Interav alt and Plane-power regulator

[walt.buskey]

My A&P decided probably best to replace the "not certified for use in Piper" Zeftronics R15100 with a Plane Power R1224... along with all the what-looks-like original wiring.... really yucky!

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[Jeff J]

Peter,
I'm not exactly sure what Piper recommends, it is not stated in my POH for a 52 PA-22, but I've always heard 14.2 +/- .4 volts from my IA
. Mine is currently at about 13.8 volts so I want to turn it up a bit.

I always thought 14.2 was ideal but a fellow IA who works for an avionics shop told me the other day 13.8 is better. Especially if you have a Gill battery. He did some reseach on the subject because one of their customers was changing batteries every year. I got to checking the airplanes I work and the aircraft charging at a lower rate have older batteries (3-4 years and still going). The aircraft with systems set to charge at a higher voltage were going through batteries every year or 2. Not hard evidence but enough for me to make some regulator adjustments where possible to see what happens.

[Steve Pierce]

Quality Aircraft Accessories has spare parts and does overhauls. Have replaced a few sets of brushes in the Inter Av alternators.
https://www.qaa.com/about/news/quali...r-product-line

[at7615]

Called QAA yesterday, would not sell me a brush assembly or bearings.

[Gilbert Pierce]

I bought a set of Interav brushes 20 years ago and kept the box. They came in a box labeled Leece-Neville, Prestolite. I pulled the Interav sticker off, it was hiding the Leece-Neville-Prestolite number 103-15. The bearings are standard bearings used in most all automotive alternators such as Delco. I believe they are either 202 or 203 bearings.
I believe the attached Service Manual and Parts manual covers the alternator Interav used.

[at7615]

Thanks Gilbert!

[Steve Pierce]

Called QAA yesterday, would not sell me a brush assembly or bearings.

I guess QAA just wants to do overhauls. Sad, that is why I chose not to use them on a magneto repair, it was all or nothing. Luckily there are places that can just fix what needs fixing without replacing everything.

[at7615]

Mine was serviceable, just checking it and replacing common wear items. Building my 0-320 from the ground up and run into this crap over something as trivial as brushes and bearings. QAA is only hurtin themselves cause now Im pissed! cui bono

[at7615]

Need to wire my R1224 to the Interav, do I connect the field from R1224 to regulator terminal of Interav? What about Aux? Would like to install a warning light, 100 milliamp needed, whats the easy way?

[at7615]

Mine was serviceable, just checking it and replacing common wear items. Building my 0-320 from the ground up and run into this crap over something as trivial as brushes and bearings. QAA is only hurtin themselves cause now Im pissed! cui bono

Got USA made parts and serviced it myself, piece of cake! These are industrial alternators, bearings on both ends of armature, built like a brick s#!#house!