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SV Carbon Tank project for Zoran

redline said:
Yay. Tygaboy's back. Hope to see more cool project updates!
Click to expand...

Why thanks for the nice "welcome back". I've been doing zero bike stuff for about a year. Lots of other stuff going on. That said:

I just got a neato Honda NSR 250 that is begging to be tricked out.
I see a carbon tank, zoomy suspension, crazy cool paint on some nifty bodywork.
I'll start a thread as the work begins.

Do we need another Carbon Seminar?

Y'all ride safely, now. Ya hear? :ride
 
tygaboy said:
Why thanks for the nice "welcome back". I've been doing zero bike stuff for about a year. Lots of other stuff going on. That said:

I just got a neato Honda NSR 250 that is begging to be tricked out.
I see a carbon tank, zoomy suspension, crazy cool paint on some nifty bodywork.
I'll start a thread as the work begins.

Do we need another Carbon Seminar?

Y'all ride safely, now. Ya hear? :ride
Click to expand...

yes please... nice work btw. :thumbup
 
Read the entire thread front to back and ended up late to work earlier and had to come back and look at pictures again =)!!! Great write up and work on the tank(s)!!!
 
Intereseting read on Ethanol-Epoxy interaction

Frustrating that the study does not give specifics on when it was conducted, what epoxy was used specifically in this test, nor what kind of lining was used:

http://www.boatus.com/seaworthy/fueltest.asp

Finally, chemical resistance data from a leading epoxy supplier showed that even epoxy can be attacked by ethanol. The test was made using the company's most resistant epoxy and exposing fiberglass lab samples to 10% ethanol gas and regular unleaded gas as well as diesel and aviation gas. The results for the ethanol gas showed a 10% loss in hardness and a 10-15% loss of compressive strength over a 16-week period and it’s likely that the loss of hardness and strength would continue to fall at a similar rate. The unleaded gas, diesel, and aviation gasoline tests, none of which contained ethanol, showed virtually no loss of strength.
[...]
What to Do?
Many boaters have made the decision to replace what were thought to be superior fiberglass gas tanks with aluminum tanks (tank replacement is not covered by insurance). Seaworthy has talked to resin manufacturers who say that there are resins that resist ethanol, but simply coating a tank with one of these resins is not likely to work, since the tank has to be thoroughly cleaned and prepped on the inside and the resins have to be specially cured.
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Hey Tygaboy, How have your tanks held up for you with using POR-15 as your chemical barrier? I've read elsewhere on the web that it's not a recommended solution for composites but seems like it works for you.

I recently found this stuff that appears to be applicable:
http://www.caswellplating.com/aids/epoxygas.htm

Actually from the article at the top,there's a link out to some boat builder's own empirical test with ethanol vs epoxy using the caswell jizz as a barrier:
http://egyptian.net/~raymacke/Cbnskif27.htm
 
Vent Cap

in post #283 you show mounting the gas vent cap. Do you know any place to get these? I'm building an aux tank and I would like interior venting, but cnat find one of these. Thinking of visiting a junk yard, but they may get pissed when I tear apart a gas tank...

Thanks!

Steve

PS this is a truly awesome thread and has really inspired me. Thanks again!
 
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.
 
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