Cracked Frame? Yes, definitely, and here are the fix pics.

dcstrom

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Re: Cracked Frame... help!

troll said:
Bloodline, I was thinking the same thing. Looks a bit like a cold lap of the weld. I have seen this a bit on factory welds. Corrosion starts in the cold lap area and flakes the paint off. Saw some of this on my Yamaha snow machine suspension A-arms. I would be inclined to leave it alone and watch it like a hawk to see if it is getting worse.
Good to have another vote for no crack! But can't afford to let it go and just watch it, in case it fails at the worst possible time - somewhere on the Ruta 40 in the middle of nowhere. Roads are going to be pretty rough in some sections, so I hear. Will see if I can get a good welder in the next couple of days to test to see if it really is a crack.

Thanks guys.
 

troll

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Re: Cracked Frame... help!

dcstrom said:
Will see if I can get a good welder in the next couple of days to test to see if it really is a crack.

Thanks guys.
Best idea... professional opinion while actually looking at the problem.

One (a good welder) could carefully grind the edge of the weld with a small die grinder to see if it is just a cold lap on the edge of the weld or a crack in the frame tube. If this is actually a crack it will be hard to stop it from re-cracking without welding end to end on the crack. If there is any of crack left un-welded it will re-propagate.
 

la-motor

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Re: Cracked Frame... help!

dcstrom said:
Yes, I think it really is cracked. I'm just about to start on the Carretera Austral through Patagonia before starting on the badly corrugated Ruta 40 into Ushuaia. Not a good time to have a cracked frame. Or to put it another way, lucky I noticed it before I got down there.

This is 40,000 miles into the trip, bike has been used hard over some bad roads, but I wouldn't say it's been abused. True, it's carrying a lot of weight and I sometimes go faster than perhaps I should on rough surfaces (considering the load), but suspension has rarely bottomed out - I can think of a few times at the front, can't think of any occasion the rear bottomed. This is with an Ohlins shock.

So what next? I'm not far from Puerto Montt, large port city where there should be competent welders. What sort of welding should be done? What to do to make sure it doesn't f*&%k the electronics (depends on what style of welding is done?). Do I need to drop the swingarm? And if not, am I going to have to worry about heat damage to bearings and seals? (I guess so...)





If it is cracked and you can't do a proper weld without removing the motor...clean it up and weld the best you can, and if there's room, you may want to try to add a gusset until you get to a place where it can be repaired or replaced properly.

 

dcstrom

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Re: Cracked Frame... help!

Does anyone know what kind of steel is in our frame? I guess it could make a difference in how it welded and what with?
 

troll

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Re: Cracked Frame... help!

dcstrom said:
Does anyone know what kind of steel is in our frame? I guess it could make a difference in how it welded and what with?
Yamaha is probably the only one that would know for sure, but I would expect it to be nothing very exotic. At best it might be chrome moly but probably a good quality mild steel. If you find a competent welder they will be able to tell by hitting it with a grinder, the type of sparks it produces will give some idea. Most competent welders using current technology won't think twice about welding on the S10 frame. Find the best reputable fabrication shop in a major city and you should get quality service.

I haven't worked in the welding industry for over 30 years... so am not current. TIG is probably best as Tabasco has mentioned but I wouldn't be afraid to MIG or stick weld my frame.
 

Checkswrecks

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Re: Cracked Frame... help!

dcstrom said:
Does anyone know of a definitive test for a crack (apart from borrowing an x-ray machine from a nuclear plant!)
The airport ought to have a mechanic with dye penetrant. I'd first clean the entire area with a wire brush and inspect it with a 10X magnifier.
http://en.wikipedia.org/wiki/Dye_penetrant_inspection

From the photos, it does indeed look like a crack and it's in the place to expect one from the overload and pounding you've given it.

IF you do end up replacing the entire frame (2nd best case to this just being paint breaking off at a flex point), then remember that the VIN number change will probably affect your papers, including title, registration, insurance, carnet, etc.
 

Checkswrecks

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Re: Cracked Frame... help!

dcstrom said:
Does anyone know what kind of steel is in our frame? I guess it could make a difference in how it welded and what with?
Should be easily weldable steel without any high tech alloys. As somebody else wrote, touch a grinder to it and note the sparks.

Your book is getting more and more interesting and it's not even finished yet!
;D
 

dcstrom

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Re: Cracked Frame... help!

Thanks Checkswrecks, good info about where to get the dye penetrant.

Unfortunately my welder didn't have any such "high tech" methods of determining whether it was actually a crack or not. He ran a file over it and declared that there was no crack, just corrosion. Myself, I wouldn't rely on this method - couldn't it be that the file would just smear a thin layer of metal over the crack? But what would I know... so I'm relying on his experience.

So we slapped some anticorrosive paint on it and called it good. I guess now I just keep a close eye on it. I suppose, depending on the brittleness of the paint and the amount of flex going on in that spot, that if it turns out that it IS cracked, the paint will crack there pretty soon.

If it does need welding, I guess there will be plenty of places with a MIG on the way south...
 

troll

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Re: Cracked Frame... help!

dcstrom said:
depending on the brittleness of the paint and the amount of flex going on in that spot, that if it turns out that it IS cracked, the paint will crack there pretty soon.

If it does need welding, I guess there will be plenty of places with a MIG on the way south...
If it is cracked you will see it again pretty fast. ::26:: ::26::
 

dcstrom

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Re: Cracked Frame... help!

So not confident about the diagnosis of ¨"no crack" I thought I would work on Checkswrecks suggestion of getting dye penetrant at an airport. Unfortunately the one near here is only a 2 hangar/ 1 strip affair, and not even any planes there at the moment. No mechanics either, but was able to talk to a guy who called the mechanic... no dye penetrant on site.

He sent me to his motorcycle mechanic who also said "no crack" - so I´m going with that diagnosis for now. It´s the one I want, after all!

Patagonia tomorrow - woo hoo!
 

dcstrom

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Re: Cracked Frame... help!

GrahamD said:
The bike weighs 260Kg for a reason ::024::

Soldier On!!

** Warning Australiana following. ***

https://www.youtube.com/watch?v=cnsxh95BP_o
Thanks Graham - yeah, gravity doesn't do sick days. Marketing geniuses. Funny I was ready an article recently about aussies taking fewer sickies due to pressures of work etc. Many people go to work sick. Soldiering On. Jeeze it's not like the old days! Friends of mine (but not me ;) would take a sickie at the drop a hat...
 

twodogs

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Re: Cracked Frame... help!

::026:: on the Soldier On! Enjoy the Ride
 

tc9988

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Re: Cracked Frame... help!

dcstrom said:
So not confident about the diagnosis of ¨"no crack" I thought I would work on Checkswrecks suggestion of getting dye penetrant at an airport. Unfortunately the one near here is only a 2 hangar/ 1 strip affair, and not even any planes there at the moment. No mechanics either, but was able to talk to a guy who called the mechanic... no dye penetrant on site.

He sent me to his motorcycle mechanic who also said "no crack" - so I´m going with that diagnosis for now. It´s the one I want, after all!

Patagonia tomorrow - woo hoo!
regarding your perception of an overload. I'm sure the weight all your gear is still less than 1 fat chick ;D enjoy Ruta 40, looking forward to more photos ::008::
 

snakebitten

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Re: Cracked Frame... help!

You gotta be happier when you get good news. :)

Nothing is unbreakable. (Titantic)
But it appears you still haven't broken your Tenere.
It's a true Beast. Maybe the toughest on the planet.
 
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