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Posted for JIMRHER@aol.com:
The ol' hobbs or the new-fangled SFS timer?
Ron, I have the SFS and a Hobbs in my L4P. At 218 hrs on the SFS I have 255 hrs on the Hobbs. The Hobbs meter starts running at the clock rate when it sees oil pressure and is the time you are allowed to Log, according to what I read from the EAA/FAA, even for the initial 25 hrs. which allows running, taxi, etc. The SFS starts recording when it sees 1500 RPM. That gives you flight time and total time on the engine. All engine maintenance and Warrantee is done with this time.
As you can see there is about a 9% difference and is worth it for the warrantee.
I know you don't need the flight experience but I'm in South County San Jose and can offer you an in-flight demo, when your in town. You must be getting close to first flight?
Jim Hergert
N6XE, "An Sex Y" L4P
[ my CFS (well accualy its repackaged http://www.grtavionics.com/model_4000&6000.htm with old software) counter starts above 1400RPM) this is great for knowing when you need to change the oil or other engine items... for master on times I use the logfiles made by the IDU. (TV screen) -Rob ]
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