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rotax 912 exhaust springs


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Guest pelorus32



all I know on the subject is that I found and we replaced a broken spring during a preflight the other day. If I recall correctly the spring had done 400 hours.


It broke where the "apex" of the hook on one end had worn on the anchor point on the exhaust pipe.


I understand that filling them with silicone helps extend their life as it stops them vibrating.







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Guest micgrace



filling the springs (along the side in a couple of "strips" ) with silicone is a common practice used on Rotax 2 strokes where vibration is very high at idle and off. I suppose it's valid for a 912 although I can't recall any recommendation for such apart from safetying.





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