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View Poll Results: On your current airplane, how reliable is/was your alternator
I have used an automotive alternator and had no failures in its first 250 hours. 94 25.07%
I have used an automotive alternator that failed within the first 250 hours. 22 5.87%
I have used a Plane Power alternator and had no failures in its first 250 hours. 114 30.40%
I have used a Plane Power alternator that failed within the first 250 hours. 42 11.20%
I have used a B&C alternator and had no failures in its first 250 hours. 101 26.93%
I have used a B&C that failed within the first 250 hours. 2 0.53%
Voters: 375. You may not vote on this poll

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  #121  
Old 05-16-2018, 03:59 PM
rv7charlie rv7charlie is offline
 
Join Date: May 2006
Location: Pocahontas MS
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Quote:
Originally Posted by RV10inOz View Post
I have just had my second failure at around 900 odd hours and now at 1380, so not even 500 on the last one.

VPX starts shutting things down, so one wonders what the high frequency spikes are damaging along the way.
Two failures on which brand/type?
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  #122  
Old 05-16-2018, 07:43 PM
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jeffw@sc47 jeffw@sc47 is offline
 
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Location: Simpsonville, SC (SC47)
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Default Mantra or Pixie Dust?

Quote:
Originally Posted by Vlad View Post
Good poll Steve. B&C (alt and reg) working flawlessly after first 2,500 hours. Standard installation no cooling hose and still on original belt. Bought new in 2007, flying since 2011.
Vlad, you need to document what you do special with your alternator so we can get the same endurance, especially with belt.
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  #123  
Old 05-17-2018, 05:16 AM
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RV10inOz RV10inOz is offline
 
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Sorry, I thought it was assumed as a plane power.

Not happy.
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  #124  
Old 05-17-2018, 09:04 AM
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catmandu catmandu is offline
 
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I voted way back when, made it past 250 hours with my 50 amp automotive, but it failed this month after just over 300 hours (internal voltage regulator failure). But, per the plan, I was able to go to NAPA the next morning when they opened at 7am and get a replacement for free (lifetime warranty) that actually works better than the first one per the test label on it (and no more low voltage warnings at idle).
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  #125  
Old 05-17-2018, 09:36 PM
svyolo svyolo is offline
 
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The couple of local places that "rebuild" alternators locally are getting a bad rep as the voltage regulators they use are failing quickly.

They both claim that they are buying the only available regulators. Myself, and a couple of colleagues that still are in the automotive business all say you can never trust any of the rebuilt alternators, starters, PS pumps from any of the big retailers. You might get lucky, but on an airplane?
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  #126  
Old 05-18-2018, 06:06 AM
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rv6ejguy rv6ejguy is offline
 
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Quote:
Originally Posted by svyolo View Post
The couple of local places that "rebuild" alternators locally are getting a bad rep as the voltage regulators they use are failing quickly.

They both claim that they are buying the only available regulators. Myself, and a couple of colleagues that still are in the automotive business all say you can never trust any of the rebuilt alternators, starters, PS pumps from any of the big retailers. You might get lucky, but on an airplane?
Totally agree. Unless you go right to Denso for a rebuilt (I listed a source here before), you'll usually get El Cheapo offshore regulators which are at the center of most failures. One of the popular EXP aircraft brands doesn't use OE Denso parts either and look at the failure rates in this poll.
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  #127  
Old 05-18-2018, 07:00 AM
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DanH DanH is offline
 
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Quote:
Originally Posted by rv6ejguy View Post
One of the popular EXP aircraft brands doesn't use OE Denso parts either and look at the failure rates in this poll.
The popular Plane Power 60 amp appears to be a custom version of this unit....

https://www.unipoint.com.tw/product_...e.php?p_id=508

...with its #662 regulator modified by the addition of a jumper (Unipoint part number 6621).

Unipoint is a Chinese division of Bosch.

http://www.bosch-aa.com.cn/en/intern...ss_011211.html
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Last edited by DanH : 05-18-2018 at 07:03 AM.
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  #128  
Old 05-18-2018, 12:25 PM
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twsurveyor twsurveyor is offline
 
Join Date: Jan 2005
Location: Ridgetop, Tennessee
Posts: 134
Default 60 amp Van’s internal regulated alternator!

Quote:
Originally Posted by bhester View Post
I have a Van's 60amp internal regulated alternator that is my original Feb. 2007 alternator. 850 hrs and still going. No blast tube.
Ditto here Bobby, 830 hours with blast tube! 👍🏻
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  #129  
Old 05-18-2018, 04:53 PM
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RV10inOz RV10inOz is offline
 
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830 hours....I will check my logs today, but I think it is time you purchased a spare.

just sayin'
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  #130  
Old 05-18-2018, 11:49 PM
SHIPCHIEF SHIPCHIEF is offline
 
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I have a 40A Denso mini that has 160 hours. It had an early failure: The plastic Brush boxes were warped and stuck the brushes so eventually they lost contact with the com rings. a few bux for a new piece of plastic, and the alternator has been flawless.
But!! Van's light weight alternator bracket for Narrow Deck cases was too light, it cracked and had to be replaced with a heavier Lycoming part. Might be some balance issue, or the Gates brand belt might be uneven...?
Keeping the weight down and the reliability up is a challenge.
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