1937 shelby resurrection

GoldenMotor.com

perichbrothers

New Member
Jan 17, 2010
55
0
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san diego
Did this the other night...

Out of a pile of old car parts




totally different bike.
way better than the stock flute.


If you have an hour or 2 to kill, definitely worth it.

Also made up a quickee drop stand.


The more I play with this thing the more I like it.

TP
 

K.i.p

New Member
Nov 8, 2009
339
1
0
CNY
Terrific documentation and very nice work. Compliments on your sure footed aggressive fabrication technique and skill!
 

perichbrothers

New Member
Jan 17, 2010
55
0
0
san diego
Thanks K.i.p., we don't have cable so this is what I do to wind down!

So started on the tank.
I should be doing a hammered steel or aluminum tank but going to go fiberglass,
mainly cause i've got another donor frame and so does a friend,
so instead of spending a bunch of time and make a one-off,
the same time can be made to pop-out a bunch.

So...

used an original "peanut" tank for the outline...


screwed and glued them together...


After a couple minutes...


It's about an inch wider than the stock tank,
and there's a good sized gap like the stock tank,
but there will probably be some rubber cushion once its centered.

Anyway thats the start.

TP
 

BarelyAWake

New Member
Jul 21, 2009
7,194
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Maine
Fiberglass tanks are commonplace, particularly in boats. Methanol is bad news with polyester resin, so the older tanks are havin' a hard time w/it but West or Mas epoxies are far more resistant and deal just fine - provided the tank gets lined... which ya outa do anyway heh
 

perichbrothers

New Member
Jan 17, 2010
55
0
0
san diego
Well I took the inbetween pics with my cell phone and didn't send them yet.
but here's the two sides of the peanut.


Originally was going to make a female mold,
but figured out a vacuum-bag method using tape,
and it came out smooth enough to just fair out with a little bondo.
If I needed to make more than 2 than would have done the mold method,
cause they'd be perfect every time.

Now have to fg-tape them together
and make the filler and outlet.

TP
 

perichbrothers

New Member
Jan 17, 2010
55
0
0
san diego
Anyway here's a small update.
Fiberglass, especially epoxy, is fun but it sucks since there's alot of cure time.
Basically its work for an hour or 2, than let it sit til the next day, repeat.

Horrible layup, the mat was really messy, fortunately i've got a grinder.
hard to see but put inserts in for mounting, did an inlet and the outlet.

Prebondo...
Cant wait to throw it in there...
TP
 

silverbear

The Boy Who Never Grew Up
Jul 9, 2009
8,325
670
113
northeastern Minnesota
So, did you coat the wooden form with something to keep the fiberglass from bonding to the wood? And then gave a coat of epoxy with fiberglass cloth? And then when it was cured did you cut it along the mid section so that you got two halves? How did you hold the two halves together while bonding them back together into one? And instead of using cloth, you used mat fiber with epoxy to "glue" them together... with overlap so there was a kind of seam about how wide, a couple of inches? Once you sand or grind it down, then a little bondo here and there to smooth things out? I'm guessing and no doubt guessing wrong here and there. This looks like a good method. I have a Worksman paperboy back in Minnesota and may try this. Thanks for the photos! Yeah, I can't wait to see it on the Shelby.
SB
 

perichbrothers

New Member
Jan 17, 2010
55
0
0
san diego
So, did you coat the wooden form with something to keep the fiberglass from bonding to the wood? And then gave a coat of epoxy with fiberglass cloth? And then when it was cured did you cut it along the mid section so that you got two halves? How did you hold the two halves together while bonding them back together into one? And instead of using cloth, you used mat fiber with epoxy to "glue" them together... with overlap so there was a kind of seam about how wide, a couple of inches? Once you sand or grind it down, then a little bondo here and there to smooth things out? I'm guessing and no doubt guessing wrong here and there. This looks like a good method. I have a Worksman paperboy back in Minnesota and may try this. Thanks for the photos! Yeah, I can't wait to see it on the Shelby.
SB
the wood form was coated with shellac a bunch of times, than a thick coat of resin.
Car wax is a good mold release, a couple thick coats don't wipe off the last one.
Also fill up any holes with candle wax to smooth things up.

I misplaced my fg cloth and ended up using a heavy mat, which sucks to work with,
but its really thick so actually saved time since only one layer was needed.

My second plan was to make a 2 piece female mold,
(the hot dog pic woulda been the pieces)
(the first plan is what i ended up doing, the form was a little smaller to compensate for the FG)
If a layer of FG was layed up inside the "hot dog" pieces, after waxing it up a bunch,
that tank would be an exact duplicate of the form,
with very little grinding or bondo work like I had to do.

I use a filtered mask, but the best trick for grinding is using a fan.
Work right in front of the fan so it all blows to the neighbors yard, downwind.
Fortunately I have no close neighbors!

TP
 

silverbear

The Boy Who Never Grew Up
Jul 9, 2009
8,325
670
113
northeastern Minnesota
the wood form was coated with shellac a bunch of times, than a thick coat of resin.
Car wax is a good mold release, a couple thick coats don't wipe off the last one.
Also fill up any holes with candle wax to smooth things up.

I misplaced my fg cloth and ended up using a heavy mat, which sucks to work with,
but its really thick so actually saved time since only one layer was needed.

My second plan was to make a 2 piece female mold,
(the hot dog pic woulda been the pieces)
(the first plan is what i ended up doing, the form was a little smaller to compensate for the FG)
If a layer of FG was layed up inside the "hot dog" pieces, after waxing it up a bunch,
that tank would be an exact duplicate of the form,
with very little grinding or bondo work like I had to do.

I use a filtered mask, but the best trick for grinding is using a fan.
Work right in front of the fan so it all blows to the neighbors yard, downwind.
Fortunately I have no close neighbors!

TP
I'm getting a much clearer picture of the process. Thanks so much for sharing this...
SB
 

perichbrothers

New Member
Jan 17, 2010
55
0
0
san diego
Ok so got the tank in.

Did a quick patina paint to match the frame.

Holds a little bit more than the stock tank.
Still need some little things but at least the majority is done.

Still on its first tank,
but i've tried to idle it as much as possible.
The engine sounds alot better than when it was new,
the rattles and stuff are fading.
TP
 

dule

New Member
Dec 23, 2009
99
0
0
Zagreb
looks really nice, my plan is also to try and make a fiber gastank, like your work very much!

(a small OT - do you also have roots in this part of the world as me - East Europe, ex Yu somewhere?)
 

perichbrothers

New Member
Jan 17, 2010
55
0
0
san diego
Thanks alot guys!
Hope you were able to learn what to do or what not to do,
I have learned alot from the threads on here too.

We were bombin around on them last night,
love it!
Friend made the orange one out of a semi-road bike and we were drag racing,
mines way heavier but the small changes made a big difference.
Not sure if I want to change to the smaller gear though if the off the line changes.
TP

(a small OT - do you also have roots in this part of the world as me - East Europe, ex Yu somewhere?)
How did you know?
My grandfather was from Ljubljana!?
TP