---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Fri 06/25/10: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:24 AM - Re: 912ULS prop strike (Roger Lee) 2. 05:32 PM - Re: 912ULS prop strike (JohnF) 3. 06:17 PM - Re: 912ULS prop strike (Roger Lee) 4. 06:40 PM - Re: Re: 912ULS prop strike (John Fasching) ________________________________ Message 1 _____________________________________ Time: 08:24:13 AM PST US Subject: RotaxEngines-List: Re: 912ULS prop strike From: "Roger Lee" Howdy John, Really sorry to hear about your incident. If it is any consolation at all just think you weren't the first and you won't be the last. It has happened to thousands and will happen again. I had, many years ago, my own little mishap and bent a gear leg on a tail dragger. It is definitely a live and learn world. So with that said onward. Was the prop at idle when it hit or WOT? If you get right on it you may be down for 2 weeks. You need the Rotax Heavy maint. manual and it tells you how to do this. It isn't real hard. More time consuming. Here it is in a nutshell. You need to do a runout check on the prop flange. Pull the prop and you will need to put a dial indicator on the prop flange and check for run out. Then you do need to pull the gearbox and do the inspection listed in the maint. manual on the gearbox. You will be better off sending this in to a Rotax center, like CPS or one of the others. When the gearbox is off you need to do another runout check on the crank shaft with the small gear on it. Again you will need a dial caliper set up to check this. If the crank isn't bent and just to put your mind at ease most aren't then you just have the gearbox tear down and inspection. You might as well replace the Bellville washers in the gearbox since you have it off. They, plus the shims, are responsible for the amount of friction torque that you test during 100 hr or annual inspections. They will have to remove the gearbox shaft bearing and check the shaft runout. They will have to replace the bearing. This process may be around $500-$600, but when you get your gearbox back it will be good as new. p.s. How many hours on the engine? Call Jeremy at CPS 510-357-2403. He can give you a good handle on pricing and times. I hope this helped some. -------- Roger Lee Tucson, Az. Light Sport Repairman - Maintenance Rated Rotax Repair Center 520-574-1080 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=302472#302472 ________________________________ Message 2 _____________________________________ Time: 05:32:11 PM PST US Subject: RotaxEngines-List: Re: 912ULS prop strike From: "JohnF" Time on the engine was zero...brand new unit, run perhaps one half hour doing carb balancing, and general checking. The prop hit at full power. Thanks for the information. JohnF Read this topic online here: http://forums.matronics.com/viewtopic.php?p=302529#302529 ________________________________ Message 3 _____________________________________ Time: 06:17:18 PM PST US Subject: RotaxEngines-List: Re: 912ULS prop strike From: "Roger Lee" Hi John, Was it just the tips of the prop or all the way down to the hub? What type of prop was it? -------- Roger Lee Tucson, Az. Light Sport Repairman - Maintenance Rated Rotax Repair Center 520-574-1080 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=302535#302535 ________________________________ Message 4 _____________________________________ Time: 06:40:46 PM PST US From: "John Fasching" Subject: Re: RotaxEngines-List: Re: 912ULS prop strike Sensenich ground adjustable hollow composite. One blade broke off right at the spinner, and the other one broke off about 10-inches away from the spinner. Some folks searched the accident area...grass along the taxi and runway but found nothing.....either the prop broke into bits or was thrown a long way away, which is what I think. Spinner completely undamaged..not a scratch. Clamping pieces and a cone-shape 'cup' that limits blade rotation when settin the angle were all OK. No external physical damage to any engine component..even the gascolator located at the bottom of the firewall escaped injury..lower cowl is trash as is the nose gear, leg fork to the nose wheel, and the gear leg that broke where it was welded to a piece that allowed bolting it to the underside of the fuselage. Prop replacement is simply a bolting exercise and a dent in the check book. John ----- Original Message ----- From: "Roger Lee" Sent: Friday, June 25, 2010 7:16 PM Subject: RotaxEngines-List: Re: 912ULS prop strike > > Hi John, > > Was it just the tips of the prop or all the way down to the hub? What type > of prop was it? > > -------- > Roger Lee > Tucson, Az. > Light Sport Repairman - Maintenance Rated > Rotax Repair Center > 520-574-1080 > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=302535#302535 > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.