Craig.Spainhower(at)exelo
Guest
|
 Posted: Mon Oct 22, 2007 1:10 pm Post subject: Zenith-List : 0-235 fuel burn rate |
 |
|
Hopefully anyone building their own airplane is smart enough to do their own research rather than base their decisions on a lot of slanted opinions expressed on this list, but I have to call bullsh*t on this one. I have flown behind an 0-300 in my C-172 for several hundred hours and burn 7.5 gph in 75% power cruise. Flight training in a C-152 we planned for 6 gph but usually burned 5 - 5.5 gph, due to reduced power for maneuvering. At 75% cruise you can multiply the rated horsepower of your engine by .5 and be within +/- 5%. Unless you leave that red mixture knob mashed against the firewall all the time, you will burn the same amount of fuel for the HP developed regardless of what engine you use. Fuel injection and electronic ignitions can improve on that 10 - 15% at best. Unless of course you are using one of those special 100 mpg carburetors.
Craig S.
N601XS, 601xl lyc 0-235, wiring in progress
All-
WW recommends the use of 100LL in his conversions. Therefore, the
biggest savings isn't in the weight of the engine, but the weight of the
fuel you have to drag around.
I used to flight plan at 8gph when I was part owner of a C-152/O235. All
(And recurring) burn data on a WW conversion is in the mid 5's. Figure 6 and
you're still 25% less burn than an O-200/235.
Stock tanks for an XL are 30 gal (at) 6lbs per gal. Around 50lbs of built
in dead weight for the O-235. Figure a fraction less for the O-200.
-----------------------------------------
**************************************************
This e-mail and any of its attachments may contain Exelon
Corporation proprietary information, which is privileged,
confidential, or subject to copyright belonging to the Exelon
Corporation family of Companies.
This e-mail is intended solely for the use of the individual or
entity to which it is addressed. If you are not the intended
recipient of this e-mail, you are hereby notified that any
dissemination, distribution, copying, or action taken in relation
to the contents of and attachments to this e-mail is strictly
prohibited and may be unlawful. If you have received this e-mail
in error, please notify the sender immediately and permanently
delete the original and any copy of this e-mail and any printout.
Thank You.
**************************************************
| | - The Matronics Zenith-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Zenith-List |
|
|
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
