Tachometer Magnetic Pickup Needed
 

I’m pretty sure the pickup on my front engine is bad. I’ve swapped tach leads to check the gauge and checked the wiring. Any ideas on where to find a replacement, besides Continental? They want about $1k.

Also, any suggestions on how to replace it? Remove the starter to get access? I can barely see it, let alone reach it.

Tach Pickup
 

OhioSkymaster,

Removal of vacuum pump makes it much easier to access the front Tach pickup.

Regarding sources - check with Don Nieser.

Jeff

What are you symptoms?

The front tach indication was intermittent, then failed altogether. I swapped the front and rear engine magnetic pickup connections to the tach gauge and proved that the fault was not in the gauge. I verified wiring and connections to the front magnetic pickup were good, then removed the pickup from the magneto. It reads as an open circuit on a DMM. I measured the rear-engine pickup and it does measure a resistance, though I don't recall the value at the moment. I have not been able to locate any specs on the part, beyond the old and replacement part numbers.

Can you post a picture of this pickup? I might have an extra.

Kevin

Is this what you are looking for?

Kevin

I had the same problem. Took mine out and replaced with the aerospace logic digital gauge. Its awesome. Would do it again in a heartbeat.

http://www.aerospacelogic.com/index....product_id=238

https://youtu.be/ot-GQDERFvw

Did you need an STC for it?

From the product page:

Certification / Compliance
TSO C49b
Canadian STC
FAA STC
Certified as primary replacement

I saw that. But what I didn’t see is the list of approve aircraft for the STC. So I’m asking if there’s more documentation then what is displayed on the website?

Its all on their site

http://www.aerospacelogic.com/docs/A...0Issue%202.pdf

Pick-up
 

Kevin (kbecker),
If Ohio does not take you up on the offer for the tach pick-up, I will. I just troubleshot my rear tach and determined it is the pick-up. I have found a source for a new one, but if I can get a better price on a used one I would prefer that. I have an Insight G4T with electronic tach which is far more accurate, however, it is not legal to replace the old Cessna primary.

Jeff

Ah, that’s what I was looking for. Thanks.

Also, here is the STC showing it can be used as a primary 👍


http://www.aerospacelogic.com/store/...0SA02825NY.pdf