Thermal images of Hawk engine

w0ss · 07-17-2016, 05:35 PM

Took these for fun after a ride today. Anyone know what the normal temp should be? Ambient is about 90 today.

Left side oil screen bolt area

Left side Stator.

Left side head

Right side head + exhaust

Ariel Red Hunter · 07-17-2016, 07:46 PM

Quote:

Originally Posted by w0ss

Took these for fun after a ride today. Anyone know what the normal temp should be? Ambient is about 90 today.

Left side oil screen bolt area

Left side transmission

Left side head

Right side head + exhaust

Seems hot to me. I hope you are running synthetic 20-50 oil.

w0ss · 07-17-2016, 08:30 PM

I am running synthetic 20w-50. I assume there isn't anything you can do about engine temps on an air cooled engine. Assuming it isn't caked in mud.

mjstef · 07-17-2016, 11:05 PM

And people are arguing the need for an oil cooler? I didn't have a Fleer but my laser heat gun recorded similar temps.....

BlackBike · 07-17-2016, 11:38 PM

But don't forget, your standing still. Set up a ventilator fan for a representation of true operating Temps.

Cool demo, thanks

w0ss · 07-18-2016, 12:48 AM

The engine was off, I pulled into my driveway and shut it down and took the pictures within a minute of shutting it off. I am sure even in the minute affected the temp but good enough for me.

Ariel Red Hunter · 07-18-2016, 02:59 PM

Quote:

Originally Posted by w0ss

I am running synthetic 20w-50. I assume there isn't anything you can do about engine temps on an air cooled engine. Assuming it isn't caked in mud.

Traditionally, when an engines oil ran too hot we put in a bigger oil tank, one of the good features of dry sump engines. But this engine is wet sump, and only has about a 1 1/4 quart oil capacity. That is barely enough oil capacity to get the job done. So the only solution that comes to mind is synthetic oil, which does not break down as easily at high temperatures.

Azhule · 07-18-2016, 03:40 PM

Quote:

Originally Posted by Ariel Red Hunter

So the only solution that comes to mind is synthetic oil

But only after the '500 mile break in procedure' right

Now everyone knows (one of the reasons) why one of the first things I did before starting the engine for the first time... was to put synthetic oil in that (non oil cooler just) Air Cooled Engine/Wet Clutch Transmission design

bogieboy · 07-18-2016, 09:00 PM

On my
Y rocket a db07a I routinely register 300+°F on my commutes and have never had issues... on a 90° day sitting at a stoplight will yield around a 365° head temp, measured right near the exhaust where my temp probe for my trail tech vector dash is. On my ke100 I have seen just shy of 400° at the plug...so I would say you aren't riding as hard as me....LOL then again extended periods of 60mph and wide open throttle to keep up with traffic flow is tough on a bike... I use a 1000 MI oil change interval on it though so I don't worry too much...

bogieboy · 07-18-2016, 09:02 PM

Oh and I run John deere 15w40 conventional torq-gard oil... I get it dirt cheap fro, the JD dealer that I turn wrenches for... as in free when there's oil left over from a quart...

BlackBike · 07-18-2016, 09:13 PM

365 degrees, no vapors are going to be hanging around in that crankcase

like you say, these little motors are incredible

bogieboy · 07-18-2016, 09:17 PM

Haha yep... I commute with my bike 30 MI each way on any day that's above 40 and low to no chance of rain..... got 2k on the bike this year already....

Ariel Red Hunter · 07-18-2016, 09:33 PM

Quote:

Originally Posted by Azhule

But only after the '500 mile break in procedure' right

Now everyone knows (one of the reasons) why one of the first things I did before starting the engine for the first time... was to put synthetic oil in that (non oil cooler just) Air Cooled Engine/Wet Clutch Transmission design

Break in allows parts to bed in to each other. That is why I reccomend a 500 mile break in. You certainly don't have to do it that way, if you don't want to. Engines are more precision machined now than they used to be. That's why we don't have to follow old break in procedures any more. No more 100 miles at 30 mph, 200 at no more than 40 etc etc. And there is no such thing as a totally air cooled engine. They are about 60% air cooled and 40% oil cooled. The first 500 or so miles lets the parts get about as slick as they are going to get, so after that point, they don't run as hot. I don't like oil coolers on off-road bikes. Or radiators of any kind. They add weight up high, and are apt to be damaged in a fall.

Azhule · 07-18-2016, 09:42 PM

I think we both know I was talking about one of these for the 'oil cooler'

http://www.chinariders.net/showthread.php?t=16941

So like I said "non oil cooler, just air cooled engine"

07-17-2016, 05:35 PM	#1
w0ss Join Date: May 2016 Posts: 231	Thermal images of Hawk engine Took these for fun after a ride today. Anyone know what the normal temp should be? Ambient is about 90 today. Left side oil screen bolt area Left side Stator. Left side head Right side head + exhaust __________________ Hawk 250 with following performance mods: 17t, Mikuni with 110/25, Uni filter, Exhaust. Last edited by w0ss; 07-18-2016 at 09:42 AM. Reason: Still learning left from right; Stator != Transmission.
	2

07-17-2016, 08:30 PM	#3
w0ss Join Date: May 2016 Posts: 231	I am running synthetic 20w-50. I assume there isn't anything you can do about engine temps on an air cooled engine. Assuming it isn't caked in mud. __________________ Hawk 250 with following performance mods: 17t, Mikuni with 110/25, Uni filter, Exhaust.
	0

07-17-2016, 11:38 PM	#5
BlackBike Join Date: Feb 2016 Location: George West, Texas Posts: 4,097	But don't forget, your standing still. Set up a ventilator fan for a representation of true operating Temps. Cool demo, thanks __________________ ***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
	2

07-18-2016, 12:48 AM	#6
w0ss Join Date: May 2016 Posts: 231	The engine was off, I pulled into my driveway and shut it down and took the pictures within a minute of shutting it off. I am sure even in the minute affected the temp but good enough for me. __________________ Hawk 250 with following performance mods: 17t, Mikuni with 110/25, Uni filter, Exhaust.
	0

07-18-2016, 09:13 PM	#11
BlackBike Join Date: Feb 2016 Location: George West, Texas Posts: 4,097	365 degrees, no vapors are going to be hanging around in that crankcase like you say, these little motors are incredible __________________ ***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
	0

07-17-2016, 11:05 PM	#4
mjstef Join Date: May 2007 Location: Lac Du Flambeau, WI Posts: 804	And people are arguing the need for an oil cooler? I didn't have a Fleer but my laser heat gun recorded similar temps.....
	0

07-18-2016, 09:00 PM	#9
bogieboy Join Date: May 2013 Location: finger lakes NY Posts: 2,042	On my Y rocket a db07a I routinely register 300+°F on my commutes and have never had issues... on a 90° day sitting at a stoplight will yield around a 365° head temp, measured right near the exhaust where my temp probe for my trail tech vector dash is. On my ke100 I have seen just shy of 400° at the plug...so I would say you aren't riding as hard as me....LOL then again extended periods of 60mph and wide open throttle to keep up with traffic flow is tough on a bike... I use a 1000 MI oil change interval on it though so I don't worry too much...
	0

07-18-2016, 09:02 PM	#10
bogieboy Join Date: May 2013 Location: finger lakes NY Posts: 2,042	Oh and I run John deere 15w40 conventional torq-gard oil... I get it dirt cheap fro, the JD dealer that I turn wrenches for... as in free when there's oil left over from a quart...
	0

07-18-2016, 09:17 PM	#12
bogieboy Join Date: May 2013 Location: finger lakes NY Posts: 2,042	Haha yep... I commute with my bike 30 MI each way on any day that's above 40 and low to no chance of rain..... got 2k on the bike this year already....
	0

07-18-2016, 09:42 PM	#14
Azhule Join Date: Dec 2015 Location: CO Posts: 1,525	I think we both know I was talking about one of these for the 'oil cooler' http://www.chinariders.net/showthread.php?t=16941 So like I said "non oil cooler, just air cooled engine" __________________ "Think as you like... but this self proclaimed Professor is always right" - Buckshot "You never know what someone is hiding beneath their smile..." - NinjaTom - R.I.P.
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