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making a carbon/kevlar tank question

Started by memper, December 27, 2012, 01:55:18 PM

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memper

December 27, 2012, 01:55:18 PM
So a buddy of mine is good with laying up fiberglass. So I had the notion of making a carbon and kevlar tank.
One question:
What to do about the three tubes on the underside? I know one is fuel, one is overflow and one is a breather. How do these tubes look inside?
I'm sure I could make a top breather like the old SS tanks and the fuel is just a barbed outlet. But what of the overflow? How does it work and do I need it? I've had several bikes that never had an overflow line.
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

ducpainter

#1
December 27, 2012, 02:00:04 PM
The over flow is more of a cap area drain than a fuel overflow.

It drains water from the recessed cap area as well as any spilled fuel.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


memper

#2
December 27, 2012, 02:14:12 PM Last Edit: December 27, 2012, 02:30:51 PM by memper
Ok. So how do I go about incorporating that? What do I need? Is it just a metal tube that runs vertically through the tank and its height is above the fill height?
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

Raux

#3
December 27, 2012, 02:17:38 PM
what you need to do IMO, is make a tank that mounts the stock fuel filler and fuel pump.

ducpainter

#4
December 27, 2012, 02:21:13 PM
Quote from: Raux on December 27, 2012, 02:17:38 PM
what you need to do IMO, is make a tank that mounts the stock fuel filler and fuel pump.


I don't think he cares about a pump...

his bike is a carbie.  :P
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


Raux

#5
December 27, 2012, 02:26:35 PM
Quote from: ducpainter on December 27, 2012, 02:21:13 PM
I don't think he cares about a pump...

his bike is a carbie.  :P
then ignore me. most people do

ducpainter

#6
December 27, 2012, 02:29:05 PM
Quote from: Raux on December 27, 2012, 02:26:35 PM
then ignore me. most people do
I don't... :-*

Quote from: memper on December 27, 2012, 02:14:12 PM
Ok. So how do I go about incorporating that? What do I need?
I'd look for an aftermarket flush mount cap like some of the custon Harleys use.

The guy that makes eti tanks has his custom machined. Maybe he'd sell you one.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


memper

#7
December 27, 2012, 02:38:23 PM
I do want a pump. Not keen on fuel just dumping into the carbs. I'm keeping the stock pump.
I was planning on usung the stock filler cap. Is all that inner stuff connected to it somehow?
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

ducpainter

#8
December 27, 2012, 03:10:20 PM
Quote from: memper on December 27, 2012, 02:38:23 PM
I do want a pump. Not keen on fuel just dumping into the carbs. I'm keeping the stock pump.
I was planning on usung the stock filler cap. Is all that inner stuff connected to it somehow?

On your tank there are steel tubes from the bottom that attach to the piece the cap bolts to. Some of the later FI tanks used copper tubing.

A stock steel carbie tank is actually 8 separate pieces, not including the hinge, the hinge plate, and threaded inserts. The cap area is one of them.

If you want an internal pump I'd get a junk FI tank and use the ring the cap bung inserts into.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


memper

#9
December 27, 2012, 03:33:38 PM
Ah so if I wanted to use the stock filler cap and guts I'd have some cutting to do? Or does it all unbolt? Maybe there's an exploded drawing so I can better visualize what we're talking about. Parts fische site maybe?
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

ducpainter

#10
December 27, 2012, 03:43:34 PM
Quote from: memper on December 27, 2012, 03:33:38 PM
Ah so if I wanted to use the stock filler cap and guts I'd have some cutting to do? Or does it all unbolt? Maybe there's an exploded drawing so I can better visualize what we're talking about. Parts fische site maybe?
No bolt on parts...it's all welded.

No exploded view either as none of the parts are available separately.

You are on somewhat uncharted ground...although you're not the first to walk there...if you catch my drift.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


Speeddog

#11
December 27, 2012, 04:22:38 PM
Point your buddy to this thread, see if he's really ready to volunteer:
http://www.bayarearidersforum.com/forums/showthread.php?t=145975

Long read, but from what I know about that kind of project, he covered all the bases.
- - - - - Valley Desmo Service - - - - -
Reseda, CA
(951) 640-8908

~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

memper

#12
December 27, 2012, 04:34:51 PM
It would be certainly easier to get some other bung with a simple screw top cap. But I gotta say, I love the ducati fillers. The color and bolt on ring really set it apart for me.

Is it necessary for an "overflow" line? Many bikes don't have them. Seems this is my hang up because I can find cool filler caps anywhere. But with the amount of H2O in fuel these days...
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

memper

#13
December 27, 2012, 04:37:01 PM
Awesome link. Thanks Nick!
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

ducpainter

#14
December 27, 2012, 04:43:52 PM
Quote from: memper on December 27, 2012, 04:34:51 PM
It would be certainly easier to get some other bung with a simple screw top cap. But I gotta say, I love the ducati fillers. The color and bolt on ring really set it apart for me.

Is it necessary for an "overflow" line? Many bikes don't have them. Seems this is my hang up because I can find cool filler caps anywhere. But with the amount of H2O in fuel these days...
The only danger is more water getting in the fuel from washing or riding in the rain if the cap doesn't seal completely.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


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