice to hear that folks found all this helpful. But, Dude! Your tank looks killer! "My first carbon part." Kicked my ass. My first part was an SV fender where I mixed the epoxy wrong and it came out of the mold fine - but it was totally flexible! Kinda cool actually - useless, but kind of cool. And btw, you're far from off topic.
Keep up the nice composite work!
 
Thanks, i didn't want to thread jack ya. Well not technically my first piece, i did a few tests to get the epoxy right. I made a lot of mistakes at first that way when i was read to do something nice i worked out all the kinks and new what i was looking for.
~Shawn @ BMS
 
Chris what Brand Epoxy do you use?
~Shawn @ BMS
 
I think you mentioned west systems originally, still the same? Do you have any experience with others? if so could you elaborate.
 
Bohalrantipol said:
I think you mentioned west systems originally, still the same? Do you have any experience with others? if so could you elaborate.
Click to expand...


Still use West Systems. I'm sure there are other fine products out there but I like West and plan to keep using it.
 
god damn I love this thread. about once a year I look at it in awe. i'm starting a new project and I'm thinking about trying out some simple fiberglassing. no CF yet, just some simple stuff.

simply awesome work bro. :)
 
Man I love this thread! Reading it over and over to make sure I didn't miss anything. I have a question and I am pretty sure you haven't already answered it in this thread. Why did you do a layer of fiberglass on the final product tank? Oh yeah, does anyone have a link to tygaboy's stuff on youtube???
 
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batman911 said:
Man I love this thread! Reading it over and over to make sure I didn't miss anything. I have a question and I am pretty sure you haven't already answered it in this thread. Why did you do a layer of fiberglass on the final product tank? Oh yeah, does anyone have a link to tygaboy's stuff on youtube???
Click to expand...


Not sure what you're looking at. I did add a layer of fiberglass as part of the layup - it's reasonably strong but much cheaper than another layer of carbon. Why do I do that? Because the guy I learned from (Composite Sensai) did it that way! So long as there's enough material...
And there was some fiberglass added between the gas cap and the carbon because I've heard there can be some reaction between Al and carbon. I could be totally mistaken - and may well be since I see hard points bonded to carbon all the time - but it can't hurt...
Is that the fiberglass layer you're talking about?

And if you search YouTube for "tygaboy", you'll find those vids.
 
Yeah, I was talking about the layer you put on the final layup. I was just wondering why you did that... Makes sense. It is plenty strong and alot cheaper. Hey, you wouldn't happen to have any pics of you making a tube would you? I am interrested in seeing how you modified the innertube to work for the application.
 
batman911 said:
Yeah, I was talking about the layer you put on the final layup. I was just wondering why you did that... Makes sense. It is plenty strong and alot cheaper. Hey, you wouldn't happen to have any pics of you making a tube would you? I am interrested in seeing how you modified the innertube to work for the application.
Click to expand...

I've made a couple tubes but they we're not "pretty", nor did they need to be. I've talked to one guywho did tube building and he used inflatable bladders: layup inside the tube, inset then inflate the bladder. Seems simple enough (famous last words...)
Depending on the size of the tube you need, you may be (way) better off buying it...
Sorry I can't help more.
Chris
 
Well, my exhaust can has some rash on it and I was thinking about covering it or just building a new sleeve for it. Does someone sell different diameter cf/kev tubes cut to specific lengths?
 
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For the last month I have been making ABS brackets, those I convert into a fiberglass mold without using the vacuum bag technique. My issue I am having now is when I vacuum bag fiberglass or the carbon fiber the final product is not smooth. When running my nail over the finished side I can feel all the fibers, and not a glossy finish, but when I do not use a vacuum I get a perfect finish. Any ideas what this can be?

Is there an air bubble in the part that I am vacuum bagging?
Should I let the part gel first before vacuum bagging?
I vacuum bag the parts for about 3 hours till everything cures, is this to long?

Thanks Tyga.
 
Hellraizer547 said:
For the last month I have been making ABS brackets, those I convert into a fiberglass mold without using the vacuum bag technique. My issue I am having now is when I vacuum bag fiberglass or the carbon fiber the final product is not smooth. When running my nail over the finished side I can feel all the fibers, and not a glossy finish, but when I do not use a vacuum I get a perfect finish. Any ideas what this can be?

Is there an air bubble in the part that I am vacuum bagging?
Should I let the part gel first before vacuum bagging?
I vacuum bag the parts for about 3 hours till everything cures, is this to long?

Thanks Tyga.
Click to expand...

When you say you can feel the fibers, is it consistent across the entire part or are some areas "ok"? And check to see how much vacuum you're pulling. It sounds like you might have too little epoxy.
 
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