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


Go Back   > >

Alt Bike Culture Chopped, dropped, stretched, lifted, and otherwise cut up and put back together. The art and science of choppers, cruisers, lowriders and the vast world of mutant bicycles.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 07-29-16, 12:16 PM   #1
CrowSeph
On the crow's wings
Thread Starter
 
CrowSeph's Avatar
 
Join Date: Mar 2016
Location: South Italy
Bikes: The Crow(Road),The Miwokian(MTB),The RoadRage(Single/Fixed)
Posts: 211
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 49 Post(s)
a damn hole...

Hey Guys , i got another frame.
Is basically for trekking but i want to turn it in something special.

But there is a little problem:

The old owner drilled an hole in the top tube and he mounted another saddle (is something strange but is a saddle, i have no idea what the hell that idiot was thinking , if you wanna carry a kid but the proper seat SAFETY FIRST!).

I need to repair that hole , thanks god the frame is not in ALU.
My idea is to insert a little metal stick in that hole and welding near the holes and fill them.

Do you think is the best solution?

(i hope that is the correct section)
CrowSeph is offline   Reply With Quote
Old 07-29-16, 01:44 PM   #2
mulveyr 
Senior Member
 
mulveyr's Avatar
 
Join Date: Feb 2010
Location: In the wilds of NY
Bikes: Box Dog Pelican, Raleigh Sojourn, Specialized Secteur, 1991 Cannondale tandem
Posts: 1,532
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 23 Post(s)
Quote:
Originally Posted by CrowSeph View Post
Hey Guys , i got another frame.
Is basically for trekking but i want to turn it in something special.

But there is a little problem:

The old owner drilled an hole in the top tube and he mounted another saddle (is something strange but is a saddle, i have no idea what the hell that idiot was thinking , if you wanna carry a kid but the proper seat SAFETY FIRST!).

I need to repair that hole , thanks god the frame is not in ALU.
My idea is to insert a little metal stick in that hole and welding near the holes and fill them.

Do you think is the best solution?

(i hope that is the correct section)
Exactly how large is this hole? And where exactly is it located?
__________________
Knows the weight of my bike to the nearest 10 pounds.
mulveyr is offline   Reply With Quote
Old 07-29-16, 01:50 PM   #3
CrowSeph
On the crow's wings
Thread Starter
 
CrowSeph's Avatar
 
Join Date: Mar 2016
Location: South Italy
Bikes: The Crow(Road),The Miwokian(MTB),The RoadRage(Single/Fixed)
Posts: 211
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 49 Post(s)
Quote:
Originally Posted by mulveyr View Post
Exactly how large is this hole? And where exactly is it located?

is large ~5mm.
CrowSeph is offline   Reply With Quote
Old 07-29-16, 02:02 PM   #4
mulveyr 
Senior Member
 
mulveyr's Avatar
 
Join Date: Feb 2010
Location: In the wilds of NY
Bikes: Box Dog Pelican, Raleigh Sojourn, Specialized Secteur, 1991 Cannondale tandem
Posts: 1,532
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 23 Post(s)
If it's actually that small, you'd probably do more damage trying to "fix" it than you would just by leaving it alone. Cover it with aluminum tape and put a sticker over it, and call it a day.
__________________
Knows the weight of my bike to the nearest 10 pounds.
mulveyr is offline   Reply With Quote
Old 07-29-16, 02:09 PM   #5
CliffordK
Senior Member
 
CliffordK's Avatar
 
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Bikes:
Posts: 13,577
Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 2909 Post(s)
A good welder can fill a hole pretty easily. But, I agree, it may be entirely unnecessary (and will mess up the paint).
CliffordK is offline   Reply With Quote
Old 07-29-16, 02:28 PM   #6
CrowSeph
On the crow's wings
Thread Starter
 
CrowSeph's Avatar
 
Join Date: Mar 2016
Location: South Italy
Bikes: The Crow(Road),The Miwokian(MTB),The RoadRage(Single/Fixed)
Posts: 211
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 49 Post(s)
Quote:
Originally Posted by CliffordK View Post
A good welder can fill a hole pretty easily. But, I agree, it may be entirely unnecessary (and will mess up the paint).
i need to repaint becouse is already in bad condition.
I'll keep the tread updated , thanks guys for the infos.
CrowSeph is offline   Reply With Quote
Old 07-29-16, 02:58 PM   #7
CliffordK
Senior Member
 
CliffordK's Avatar
 
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Bikes:
Posts: 13,577
Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 2909 Post(s)
One question before you get it welded.

Do you know the age of the frame? Model?

Technically one is not supposed to weld Reynolds 531. I'm not sure about the common High-Ten steels used in bikes.

Newer alloys can be welded. Is the rest of the frame welded or brazed?
CliffordK is offline   Reply With Quote
Old 07-29-16, 03:54 PM   #8
CrowSeph
On the crow's wings
Thread Starter
 
CrowSeph's Avatar
 
Join Date: Mar 2016
Location: South Italy
Bikes: The Crow(Road),The Miwokian(MTB),The RoadRage(Single/Fixed)
Posts: 211
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 49 Post(s)
Quote:
Originally Posted by CliffordK View Post
One question before you get it welded.

Do you know the age of the frame? Model?

Technically one is not supposed to weld Reynolds 531. I'm not sure about the common High-Ten steels used in bikes.

Newer alloys can be welded. Is the rest of the frame welded or brazed?
I belive the model is "Expedition Trekking" from the brand "Maino" (an italian very cheap trademark).

The most newest model must be similar to this :link
..but the description say ALU , i don't think my frame is alu becouse is full of rust instead of oxide.

By the way , i have done a little work.
Is not a great work (i'm not a master welder) but tomorrow i'll cut that metal stick and use my grinding machine to hide everything. I just hope nothing is coming out.

As you can see the paint is awful, but is a part of the challenge to make that bike usable again.



i still feeling scared to think some child has spent some time sitting on that improvised seat....

Last edited by CrowSeph; 07-29-16 at 03:58 PM.
CrowSeph is offline   Reply With Quote
Old 07-30-16, 08:03 AM   #9
Juan Foote
LBKA (formerly punkncat)
 
Juan Foote's Avatar
 
Join Date: Jan 2010
Location: OTP South
Bikes: Spec Roubaix SL4, GT Traffic 1.0
Posts: 3,000
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 300 Post(s)
Since that is a steel frame...I don't know what you have in it or envision it's purpose being you mention it being a cheaper Italian brand...but if I were going to use that bike I would likely look at having a frame shop replace the top tube and powder coat it. I would want to take a long hard look at that frame inside and out to consider it's structural integrity. Also, consider that the heat from your weld likely changed the temper on that tube at a critical spot.
Juan Foote is offline   Reply With Quote
Old 07-30-16, 08:55 AM   #10
mulveyr 
Senior Member
 
mulveyr's Avatar
 
Join Date: Feb 2010
Location: In the wilds of NY
Bikes: Box Dog Pelican, Raleigh Sojourn, Specialized Secteur, 1991 Cannondale tandem
Posts: 1,532
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 23 Post(s)
Quote:
Originally Posted by punkncat View Post
Since that is a steel frame...I don't know what you have in it or envision it's purpose being you mention it being a cheaper Italian brand...but if I were going to use that bike I would likely look at having a frame shop replace the top tube and powder coat it. I would want to take a long hard look at that frame inside and out to consider it's structural integrity. Also, consider that the heat from your weld likely changed the temper on that tube at a critical spot.
Yup. The OP failed to mention that the hole apparently goes thought both sides of the TT. Since it looks like a bike that's been left out in the weather for a long, long time, I can't imagine it's even remotely worthwhile putting any effort into rebuilding it.
__________________
Knows the weight of my bike to the nearest 10 pounds.
mulveyr is offline   Reply With Quote
Old 07-30-16, 12:33 PM   #11
CrowSeph
On the crow's wings
Thread Starter
 
CrowSeph's Avatar
 
Join Date: Mar 2016
Location: South Italy
Bikes: The Crow(Road),The Miwokian(MTB),The RoadRage(Single/Fixed)
Posts: 211
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 49 Post(s)
Quote:
Originally Posted by mulveyr View Post
Yup. The OP failed to mention that the hole apparently goes thought both sides of the TT. Since it looks like a bike that's been left out in the weather for a long, long time, I can't imagine it's even remotely worthwhile putting any effort into rebuilding it.
The first image i posted show the red line pass into the tube , i was expecting that image was easy to understand... my fault!

Quote:
Originally Posted by punkncat View Post
Since that is a steel frame...I don't know what you have in it or envision it's purpose being you mention it being a cheaper Italian brand...but if I were going to use that bike I would likely look at having a frame shop replace the top tube and powder coat it. I would want to take a long hard look at that frame inside and out to consider it's structural integrity. Also, consider that the heat from your weld likely changed the temper on that tube at a critical spot.
The replacement of the top tube is not wort , is more easy to get a new frame.
For today i fixed that hole and the results seems pretty good , next phase is cheeck the integrity/security of the frame.
(if you got any advice to cheeck the internal state of the frame keep posting).




thanks guys for the infos. I'll keep you update.

Last edited by CrowSeph; 07-30-16 at 01:22 PM.
CrowSeph is offline   Reply With Quote
Old 07-31-16, 11:37 PM   #12
nimbuzz
Member
 
Join Date: Sep 2011
Bikes:
Posts: 26
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Get another frame--That's easy! You did a decent job but the temper is probably messed up.
nimbuzz is offline   Reply With Quote
Old 08-01-16, 08:09 AM   #13
CrowSeph
On the crow's wings
Thread Starter
 
CrowSeph's Avatar
 
Join Date: Mar 2016
Location: South Italy
Bikes: The Crow(Road),The Miwokian(MTB),The RoadRage(Single/Fixed)
Posts: 211
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 49 Post(s)
Quote:
Originally Posted by nimbuzz View Post
Get another frame--That's easy! You did a decent job but the temper is probably messed up.
thanks , i'm already looking for a new frame.
CrowSeph is offline   Reply With Quote
Old 08-01-16, 11:31 AM   #14
CliffordK
Senior Member
 
CliffordK's Avatar
 
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Bikes:
Posts: 13,577
Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 2909 Post(s)
Quote:
Originally Posted by nimbuzz View Post
Get another frame--That's easy! You did a decent job but the temper is probably messed up.
Now the work is done, paint it up and try it out.

As mentioned earlier, if it is Chromoly (any welded frame, or most frames from about 1990 or newer), then it will take the heat.

If it is Reynolds 531 or other older alloys, then it won't be designed for welding. Brazing is safer.

Nonetheless, the damage is mid-tube, and pretty low stress with the exception of hard front impact, so it may not ever cause problems under ordinary conditions.

It is quite possible that the OP could ride the frame for decades and never have any problems.
CliffordK is offline   Reply With Quote
Old 08-01-16, 11:32 AM   #15
nimbuzz
Member
 
Join Date: Sep 2011
Bikes:
Posts: 26
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
(Sorry for my English) [/QUOTE]

No problem--Your English is actually pretty good!

nimbuzz is offline   Reply With Quote
Old 08-01-16, 12:51 PM   #16
bbbean 
Senior Member
 
bbbean's Avatar
 
Join Date: Jul 2013
Location: Missouri
Bikes: Giant Propel, Cannondale SuperX, Univega Alpina Ultima
Posts: 1,632
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 92 Post(s)
Are you buying Chris Froome's descending bike?
__________________
www.beancotton.com
Formerly fastest rider in the grupetto, currently slowest guy in the peloton

bbbean is offline   Reply With Quote
Old 08-01-16, 03:02 PM   #17
CrowSeph
On the crow's wings
Thread Starter
 
CrowSeph's Avatar
 
Join Date: Mar 2016
Location: South Italy
Bikes: The Crow(Road),The Miwokian(MTB),The RoadRage(Single/Fixed)
Posts: 211
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 49 Post(s)
Quote:
Originally Posted by bbbean View Post
Are you buying Chris Froome's descending bike?
I don't think he's going to give me one of his frames (sadly )

Quote:
Originally Posted by nimbuzz View Post
(Sorry for my English)

No problem--Your English is actually pretty good!

Thanks
CrowSeph is offline   Reply With Quote
Old 05-23-17, 04:50 AM   #18
mizuko
Banned.
 
mizuko's Avatar
 
Join Date: May 2017
Bikes:
Posts: 10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
hi, there, looks good
mizuko 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 06:38 AM.


 
  • Ask a Question
    get answers from real people!
Click to start entering your question.
I HAVE A QUESTION