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Ti Monster Frame*Completed Pics*Headed for DucStock

Started by Randy@StradaFab, August 22, 2011, 06:15:02 PM

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Monsterlover

#181
February 21, 2013, 02:50:52 PM
How do you keep the air away from the backs of the welds on that tubing when you can't flood the area with argon?
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

Speeddog

#182
February 21, 2013, 02:52:35 PM
Quote from: Monsterlover on February 21, 2013, 02:50:52 PM
How do you keep the air away from the backs of the welds on that tubing when you can't flood the area with argon?

I'd say he's backfilling through that brass QD fitting on the bushing on the top of the steering head tube.
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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 ~~~

Monsterlover

#183
February 21, 2013, 02:55:08 PM
Quote from: Speeddog on February 21, 2013, 02:52:35 PM
I'd say he's backfilling through that brass QD fitting on the bushing on the top of the steering head tube.

I saw that but didn't quite make the connection.  So, wherever you're going to make a connection, you just drill a hole to let the gas pass through on the inside?

Note to self.
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

Speeddog

#184
February 21, 2013, 03:13:07 PM
That's what I would do.
I'd also tape up any other unwelded joints to keep the leakage down to a minimum.

But whether that's actually what Randy does, well.... maybe he'll tell us.
Or maybe already has, and I'm remembering.  [laugh]

- - - - - 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 ~~~

Randy@StradaFab

#185
February 21, 2013, 03:35:26 PM
You guys already figured it out... ;) It's pretty hard to get it everywhere. I know some guys that weld Ti in heat exchangers for a living and they don't worry about the back side of the weld. Just like everything else it depends on who you talk to. If you want maximum strength it needs to be flooded on the back side IMHO.

Monsterlover

#186
February 21, 2013, 06:23:36 PM
Quote from: Randy@StradaFab on February 21, 2013, 03:35:26 PM
You guys already figured it out... ;) It's pretty hard to get it everywhere. I know some guys that weld Ti in heat exchangers for a living and they don't worry about the back side of the weld. Just like everything else it depends on who you talk to. If you want maximum strength it needs to be flooded on the back side IMHO.

I agree. Any oxygen that gets to the weld, even the back side, just f's it all up.

Its hard to take a chance on a frame failure at triple digit speeds. You're doing the right thing [thumbsup]
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

oorahduc

#187
June 23, 2014, 12:40:24 PM
Any updates on the SC Ti frame? That SR4S is a superb work of art.

Randy@StradaFab

#188
June 29, 2014, 02:25:05 PM
QuoteAny updates on the SC Ti frame? That SR4S is a superb work of art.

  It is complete and the owner has had it a couple of months. I should have pics of the completed bike soon. From what I have seen it is amazing! A few of the build pics:





Skybarney

#189
June 30, 2014, 11:33:20 AM
I think I just blew the zipper on my jeans!   [thumbsup] [drool]
Two things I don't do.  Keyboard bullies and hypocrites.
Feel free to PM me if needed, otherwise you will find me elsewhere.

1.21GW

#190
June 30, 2014, 12:56:33 PM
Quote from: Randy@StradaFab on June 29, 2014, 02:25:05 PM


I wouldn't even finish that and just hang it in a museum as is.  Simply beautiful.  Deserves a tear:  :'(
"I doubt I'm her type---I'm sure she's used to the finer things.  I'm usually broke. I'm kinda sloppy…"

Randy@StradaFab

#191
June 30, 2014, 07:42:17 PM
QuoteI wouldn't even finish that and just hang it in a museum as is.  Simply beautiful.  Deserves a tear:

  Just wait until you see it complete! It is something else!

Jonathan

#192
July 18, 2014, 10:25:44 PM
Randy, are your fixtures one off? How are you designing the frames, in Cad software?

Nice work btw. I weld bicycle frames and back purge exactly like you do.

Randy@StradaFab

#193
July 20, 2014, 08:16:29 AM
QuoteRandy, are your fixtures one off? How are you designing the frames, in Cad software?

  I build the jig to fit a stock frame, so there is no need to re-design anything. The stock frames are very well triangulated and I am not looking to use super thin wall thicknesses like a bicycle frame. On the frame in the picture I did design the mount for the single shock.

TheArsalan

#194
August 13, 2014, 09:45:09 AM
How long did the Monster frame take you to finish?
I think this needs to be put into production..
2000 M900ie

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