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RE: Europa-List: Airmaster AP332: replacement of slip ring brishes

Subject: RE: Europa-List: Airmaster AP332: replacement of slip ring brishes
From: Bob Harrison <ptag.dev@tiscali.co.uk>
Date: Thu, 19 Apr 2012 19:36:39
Hi! Raimo

First off ....how is that little girl?

I hope now home and happy?


If my memory serves me right I think the block was  0.0025=9D 
clear of the slip ring, but with any slack in the propeller assembly 
must be pushed back for worst case scenario.

Trailing , leading or straight provides differing brush loads .... 
Leading being the heaviest and hence more wear more quickly.

Regards

Bob H  G-PTAG


From: owner-europa-list-server@matronics.com 
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Raimo 
Toivio
Sent: 19 April 2012 17:48
Subject: Re: Europa-List: Airmaster AP332: replacement of slip ring 
brishes


Dear Bob,


do you remember how much the MT brushes protrude out of the box ie. what 
is the lenght of the unsupported brush part = the cap between slip 
rings and a brush box brush side ?


I my case (just what happen to be in my Rotax & Airmaster combination) 
this measure is about 1 mm or even less. I think then it is no matter if 
brushes are a bit =9Ctrailing=9D,  
=9Cstraight=9D or even =9Cleading=9D.


They will anyway soon worn out to totall slip ring contact.


Cheers, Raimo

Finland

OH-XRT


From: Bob Harrison <mailto:ptag.dev@tiscali.co.uk>  

Sent: Wednesday, April 18, 2012 11:21 PM


Subject: RE: Europa-List: Airmaster AP332: replacement of slip ring 
brishes


Hi! Svein ,

I would still prefer to measure the actual angles and especially prove 
them to be =9Ctrailing =9C

Regards

Bob H 


From: owner-europa-list-server@matronics.com 
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Sidsel & 
Svein Johnsen
Sent: 18 April 2012 20:20
Subject: SV: Europa-List: Airmaster AP332: replacement of slip ring 
brishes


Hi Bob,


Appreciate your comments regarding correct installation of the brushes 
relative to the rings.


My Airmaster  was delivered with a brush bracket for Rotax 912ULS.  The 
holes matched exactly the holes on the left side of the gearbox, and the 
distance to the slip rings looks right (small unsupported length of the 
brushes sticking out, yet clearance to avoid the bracket touching the 
rings).


Regards

Svein


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