Today's Message Index:
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1. 12:35 AM - Re: Ignitech Modules (Griffo)
2. 02:57 AM - Re: Re: Ignitech Modules (Andy Ringrose)
3. 04:43 AM - Re: Ignitech Modules (Griffo)
4. 05:21 AM - Re: Re: Ignitech Modules (Steve Ivell)
5. 06:18 AM - Re: 914 Servo Problem -- broken copper wiper -- is there a fix? (PCahill)
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| Subject: | Re: Ignitech Modules |
Richard:
Thanks for that - I did Google them, so was able to get most of what you have told
me - what I am really interested in, is how they perform compared to the original
Ducati module's.
Price is but one factor - more import is reliability and efficiency.
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46
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| Subject: | Re: Ignitech Modules |
Fitted these to cure cold weather non starting issues on a 912ULS (2005) 500
hours in service. Rotax CDI replacements at the time were being quoted at
circa 1000 GBP each with an 8 week lead time.
Performance is identical to the Ducati modules but includes the sub 1000rpm
retarded ignition feature which I believe is standard on the later version
Rotax CDI's.
Andy
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Griffo
Sent: 11 April 2021 08:35
Subject: Europa-List: Re: Ignitech Modules
Richard:
Thanks for that - I did Google them, so was able to get most of what you
have told me - what I am really interested in, is how they perform compared
to the original Ducati module's.
Price is but one factor - more import is reliability and efficiency.
--------
46
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| Subject: | Re: Ignitech Modules |
Wow!
As I understand it you are saying that the Ignitech modules are the equivalent
of the Rotax (Ducati) "Soft Start" modules at a fraction of the price.
I would be interested:
To hear from as many people as possible, who have actual flight experience with
these modules (bit of a product survey/review).
Some idea of how long (flight hours) they have been using the Ignitech modules
Have they also fitted the Rotax "Soft Start" flywheel?[/list]
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46
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| Subject: | Re: Ignitech Modules |
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| Subject: | Re: 914 Servo Problem -- broken copper wiper -- is there |
a fix?
ALL FIXED! See below for details.
Thanks to everyone for suggestions on repair or replacement of my 914 turbo servo
with the broken wiper. I learned more than I ever wanted to know about this
system; here are some notes to make your life easier and cheaper for when you
have a similar problem!
First, I bought a used 914 servo through eBay as a quick fix in case other, more
time-consuming searches failed. I didnt use this servo and now have it as a
spare. Per another contributors suggestion, I also purchased a used Kawasaki
Ninja ZX10R ZX1000J exhaust valve servo motor 21174-0005 through eBay for a lot
less money ($25). Confirming one of the comments I received, this Japanese-manufactured
Kawasaki motorcycle device appears to be a drop-in replacement for
the 914 servo, other than having a hexagonal rather than round pulley. That
is, the Ninja servo appears to have the same wiring, the same case, the same
circuit board, and critically, the same gear and wipers. Im also keeping this
part as a spare. There are plenty more on eBay for less than $35, or new for
about $300 on the web, which is still about $200 less than the Rotax-supplied
part (warning: different part number!)
As one person pointed out, my broken wiper may have been the result of a manufacturing
defect. Maybe so. However, when I bought the plane from the builder
in California in 2018, the engine only had about 200 hours over the last 12-years,
and my plane now sits for months in the winter inside a cold hangar in Ohio.
Therefore, it is also possible that the dielectric grease caused the wiper
to stick to the circuit board, initiating a crack one day upon power-up. Im
not impressed by the design of this servo because the servo rotates bidirectionally,
in one direction the wiper drags, and in the other direction the wiper
plows through the grease, which I picture has putting a lot of force on a small
part. The design must work OK for almost everyone, though.
Ultimately, I installed a gear, including the wipers, that I received from Ronnie at South Mississippi Light Aircraft (www.flysmla.com). Ronnie had a bag of failed servos next to his desk and I accepted his offer to pull a good gear and wiper out of a servo with corroded electronics (the wiper is in perfect condition). This used gear and wiper work perfectly; the TCU + servo appear to be self-calibrating upon start-up. It would make too much sense for Rotax to offer the gear + wiper as a spare part. Unfortunately.
The overall repair isnt too bad only confusing to diagnose for a novice. If the
orange TCU caution light blinks immediately upon power-up, then a sensor or
wiring problem is the likely cause. If the orange caution light comes on for
a second or two (as it should), goes off, and then a few seconds later starts
to blink, then the problem is more likely with the servo (like my problem). Watch
out for, and dont lose, the 3 mm diameter brass thrust plate on the wire
clamp on the pulley. Also keep the aluminum sleeves in the rubber mounting grommets,
which may or may not arrive with your used part. The Rotax-Owner website
has an easy-to-follow video about properly adjusting the cable to the waste
gate.
Thanks again to everyone for your advice
--------
N914TX
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