Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Paint removal for welding

Search
Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Paint removal for welding

Thread Tools
 
Search this Thread
 
Old 05-02-23, 01:52 PM
  #26  
Eric F 
Habitual User
 
Eric F's Avatar
 
Join Date: Jan 2020
Location: Altadena, CA
Posts: 7,997

Bikes: 2023 Niner RLT 9 RDO, 2018 Trek Procaliber 9.9 RSL, 2018 Storck Fascenario.3 Platinum, 2003 Time VX Special Pro, 2001 Colnago VIP, 1999 Trek 9900 singlespeed, 1977 Nishiki ONP

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 4957 Post(s)
Liked 8,099 Times in 3,833 Posts
Another bad idea on Larry's Big Pile of Bad Ideas.
__________________
"Swedish fish. They're protein shaped." - livedarklions
Eric F is offline  
Old 05-02-23, 01:53 PM
  #27  
Koyote
Senior Member
 
Join Date: Sep 2017
Posts: 7,887
Mentioned: 38 Post(s)
Tagged: 0 Thread(s)
Quoted: 6972 Post(s)
Liked 10,970 Times in 4,692 Posts
There are a couple people on this forum who need to learn the old adage "Buy once, cry once."

Larry apparently has a bunch of bikes, but they're all awful bikes -- don't fit him, break apart, etc. He buys used wheels that don't even fit any of his bikes. Stuff like that.

We have another poster who just started a thread in search of a comfy women's-specific saddle...She opened by explaining that she's tried a bunch of cheap saddles and none are comfortable. She also owns at least several old bikes, none of which seem to fit and perform perfectly. (Wow, what a surprise - cheap stuff isn't good.)

I'm not suggesting that a person has to always spend a pile of money to get something good...But I do wonder about people who buy bunches of cheap/nasty crap and then come here to share their problems.

Larry, you should probably throw all of your ****** bikes in the dumpster, save your money, and then walk into a store and buy One Good Bike.
Koyote is offline  
Likes For Koyote:
Old 05-02-23, 01:57 PM
  #28  
Eric F 
Habitual User
 
Eric F's Avatar
 
Join Date: Jan 2020
Location: Altadena, CA
Posts: 7,997

Bikes: 2023 Niner RLT 9 RDO, 2018 Trek Procaliber 9.9 RSL, 2018 Storck Fascenario.3 Platinum, 2003 Time VX Special Pro, 2001 Colnago VIP, 1999 Trek 9900 singlespeed, 1977 Nishiki ONP

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 4957 Post(s)
Liked 8,099 Times in 3,833 Posts
Originally Posted by Koyote
There are a couple people on this forum who need to learn the old adage "Buy once, cry once."

Larry apparently has a bunch of bikes, but they're all awful bikes -- don't fit him, break apart, etc. He buys used wheels that don't even fit any of his bikes. Stuff like that.

We have another poster who just started a thread in search of a comfy women's-specific saddle...She opened by explaining that she's tried a bunch of cheap saddles and none are comfortable. She also owns at least several old bikes, none of which seem to fit and perform perfectly. (Wow, what a surprise - cheap stuff isn't good.)

I'm not suggesting that a person has to always spend a pile of money to get something good...But I do wonder about people who buy bunches of cheap/nasty crap and then come here to share their problems.

Larry, you should probably throw all of your ****** bikes in the dumpster, save your money, and then walk into a store and buy One Good Bike.
Alternately, you could recue an old Huffy from a dumpster and fine-tune it until it rides just like a new pro-level race bike. That's what the smart folks are doing these days.
__________________
"Swedish fish. They're protein shaped." - livedarklions
Eric F is offline  
Likes For Eric F:
Old 05-02-23, 02:00 PM
  #29  
Koyote
Senior Member
 
Join Date: Sep 2017
Posts: 7,887
Mentioned: 38 Post(s)
Tagged: 0 Thread(s)
Quoted: 6972 Post(s)
Liked 10,970 Times in 4,692 Posts
Originally Posted by Eric F
Alternately, you could recue an old Huffy from a dumpster and fine-tune it until it rides just like a new pro-level race bike. That's what the smart folks are doing these days.
That's not realistic advice for most of us, because we're just not smart enough. I mean, fixing up an old Huffy is sorta like splitting the atom.
Koyote is offline  
Likes For Koyote:
Old 05-02-23, 02:07 PM
  #30  
Eric F 
Habitual User
 
Eric F's Avatar
 
Join Date: Jan 2020
Location: Altadena, CA
Posts: 7,997

Bikes: 2023 Niner RLT 9 RDO, 2018 Trek Procaliber 9.9 RSL, 2018 Storck Fascenario.3 Platinum, 2003 Time VX Special Pro, 2001 Colnago VIP, 1999 Trek 9900 singlespeed, 1977 Nishiki ONP

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 4957 Post(s)
Liked 8,099 Times in 3,833 Posts
Originally Posted by Koyote
That's not realistic advice for most of us, because we're just not smart enough. I mean, fixing up an old Huffy is sorta like splitting the atom.
Well...there is more than one way to fix up an old Huffy. https://www.bikeforums.net/classic-v...ispreloading=1
One takes a LOT more ingenuity and functioning brain cells than the other.
__________________
"Swedish fish. They're protein shaped." - livedarklions
Eric F is offline  
Likes For Eric F:
Old 05-02-23, 02:26 PM
  #31  
icemilkcoffee 
Senior Member
 
icemilkcoffee's Avatar
 
Join Date: Aug 2009
Posts: 2,395
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 1562 Post(s)
Liked 1,734 Times in 974 Posts
Originally Posted by LarrySellerz
thanks! I ended up going this route. I didn’t know how to take off the cranks/chainring and it got kind of epoxied as well, but I wiped it pretty well and I guess I’ll see what happens tomorrow. Honestly I’m kind of disappointed in the quality of this repair, really should have taken the chainring off instead of working around it. Live and learn I guess.
This is the third act where tragedy turns into comedy. While you got the Loctite goo handy, just glue a bunch of zip ties onto the 650c wheels to turn them into 700c wheels.
icemilkcoffee is offline  
Likes For icemilkcoffee:
Old 05-02-23, 02:30 PM
  #32  
squirtdad
Senior Member
 
squirtdad's Avatar
 
Join Date: Jul 2006
Location: San Jose (Willow Glen) Ca
Posts: 9,847

Bikes: Kirk Custom JK Special, '84 Team Miyata,(dura ace old school) 80?? SR Semi-Pro 600 Arabesque

Mentioned: 106 Post(s)
Tagged: 0 Thread(s)
Quoted: 2338 Post(s)
Liked 2,827 Times in 1,543 Posts
Originally Posted by Eric F
Alternately, you could recue an old Huffy from a dumpster and fine-tune it until it rides just like a new pro-level race bike. That's what the smart folks are doing these days.
Originally Posted by Eric F
Well...there is more than one way to fix up an old Huffy. https://www.bikeforums.net/classic-v...ispreloading=1
One takes a LOT more ingenuity and functioning brain cells than the other.
I like the huffy camp thread, but

no low end frame will ever ride like a high end frame not matter what components you put on it.

I have seen the "frame is frame" "frame is something to hang parts on" thinking to much recently,

frame is the foundation to ride and handling
__________________
Life is too short not to ride the best bike you have, as much as you can
(looking for Torpado Super light frame/fork or for Raleigh International frame fork 58cm)



squirtdad is offline  
Likes For squirtdad:
Old 05-02-23, 02:35 PM
  #33  
Eric F 
Habitual User
 
Eric F's Avatar
 
Join Date: Jan 2020
Location: Altadena, CA
Posts: 7,997

Bikes: 2023 Niner RLT 9 RDO, 2018 Trek Procaliber 9.9 RSL, 2018 Storck Fascenario.3 Platinum, 2003 Time VX Special Pro, 2001 Colnago VIP, 1999 Trek 9900 singlespeed, 1977 Nishiki ONP

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 4957 Post(s)
Liked 8,099 Times in 3,833 Posts
Originally Posted by squirtdad
I like the huffy camp thread, but

no low end frame will ever ride like a high end frame not matter what components you put on it.

I have seen the "frame is frame" "frame is something to hang parts on" thinking to much recently,

frame is the foundation to ride and handling
Agreed 100%. There is no illusion by AMCO that his Huffy will ride like anything but a Huffy. His self-deprecating humor, and understanding of the ridiculousness of the project, is what makes the story so entertaining. The ingenuity for resolving problems is the spice that gives it an extra punch of flavor. It's been a group effort, at times.

The self-proclaimed Huffy genius, however, seems to be all about the illusion.
__________________
"Swedish fish. They're protein shaped." - livedarklions
Eric F is offline  
Old 05-02-23, 02:39 PM
  #34  
smd4
Senior Member
 
Join Date: Dec 2020
Location: Wake Forest, NC
Posts: 5,795

Bikes: 1989 Cinelli Supercorsa

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 3514 Post(s)
Liked 2,927 Times in 1,776 Posts
Originally Posted by LarrySellerz
Honestly I’m kind of disappointed in the quality of this repair, really should have taken the chainring off instead of working around it. Live and learn I guess.
Well, not so far.

Last edited by smd4; 05-02-23 at 02:45 PM.
smd4 is offline  
Likes For smd4:
Old 05-02-23, 03:18 PM
  #35  
Koyote
Senior Member
 
Join Date: Sep 2017
Posts: 7,887
Mentioned: 38 Post(s)
Tagged: 0 Thread(s)
Quoted: 6972 Post(s)
Liked 10,970 Times in 4,692 Posts
Originally Posted by Eric F
The self-proclaimed Huffy genius, however, seems to be all about the illusion delusion.
fify.
Koyote is offline  
Likes For Koyote:
Old 05-02-23, 03:37 PM
  #36  
LarrySellerz
Senior Member
Thread Starter
 
Join Date: Mar 2021
Posts: 1,995
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 2700 Post(s)
Liked 486 Times in 351 Posts
Koyote this is/was a fancy road racing bike, not a clunker. I only got one layer of cloth and there was so much epoxy I don’t think I got a nice clean wrap, but what’s done is done. The “wiping” I did was of the epoxy that got on the drivechain

as long as this joint fails before another weld I’m happy, I don’t think it will make me crash when it fails. Other welds, yeah can’t say that. So I guess in a since it’s good that the repair isn’t super robust, since it’s hard to say how much I’ve damaged the other welds in the 15 or so miles I’ve ridden it like this.

and yes there are 2 zip ties under the glue which are going to be structural/permanent, they are fancy weather/UV resistant ones. Or atleast I think they are

Last edited by LarrySellerz; 05-02-23 at 03:41 PM.
LarrySellerz is offline  
Old 05-02-23, 03:47 PM
  #37  
Eric F 
Habitual User
 
Eric F's Avatar
 
Join Date: Jan 2020
Location: Altadena, CA
Posts: 7,997

Bikes: 2023 Niner RLT 9 RDO, 2018 Trek Procaliber 9.9 RSL, 2018 Storck Fascenario.3 Platinum, 2003 Time VX Special Pro, 2001 Colnago VIP, 1999 Trek 9900 singlespeed, 1977 Nishiki ONP

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 4957 Post(s)
Liked 8,099 Times in 3,833 Posts
Originally Posted by LarrySellerz
Koyote this is/was a fancy road racing bike, not a clunker. I only got one layer of cloth and there was so much epoxy I don’t think I got a nice clean wrap, but what’s done is done. The “wiping” I did was of the epoxy that got on the drivechain

as long as this joint fails before another weld I’m happy, I don’t think it will make me crash when it fails. Other welds, yeah can’t say that. So I guess in a since it’s good that the repair isn’t super robust, since it’s hard to say how much I’ve damaged the other welds in the 15 or so miles I’ve ridden it like this.

and yes there are 2 zip ties under the glue which are going to be structural/permanent, they are fancy weather/UV resistant ones. Or atleast I think they are
The instability of this joint will put additional strain on the other joints, some of which can lead to bad things when they fail.
__________________
"Swedish fish. They're protein shaped." - livedarklions
Eric F is offline  
Old 05-02-23, 03:49 PM
  #38  
smd4
Senior Member
 
Join Date: Dec 2020
Location: Wake Forest, NC
Posts: 5,795

Bikes: 1989 Cinelli Supercorsa

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 3514 Post(s)
Liked 2,927 Times in 1,776 Posts
Originally Posted by LarrySellerz
and yes there are 2 zip ties under the glue which are going to be structural/permanent, they are fancy weather/UV resistant ones. Or atleast I think they are
Most of what Larry writes suggest it, but if this phrase doesn’t indicate chain-yanking, I don’t know what does.
smd4 is offline  
Old 05-02-23, 03:52 PM
  #39  
maddog34
Senior Member
 
maddog34's Avatar
 
Join Date: Jul 2015
Location: NW Oregon
Posts: 2,975

Bikes: !982 Trek 930R Custom, Diamondback ascent with SERIOUS updates, Fuji Team Pro CF and a '09 Comencal Meta 5.5

Mentioned: 15 Post(s)
Tagged: 1 Thread(s)
Quoted: 1299 Post(s)
Liked 739 Times in 534 Posts
Originally Posted by LarrySellerz
Koyote this is/was a fancy road racing bike, not a clunker. I only got one layer of cloth and there was so much epoxy I don’t think I got a nice clean wrap, but what’s done is done. The “wiping” I did was of the epoxy that got on the drivechain

as long as this joint fails before another weld I’m happy, I don’t think it will make me crash when it fails. Other welds, yeah can’t say that. So I guess in a since it’s good that the repair isn’t super robust, since it’s hard to say how much I’ve damaged the other welds in the 15 or so miles I’ve ridden it like this.

and yes there are 2 zip ties under the glue which are going to be structural/permanent, they are fancy weather/UV resistant ones. Or at least I think they are
did ya at least Rough Up the Paint before you epoxied over it? Sure doesn't look like you did that important step.

remember to do that the next time this crack opens up, ok?

Progress.. one baby step at a time.

if you make it thru one ride without that mess failing,.... go buy a lottery ticket on the next ride!
then you can quit ghetto-repairing bikes and break brand new ones.

chainstay-to-BB will be the next break.. probably... you experience a sudden sinking feeling....

Last edited by maddog34; 05-02-23 at 03:57 PM.
maddog34 is offline  
Old 05-02-23, 03:55 PM
  #40  
smd4
Senior Member
 
Join Date: Dec 2020
Location: Wake Forest, NC
Posts: 5,795

Bikes: 1989 Cinelli Supercorsa

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 3514 Post(s)
Liked 2,927 Times in 1,776 Posts
Originally Posted by maddog34
did ya at least Rough Up the Paint before you epoxied over it? Sure doesn't look like you did that important step.
Missing that step no doubt doomed this project.
smd4 is offline  
Old 05-02-23, 03:56 PM
  #41  
Eric F 
Habitual User
 
Eric F's Avatar
 
Join Date: Jan 2020
Location: Altadena, CA
Posts: 7,997

Bikes: 2023 Niner RLT 9 RDO, 2018 Trek Procaliber 9.9 RSL, 2018 Storck Fascenario.3 Platinum, 2003 Time VX Special Pro, 2001 Colnago VIP, 1999 Trek 9900 singlespeed, 1977 Nishiki ONP

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 4957 Post(s)
Liked 8,099 Times in 3,833 Posts
Originally Posted by smd4
Missing that step no doubt doomed this project.
Right. Because it would have been all good otherwise.
__________________
"Swedish fish. They're protein shaped." - livedarklions
Eric F is offline  
Likes For Eric F:
Old 05-02-23, 04:21 PM
  #42  
Bald Paul
Senior Member
 
Bald Paul's Avatar
 
Join Date: Sep 2017
Location: Upstate SC
Posts: 1,709
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 825 Post(s)
Liked 1,659 Times in 784 Posts
Originally Posted by LarrySellerz
If I keep riding it as is, what’s the likely failure mode?
Death.
Bald Paul is offline  
Likes For Bald Paul:
Old 05-02-23, 04:23 PM
  #43  
LarrySellerz
Senior Member
Thread Starter
 
Join Date: Mar 2021
Posts: 1,995
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 2700 Post(s)
Liked 486 Times in 351 Posts
Darn I was thinking that I needed to sand it but totally forgot... and they are the fancy cable ties
https://www.mcmaster.com/product/70215K96

you can’t possibly tell that I forgot to sand it from the picture though lol. I even pumped out the epoxy, was being professional about it. the epoxy is probably about a thousand dollars, fancy stuff.

Last edited by LarrySellerz; 05-02-23 at 04:34 PM.
LarrySellerz is offline  
Old 05-02-23, 04:30 PM
  #44  
smd4
Senior Member
 
Join Date: Dec 2020
Location: Wake Forest, NC
Posts: 5,795

Bikes: 1989 Cinelli Supercorsa

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 3514 Post(s)
Liked 2,927 Times in 1,776 Posts
Originally Posted by LarrySellerz
I even pumped out the epoxy, was being professional about it.
Oh, it definitely shows.
smd4 is offline  
Likes For smd4:
Old 05-02-23, 04:32 PM
  #45  
shelbyfv
Expired Member
 
shelbyfv's Avatar
 
Join Date: Jun 2007
Location: TN
Posts: 11,547
Mentioned: 37 Post(s)
Tagged: 0 Thread(s)
Quoted: 3674 Post(s)
Liked 5,441 Times in 2,764 Posts
I'm convinced Darwin has his hand on Larry's bare shoulder, guiding him in the direction most beneficial to the species.
shelbyfv is offline  
Likes For shelbyfv:
Old 05-02-23, 04:38 PM
  #46  
Bill Kapaun
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 13,875

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds. 2019 Giant Explore E+3

Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 1795 Post(s)
Liked 1,271 Times in 877 Posts
Interesting your using Stycast 2850?
I used to use it years ago for encapsulating electronic parts in optical oceanographic instruments I built.
It was a highly thermo-conductive insulating epoxy we used because we wanted the electronics to respond quickly to temperature changes as they were being lowered to depth.
It basically, for lack of a better term, has lots of ground glass in it.
I'd find it difficult to believe that there aren't "stronger" products out there.
Bill Kapaun is offline  
Old 05-02-23, 04:48 PM
  #47  
LarrySellerz
Senior Member
Thread Starter
 
Join Date: Mar 2021
Posts: 1,995
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 2700 Post(s)
Liked 486 Times in 351 Posts
Did you use the black stuff? The blue stuff 2850ft bl is for electrical insulation and I was hoping that the black stuff would be slightly stronger.

I chose it because it looked like the strongest stuff I had lying around.

the epoxy is a class two reproductive hazard, since we are bringing Darwin into this
LarrySellerz is offline  
Old 05-02-23, 05:01 PM
  #48  
ThermionicScott 
working on my sandal tan
 
ThermionicScott's Avatar
 
Join Date: Aug 2011
Location: CID
Posts: 22,629

Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)

Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
Quoted: 3871 Post(s)
Liked 2,568 Times in 1,579 Posts
Originally Posted by shelbyfv
I'm convinced Darwin has his hand on Larry's bare shoulder, guiding him in the direction most beneficial to the species.
More like that angel that watches over children and drunks.
__________________
Originally Posted by chandltp
There's no such thing as too far.. just lack of time
Originally Posted by noglider
People in this forum are not typical.
RUSA #7498
ThermionicScott is offline  
Likes For ThermionicScott:
Old 05-02-23, 05:13 PM
  #49  
Koyote
Senior Member
 
Join Date: Sep 2017
Posts: 7,887
Mentioned: 38 Post(s)
Tagged: 0 Thread(s)
Quoted: 6972 Post(s)
Liked 10,970 Times in 4,692 Posts
Originally Posted by LarrySellerz
Koyote this is/was a fancy road racing bike, not a clunker.
Accent on the word was.

Never change, Larry.
Koyote is offline  
Old 05-02-23, 05:20 PM
  #50  
LarrySellerz
Senior Member
Thread Starter
 
Join Date: Mar 2021
Posts: 1,995
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 2700 Post(s)
Liked 486 Times in 351 Posts
Originally Posted by ThermionicScott
More like that angel that watches over children and drunks.
im like 5 months sober from alcohol
LarrySellerz is offline  
Likes For LarrySellerz:


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.