Discuz! Board

 找回密码
 立即注册
搜索
热搜: 活动 交友 discuz
查看: 3|回复: 0

Is this bad?

[复制链接]

9万

主题

9万

帖子

29万

积分

论坛元老

Rank: 8Rank: 8

积分
293221
发表于 2021-8-31 23:35:08 | 显示全部楼层 |阅读模式
Hey you may remember me from last month when I was asking about a defect in my bmx bike frame.Well I got a replacement but I noticed these similar welds.But they are not deep or anything. Just kind of on surface
Reply:Anyone?
Reply:The pict sucks. If you want feed back, a clear pict would really help. Also I wouldn't expect too many people are up super late at night. Usually you need to wait until most get off work the next day to start to get feed back from a lot of people..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Ill post a better pic when I get home.It seems that almost all bmx bikes have a similar looking pinholes in the welding?Can any of you guys show me what a "acceptable" and "bad" pinholes look like, so I can compare them?
Reply:If that pin hole is at the bottom of the tube? Don't worry about it, it is a drain hole to let condensation out.  Don’t pay any attention to meI’m just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:Originally Posted by CEPIf that pin hole is at the bottom of the tube? Don't worry about it, it is a drain hole to let condensation out.
Reply:I was just kidding you! Those pin holes happen to the best of welders, I'm surprised it wasn't taken care of before leaving the factory. Most likely not an issue, but it is a simple fix, take a die grinder, feather out the pin hole and re-weld. Piece of cake!Don’t pay any attention to meI’m just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:that little pinhole isn't gonna hurt anything on a bike frame, in my opinion
Reply:Originally Posted by CEPI was just kidding you! Those pin holes happen to the best of welders, I'm surprised it wasn't taken care of before leaving the factory. Most likely not an issue, but it is a simple fix, take a die grinder, feather out the pin hole and re-weld. Piece of cake!
Reply:See the light in the top of the photo, move the light onto the area you are tying to take the picture of, or block it, the camera is adjusting to the back light and that is causing the object you are trying to photo to be to dark, not lit.
Reply:Here are better picsThere's no hole going through the frame or anything like that. Here is a picture of the other side (inside)
Reply:Looks typical for a walmart bike. I hope these aren't high end big price tag bikes? The pinhole probably won't cause any problems ever, just dab some paint in the hole so it doesn't rust out if its not aluminum or something.
Reply:Who makes the frame?  Curious
Reply:1+ Who makes the frame?It probably won't cause a problem. But it sure does look bad.Ian TannerKawasaki KX450 and many other fine tools
Reply:Kink bikes.So you guys sure there won't be a problem?Snapping, breaking etc?
Reply:Can you guys show me some examples of a "bad" pinhole?
Reply:Relax.  You're bike is fine.  If it's not built by Moss Specialties (if they still do contract fab) or FBM (if they still build their own frames), it came out of the giant factory in Taiwan that makes 99% of the BMX bikes in America.Syncrowave 300Maxtron 450, S-52E, 30A
Reply:ride the dam thing..if it breaks return it and get something else....Of all the things I lost I miss my mind the most...I know just enough about everything to be dangerous......You cant cure stupid..only kill it...
Reply:If you guys can just show me a "bad" pinhole just so I know what is safe
Reply:http://www.met-tech.com/spindle-failure.htmlscroll down ,you'll see an example this one looks better , ride it, it probably never gonna brake.--------------------------------------------------------------www.becmotors.nlyup, I quit welding.. joined welder anonymous
Reply:DoNoHarmThat is a pretty cool report
Reply:So it won't "open up" or anything??
Reply:Originally Posted by Donoharmhttp://www.met-tech.com/spindle-failure.htmlscroll down ,you'll see an example this one looks better , ride it, it probably never gonna brake.
Reply:How much more assurance do you need?Syncrowave 300Maxtron 450, S-52E, 30A
Reply:Look your asking welders to show you an example of a "bad" pin hole.....there all bad a pinhole means something went wrong during the welding process what yours looks like is the robot that welded it  was programmed improperly and it turned the gas off before terminating the weld instead of continuing the flow untill just after termination some one probably put a dwell perameter in wrong your bike will be fine  you could run it over with a truck and all the tubing would bend before it broke ......its fine ride the pi$$ out of it1979 sa 200victor 100several bfh's several pitbulls (for holding down the floor)Originally Posted by BmxriderI don't think my frame has a "crater crack".
Reply:Originally Posted by VPTLooks typical for a walmart bike. I hope these aren't high end big price tag bikes? The pinhole probably won't cause any problems ever, just dab some paint in the hole so it doesn't rust out if its not aluminum or something.
Reply:Send it back, maybe they'll get it right next time...And make sure to tell them to QC the next one or it's coming back too.Why does the seat tube have a flat spot in it?Being on the ST it's nowhere near as dangerous as the first one, but I wouldn't keep it.Go look at a GT, Specialized, or even a crappy TREK.  None of them will have holes in the welds...And sadly enough they all most likely came from the same factory in Taiwan. Give em hell, summers coming!Buy American, or don't whine when you end up on the bread line.
Reply:Originally Posted by BmxriderHere are better pics
Reply:Originally Posted by WeldingMachineSend it back, maybe they'll get it right next time...And make sure to tell them to QC the next one or it's coming back too.Why does the seat tube have a flat spot in it?Being on the ST it's nowhere near as dangerous as the first one, but I wouldn't keep it.Go look at a GT, Specialized, or even a crappy TREK.  None of them will have holes in the welds...And sadly enough they all most likely came from the same factory in Taiwan. Give em hell, summers coming!
Reply:Good god man. You'll be fine! Pedal like hell and have fun. If you don't like it send it back. Short and simple.
Reply:Originally Posted by WeldingMachineSend it back, maybe they'll get it right next time...And make sure to tell them to QC the next one or it's coming back too.Why does the seat tube have a flat spot in it?Being on the ST it's nowhere near as dangerous as the first one, but I wouldn't keep it.Go look at a GT, Specialized, or even a crappy TREK.  None of them will have holes in the welds...And sadly enough they all most likely came from the same factory in Taiwan. Give em hell, summers coming!
Reply:Originally Posted by WelderBillThose pictures are not much better. IMOWhatever that bright light is above, Please move the frame to another location and take more pictures, and move the camera back away some.Take the frame outside in better light.
Reply:Bro.Move on.Miller Diversion 180Hobart Handler 140 (Soon to be replaced with Miller 211?)Miller Spectrum 625 Extreme
Reply:First of all... I've been riding BMX for over 15 years now, and that is something I've seen on plenty of bmx bikes. Secondly, that is terrible for a company as widely known as kink to be sending out with there name on it. I don't know who welds the parts for kink, but that is embarrassing to welders. A REAL bmx frame has beautiful welds on it, and many are welded in USA by bmxers themselves.     BUT, this "pinhole" will not cause you issues with the bike falling apart. If you have the skill, sure grind it out and weld it up, but I would just leave it be and forget about it. That weld almost looks like a mig weld its so bad. Kink used to be a quality company, as did many others. For bmx, and I mean hardcore bmx, not just jumping curbs, you should really stick to rider owned made in usa companies. I grew up in southern California, so i'm partial to S&M, but I've been riding t-1 frames for years now with s&m parts. If you have the choice and the money, send the frame back and purchase something else.  Otherwise, forget it. that's the least of your worries. Where do you live?  Doug, in Tulsa OKLincoln Idealarc Tig 300/300, Lincoln ranger 8, Lincoln LN-25, Miller Sidekick (keeps rockin!), Oxy/Acy torch, Miller XMT-304 with a Miller 60 series wire feeder and high freq. box, Profax positioner 8" chuck, Aaronson 3500# positioner 15" chuck
Reply:Sorry, just read that you live in Australia. Just ride it, you'll be fine. For a point of reference... if you remember back in the late 90's early 2000's, I had a few friends that rode Dirt Bros frames (Vic Murphy from San Diego). They all had bad welds, some parts were twisted, one had a missing weld on one seam... and none of them ever broke. They took some nasty falls and bounces off rails, dirt jumps, you name it. They took it all.  Don't worry, just ride it!Lincoln Idealarc Tig 300/300, Lincoln ranger 8, Lincoln LN-25, Miller Sidekick (keeps rockin!), Oxy/Acy torch, Miller XMT-304 with a Miller 60 series wire feeder and high freq. box, Profax positioner 8" chuck, Aaronson 3500# positioner 15" chuck
Reply:Its a shame you're in Australia, I wouldnt be happy with a frame like that here in the states, I had a sunday wave frame that looked beautiful and i NEVER had an issue with it, but Ive repaired one bike frame that broke right there at the head tube and it scared me how thin it was. I think it will probaly be fine but if it breaks switch companies for sure!Last edited by teckn9ne; 03-22-2013 at 06:43 PM.
Reply:Originally Posted by BmxriderWhat's a flat spot that's on the seat tube?
Reply:I'm surprised Kink let a frame go with a pinhole :\
Reply:They are buying frames by the container load from Taiwan. This is now representative of what sells in the $250-$450 complete bike range.
回复

使用道具 举报

您需要登录后才可以回帖 登录 | 立即注册

本版积分规则

Archiver|小黑屋|DiscuzX

GMT+8, 2025-12-26 02:28 , Processed in 0.201394 second(s), 18 queries .

Powered by Discuz! X3.4

Copyright © 2001-2021, Tencent Cloud.

快速回复 返回顶部 返回列表