REFLECTOR: Cabin Heat

[Ron Brown]

Actually, the Vernatherm closes off a port which forces oil to go out to the 
cooler.  Else the oil can go to either the cooler or to the engine oil 
galleries.  Since the oil can go to the oil galleries easier than through 
the cooler then through the galleries, little or no oil flow will go thru 
the cooler when the vernatherm is open.

Ronnie


----- Original Message ----- 
From: "David Scharfenberg" <dave at winco.net>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Friday, February 17, 2006 5:07 PM
Subject: Re: REFLECTOR: Cabin Heat


>I thought the vernitherm worked opposite of that.
>
> Dave Scharfenberg
>
>
> On Feb 17, 2006, at 1:22 PM, Chuck Harbert wrote:
>
>> Joel, it's not recommended that you block air scoops to get your oil temp 
>> up, especially ones that also cool your cylinders. Assuming your using a 
>> Lyco or Continental, they normally come with an oil temp control valve 
>> (Veritherm) that keeps the oil above (about) 160degF . It works the same 
>> as a thermostat in your car. Once the oil temp in the engine gets to 
>> 160F, it starts to open. At about 180F it is wide open allowing all the 
>> oil to go to the oil cooler. You need to measure oil temp inside the 
>> engine, not at the oil cooler. You really don't want to run your engine 
>> at 80F oil temp. As a minimum, it should be 140F.
>>
>> With the front oil cooler on the Velocity, sometimes there won't be much 
>> heat coming out of the heater ducts when it's very cold outside, so you 
>> need to use other means to stay warm. You can pipe air over the exhaust 
>> pipe and into the cabin like most small aircraft do. You can use a 
>> separate circuit using hot engine oil thru a oil cooler inside the cabin 
>> with a fan. You can use an electric heater with a fan. You can use a 12 
>> volt electric blanket. You can wear thermal underwear and battery heated 
>> socks and gloves. I'm sure there are many more options out there.
>>
>> I do know people who partially block the entrance to the oil cooler only 
>> during the winter, but that's a trial and error system, plus during hard 
>> climbs, you run the risk of over temping. Have fun.
>>
>> Chuck H
>>
>>
>> -------------------------------
>>>
>>> Dr. Golf wrote:
>>>> Because of the very  large overhead scoops, I have a
>>>> problem getting the engine oil up to 80 degrees so it
>>>> will flow to the oil cooler in the nose. I
>>>> disconnected the rear oil cooler which improved the
>>>> situation in warmer weather but in the winter, I have
>>>> to run the engine at 24 x 24 to get some heat. Is
>>>> there an electric heater that really works?
>>>>  Any suggestions other than blocking the large
>>>> overhead scoops?
>>>> Joel Leon
>>>>
>> ------------------------------------
>>>
>>> Duct tape over part of the oil cooler.
>>>
>>> I have a flap after my oil cooler, so at least mine should be able to
>>> make cabin heat.
>>
>>
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