Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Mountain Biking Mountain biking is one of the fastest growing sports in the world. Check out this forum to discuss the latest tips, tricks, gear and equipment in the world of mountain biking.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 03-30-06, 07:27 PM   #1
Chone
Senior Member
Thread Starter
 
Join Date: Jan 2006
Bikes:
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Do you think a steel frame can be welded back together?

I'm asking this because sadly the frame on my KHS Sport is just about to give up the ghost, the down tube is well... torn apart (right before the welding point) and while the bike is still rideable it will be just a matter of time before the tube rips apart completely.

See, I'm getting a new bike anyways for the rough stuff but I'd like to keep my current bike as a backup as its not bad, you think I could have someone weld the frame back together (or reinforce it with steel or something).

Will I need a new frame to save this bike? How would an okay steel frame go for, I don't need top of the line, just something rideable, around the 70$-150$ price range, I'm not asking for much but...

P.S: Oh by the way and to avoid an additional topics, when I saw my brother's beat up tennis racquets (2 titanium, one aluminum) I noticed the titanium racquets were not bent at all, they were pretty banged up but had little shreds and rips (don't know how to explain it) while the alum racquet was bent, I suppose titanium doesn't bend or something, wouldn't that make it a superb wheel material?
Chone is offline   Reply With Quote
Old 03-30-06, 07:36 PM   #2
wvxc
Montani Semper Liberi
 
wvxc's Avatar
 
Join Date: Oct 2005
Location: Southern WV
Bikes: Specialized Hardrock
Posts: 248
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Low heat, man, low heat. It won't be as strong, the heat fatigues metal. If you have someone do it they need to use as low a setting they can to get the weld to hold. What type of metal are you dealing with?

Let me add if you are going to jump this bike I would get a new frame.
wvxc is offline   Reply With Quote
Old 03-30-06, 07:59 PM   #3
Chone
Senior Member
Thread Starter
 
Join Date: Jan 2006
Bikes:
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I won't jump it, strictly recreational XC and small-time trialsy stuff, I will use my future new bike for all my "freeride" and dirtjumping needs (I'm thinking of a Kona Shred and upgrading it piece by piece as time goes on but I'm skeptical) so I don't need that it is super strong, just enough that it will hold up for your average trail.
Chone is offline   Reply With Quote
Old 03-30-06, 08:13 PM   #4
Eatadonut
You know you want to.
 
Eatadonut's Avatar
 
Join Date: Jun 2005
Location: Norman, Oklahoma
Bikes: Pinarello Prince, 1980's 531 steel fixie commuter, FrankenMTB
Posts: 1,896
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
sounds a bit dodgy, but if the tear's not too bad...go for it. just wear a helmet, and be careful.


check out nashbar's MTB 2 frame. $75+shipping for your standard steel frame.
__________________
Weather today: Hot. Humid. Potholes.
Eatadonut is offline   Reply With Quote
Old 04-01-06, 12:20 PM   #5
Chone
Senior Member
Thread Starter
 
Join Date: Jan 2006
Bikes:
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Well, the tear IS bad actually, so much in fact the down tube is now completely torn apart from the head tube (I think that what it is called), well, I'm not sweating it, I'm getting a new bike pretty soon (probably a DJ hardtail kind of bike) and will probably get a nice frame for that bike eventually to make it my lightweight XC bike.

P.S: I already took pictures and all, if only I could find that damn USB cable I'd show them to you.
Chone is offline   Reply With Quote
Old 04-01-06, 05:53 PM   #6
hooligan
Just give'er.
 
hooligan's Avatar
 
Join Date: Nov 2003
Location: Toronto
Bikes: 04 Scrap
Posts: 1,890
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Trials? on a welded frame like that? No way. Like, wheelies/manuals, at most, if you are getting it welded...
hooligan is offline   Reply With Quote
Old 04-01-06, 06:43 PM   #7
never
Custom User
 
never's Avatar
 
Join Date: Jul 2005
Location: T0L0K0
Bikes:
Posts: 3,739
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I recently snapped the chainstay/drop-out on my singlespeed bike...while pedaling up a hill too.

It basically snapped right beside the weld, any future repairs will just weaken the area so I'm not going to bother fixing it.

never is offline   Reply With Quote
Old 04-02-06, 09:08 AM   #8
greybeard87
Senior Member
 
greybeard87's Avatar
 
Join Date: Aug 2005
Location: Clayton, NC
Bikes: Bridgestone Mile 112 (fixie); Early 70's Bottechia; 74 Schwinn Continental; Mercier Draco AL; Corratec Freeride MTB; Custom GT Azkar SS
Posts: 286
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by never
I recently snapped the chainstay/drop-out on my singlespeed bike...while pedaling up a hill too.

It basically snapped right beside the weld, any future repairs will just weaken the area so I'm not going to bother fixing it.

That break is pretty clean and easily repairable by a good TIG welder........
greybeard87 is offline   Reply With Quote
Old 04-02-06, 10:02 AM   #9
ken cummings
Senior Member
 
ken cummings's Avatar
 
Join Date: Dec 2005
Location: northern California
Bikes: Bruce Gordon BLT, Cannondale parts bike, Ecodyne recumbent trike, Counterpoint Opus 2, miyata 1000
Posts: 5,601
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by never
I recently snapped the chainstay/drop-out on my singlespeed bike...while pedaling up a hill too.

It basically snapped right beside the weld, any future repairs will just weaken the area so I'm not going to bother fixing it.

That drop-out looks more like it was brazed into place than welded. In which case it would be quite repairable. A competant bicycle repair shop would gently heat the brazed connections holding the two pieces of the drop-out and remove the fragments thenm braze in a new drop-out. I had it done to my old Volpe and rode it for several more years. The advantage of most brazing is that it is done at a temperature that will not affect the alloys in the drop-out and frame tubes. Brazing is like soldering wires together. Welding commonly melts the metal of the two parts being joined and can heat damage the metal. I would check with the people/company that built the bike about such extreme repairs.
ken cummings is offline   Reply With Quote
Old 04-02-06, 05:22 PM   #10
sngltrackdufus
Banned.
 
sngltrackdufus's Avatar
 
Join Date: Sep 2005
Location: tartarus
Bikes: MTB's & a Cyclocross
Posts: 1,258
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yes , they can be welded back together WITHOUT additional problems, along with Al.
sngltrackdufus is offline   Reply With Quote
Old 04-02-06, 07:48 PM   #11
FF 6800
Senior Member
 
Join Date: Aug 2005
Location: Long Beach, California
Bikes: 2005 Specialized hardrock pro... pike426, e.13 drs, fsa gap crank, formula k24's, and some more/2006 Scattante R-660 easton circuit wheels.
Posts: 594
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
yes, it can be welded together if some parts are reinforced depending on how bad the damage was.
FF 6800 is offline   Reply With Quote
Old 04-02-06, 10:09 PM   #12
sngltrackdufus
Banned.
 
sngltrackdufus's Avatar
 
Join Date: Sep 2005
Location: tartarus
Bikes: MTB's & a Cyclocross
Posts: 1,258
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Heh, well naturally if the tubing is all twisted & contorted it would just be a waste of time.
What do you mean by "reinforced"?
sngltrackdufus is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 09:11 PM.