Bicycle tubing dent removal
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- čas přidán 1. 07. 2020
- How I use air pressure and heat to remove dents in a bicycle top tube.
I made a bung with a compressed air fitting matching the size of my 26.4mm seat tube and a plug for the head post so I could pressurize the top tube. For heat I used a small oxy/propane torch. This was my first effort and overall I was very pleased with the results. I believe that with the proper plugs I can pressurize and remove dents from any tube on a bicycle.
I think I watched the same video about exhausts and wondered if it would be possible to do on a bike frame. Great content thanks for sharing.
Interesting... wish you'd shown more of the set-up as I would echo some of the other comments here: how did you "bung" the frame? what air-pressure set-up did you use? Etc.
thanks! great, ideas
mizeravi é um genio. very nice
how did you pressurize it? doesn't bike frames have holes everywhere for drainage? did you seal all the holes?
Bro how to get rid of top tube in cycle bro center la athu romba disturb ah irukum bro cycle height ah vera iruk
What was air pressure?
It's works in an aluminum frame? With a dent of about 2 inches?
no way
Will this weaken the steel?
The heating of the steel red/white hot and allowing it to air cool anneals and softens the metal. However removal of the dent which is a stress concentration point most likely increases the strength of the overall structure, not as strong as the original the original but stronger than with the dent. A simple example of this is to take a aluminum beverage can load it with a know amount of weight until it collapses. Now take another can put a dent in the side of the can and see the weight at which it collapses. Small dents may not have much effect but as the dents get larger they can drastically reduce the strength. Good question, thanks for asking.
It is work for aluminum frame
what kind of plug you used any photos?
The plug was made from pvc pipe/tubing. The diameter of the pvc was a little smaller than the bike tubing so I used some black vinyl tape to create a snug fit.
At what psi did you pressurized the tube?
120
Excellent! But this was aluminium, wasn't it? How about steel?
This is steel you can tell by the heat discolouration
@@JAYZWORKSHOP OK, thanks!
@@JAYZWORKSHOP Good eye!
You can also tell by the ting-a-ling-ring sounds made by the frame when he tapped it with a panel beater's hammer.
I don't think you can do this with aluminum frames and ride with peace of mind, particularly with dents that size.. steel would be a better material for this
U burn through that aluminum it'll explode, with that pressurized o2 in the tube.
What happened to this guy and his channel
Good job can you do that with aluminum frame
That's my question as well?