Author Topic: frame damage oh no (Read 13694 times)

Mantree · « **on:** February 01, 2015, 05:42:50 PM »

so i don't have a photo of it yet "camera busted". I was riding on a dirt road a few days ago when turning in to a drive way and my rear tire slipped putting me down at about 10 or 15 but i still bent a tab welded on my down tube fore the highway peg. it has ripped off leaving a small hole. i have a friend that said that he can patch it and i will be having the other side cut off so that i can just install some banana bracket for a set of forward controls. my question is if this fix will be structurally sound and if the bracket will add a bit of reinforcement.

calj737 · « **Reply #1 on:** February 01, 2015, 06:10:02 PM »

It can be structurally sound if your friend knows what he's doing. As for adding any reinforcement, probably not. A bracket on a tube isolated is no value. In order to add strength, you need to tie two or more tubes together.

HondaMan · « **Reply #2 on:** February 01, 2015, 07:02:31 PM »

Another "old" technique we used was to cut a larger-diameter tube in half, then we laid it against the weakened one and welded all along the edges of the new one, over the damage. This got tourers home again, at least, when they were from [somewhere else] and came by my/our shops, back in the day, after some wreck (or a pickup truck backing over their parked bike!). It's not pretty, but it works.

Mantree · « **Reply #3 on:** February 02, 2015, 05:12:39 AM »

Thanks he put him self threw school as a welder so he knows what he is doing. I was thinking of doing the bandaid trick with the second tube but that will add a lot of bulk up there and make the highway pegs not fit I suppose I could make a spacer and push them out a bit if I went that route

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calj737 · « **Reply #4 on:** February 02, 2015, 05:29:38 AM »

You might consider making fold-away pegs for just such an occurence...

Mantree · « **Reply #5 on:** February 02, 2015, 06:53:46 AM »

I am using a stet of iron head sportster forwards because I am known to scrape in mountain passes so I wanted the fold ups any way that's why I didn't get the tc bro set (they are solid pegs). This way I can use the harley pegs because they have a lot of dampening to make up for the vibrations

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Mantree · « **Reply #6 on:** February 02, 2015, 03:54:02 PM »

This is the damage it's a bit Worse than I thought it was will filling it in be enough or will I need to sleeve it?

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martin99 · « **Reply #7 on:** February 02, 2015, 04:14:56 PM »

That looks like it was welded by a partially-sighted chimpanzee. Accident waiting to happen

That tab needs removing and the integrity of that part of the frame checking properly.

Mantree · « **Reply #8 on:** February 02, 2015, 05:03:21 PM »

Ya that's why I am taking them off. Should I clean it out and cut a filler and weld that in?

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calj737 · « **Reply #9 on:** February 02, 2015, 05:20:35 PM »

The problem I would expect to find in the original welds is in the first picture, where someone with a cold blew snot that paraded as welds, I suspect they used too much heat and have actually blown out the tubing. The factory tube is very thin and won't take much heat. Overheating actually weakens it worse than poor welds.

If it were me, I'd be cutting those tubes out and replacing them. I would only have them welded back by a truly competent person who TIG welds them.

My opinion.

Garage_guy_chris · « **Reply #10 on:** February 02, 2015, 07:01:25 PM »

That actually passes as welding? If that was mine i would cut that garbage off and clean up the frame tubes, see where things are at. then after i would re-enginner some sort of mounts. Off the top of my head i would weld the forward control bracket to a half of an overlapping tube them perimeter weld the half tube to the frame tube

Mantree · « **Reply #11 on:** February 02, 2015, 08:01:45 PM »

The welds were done by my late uncle as you can see he was a better brick mason than welder. I was planing on ditching the welded on mounts and using a mount that bolts on to the engine mounts
http://www.hondachopper.com/gallery_misc/project_chopper/jim/jim2.html
I just need to fix the frame first I took a look when I got back from class tonight and it looks like I have about a 1/4 inch clearance to weld another tube over the existing and still get the brackets on

Mantree · « **Reply #12 on:** February 02, 2015, 08:06:25 PM »

I will be using a set of controls from a old sportster

calj737 · « **Reply #13 on:** February 03, 2015, 04:36:29 AM »

The width of those looks very dangerous for turn-ins.

Mantree · « **Reply #14 on:** February 03, 2015, 04:45:18 AM »

Ya they still have the Harley mounts on them so they will be made to fit when we make the new mounts. I wish I had saved the page but I have see someone use the same forwards on a Honda chopper before

calj737 · « **Reply #15 on:** February 03, 2015, 04:47:50 AM »

I have as well. And they still looked bloody dangerous. It's been my observation that too many guys who ride forward control bikes walk with a limp. Makes me wonder the cause-

Mantree · « **Reply #16 on:** February 03, 2015, 05:13:53 AM »

Iv ridden with forwards before and yes I have scraped in mountain passes but I believe the limp may be do to (like me) to much time in the saddle, the more you ride the more likely you will have a wreck my last forward control bike was a 1100 shadow and I put about 4000 miles on with no problems until riding to the store someone blew a light and hit me now I walk with a limp but it was not caused by the pegs. Ps the drivers insurance said that he wasn't at fault because I was to hard to see even though he ran a red light so remember to keep the number for a good lawyer.

Mantree · « **Reply #17 on:** February 03, 2015, 08:46:29 AM »

Quote from: HondaMan on February 01, 2015, 07:02:31 PM

Another "old" technique we used was to cut a larger-diameter tube in half, then we laid it against the weakened one and welded all along the edges of the new one, over the damage. This got tourers home again, at least, when they were from [somewhere else] and came by my/our shops, back in the day, after some wreck (or a pickup truck backing over their parked bike!). It's not pretty, but it works.

What method do you use my buddy has a mig I have a ark and there is a guy that I have had weld on my truck that dose tig and oxi

Mantree · « **Reply #18 on:** February 05, 2015, 10:51:13 AM »

So I called my automotive welder and he is booked up after the winter we have had but he gave me the name of a customs shop about 20 miles from me. The guy there said that if I do the prep work it will take him about an hour to a hour and a half to do the repair at 50 a hour. My next day off I will be disconnecting the electric and then getting the tabs off and wire brushing the paint off then on a trailer it goes for the ride There

Mantree · « **Reply #19 on:** April 04, 2015, 08:10:00 AM »

So with starting my new job I haven't had a second of time to work on the bike but our welder said that he would do the job pro bono if I wire up his new light bar but I was just wondering what tube I should use the cb750 has a 30mm frame diameter but I can't seem to find ad 30mm I'd tube in town

calj737 · « **Reply #20 on:** April 04, 2015, 08:21:34 AM »

It's very close to 1-1/4". A few extra passes with a TIG, and you can blend the welds out to hide the repair. I would suggest using 1/8" wall tubing.

Don R · « **Reply #21 on:** April 04, 2015, 08:50:46 PM »

I welded in a section on a damaged frame once, I was able to slip in the next smaller size tube as an internal reinforcement. Mine was near the side stand though.

HondaMan · « **Reply #22 on:** April 04, 2015, 10:00:32 PM »

Quote from: Don R on April 04, 2015, 08:50:46 PM

I welded in a section on a damaged frame once, I was able to slip in the next smaller size tube as an internal reinforcement. Mine was near the side stand though.

This has been my method, too. Works well! I've sometimes used a solid "plug" inside the tube, of it needed to be [lathe] turned to fit inside the metric pipes. Except, don't do this on lower sections, as water can collect above this sort of plug and cause other problems!

Rocky2010 · « **Reply #23 on:** April 05, 2015, 04:37:36 AM »

Welding like that we call bird #$%* not a good sight to see on a frame

Mantree · « **Reply #24 on:** April 09, 2015, 07:56:38 PM »

Well I still haven't gotten to to my welder yet with a change of job but I had a the welder at work say he would do it for me and all I have to cover is materials. I got my new tail light on but not wired. I will be pulling the tank to clean it and disconnect the electrical.

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Author Topic: frame damage oh no (Read 13694 times)