Dent in titanium pipe.

[Hetzer]

I have a small dent in one of my Ti downpipes, where it goes from vertical to horizontal under the motor. I'm aware of the freezing water technique but have also heard of tapping a ball or whatever into the pipe to drive the dent out. My question is this...how fragile is titanium? I've read that heating won't help, that the shit's brittle and liable to bust open etc. So, fix it or leave it? It's not causing a problem, it just niggles me.
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"There's the horizon! Ride hard, ride fast and cut down all who stand in your way!"

[Pete.]

How small is small? Can you turn a little wheel up with a rounded profile and fit it into a rod to poke down the hole and 'roll' it out?
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Hetzer]

[Nick 50]

[Frost]

I think the brittle idea comes from the grade of Ti used on bikes. Generally i's quite low grade and it's been heard of for Ti valves to fail on a tuned engine.
For an exhaust it would depend on my skill and the exact damage, but i'd be tempted to give it a go.

[el_oso]

no obligatory crappy picture taken on a mobile? tut tut...
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Duke 390
Previous: '05 XR125L | '96 XJ600S Diversion |'05 Suzuki GSXR1000 | '05 Honda CBR125-R | '97 YZF 600R Thundercat | '11 Honda CBR250
Car: Jeep Wrangler 4.0L

[Hetzer]

So it should bend back ok then. I'll give it a go, I've got some Delrin I can turn to size and put a nice cone profile on.

Thanks guys.
____________________
"There's the horizon! Ride hard, ride fast and cut down all who stand in your way!"

[Nick 50]

Just keep an eye on where it is welded.
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Current Bikes: ZX7r 97 (Black Beauty), VFR400 NC24 (The banana)
Previous Bikes: Aprilia Tuono 03 (The Beast), CBR600f (97)
First bike: A GZ125 Lemon.......

[spikenipple]

Just make sure you drill a hole through the cone and stick some studding through it so you can get it back out
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C50 > GN250 > XJ600 > SV650S K7 > 2001 RSV Mille R > MT-09, XR400R > 2005 Fireblade (trackbike) + 2022 MT-09 + ZXR400 race bike

[Hetzer]

It'll be threaded onto some rod.
____________________
"There's the horizon! Ride hard, ride fast and cut down all who stand in your way!"

[Pete.]

I don't rate the chance of success as very high for that. I think there's a real risk of it getting badly stuck too.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Hetzer]

[spikenipple]

I wouldn't thread the delrin. Put studding through the plug, stick a nut on it and a few large washers to spread the load across the plastic. Then put a nut and washer(s) on the outside end with a lump of steel on the rod to use as a slide hammer to get it back out
You could also use it as a slide hammer to bash the dent out.
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C50 > GN250 > XJ600 > SV650S K7 > 2001 RSV Mille R > MT-09, XR400R > 2005 Fireblade (trackbike) + 2022 MT-09 + ZXR400 race bike

[Walloper]