You should be able to get an hour meter which is turned on by the Bosch W (tacho) terminal on the alternator.
Alternatively, if your alternator doesn't have a W terminal what about a vibration sensor switch? They are cheap... Check out HERE <https://au.rs-online.com/web/p/vibration-sensors/7948833/?cm_mmc=AU-PLA-DS3A-_-google-_-PLA_AU_EN_Automation_%26_Control_Gear_Whoop-_-(AU:Whoop!)+Vibration+Sensors-_-PRODUCT_GROUP&matchtype=&pla-338994017905&gclid=CjwKCAjwmqKJBhAWEiwAMvGt6OeL1dszK_62zvwndrw-XXX0LuA0GxYl-LMWqTAeauCoV-b2zs8S4RoC9U4QAvD_BwE&gclsrc=aw.ds> Connect one in series with an airswitch on the ASI line. I would be a bit reluctant to run extra oil lines. The L2000 oil pressure crankcase screw thread is notorious for developing cracks and stripping with just the tiniest bit over overtightening. I would not let anyone remove the pressure sender and screw in other fittings like T pieces unless absolutely necessary and you completely trust them with the life of your engine!. regards Rob Rob Thompson 0429 493 828 On Fri, Aug 27, 2021 at 1:25 PM Michael Stockhill <sto...@gmail.com> wrote: > I would explore a tee fitting for the existing oil pressure sender so you > could add an oil pressure switch (most of these close with four pounds of > pressure) wired to a Hobbs meter. I would sign it off as a minor > alteration, especially since it is a non-certified engine. > > Might be fun to learn how the newer flight computers used in self > launchers differentiate running and non running time for recordings > flights. > > > On Thu, Aug 26, 2021, 6:30 PM Kurt Redinbaugh <redinbau...@gmail.com> > wrote: > >> Thank you for the information, Michael. >> I had sent the tacho to them and they returned it with a message that >> they couldn't fix it but to try the shop in Virginia Beach...who also said >> sorry. >> So I think I'm facing either using a stopwatch and keeping the engine >> time manually or going with the avionics shop at Minden who wants $750 to >> install an hour meter that works off the oil pressure. Yikes! >> The question I have is that since the pilot handbook says an engine hour >> meter is required in the minimum equipment list can I use a stopwatch? >> Still only 1 1/2 mile vis on a good day here so still ground bound. >> k >> >> On Mon, Aug 23, 2021 at 7:09 PM Michael Stockhill <sto...@gmail.com> >> wrote: >> >>> Kurt, et al. >>> >>> I had my VDO tach overhauled and repaired in 2015 by: >>> Palo Alto Speedometer, Inc. >>> 718 Emerson Street >>> Palo Alto, CA 94301-2410 >>> (650) 323-0243 >>> www.paspeedo.com >>> >>> At the time, I requested them to keep the hour meter time, and the >>> instrument face did not need refinishing, which they also provide if >>> desired. >>> >>> Suggest a web search to see if they are current. >>> >>> Michael >>> >>> >>> >>> On Mon, Aug 23, 2021 at 11:08 AM Kurt Redinbaugh <redinbau...@gmail.com> >>> wrote: >>> >>>> All >>>> The hour meter built into the tach on my ship #3660 has quit working. I >>>> have sent the tach to VDO here in the New World and they say it cannot be >>>> repaired due to it's age. Has anyone out there 1) a source for repair, 2) a >>>> suitable replacement, 3) a used trach I could purchase or 4) an >>>> alternative hour meter arrangement. >>>> Your help would be much appreciated. >>>> I am presently not able to fly due to the severe smoke in the Reno area >>>> so the timing is right to get this situation handled. >>>> Many Thanks >>>> Kurt >>>> >>>
