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Finding gearbox serial number via engine serial number

  • Simon Cooke
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5 months 3 weeks ago #16220 by Simon Cooke
Simon Cooke created the topic: Finding gearbox serial number via engine serial number
I have a 912ULS (built 2006) fitted to a P and M GT450 trike. The engine serial number is 5646615. The serial number on the gearbox housing is very faint and unreadable due to surface corrosion. I need to know because the engine number is listed on SB-912-056-UL as an affected engine. The engine has done 360 hours. There is no apparent galling on the gear set but I guess a Mandatory SB is a Mandatory SB. My question is ... Is it possible to find out the gearbox serial number that was originally shipped with this engine?

Thanks in advance for any help!

Simon
www.AeroFixAviation.co.uk

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5 months 3 weeks ago #16223 by RotaxOwner Admin
RotaxOwner Admin replied the topic: Finding gearbox serial number via engine serial number
Yes, that information is in the factory records for your engine.

Originally, 5646615 came equipped with gearbox part number 887703, having gearbox serial number 32246.
(Of course, unless you have the complete service records, there no guarantee that you still have the original gearbox.)


Incidentally, 5646615 is a ROTAX 912 ULS produced 15-May-2006.
Original factory configuration:
without fuel lines
UL2 I=2,43 with clutch
without vacuum pump
with green valve covers
without mech. tachom. pick up
without external generator
without air guide baffle
with FLY-DAT connection
with nipple conn. for oil pump
with expansion tank
without air box
without engine truss
starter standard
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5 months 3 weeks ago #16225 by Simon Cooke
Simon Cooke replied the topic: Finding gearbox serial number via engine serial number
Wow! That was impressive - thanks very much!

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4 days 15 hours ago #17751 by James Sledd
James Sledd replied the topic: Finding gearbox serial number via engine serial number
Similarly, I have an old 912UL (s/n 4152939) - (that has been upgraded to the 912 Xtra 95 hp version) - with a gearbox s/n 10193. I'd like to know what model of gearbox this is (A. B or C version) and what the gear ratio is 2.27:1 or 2.43:1. Thanks for a great, informative forum.

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4 days 2 hours ago #17758 by RotaxOwner Admin
RotaxOwner Admin replied the topic: Finding gearbox serial number via engine serial number
4152939 is a ROTAX 912 UL produced 18-Aug-1994.
This engine (and most other engines more than twenty years old!) has no original configuration records in the factory database, and we are not able to determine what was its original gearbox.

We have no records of any gearbox with the serial number 10193. Can you see a six digit part number on the gearbox? The gearset inside may have been changed, but if the gearset's own serial number is recorded in the database, we could tell you the ratio. In any event, you can determine the gear ratio by counting the teeth... ( see www.rotax-owner.com/en/rotax-forum/3-4-s...io-by-gear-s-n#17272 )

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