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1. 12:56 PM - Home made soft start module for Rotax 914 (trevord)
2. 02:11 PM - Re: Home made soft start module for Rotax 914 (Robert Borger)
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| Subject: | Home made soft start module for Rotax 914 |
Hello all,
My first posting on Matronics.
I have purchased a Europa kit which was started 19 years ago of wonderful quality
workmanship but has an un-started, still inhibited 19 year old Rotax 914 engine.
From my research, it would seem the soft-start option is critical to the
sprag clutch lasting for any length of time. I have read about the Bullyhawk
modules, but they are no longer available and new Rotax ignition modules are expensive.
I read on the Rotax forum about a circuit that was home made that retarded the
ignition on start-up by a user called Turbo-Tom but I cannot find enough information
to work out how to replicate this and Turbo-Tom seems to have moved-on.
Do any folks out there know of a reliable home-made solution to the defect that
was built-in to the original Rotax engines in the form of inadequate time before
the timing switched to fully advanced, which is known to destroy the clutch
in short order.
My local Rotax importer of course suggests I buy a new engine.
Regards
Trevor
--------
Trevor
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481584#481584
Message 2
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| Subject: | Re: Home made soft start module for Rotax 914 |
Trevor,
FWIW, YMMV. I have been flying behind a 914 that is about 15 years old now. The
only change I have made to my 914 regarding starting was to install the newer,
high-torque starter. My engine starts quickly and easily. I see no need
for any soft-start module, ignition retarding software or any other such stuff.
I suggest you finish your kit following the factory instructions and evaluate
how the engine start goes before you get into any changes to the 914.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop (130 hrs).
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP, Hercules Prop.
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Jul 11, 2018, at 2:55 PM, trevord <trevord@orcon.net.nz> wrote:
Hello all,
My first posting on Matronics.
I have purchased a Europa kit which was started 19 years ago of wonderful quality
workmanship but has an un-started, still inhibited 19 year old Rotax 914 engine.
From my research, it would seem the soft-start option is critical to the
sprag clutch lasting for any length of time. I have read about the Bullyhawk
modules, but they are no longer available and new Rotax ignition modules are expensive.
I read on the Rotax forum about a circuit that was home made that retarded the
ignition on start-up by a user called Turbo-Tom but I cannot find enough information
to work out how to replicate this and Turbo-Tom seems to have moved-on.
Do any folks out there know of a reliable home-made solution to the defect that
was built-in to the original Rotax engines in the form of inadequate time before
the timing switched to fully advanced, which is known to destroy the clutch
in short order.
My local Rotax importer of course suggests I buy a new engine.
Regards
Trevor
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