Search the Community
Showing results for tags 'shaft'.
Found 3 results
-
How many of you are using vetus bullflex couplings? What kind of experiences with those? What bullflex model and what kind of engine and propeller shaft setups? How many hours you have used it?
-
Hello I have a beta 43hp 2800rpm engine and a prm 150 1:2.09 gearbox on my tresfjord 26 boat the propeller shaft is 35mm and 1.8 meters long. Weights aprox 13,59kg propeller is a 17x14 3-blade weight 7.7kg Im now fitting a vetus flexible coupling Bullflex type 8, it weights 11.9kg A smaller Bullflex type 4 that weight 6.9kg would otherwise be good for my aplication but there is no model for a 35mm shaft My consern is that is there too much combined weight on propeller shaft for prm 150 gearbox to handle, will it wear out faster? Is bullflex coupling going to take care of exrta weight By flexing when engaging a gear? shaft, coupling and propeller weight combined is 32.2kg Best regards Henri
-
Dear all, I have a beta marine 38, with a PRM delta gearbox (no input shaft spline wear) driven by an R & D 'extra dampening' drive plate. Coupled via a double-cardan/constant velocity joint (from a london taxi propshaft), through a plumber's block to the stern bearing. When engaged in gear, at tick-over (wound down to 550rpm), there is a distinct 'clonk-clonk-clonk' coming from the region of the gearbox. At higher engine speeds, this noise seems to go away, although that could just be the engine drowning it out. The shaft/cv join moves freely (with the force expected to drive a prop in water) by hand in both directions. The engine is angled down slightly on its mounts (adjustable screw-nut ones) so that the double-cardan input is slightly off-set. My question is - should I worry about this? I have no nylon coupling between the gearbox and the prop/cv-join input shaft, so is this likely to just be 'clonky plumbers block'? Should I raise the tick-over? It was wound down when the engine control lever insisted on increasing the rpm prior to engaging gear - there is now a correct control lever. I think the rated tickover is 750rpm. I will increase it. Many thanks, Patrick Vale (cross-posted to http://www.waterwaysworld.com/questions.cgi) Which seems to have replaced the title - should read 'Drive train clonking in gear'.
