RE: Europa-List: Woodcomp SR3000/3 issue

[Bud Yerly <budyerly@msn.com>]

I believe your timed major inspection requirement is due.

I=92m sure it is a simple problem but the maintenance requirements of your 
prop manufacturer must be followed.

Woodcomp does not put its maintenance interval on their website.  However i
nstructions came with the prop.


Ref:  Woodcomp SR series Operators Manual

Hours of operation          Place of work                       Carried out
 by

25 hours                            On the aircraft                    Auth
orised mechanic

150 hours                          On the aircraft                    Autho
rised mechanic

300 hours                         At Service centre                 Produce
r or Service centre

450 hours                          On the aircraft                    Autho
rised mechanic

600 hours                        At Service centre                  Produce
r or Service centre

750 hours                          On the aircraft                    Autho
rised mechanic

900 hours                        At Service centre                  Produce
r or Service centre

1.050 hours                       On the aircraft                    Author
ised mechanic

1.200 hours                     Plant of producer                 Producer

WARNING A record of these periodical inspections of the propeller must be k
ept in the log book.


So I would recommend at 300 hours you pull the prop and fly it or send it t
o your local service center per the manufacturers maintenance instructions.


In the US this has become too much of a problem for Woodcomp owners due to 
down time and shipping costs.  We have had three low time (less than 300 ho
ur) Woodcomp props throw blades or the internal mechanism fail here in Nort
h America on just the Pipestral Aircraft, even though the planes were alway
s hangared and flown in blue skies.  So proper service and inspection of th
ese or any prop is essential.


Best Regards,

Bud Yerly


Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Window
s 10


________________________________
From: owner-europa-list-server@matronics.com <owner-europa-list-server@matr
onics.com> on behalf of graeme bird <graeme@gdbmk.co.uk>
Sent: Friday, August 3, 2018 5:16:35 AM
Subject: Europa-List: Woodcomp SR3000/3 issue


Just in case anyone else has the same problem:
twice on a hot day, after a no problems morning flight, on return my CS pro
p wouldn't come off fully fine or respond at all. Controller etc behaving a
s expected. The prop is about 6-8 years old and 325 hours and has been grea
t previously. I just had to fly old school controlling RPM by throttle and 
pitch to keep below max rpm (speed about 80knts).
After investigation of slip rings, wiring, switches etc, I concluded the mo
st likely cause was the two connections between the slip ring and switch wi
ring (blue and yellow/green), these are under heat shrink and comprise indi
vidual nickel plated screw terminals. I found the body plating to have come
 off and rusty and the terminal screw to also be corroded and rusty.

My plane is always in a hangar.

If anyone knows how the circuit works I'd be interested to know (its in the
 manual); I thought I had it worked out but had assumed normally closed swi
tches that open at the limit but it seems they are normally open closing at
 the limit which has me confused (an electronics engineer). Found slight si
gns of burn on one contact. I understand the hub/switch arrangement has bee
n changed on the current design.

Another point to note is that although I had painted the collars at blade r
oute with 2 part aluminium primer (which had halted some surface corrosion)
 During this investigation I saw that I hadn't painted all the way round by
 the switches. this required some further surface treatment. It would be a 
bad day if the collar split.

--------
Graeme Bird
G-UMPY -  Mono Classic/XS FFW 912S, Woodcomp SR3000/3W CS, trutrak Gemini 2
 axis AP, PAW, PFLARM core, ads-b out, 8.33khz, mode S, FP-5, Aera500, SD o
n Nexus, Smart A3
350 hours &amp; 6 years on the Mono, 930 total
g@gdbmk.co.uk


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