Working on next KrupisVello "a la 1930" frame

[tere]

Some shaping tools: down tube arch manual ring roller with oak rolls and seat stay/top tube mold.

Down tube ''thorn'' welded and filed

Seat tube mitering

Frame jig

Patient process, tube mitering

Closer to shape

Drilling ventilation for inner rust prevention

Handmade dropouts with serial number

Dropouts in jig with chain stays

Tacked frame before final brazing and welding

 

[Uncle Stretch]

Really nice work. Want to see this finished. :mrgreen:

 

[RichL]

Nice work, looks real cool!

Rich

 

[Lowlife Lucas]

Nice!

 

[LukeTheJoker]

Wow! Nice work!
Digging your heavy duty frame jig...

Luke.

 

[ratdaddy]

that looks great! What size wheels are you going to use? Are you going to crimp the chainstays? If you are, I'd sure like to know how you do it. I've been trying to figure out how to do that so I can fit a wider tire on one of my frames.

 

[tere]

Thanks guys! I use 700c -28mm tire, don't need to crimp the chainstays. It may be difficult to keep geometry straight by crimping chainstays, but maybe I'm wrong, I have never done it. Below first ''a la 1930'' design frame.

 

[DeuceWheeler]

That's slick, terrific lines!

 

[user 135]

Re: Working on next KrupisVello "a la 1930" frame

I really like the double top tubes.

Sent from my ADR6425LVW using Tapatalk 2

 

[tere]

New useful DIY tool.



Dummy wheel useful to find location to brake bridge, chainstay bridge and check rear triangle geometry.

 

[LukeTheJoker]

Very cool tool!

Luke.

 

[upsfella]

Great fabrication skills, but i am not a fan of the shape. something seems off, maybe wheel base or height.. not really sure. :?

 

[tere]

Frame brazing


I use oxy-propane kit and flux coated brazing rods



flux residue remaining on the joint must be removed



Filed joint

 

[sensor]

Very nice work.

 

[g-ratter]

how about a short how to about brazing?

 

[tere]

DIY bicycle badge. New Krupis (toads) is ready to go on a trip !

 

[tere]

Next bike comleted!

 

[terohxr7]

Very cool! Great work!

 

[tere]

Drawing next model. What do you think?

 

[LukeTheJoker]

I love the extra loop in the looptail rear! Really nice!

Luke.