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Discussion Starter · #1 ·
This one is for all you thermal dynamics experts.
This 111 engine is run through all six gears too 100mph plus,
And the heads are still cool.

http://youtu.be/rfVKibBn_1A
 
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Discussion Starter · #2 ·
How can that be? I felt a fair amount of heat coming from this motor during demo rides.........
 
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Discussion Starter · #4 ·
The tech guy doing the talking says there
are engineers on hand. I don't picture them running a cold motor to full throttle.
 
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Discussion Starter · #5 ·
someone will be buying that bike down the road and won't have any idea what its been through,,, kinda like the demo bikes.
 
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Discussion Starter · #7 ·
14125 said:
someone will be buying that bike down the road and won't have any idea what its been through,,, kinda like the demo bikes.
Thats why if I was there would take down the Vin
 
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Discussion Starter · #8 ·
The engine was running for less than a minute....

'It's not even warm!'.... umm... hello, it should have been warmed up BEFORE being run hard.
 
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Discussion Starter · #9 ·
It wasn't running at all. The engine sounds were coming from speakers. It was a demo gimmick.
 
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Discussion Starter · #10 ·
I guess I'm confused. You can do this with a Victory too. Why is this of interest?
I guess a Harley would burn your hand by running that small amount of time?
 
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Discussion Starter · #11 ·
The heat you feel on your leg while riding is from the exhaust pipes. I've often used the heads on the Victory as a hand warmer while riding in cool weather. They get warm but they don't get that hot.
 
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Discussion Starter · #12 ·
Yea thats BS! I have been riding mine in the cooler temps here in VA. (3200 miles so far) and the heads get rather warm. I call Bulls___t!
 
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Discussion Starter · #13 ·
19850 said:
Yea thats BS! I have been riding mine in the cooler temps here in VA. (3200 miles so far) and the heads get rather warm. I call Bulls___t!
I second that motion. Use my cylinder head to heat hands at stoplights.
 
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Discussion Starter · #16 ·
He did that when I told him I was heading to get the new Indian. He still has that smile whenever he walks into the garage.
 
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Discussion Starter · #17 ·
Point is it's not bs, cylinder heads with the Vic/ Indian oil cooled system don't get that hot. Pipes yes, heads no.
 
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Discussion Starter · #18 ·
Cool heads confirmed!

I took the Vintage out this afternoon for a short fifteen mile trip in fifty-five
Degree weather. Just before returning to the garage I did couple of Wide open
Throttle passes through the first four gears. Immediately after shutting down
The bike I removed my glove and put my hand on the head. What i noticed was
The heads weren't even warm, in fact they were cool to the touch. The only thing
Hot were the bolts holding the head on, the fins below it, and the exhaust.
It's like the head wasn't Connected to the block. I'm thinking what the heck?
Then I remembered this cut-a-way view of the 111 and I Think I figured it out.
The head is really just a rocker cover and it appears there is a dead air space
Between the top of the cover and the inside part that seals to the block.
What appears to be the top of the cylinder head is in affect cosmetic. The only
Thing connected to the block is the rocker bolts and they get hot through heat soak.
As long as you are moving, the ambient air passes through the rocker cover and out
The back effectively keeping the top of the engine cool to the touch.
Another great piece of engineering from the folks at Polaris!
 
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Discussion Starter · #19 ·
My 2011 Nomad 1700 has plastic head covers and never get hot. I can touch them no matter how long I ride or what temp it is out. Alot of bike engines are like that now.
 
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Discussion Starter · #20 ·
No plastic in the 111, it's all metal, and With very few changes,
The bottom of the casting could be closed off and 'presto'
You have space for a water cooling :)
 
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