planedriver Posted February 14, 2011 Posted February 14, 2011 So sad to see all that hard work undone in this way, but at least he can hopefully get it fixed up in a few months, and most importantly is still here with us to do so. We'd all be happy about that.
Yenn Posted February 15, 2011 Posted February 15, 2011 It didn't catch that from a Jab. Sounds like a very unusual fault, wonder what caused it.
Mick Posted February 15, 2011 Posted February 15, 2011 Posted on VAF forums this afternoon;It was my RV12 down <hr style="color: rgb(209, 209, 225);" size="1"> Have just managed to get into the RV12 forum site and thought would explain what happened to my plane last saturday. As it was reported I was flying along at 1000 feet when the motor just stopped. ( i think the gear box seized) I would like to know if the gearbox seized and if so what caused it? I would also like to know what oil this motor was running on.
Kenchhidu Posted February 15, 2011 Posted February 15, 2011 Heaven forbid there should be a mechanical problem with a rotax. Chris Kent.
Guest Walter Buschor Posted February 15, 2011 Posted February 15, 2011 Hi Chris, a Rotax never fails ! The owner fails the Rotax! As to jab's well..... I said it before .... If they ever manage to sort it out I'll order a 230! Fly safe, Walter
Kenchhidu Posted February 15, 2011 Posted February 15, 2011 a Rotax never fails ! The owner fails the Rotax! That's exactly what jabiru say about there engines. It's all about the maintenance. Or lack there of. Chris Kent.
Student Pilot Posted February 15, 2011 Posted February 15, 2011 That's exactly what jabiru say about there engines. It's all about the maintenance. Or lack there of. Chris Kent. Even well maintained Jab's have problems.
Spin Posted February 15, 2011 Author Posted February 15, 2011 Errm, we're straying rather a long way from RV-12's and suspected siezed gearboxes here.
HEON Posted February 16, 2011 Posted February 16, 2011 Come on, don't let facts stop a good story. Quite new Rotax thus unlikely a maintance issue...Instalstion Issue?????
Spin Posted February 16, 2011 Author Posted February 16, 2011 And to think I've been called a stirrer! Incorrigible comes to mind:big_grin:
Guest Maj Millard Posted February 17, 2011 Posted February 17, 2011 The only time a Rotax gear box has problems, (especially a new one) is when someone puts Aviation grade oil in it. The Rotax manual clearly states what oil is to be used, and that it has to be a synthetic mix, for lubrication of the gearbox cogs. The same problem occured with Gazelles when they entered GA style flight schools. GA maintainers would put Aviation grade oil in them, and they would sieze every time. If this is what occured in this case, it is certainly not an engine problem, but an operator problem. Always refer to the manufacturers Instructions, especially on a new installation.There is a Rotax Service Instruction which clearly states what you can, and cannot use. .................................................Maj...
turboplanner Posted February 17, 2011 Posted February 17, 2011 So Major, are you putting the same argument for Jab engine failures?
Mick Posted February 17, 2011 Posted February 17, 2011 The only time a Rotax gear box has problems, (especially a new one) is when someone puts Aviation grade oil in it. The Rotax manual clearly states what oil is to be used, and that it has to be a synthetic mix, for lubrication of the gearbox cogs. The same problem occured with Gazelles when they entered GA style flight schools. GA maintainers would put Aviation grade oil in them, and they would sieze every time. If this is what occured in this case, it is certainly not an engine problem, but an operator problem. Always refer to the manufacturers Instructions, especially on a new installation.There is a Rotax Service Instruction which clearly states what you can, and cannot use. .................................................Maj... Maj, This is exactly what I was thinking when in my post #28 I said I would like to know what oil was being used in this engine..........
motzartmerv Posted February 17, 2011 Posted February 17, 2011 Jabs have gearbox's now??Rotax's dont fail, now ive heard evrything......
ahlocks Posted February 17, 2011 Posted February 17, 2011 Jabs have gearbox's now??Rotax's dont fail, now ive heard evrything...... Good grief Merv! :doh:We haven't really got started yet. There's still aliens and grassy knolls to go at least....
Tomo Posted February 17, 2011 Posted February 17, 2011 Just become a mechanic in either aviation or industrial.... Some just give us more work than others, but If it's man made, it's bound to fail one way or another. Including Rolls Royce (yep, valve head fell off)
motzartmerv Posted February 17, 2011 Posted February 17, 2011 yea locks, but ive heard them before...I spose its a testament to rotax, when one does fail it makes headlines on forums around the world... A clever marketing slogan "Rotax, sure, they fail too, but look at the other guys";)
ahlocks Posted February 17, 2011 Posted February 17, 2011 yea locks, but ive heard them before... Would you believe that it was a patch of extremely dense air that instantaneously stalled the prop? :patch:
motzartmerv Posted February 17, 2011 Posted February 17, 2011 lol....i heard the flux capacitor failed....(made in china)
ahlocks Posted February 17, 2011 Posted February 17, 2011 The chinese might have outsourced them from a undisclosed aero engine manufacturer in Qld....:ne_nau:
motzartmerv Posted February 17, 2011 Posted February 17, 2011 Ahhh, possibly, but said engine manufacturer would have known they were destined for rotax engines...the plot thickens
Guest Maj Millard Posted February 18, 2011 Posted February 18, 2011 Turbo, As far as I know the Jab engine requires an Aviation grade oil, as stated by the manufacturer. Rotax specifically prohibits the use of an aviation grade oil in the 912, because of the lubrication requirements of the gearbox. The same would happen to a Jab if you put a synthetic blend oil in them, I would imagine. I don't have much to do with them since they started failing about twenty years ago, and the factory really couldn't give a hoot back then either. Tell me something has really changed ?........................................................Maj...
turboplanner Posted February 18, 2011 Posted February 18, 2011 The same would happen to a Jab if you put a synthetic blend oil in them, I would imagine.............Maj...[/quote That was my point, I've seen many discussions on these forums where you just have to shake your head at the certainty that the amateur mechanic has just shortened his engine life by 70% by departing from the manufacturers specifications or procedures.
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