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D. Porter
Sergeant First Class
Gender: Male
Location: Ventura, CA
Registered: Apr 2012
Status: Offline
Posts: 84
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Posted Tuesday, June 12, 2012 @ 03:57 PM
I added one of these vibration activated engine hour meters to my panel. It's designed for surface mounting but I attached it with velcro until I could determine if I wanted it permanently. I doubt that it will be sensitive enough to respond to engine shutdown in flight, but otherwise seems to work well enough as an engine time meter. There's a wire loop on the back of the units that you cut to activate it before installation.
There are several models, the Enmco http://enmco.thomasnet.com/viewitems/enm-counting-instruments-lcd-hour-meter/hour-meters-t56-vibration-activated-lcd-hour-meter? which sells for $40 from Allied Electronics, and also this eBay version from China for $15 http://www.ebay.com/itm/170718999570?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#ht_5208wt_1165 . Although they look the same, the fit and finish of the Enmco model is superior, making me think the eBay model is a copy although it might work well enough.
Don
[Edit by D. Porter on Tuesday, June 12, 2012 @ 03:58 PM]
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dannparks
Sergeant Major
Gender: Male
Location: Parkside Airpark, Battle Ground, WA
Registered: Oct 2006
Status: Offline
Posts: 391
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Posted Tuesday, August 28, 2012 @ 05:49 PM
I put one of these in my panel and activated it (clipped the wire) when I began testing the engine. However, after doing a lot of sanding, banging, filing, etc. during additional work and assembly, I noticed that it was timing all of that. So I now have a number of hours "on the hobbs". A great technological concept, just be aware that it might be "on" just moving the plane around, climbing in, etc.
-------------------- Dann Parks • RF4D #4051 N2188 • now flying!
Pictures at: https://picasaweb.google.com/111628310900713778468/RF4D_N2188?noredirect=1
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D. Porter
Sergeant First Class
Gender: Male
Location: Ventura, CA
Registered: Apr 2012
Status: Offline
Posts: 84
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Posted Tuesday, September 4, 2012 @ 04:13 PM
Hi Dann,
Yes, I've noticed the same sensitivity in my hour meter. Moving the plane, or getting in and out will all activate the counter, and it does overrun beyond when the motion stops. Still. probably 99% of the accumulated time will be due to engine run, so it may serve some purpose. I'd rather have a Hobbs meter but without an electrical system I can't.
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Bob Grimstead
Captain
Gender: Male
Location: Perth, Western Australia or West Sussex, England
Registered: Dec 2006
Status: Offline
Posts: 2029
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Posted Thursday, September 6, 2012 @ 06:44 AM
Doesn't somebody make a battery-powered hours meter operated by an airspeed switch?
Yours, Bob
-------------------- Flying and displaying Fournier RF4Ds VH-HDO and G-AWGN, building replica RF6B G-RFGB and custodian of RF6B prototype F-BPXV
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