Air-cooled vs liquid-cooled?

[Coyote]

Ummmm, you've got that all a bit backwards Dan.

I'm right on the water cooled bikes being mechanically quieter than air cooled. Edit: generally, not always.

And I still think a quiet bike is more refined, just my bikes show I'm a vulgar person

[imdying]

Aircooled is very old tech. Much like the wheel, and there ain't much wrong with them. There's less to go wrong, that adds brownie points. On the flip side they often exhibit a little more noise from the motor, and are generally in a lower state of tune. One could argue that for a cruiser those are points for not against.

[Flip]

You sure that's not an "Undocumented Feature" Scummy?

When a big block gets hot it firstly drops 100rpm from its idle, then if it continues to heat up it starts deliberately missing, it intermittently stops injecting fuel drawing a cool charge of air through the motor cooling it.

[slofox]

When a big block gets hot it firstly drops 100rpm from its idle, then if it continues to heat up it starts deliberately missing, it intermittently stops injecting fuel drawing a cool charge of air through the motor cooling it.

That's pretty damn clever actually innit.

Even the gixxer gets up to cooling fan temperature in city traffic.

[willytheekid]

Ahhh watercooled

I remember getting stuck in traffic in central Dunners mid summer on my old GPZ900....she overheated and BLEW the radiator cap off!, which sent a geyser of boiling water spouting out...all over me!....fastest dismount of a bike I have EVER done
I had to sit there and just watch my "Jug" of a bike spew boiling water and block traffic....funny now....but hurt like hell then (burnt legs and arm)

Now the old air cooled Guzzi.....she just gets grumpy when hot and the clutch turns to shit...otherwise, no prob!

I loves the simple setups....and not getting third degree burns!

[jonbuoy]

Depends on what you're looking for. Engine heat frying your testimonials when riding around town can be problematic for both liquid and air cooled bikes. Other than that it's really just the Euro standards writers and their obsession with emissions that have any material effects for most types of bikes and riding conditions.

I think it was more to do with the USA (California) than Europe's euro standards putting the nail in the aircooled coffin.

[Spearfish]

Latest Harleys have a system whereby the rear cylinder is cut out when temps get high in traffic.

Is the rear the po or the tato cylinder?

[doc]

This water cooling thing is a passing fad, my lawn mower is air cooled. Well I think it is

[sinfull]

When a big block gets hot it firstly drops 100rpm from its idle, then if it continues to heat up it starts deliberately missing, it intermittently stops injecting fuel drawing a cool charge of air through the motor cooling it.

Now thats interesting, was gonna ask scummy where he found his wee gem of info that the rear just shuts down, but refined into this wording, i could see working !
My FXR has that option built in too now, it's called an EV51