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Showing results for tags 'drive'.
Found 4 results
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Hi, I'm having some issues with my boat. It's a very unusual setting, probably not the best one, but this is how we got it. So the thing is, the gearbox is not inline with the engine and so the power is transimtted with a belt. And on top of the gearbox shaft there was sitting a tube which fell apart. I was talking with one engineer and the only idea he had is to get a splined tube to put on the gearbox shaft and weld it to the shaft coming out of the belt powered wheel. Ok, I know it sounds a bit complicated, but my question is, Does anyone have a used and redundant drive plate for ZF 10 gearbox with 10 splines? They're quite expensive and I only need the middle ring with splines so it's a bit of a shame to buy the whole drive plate. Maybe someone has even a damaged one that I could recycle? Best Marcin
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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'. -
Hi, I have a 1993 narrow boat powered by a Thorneycroft 27HP, have recently been losing power/dropping out of drive and there is a significant and increasing delay when pushing the throttle forward/back before the drive kicks in (with an audible and felt thump!). Can anyone suggest things I can do before I ask for professional advice on this? (Its already cost me a fortune!!). Any thoughts gratefully received, including expected life of engine/clutch/gearbox and likely/best replacement and cost. Thanks - have had a fantastic summer boating by the way (Boat is a home fit out 1993 V hulled 44ft/6'10" on the mon and brec canal and I purchased this year and have had everything on survey completed (hull/electrics/new exhaust/engine bay clean and serviced engine). There is no rev counter so cant say exactly, however a low tickover in forward drive achieves about 1 mph and middle power about 2/3 mph - haven't gone faster than that as the canal is very shallow.)
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When I moved the boat a few days ago, it seemed very slow for the rpm. Infact I stopped and put it into reverse, then forward again and it seemed somewhat better. Made it to the next spot and today checked the weed hatch expecting to find the cause. Clean as a whistle. Whilst the engine is currently overdue its next service, I haven't done that many miles lately. I've checked the gearbox oil, clean as a whistle and filled to the second line (prm150). The only thing I can think of is the bauden cables that control the clutch? Is there a way to check? Or adjustment procedure? Or am I barking up the wrong tree. Another possibly related thing is the amount of water in the bilge these days - usually a good two minutes worth of pump to get it clear and the stern gland drips regulary though I obviously use the grease thing. I did slightly tighten the two nuts but that seemed to make things worse. Two steps forward, one step back.
