hootsnik(at)sbcglobal.net
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 Posted: Sun Mar 26, 2006 8:21 am Post subject: Request for Info |
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Hi Folks,
I recently posted a request for info from listers with flying RV7, RV7a, RV9, RV9a, who had a specific engine/cowl/induction/prop configuration. I received little in the way of response--probably because the con fig I have is somewhat unique. I am making another request for data which will apply to a much larger group.
I am working on a performance issue and would like to have comparative data. The data, based on some postings by folks who obviously have a much greater knowledge on engine inductions than do I, will tell us something about the average efficiency of our induction systems. If I get a good response I will compile the data and post it to this site -- it would therefore be helpful in evaluating the performance of our individual systems against a group average.
The sample data should come from either nose gear or tail wheel flying RV 6-7-9s equiped with Vans cowl and FAB induction system and carburated 0360s or 0320s running a fixed pitch propeller. You will also need both rpm and mp gages.
The data necessary for the analysis is as follows:
1. mp indicated on engine gage prior to engine start
2. line up on runway prior to t/o and hold brakes, wot, and note mp and static rpm
3. just at lift off note mp and rpm
4. mp and rpm at 100-400 ft agl.--watch for traffic!!
Please note in your response whether you have the 0360 or 0320 engine and the type of engine gages (Vans, AF2500, etc)
Your help is greatly appreciated and maybe we can all learn more about the performance of our RVs.
Please respond to:
www.hootsnik(at)sbcglobal.net
Cheers,
db
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