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I need a alternator for 1967 150, 12v,50A. Three bolt mount.
Thanks,
George

Welp, > here < [plane-power.com] it is!

I have a spare 24V alternator. How 'bout double the power at half the 12V cost?

The 1963-1969 parts manual shows the alternator (Cessna 611501-0202 for 150 S/N 15064533 and up, which includes the 1967 model) as being rated at 60 amps, not 50.

Roy

The tag on my alternator says 14v/50amp. It might not be the original. I have since found a 15v/60amp overhauled alternator.

60 amp alternator to match the 60 amp breaker - right?

Dunno. Could just be a peak vs continuous output spec for the same alternator. But you wouldn't want to use a 60 amp fuse with an alternator not rated for 60 amps continuous. Fuses are typically specified to pass the rated current for an indefinite period of time, only blowing when the current exceeds the rated current. That is, a 60 amp fuse will never blow when passing 60 amps, even continuously. The time it takes to blow depends on the type of fuse and how great the overload is, but there must be an overload beyond the rated current for it to blow.

Roy

The OEM (Cessna) alternator is 60 amp. But the aftermarket alternators from PlanePower or JASCO are 50 amp. Perhaps you have one of those? See if there's an STC for an alternator conversion in your plane's paperwork.

If I recall, the JASCO alternator can only be rebuilt by JASCO (they withold the parts and data). I don't know about PlanePower's rebuildability, but they use a Nippondenso alternator so I would *think* it's easily rebuilt.

Start with the IPC or STC. Matching a wrong part with another wrong part is ... well wrong!

This may not be 100% accurate, but I believe it is. Please point out any discrepancy.

All production 150's came with a 12v battery - 14v electrical system (a "15v" alternator[?] would still be part of a 12v-14v regulated system, but I don't think I've ever seen one rated as such).

1959 150 - came with a 20 amp generator.

1960 150 thru 1966 150F came with a 35 amp generator standard on Trainer, optional on other models. The IPC allows use of 35 amp generator/voltage regulator/circuits and circuit protection on 1959 thru 1966 models (BUT, all components in charging and other circuits must be appropriate for the load).

1964 150D and up - Battery mounted on firewall (previously mounted behind seat).

1967 150G and up - 60 amp alternator standard all models (only 60 amp alternators were ever listed in the IPC).

BTW, George, your 150H is a 1968 model by s/n. The FAA doesn't recognize "year model", only date of airworthiness certification. It was made airworthy in 1967, but it is still a 1968 model according to Cessna (just like there are 2013 model cars and trucks on the market in 2012). When ordering parts, make sure you use the serial number and order parts for a 1968 model.

The 1960's series 172's tracked closely with the 150's of the time in terms of equipment. I had a 35 amp generator & last year upgraded it to a Plane Power 50 amp alternator and solid state regulator. Plane Power guys was very easy to work with (unlike Jasco who seem uninterested). And, check to see if the Jasco doesn't require you to install an airscoop to keep it cool. I had to source a 50 amp gauge and found a pretty good one at a salvage yard.

I couldn't be happier with the PP alt. Solid voltage on the bus (unlike my generator) and all the power I can use.

Great upgrade, you save some weight too. It helps to have someone who *really* knows their stuff w/ electrics. I had Titus...'nuff said.