Thanks for your insights. I will not go there...
Jan de Jong
>
>True, but oil cooling of valves is less efficient than water (912!) and with
>no airflow over the oil cooler there is no cooling at all. In fact the
>workshop manual for the R1100 prohibits idling of the engine in the workshop
>for more than 5 minutes without forced cooling.
>
>Weight is much closer to (or exceeds) 90 kg when an engine mount and
>exhaust is added. Then there's the bigger or second battery, additional (and
>less efficient) cowl ducting, two fuel pumps etc.
>
>A promising engine for some applications, but not the Europa and I have to
>say reluctantly (having been there) that the 912 does it better than the
>BMW.
>
>Duncan McF.
>----- Original Message -----
>From: "Jan de Jong" <jan.de.jong@xs4all.nl>
>Subject: Re: Europa-List: ENGINES!
>
>
>
>>>
>>> They claim very efficient cooling at the exhaust valves using a
>>> thermostatically controlled second oil circuit. Total weight is up at 80
>>> kg though.
>>>
>>> Jan de Jong
>>>
>>
>>
>>>>><ami@mcfadyean.freeserve.co.uk>
>>>>>
>>>>>Which solves the starting problem and introduces a cooling problem i.e.no
>>>>>cooling airflow below c.1700rpm when the clutch disengages. Useful for
>>>>>float/boat planes though.
>>>>>
>>>>>Duncan McF.
>>>>>----- Original Message -----
>>>>>From: "Jan de Jong" <jan.de.jong@xs4all.nl>
>>>>>Subject: Re: Europa-List: ENGINES!
>>>>>
>>>>>
>>>>>
>>>
>>>
>>>>>>>>>
>>>>>>>>> BMW developments are apparently still happening; using a centrifugal
>>>>>>>>> clutch integrated with the gearbox.
>>>>>>>>> http://www.spang-air.de/willkommen/BMW_Engine/bmw_engine.html
>>>>>>>>> http://www.takeoff-ul.de/Motoren/motoren.html
>>>>>>>>>
>>>>>>>>> Jan de Jong
>>>>>
>>>>>
>>>>>>>
>>>>
>>>>
>>>
>>
>>
>
>
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