New Tachometer

blueldr · Post by **blueldr** » Tue Dec 20, 2005 4:48 am

When installing an electronic tach, annother factor to consider is the RPM at which the tach starts counting hours. The UMA tach, which is the one I wanted to use but was discouraged by the manufacturer, starts counting at 1800 RPM. The tach I ended up with, a digital read out, started counting hours at 800 RPM. That is too low to suit me.
It is something to consider when contemplating a new instrument.

N170CT · Post by **N170CT** » Tue Dec 27, 2005 7:55 pm

A lot of verrry interesting comments. Does anyone have any experience with the Horizon P-1000 tach?? Was seriously considering installing this tach in my 0-300C powered 170B. Does it suffer the same limitations as the other digital tachs mentioned???
chuck

blueldr · Post by **blueldr** » Wed Dec 28, 2005 4:24 am

The electronic tachometer of which I speak in the post above is a "Horizon". The constant flopping of the digits bugs me and I don't like the hour count starting at 800 RPM.'

170C · Post by **170C** » Wed Dec 28, 2005 1:33 pm

I have to agree with the vrs comments made by others regarding the problems with elec. tachs. Too bad we can't get one similiar to the electric tachs we used to see as add ons to our older vehicles that had an analog needle instead of digits. Some enterprising sole needs to develop one as I think there would be a market for them.

CraigH · Post by **CraigH** » Fri Mar 03, 2006 1:11 am

Miles, which one did you end up going with? The one that uses 2300rpm for cruise, or the one that uses 2400rpm for cruise?

cessna170bdriver · Post by **cessna170bdriver** » Fri Mar 03, 2006 3:49 am

To tell you the truth Craig, this had totally slipped my mind.

I will probably go with the one that counts at 2400, since it's closer to the 2450 for our engine. (Also, it won't rack up hours as fast!

) If I can, I'll get it marked per George's reccommendation.

Miles

CraigH · Post by **CraigH** » Fri Mar 03, 2006 8:03 pm

cessna170bdriver wrote: I will probably go with the one that counts at 2400, since it's closer to the 2450 for our engine.

Just ordered mine today (the one that counts at 2400). With hour meter set and custom markings, it will be shipped in 3 days from Aircraft Spruce.

c170b53 · Post by **c170b53** » Fri Mar 03, 2006 9:50 pm

Is it approved for install?

CraigH · Post by **CraigH** » Fri Mar 03, 2006 9:54 pm

c170b53 wrote:Is it approved for install?

yes.

cessna170bdriver · Post by **cessna170bdriver** » Sat Mar 04, 2006 3:08 am

CraigH wrote:Just ordered mine today (the one that counts at 2400). With hour meter set and custom markings, it will be shipped in 3 days from Aircraft Spruce.

What did you have the hour meter set to? Total engine time, airframe time, old tach time?

Miles

cessna170bdriver · Post by **cessna170bdriver** » Thu Mar 09, 2006 9:16 pm

CraigH wrote:Just ordered mine today (the one that counts at 2400). With hour meter set and custom markings, it will be shipped in 3 days from Aircraft Spruce.

Craig, Have you recieved your tach yet? I am curious as to how well the markings are done.

Miles

Post by **GAHorn** » Thu Mar 09, 2006 11:29 pm

cessna170bdriver wrote:
CraigH wrote:Just ordered mine today (the one that counts at 2400). With hour meter set and custom markings, it will be shipped in 3 days from Aircraft Spruce.
What did you have the hour meter set to? Total engine time, airframe time, old tach time?

Miles

I recommend having the tach read "Zero" (Time Since Overhaul)

CraigH · Post by **CraigH** » Fri Mar 10, 2006 12:56 am

cessna170bdriver wrote: What did you have the hour meter set to? Total engine time, airframe time, old tach time?

Miles

All of the above.

They are the same on my airplane; 1310 hours.

The tach came in today, and the markings look great! I'm very impressed with the looks and hope to get it installed sometime in the coming week.

CraigH · Post by **CraigH** » Wed Mar 22, 2006 1:20 am

New tach is on and works like a charm! Wish I'd gone this route in the first place rather than having the old one rebuilt and refaced.

Live and learn.

cessna170bdriver · Post by **cessna170bdriver** » Fri Apr 14, 2006 7:50 pm

Finally got my new tach yesterday. I purchased from Spruce, but the markings (per George's suggestion) were silkscreened at the Mitchell factory and drop shipped to me. The whole process took about 2 weeks. According to the calibration card, it should work as well as it looks. The needle is right on 300, but I had to take an oblique to keep the flash from washing out the face.

Miles

The International Cessna 170 Association

New Tachometer

Electronic Tach