ive heard of the uber fules doing all kinds of weird things. ive never seen it eat a hole through a glass tank though. (imagine the mess in the carbs??? holy crap!) i guess the real question should be what kind of gas are you using?? will it be for street or track use?? with pump gas, you should have a problem. if you go through airtech, definitely ask. im also trying to track the guy down i know who rode one of the hanson bikes to see if he knows who made the parts for that bike. if i find out, i post it here. it wasnt probably made in this country though, or its original stuff from the day or something insane. whats tony the knifes tank??? aint that glass?
There's also another Germany company that I can't remember right now. And then there's Peter Kytle (sp?) from the U.K.. Peter and Evan are gernerally regarded as the best pounders in the biz. If I remember correctly, one of Peter's CR750 tanks just sold on eBay for over $1,000.
One thing to remember is that thick fiberglass (like old Rickman tank thick) is more resiliant than the kind of aluminum that most pounders make their tanks from. But that shouldn't be a problem for a smooth-running CB750.
they often sell for about 1300 or so from what ive been told. if you want to do the real deal, you have to go alum. the factory cr's had alum tanks. if you want to spend the $$$ i can get you a contact. but most of that info has already been posted here. the tank shop ive heard alot of good things about and know people who buy form them.
sometimes his articles "bore" the hell out of me, haha..get it...doh! sometimes they are just right. in person, he's much more colorful. there was very cameron-esque responce in the readers column about how beer cans keep ridgid with beer in them.
I don't know how old this post is, but from what I've heard...
the fiberglass' resilience to the gas depends on the epoxy used to make it. There are two types a Polyester resin and something else...can't remember. I've also heard that there is some kind of coating, that once the tank is done, can be poured in, swished around and poured out. It leaves behind some kind of protective coating.
I don't think the gas would eat through any kind of fiberglass, these are just different things that help improve its life.