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Old 11-13-2018, 06:43 PM
LancairGuy LancairGuy is offline
Join Date: Nov 2018
Location: Fort Davis, TX
Posts: 9
Default B&C alternator brushes

Does B&C sell brushes for their alternators? (mine is the standby alt)
Or must one send it in, for this simple repair?
I see none on their alternator parts link.
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Old 11-14-2018, 07:18 PM
LancairGuy LancairGuy is offline
Join Date: Nov 2018
Location: Fort Davis, TX
Posts: 9

Originally Posted by RV8JD View Post
Sounds like a great question to pose to B&C directly.
Indeed (did you see the time stamp of my op? They were closed. Sometimes we refer to our knowledgable, 24/7 community for answers when vendors are closed)

However I did get a helpful pm saying B&C will not sell parts. If your ($2) brushes are worn, you must send it in for overhaul.
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Old 11-15-2018, 07:07 AM
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dlloyd3 dlloyd3 is offline
Join Date: Jun 2005
Location: Locust, NC
Posts: 391

Pull out the brushes, go by your local automotive alternator/starter repair and tell 'em you need some brushes for your airboat. They will fix you right up for just a few dollars.
RV-7 Tipup, Flying, I0-360,
Hartzell, Dual Skyview
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Old 11-15-2018, 07:22 AM
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Walt Walt is offline
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 4,881

What makes you think it needs new brushes? B&C recommends OH at TBO, I sent my 40A alt in at 1500hrs for a check-up, turns out it didn't really need anything and was working fine when I removed it for some other work. I had them do the full treatment anyway as long as it was there.
Walt Aronow, Dallas, TX (52F) RV7A, IO360, C/S, 1500+hrs

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs
Website:, Email:, Cell: 972-746-5154
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Old 11-15-2018, 09:01 AM
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Mike S Mike S is offline
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 14,396

By the time the brushes are worn out, the commutator may also need to be cleaned/trued up, and the bearings should be inspected carefully or just replaced as preventative maint.

This is assuming the brushed did not have some kind of early failure.
Mike Starkey
VAF 909

Rv-10, N210LM.

Flying as of 12/4/2010

Phase 1 done, 2/4/2011

Sold after 240+ wonderful hours of flight.

"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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Old 11-22-2018, 05:56 PM
LancairGuy LancairGuy is offline
Join Date: Nov 2018
Location: Fort Davis, TX
Posts: 9

upon pulling the brushes, can see the shaft is wobbling.
Sent to auto alt/starter shop.
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