That "tinking" sound from cooling engine

[oldbike54]

Right, your particular motorcycles support your hypothesis, but aren't representative of all motorcycles.  My H2 doesn't tink at all, yet my Mille does a little bit.  Both are air cooled, of course.  Most cars I've owned tink quite a bit if you lift the hood and listen, and they're all liquid cooled.  My wood stove tinks a lot if you build up the fire, or cut off the air intake to cool the fire.

 So ... the H2 doesn't have an exhaust system ????

 Dusty

[ITSec]

I guess even the guys writing tech notes can be confused.   

If you've read tech notes from Guzzi, this wouldn't even be a guess. At all. Not even a little bit. 

[Triple Jim]

My Mille has no heat shields and it tinks.  It's the joints in the exhaust system doing it.

[Triple Jim]

If you've read tech notes from Guzzi, this wouldn't even be a guess. At all. Not even a little bit. 

    

[Triple Jim]

So ... the H2 doesn't have an exhaust system ????

 Dusty

My assumption is that the expansion chambers, being one piece from the cylinder to the outlet, don't make noise because they don't have any joints.  The connection to the cylinder is a tube-socket fitting with silicone sealer in it, so apparently it moves quietly.

[Huzo]

The bike I had that did it the most was a CB 900 Honda Bol D'or as they were known then. It did it IMMEDIATELY you turned off the key.

[yogidozer]

you're over tinking it.
settle in, it's a long winter. 

[charlie b]

Want to hear a lot of 'tinking'?  Listen to a car/truck with a turbocharger cool down. 

Yes, the tinking sound will be higher or lower pitch depending on a lot of things.  Stainless heat shields make some interesting noises.

[sib]

My barbecues also tink a lot as they cool.  Doesn't matter whether I've cooked ribs, steaks, chicken or tofu (just kidding with the last one).

[jas67]

My V7S with stock exhaust does it.
My V7R with Arrow exhaust (no heat shields) does not.

Same engine, different exhaust.
I'd say that the sound is from the exhaust.

The V7S and my previous V7C (also with stock exhaust + heat shields) are the only bikes that I've owned where I've noticed this sound.

I've got (and owned others) a lot of air cooled vintage bikes, Honda, Yamaha, Ducati, BMW, none "tink" when cooling.    Most of them didn't have heat shields on their exhausts, only a few Honda scramblers did, and they didn't tink either, maybe because they were mounted to the exhaust differently?

[rboe]

Dino oil tinks, syn does not.....   


 

[SmithSwede]

Hmmm, Jas67 has a great data point.  Maybe it is about the exhaust--I was skeptical.

Maybe the connection between exhaust header and exhaust port on a water cooled bike is cooler, thereby reducing tink potential. 

[jas67]

Hmmm, Jas67 has a great data point.  Maybe it is about the exhaust--I was skeptical.

Maybe the connection between exhaust header and exhaust port on a water cooled bike is cooler, thereby reducing tink potential.

Exhaust temperature is a factor of exhaust gas temperature.   Water cooling vs. air cooling will have little effect on the temperature of the exhaust.  It will effect the temperature of the head, but, no the exhaust pipes.

[ITSec]

Dino oil tinks, syn does not.....   


 

Somebody's tryin' to stir up a bit o' bother! 

[Penderic]

If its a tinking, I'm a thinking .....





It's TEA TIME! 








Time for drinking! (tea please.)

[Triple Jim]

Alright!  I just noticed your new avatar.  My Favorite Martian was one of my favorite shows when I was a little kid, and I've enjoyed Ray in several things after that.

[Huzo]

Alright!  I just noticed your new avatar.  My Favorite Martian was one of my favorite shows when I was a little kid, and I've enjoyed Ray in several things after that.

I didn't see him in much else here in Oz. Once as a county court judge type and I think that's it as I recall over here ???

[jas67]

If its a tinking, I'm a thinking .....





It's TEA TIME! 








Time for drinking! (tea please.)

That looks more like whiskey on the rocks.