My Cool 750 Commando

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Wow, thats cool... have you got any more pictures of your bike you can share? Looks to be very original from what i see... Oh and welcome to the forum..
 
Welcome to the forum.

Cats were already nervous around here; and now you introduce another new way to skin them!
 
+1 welcome. Thanks for posting this thread, needing. What is the reasoning behind mounting the oil cooler with the entry and exits facing upwards?
 
Interesting approach to an issue that has seen a lot of discussion on the forum. You've clearly put a lot of thought into it. If you haven't already looked, I'd suggest you search this forum for "crankcase breather", "oil breather", "reed valve breather", etc. You'll find lots of interesting info on the subject. Try to find the posts where comnoz talks about putting a plexi window in the timing side to watch the oil distribution. It sounds to me like a system with a reed valve is the best way to go, and I'm about to try my first one, but you'll find a lot of discussion on where it should be located, and what it takes to make it work at higher rpm.

Ken
 
I placed the reed valve here :
My Cool 750 Commando


My Cool 750 Commando


holes closed and drilled à la Comstock .
Tube connects to the cranckase .
 
Do you have a thermostat on that oil cooler ?

I found the oil in the tank barely ever gets hot enough to need a cooler.
Needs to be a very hot day before the thermo would open.
And in traffic, when the oil does sometimes get hot,
it needs a fan to blow through the oil cooler to do any good. ??
 
hobot said:
I'm delayed in fitting exhaust eductor/extractor and not sure where to place the suction tube or angle so hope you show the rest of us how to make it work. Slow idle back wash needs to be accounted for or may leak oil out seams till going faster. I'm placing a 02 sensor bung and wonder if its low pressure shadow may work. Some day one of us will get a Commando really finished.
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Other online forums are also discussing this very issue. Consensus is that this is their valve of preference:
My Cool 750 Commando


NAPA http://www.napaonline.com/Catalog/Catal ... 0081009691

It attaches to a bung that's welded into the collector at a 45' angle. This is a Moroso kit that uses the NAPA check valves to help evacuate the crank through the two valve covers.
My Cool 750 Commando

You can see the angle pipes as part of their kit that would weld into the header. As to specifically where, that might take some experimenting.

Nathan
 
needing said:
Oil tank temperature measured with J type thermocouple = 85°C on a warmish day with spirited riding.
Thats the oil temp. going into the engine.
Ta. Owen.
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Whats the temp coming out of the motor though ?
Oil has to get fairly warm, to make sure the moisture in it from startup is evaporated/boiled out of it.
If its not overly hot, the thermostat may always bypass the oil cooler.
 
Rohan said:
needing said:
Oil tank temperature measured with J type thermocouple = 85°C on a warmish day with spirited riding.
Thats the oil temp. going into the engine.
Ta. Owen.
Click to expand...

Whats the temp coming out of the motor though ?
Oil has to get fairly warm, to make sure the moisture in it from startup is evaporated/boiled out of it.
If its not overly hot, the thermostat may always bypass the oil cooler.
Click to expand...

The temps here in Aus vary from - 0c to 50c+ depending where your riding.. Not knowing what the ambient temps are where "needing" rides it is impossible to speculate oil temps IMO.... Riding, racing etc varies oil temps accordingly.......... IMO, any oil cooling device on a Norton in Australia is a worthwhile addition regardless of 2-5-10 degrees temp in out up down from the cooler... Oil cooling is a luxurious, benificial addition to any Norton (in Aus)
 
That's funny. I lived in the Pilbara region of WA for some three years. Rode my Norton extensively in +48 C temperatures and never had a problem with cooling. I don't think an oil cooler is necessary. Certainly not in the more temperate regions of Australia.
 
needing said:
[Did you know that 80°C+ is the temperature used to sterilise equipment so I reckon any moisture is resolved.
Click to expand...

??

Typical steam sterilization temperature for medical equipment in an autoclave is 120+ C, not 80. Sterilization by boiling is at 100 C. You must be talking about some other sort of equipment.

Ken
 
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