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E80 starter 12v

I’m looking for a serviceable E80 12v starter for my E225, or suggestions on where to get one overhauled.
Thanks

Model: Bonanza B35
Posted 11/7/2023 - 3 months ago
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William, I think that Aircraft Accessories of Oklahoma did mine a while back (918) 835-9924. Same basic starter used on R985 450 HP radial engine. What is it doing (or not doing)?

Posted 11/7/2023 - 3 months ago
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Aircraft Accessories rebuilt mine about three years ago. It turned the engine with a significant increase in torque and surged. I asked the technician who tested it and was advised that it is stronger than I’m used to due to the rebuild. After about three years of starts it damaged gears in my accessory case.
My back up starter turned the engine smoothly, but was leaking oil from the motor. I sent it to Consolidated Aircraft in NY for a rebuild, but they weren’t able to get parts, mainly the armature.
The folks at Aircraft Accessories rebuilt my flap and gear motors which work great, so I’m not trying to drag on them. I’m thinking there was a flaw in the starter they rebuilt for me that didn’t show up when they tested it.
Suggestions would be much appreciated.

Posted 11/8/2023 - 3 months ago
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William, the E-225 engine accessory case drive gears and starter all work together fairly well. I am on my 3rd E-225, having overhauled 2 of them myself. On both overhauls, I took Lew Gage’s excellent advice and sent all of the engine accessory drive gears out for magnaflux inspection (along with all the other engine internals that weren’t replaced). I have over 3000 hours behind an E-225 and the E80 starter has always worked fine. Lew has what he calls his “tick trick” to lessen starting loads on the engine, but I just have not found that necessary. When is the last time your engine was apart? Were all those gears back there magnafluxed? I O/H my engine every 2000 or so hours, just on principle.

Posted 11/8/2023 - 3 months ago
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I have a collection of failed engine gears that were broken by E80 starters. If you watch what happens with an E80 starter that is on the shop bench when the starter jaw advances on the starter to engage the engine starter jaw gear you will see that by the time that starter jaw is extended that the starter motor is at full speed. There is a clutch in the starter that is set for 200 foot pounds of torque that should reduce the impact of the engagement of the starter jaw and the starter jaw gear. Well maybe it does but there is a very high impact that results from the starter motor being clear up to speed. In fact, if you watch the propeller and other engine parts that can be seen at that moment of engagement you will see the engine torque in the mounts due to the severity of the engagement. However, if the "tick trick" is used the engagement is very gentle and then when the starter button is again pressed the starter motor does not accelerate to full speed before the engine begins to rotate but rather begins to rotate the engine smoothly without the high impact forces. When all of the gears involved in the engine and starter were new they would probably take that impact force. But they are not new now and stress after making many starts is in the gears and ready to cause gear breakage if those high impact starts continue. If there is a gear failure in the engine or starter it gets to be very costly to repair. The "tick trick" is easy to learn and probably will avoid having a failure of those gears.

Regards, Lew Gage

Posted 11/10/2023 - 3 months ago
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E80 starter 12v