winterization kit

Re: winterization kit

walter this is the most interesting thing I have read on this site,,keep up the good work,,i just put one of those things on the bottom of the cowl of my 172,, but I cut about half of it out,, flew it last night and it seems to get warm enuf for me,,without getting too HOT..

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Re: winterization kit

Butch:

There seems to be no issue with running CHTs cold.  Lycoming says that the minimum operational CHT is 150dF.  That's pretty low.  The issue is the oil temp.  Getting the oil temp up is, in fact, important.  The problem is that altering the airflow into the cowl with anything has unexpected results and they are not even.  The changes in airflow and the creation of hot and cold areas around cylinders is very unpredictable and can cause serious problems.

I do not alter the airflow into the cowls and let the CHT's run cool. I put a little tape over the oil cooler to bring the oil temp up.  Based on the science and the testing, this properly addresses both even CHTs and adequate Oil temp.

Walter

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Re: winterization kit

Walter, The duct tape trick works great!  Have been using it for years.  Also very easy to remove if happen to fly south into much warmer weather.  Without the tape my oil temp will not get above 150 Deg during winter months.  I cover up 3/4 of oil cooler to get 185 deg reading.

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Re: winterization kit

Bill:

I have noticed that the standard, old, stand-by grey duct tape leaves a minimal residue upon removal.  I've started using the aluminum tape and it seems to come off a little cleaner.  What has been your experience?

Walter

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Re: winterization kit

I actually use the aluminum tape (a.k.a.  speed tape).  Switched to it last year simply because it is easier to remove and leaves very little residue.  I like this method best because I am not obstructing any of the airflow over the cylinders.

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Re: winterization kit

Walter,

I read with interest your description of your research on CHTs. I own a Bonanza (E225 engine) and noted that you stated that Bonanzas are OK except for two cylinders. Which cylinders are those? I have noted several patterns in CHTs and am curious to hear which cylinders  are most affected by poor cowling and what cowling changes may diminish the problem.
Thanks in advance.

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Re: winterization kit

Since this is a Cessna forum, contact me by private e-mail and I will be more than happy to discuss the issue with you.

Walter
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