Steve Innova Posted May 20, 2008 Share Posted May 20, 2008 All, I have a set of damaged Infinity Retracts for sale. Presently, the gear IS NOT in flight-worthy condition. I purchased this set about 6 months ago, with the intention of studying the gear design and possibly repairing or remanufacturing the gear. However, I just got a brand-new set of Infinity Retracts, so I won’t be needing these any more. A little about the gear: This came from Bill Oertel aircraft which crash-landed last year. The gear was damaged in the crash. Here is a basic summary of significant damage: - Main Strut tubes slightly bent - Wheel half-forks broken off - Attach plate twisted - Sizzor arms bent slightly - Internal oleo sliding/locking tubes slightly bent - Hydraulic actuators damaged Possibilities for Repair/Remanufacture: I've completely dissembled and inspected the gear, and was confident that I could re-manufacture all the damaged components. Despite what a lot of people say online, the basic design is not especially complex, and an accomplished machinist should certainly be able to re-manufacture the parts. The most expensive part of the gear is the Trunion Heads (the part that the gear rotates on to retract). From my initial inspection, these appear to be undamaged, though I make no claims as to their flight-worthiness. They have broken free from the attach plate (this was glued on, not welded, which probably prevented them from being excessively damaged) You would of course need to inspect them closely w/UV or other techniques to examine for microscopic cracks before deciding whether to remanufacture or reuse the part. Most other parts are basically a series of nesting AL and steel tubes, turned on a lathe to correct diameter and o-ring quality surface, with groves for locking rings and o-rings. Milling would be required to build some replacement parts, such as the scissor arms, internal locking mechanism, half-forks, and attach plate, but most parts would be made on a lathe. I had planned to use the original damaged parts as templates, take exact measurements, and make new parts to spec. I don’t have an estimate of what it would cost to re-manufacture the damaged parts. Depending on your skill and tools, you could probably make some of the parts yourself, and farm out others. You might even be able to order some parts direct from JD, depending on whether he has any of the parts in stock. However, considering the wait for new Infinity Retracts can be 4 years or more, this might be a good option for getting the gear sooner, and would be an interesting project. I originally purchased these as an insurance policy, in case I was never able to get a new set of Infinity gear. Best offer gets the gear. Send me an IM and I'll send you some pics of the dissassembled parts. Lastly, I’ll state again: This gear is sold “as is” in a damaged, non-flight worthy condition. Quote Link to comment Share on other sites More sharing options...
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