Transmission Heat
98valk:
Quote from: Peteg on July 21, 2025, 10:16:35 AM
Quote from: sandy on July 21, 2025, 09:59:45 AM
If you go to covers, you can install insulation under them.
I was thinking the same thing. It looks like the covers are louvered and I assume the main oil cooling comes through the transmission case? but if I'm careful and take some before and after temperature readings I can't imagine there would be any oil cooling issue. I'm also with Jessie, based on my experience a piece of sheet metal does little to stop heat. It's only good as a cosmetic cover for the insulation.
I presume u know the heat is coming off the engine and from the radiator and blowing back to u. much less oil is in the transmission section than the engine so main engine cooling is from the engine and heads being aluminum which dissipates the heat faster than cast iron. the bottom of the engine has cooling fins, keep them clean. the heat from exhaust pipes is 300-500F which rises up to u. To have lower wear, better HP and MPG, the engine oil has to be at least 210-220F, best coolant temp for same reasons is 180-200F.
riding gear is the way to keep the heat off the body
Peteg:
Yes I doubt adding a little insulation on the right side of the tranny will make any significant difference to oil temperature. Certainly insignificant with respect to allowable contact temperatures per the ISO design.
I presume u know the heat is coming off the engine and from the radiator and blowing back to u. much less oil is in the transmission section than the engine so main engine cooling is from the engine and heads being aluminum which dissipates the heat faster than cast iron. the bottom of the engine has cooling fins, keep them clean. the heat from exhaust pipes is 300-500F which rises up to u. To have lower wear, better HP and MPG, the engine oil has to be at least 210-220F, best coolant temp for same reasons is 180-200F.
riding gear is the way to keep the heat off the body
[/quote]
h13man:
I added firewall insulation to my new altenator cover as they are very expensive nowadays. That was 12 yrs. ago and heat no peel of the chrome.
Timbo1:
Comparative to my Ultra Classic the Valk is mild when it comes to felt heat. Try riding around with head temps in the 400's and engine temp in the 300's between your legs, lol. Stop and go traffic is the worst.
I haven't found the covers to help with heat at all. They do improve the look of the transmission area IMO but that's about all.
I think the best thing you can do is put on Air wings and keep it rolling.
But I know your full of ingenuity so I'll give you an idea. For the HD air cooled engines there are several mfg's that sell cooling fans to help keep the heat down in stop & go or parade riding. You could probably fabricate something similar for your Valk.
Lookup Love Jugs, Jim's Force Flow fans, https://baddassfanz.com/
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