DIY Frame Build

[Jay_B]

Well will it at least have lighting bolts

 

Maybe i will consult with you and your artistic flare when i come to the painting....

[BogusOne]

Well will it at least have lighting bolts

Maybe i will consult with you and your artistic flare when i come to the painting....

 

Definitely go with something custom.... like such......

 

 

http://p.vitalmtb.com/photos/stories/2012/12/19/full_v10bones.jpg?1355946802

[Hairy]

Definitely go with something custom.... like such......

 

 

http://p.vitalmtb.com/photos/stories/2012/12/19/full_v10bones.jpg?1355946802

:clap: :clap: :clap:

[Flowta]

Thanks for all the advice so far guys, keep it coming....

 

Did a bit of digging around and as far as i can gather the steel used for all European bike frames is not available in S.A...

 

So am i now looking at Chromoly which is quite popular in frames and seems to be 1 or 2 possible suppliers. I have also made some enquires about Titanium tubing prices and availability. This could be a nice option as it is quite easy to work with and weld.

 

I also know somebody who builds beautiful racing kyaks out of carbon fibre so will look at maybe chatting to him about doing the rear triangle in Carbon, could be a nice addition and someone to learn from who know how to work with it all.

 

Hairy - The curved tube are more for cosmetics, i like the flowing lines it creates... As for the colour well, i cant reveal all my sectrets in one go

 

You can order tubing from here

http://www.framebuilding.com/

[quintonb]

Ceeway sell everything including the brazing rods and flux, if you going the lugged route.

Brilliant selection.

[Hairy]

Did you ever see the old Gary Fishers with the gratefull dead graphics

[BogusOne]

Did you ever see the old Gary Fishers with the gratefull dead graphics

 

http://mombat.org/GDeadSide.JPG

http://mombat.org/GDeadTT1.JPG

[Flowta]

http://mombat.org/GDeadSide.JPG

http://mombat.org/GDeadTT1.JPG

 

I want!!!!

[Steven Knoetze (sk27)]

Definitely go with something custom.... like such......

 

 

http://p.vitalmtb.com/photos/stories/2012/12/19/full_v10bones.jpg?1355946802

 

That is by far one of the best spray jobs I have seen.

Reminds me of this Evil Undead custom.

[Jay_B]

You can order tubing from here

http://www.framebuilding.com/

 

Not sure what the import duties would be though... anybody got some sort of knowledge with this?

[quintonb]

http://www.dutycalculator.com/

 

This should help you out.

Edited March 19, 2014 by quintonb

[Flowta]

 

 

Not sure what the import duties would be though... anybody got some sort of knowledge with this?

 

I'm not sure, I'll check with a frame builder I know.

 

Also maybe contact the guys from Salvo BMX, they use Chromoly on their frames.

 

Can ask them where they source it. They can also do the TIG welding for you.

[Josh0]

Check these guys out in Bergbron, for local CrMo suppliers.

http://www.ats-motorsport.co.za/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=103&category_id=53&option=com_virtuemart&Itemid=1

 

CrMo is a process to pre heat, weld and heat treat though. I am sure that you will get the hang of it with some tips from the net or the Salvo team.

 

Good luck, its a great idea!

[Brian Fantana]

Check these guys out in Bergbron, for local CrMo suppliers.

http://www.ats-motor...uemart&Itemid=1

 

CrMo is a process to pre heat, weld and heat treat though. I am sure that you will get the hang of it with some tips from the net or the Salvo team.

 

Good luck, its a great idea!

 

ATS motorsport supplied the AISI 4130 tubing I used to build a Sasol Mini-Baja frame for my final year project 7 years ago. The tubing they could supply back then will not be suitable for bicycle frame building. The wall thicknesses they can supply are far too thick. During my literature study I made a chart and if I recall correctly the lightest tube they could supply was still over 750g per meter.

 

The tubing they can supply is more focussed towards race car frames and rally car roll cages.

 

AISI4130 generally does not require heat treatment after normal MIG welding. Not for roll cages and and car frames at least.

 

From one of Engineering Materials books:

 

Aircraft engine parts, aircraft tubular frames, and racing car frames are made from AISI 4130 tubular sections. These types of structures are normally not heat treated after welding.

 

I also think that butted tubes will be required for a bike frame. This will keep weight lower while improving the weldability of the ends. Butted tubes need to be ordered in specific lengths, which means either special orders or order form a bicycle specific tube supplier.

 

I am definitely subscribed to this thread.

[Brian Fantana]

Check out the Caminade website for some steel goodness:

 

Website

 

A few photos of the one4all model, you can run this frame as a 160mm 26" or a 135mm 650b:

 

 

 

 

 

 

 

 

 

[Josh0]

ATS motorsport supplied the AISI 4130 tubing I used to build a Sasol Mini-Baja frame for my final year project 7 years ago. The tubing they could supply back then will not be suitable for bicycle frame building. The wall thicknesses they can supply are far too thick. During my literature study I made a chart and if I recall correctly the lightest tube they could supply was still over 750g per meter.

 

The tubing they can supply is more focussed towards race car frames and rally car roll cages.

 

AISI4130 generally does not require heat treatment after normal MIG welding. Not for roll cages and and car frames at least.

 

From one of Engineering Materials books:

 

 

 

I also think that butted tubes will be required for a bike frame. This will keep weight lower while improving the weldability of the ends. Butted tubes need to be ordered in specific lengths, which means either special orders or order form a bicycle specific tube supplier.

 

I am definitely subscribed to this thread.

 

Hey Brian

 

Cool stuff, I also competed in the Sasol Mini Baja for CUT for a few years. I am still bit involved in that. Sorry for referring an unsuitable link. NOTE OP

 

I wanted to do business with ATS a few years back to manufacture A-arms for my ATV, I just thought that they would also have thinner walled tubing. Through the research I did to manufacture these aforementioned A-arms, I found numerous articles that stated that when TIG welding CrMo, it is advisable to pre heat or to weld on a heated jig. The less heat input to produce the weld pool the better. Sometimes the internal stresses in the weld are so severe that it will actually crack itself. Thus heat treatment/stress relieving afterwards is recommended.

 

I dont have any experience with this though, just some wise words from random dudes on the net......

Edited March 19, 2014 by Josh_FSR