Poor manufacture quality
in 912 / 914 Technical Questions
13 years ago
I have 912ULS which has had a vibration since new. This has broken engine mounting bolts, cooler brackets, warp drive blade at the hub and so on. When in desperation i had the engine dissassembled at 200 hours, it was discovered that the following were faulty: 1) Camshaft wearing due to improper manufacture 2) Crank web not aligned 3)Main gearbox bearing shot - axial and lateral play 4) Soft valves. And this is an effectively new engine. My research indicates that Rotax has since changed the suppliers of a number of these parts, but have not advised clients. Additionally there is emerging comments on porous heads and other problems. I am waiting to see if Rotax will cover the costs of the labour but they seem resistant - they have replaced the parts at this stage. A friend of mine had so many problems the factory replaced the entire engine - I would be interested to know if anyone else has had manufacturing issues on these motors and the outcome visa vis the factory. :angry:
I bought Rotax thinking it was the best possible engine,as I have small children and dont want to give up flying, but am now converting to a BMW motor- 120hp at 9l/hour burn, fuel injected in the hope I can fly more that scratch my head over the next problem. :)
I bought Rotax thinking it was the best possible engine,as I have small children and dont want to give up flying, but am now converting to a BMW motor- 120hp at 9l/hour burn, fuel injected in the hope I can fly more that scratch my head over the next problem. :)
