max8992
Joined: 28 Jul 2011
Posts: 142
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 Posted: Mon Jan 16, 2012 9:48 am Post subject: lower cowl opening for 914 only? Maintain temp on cold weat |
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Hi there All,
Some collateral question about maintaining oil and cylinders temperatures
during cold weather (I have ~70°C when external temp is 0°C): has anyone
installed some mechanism to deviate fresh air from the radiators, as I have
seen on other home built planes? Any REX?
Max Cointe
F-PMLH TriGear Kit #560
912ULS Airmaster 400 hours
-----Message d'origine-----
De : owner-europa-list-server(at)matronics.com
[mailto:owner-europa-list-server(at)matronics.com] De la part de Frans Veldman
Envoyé : lundi 16 janvier 2012 18:15
À : europa-list(at)matronics.com
Objet : Re: Re : lower cowl opening for 914 only?
On 01/16/2012 04:44 PM, John Wigney wrote:
| Quote: | It is still open after
10 years and 800 hours and I am not aware of any ill effects.
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Well, in that case to make you aware of it:
Diverting air, rushing by with a speed of 100+ knots, from a smooth path
alongside the airplane, instead into a hole with lots of obstacles,
sharp turns, etc and letting it out again as a turbulent mass in the
wrong direction and with the wrong speed, is certainly costly in terms
of performance and efficiency. And in this case for no usefull purpose.
Maybe you have invested a lot of effort to make the airplane as smooth
as possible, in that case such a needless source of drag is an even
larger waste.
As a general rule you should close off all unnessecary holes in an
airplane. This is the reason why you have made the covers for the torque
tube access holes. You can leave them off without any ill effects,
except of course a reduction in speed and fuel efficiency.
Frans
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Max8992
Europa XS #560 F-PMLH |
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