Project 1921 Excelsior Fuel Tank

hammerweight · 2023-03-31

So here is the challenge, to reproduce a new more fuel tight tank for a very rare scoot...

W

WhizzbangK.C.

· #2 · 2 mo ago

Why? Nothing there a little Kreem won't fix.
Just kidding, I'll be following along on this one.

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hammerweight

Discussion Starter · #3 · 2 mo ago

Hahahaha

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dan r

· #4 · 2 mo ago

4

will you build it to look the part using more modern methods or brazed, maybe silver soldered oem joints?

did a copy of some 1915 tanks once, had these as a pattern...

Motor vehicle Engineering Automotive design Gas Machine

and that turned into...

Tire Wheel Hood Automotive tire Motor vehicle

and then...

Hood Automotive tire Motor vehicle Automotive design Vehicle

lessons learned... don't tack weld with a mig, use a tig if welding.

these turned out close but not a perfect copy of oem...

Tire Vehicle Wheel Motor vehicle Automotive tire

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Ratso

· #5 · 2 mo ago

Good to see a Hammerweight thread starting up.

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hammerweight

Discussion Starter · #6 · 2 mo ago

Nice job...

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hammerweight

Discussion Starter · #7 · 2 mo ago

dan r said:
will you build it to look the part using more modern methods or brazed, maybe silver soldered oem joints?

did a copy of some 1915 tanks once, had these as a pattern...
View attachment 275221

and that turned into...
View attachment 275222

and then...

View attachment 275223

lessons learned... don't tack weld with a mig, use a tig if welding.

these turned out close but not a perfect copy of oem...

Will be soldered.
All panels will be gas welded or "hammerwelded".

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hammerweight

Discussion Starter · #8 · 2 mo ago

2

Helmet Wood Bumper Automotive exterior Automotive design

Wood Artifact Natural material Fish Bumper

Starting the side panels...

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Dutch Dennoz

· #9 · 2 mo ago

Great job already !

@Dan , what lesson did you learn on tac welding with mig?

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dan r

· #10 · 2 mo ago

Dutch Dennoz said:
Great job already !

@Dan , what lesson did you learn on tac welding with mig?

i must first say, i am no pro at working sheet metal.
some may like and have good luck with a mig welder, not me.
what i found was the mig tack welds are harder than tig making them much more difficult to work the metal.
then there were the leaks to deal with after working hard welds.

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hammerweight

Discussion Starter · #11 · 2 mo ago

Dutch Dennoz said:
Great job already !

@Dan , what lesson did you learn on tac welding with mig?

Hey Dan
I tack with oxy acetylene and weld the same way.

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hammerweight

Discussion Starter · #12 · 2 mo ago

3

On we go...

Wood Gas Engineering Motor vehicle Machine

Motor vehicle Gas Automotive exterior Auto part Engineering

Automotive tire Automotive lighting Motor vehicle Vehicle Wood

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richbob

· #13 · 2 mo ago (Edited)

Is the tank going to be bigger ?
As your using original as a buck

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hammerweight

Discussion Starter · #14 · 2 mo ago

richbob said:
Is the tank going to be bigger ?
As your using original as a buck

Hey Richbob,
You are on the ball.
I am compensating for that very fact, even the rusty buck will not fit between the frame tubes! It makes things a little hellish as alterations must be made in the radii.
I do not have the frame on a constant basis so patterns are key.
Doug

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richbob

· #15 · 2 mo ago

I make lots of plugs/moulds for carbon fibre components (racing yachts ) so always making reductions to allow for skin thickness
I knew you had it under control 😉

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