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#11
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![]() "trainfan1" wrote in message news ![]() I don't know if I would call either one "rare", the right-hand-propped inboard, which is quite common, requires a reverse-rotation (ccw) engine, and the left-hand-propped inboards are a little more straight-forward to do an automotive conversion job (still have to have corrosion issues and spark ignition issues, & carb venting & construction, all addressed). When looking at rebuilds or new blocks, there is a $100.00 to $250.00 premium on the ccw engines. Most stern drives have a standard, cw rotation engine. Rob In our ski club, we have many Malibu's, Master Crafts, Correct Crafts, Tiges, and Moombas...all are cw. The only exception, is one old Natique...driver sits on the left side. I don't know of any modern ski boat manufactures, that put ccw engines in their hulls. The premium for ccw engines, is for the reverse cam and oil pump. And outside of the (pointed) distributor, and flipping the body on the pick-up pump, everything else will work. You say "most stern drives" are cw...I have never even seen one...did some one make one at some point? Later. -- -Netsock "It's just about going fast...that's all..." http://home.columbus.rr.com/ckg/ |
#12
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Netsock wrote:
"trainfan1" wrote in message news ![]() I don't know if I would call either one "rare", the right-hand-propped inboard, which is quite common, requires a reverse-rotation (ccw) engine, and the left-hand-propped inboards are a little more straight-forward to do an automotive conversion job (still have to have corrosion issues and spark ignition issues, & carb venting & construction, all addressed). When looking at rebuilds or new blocks, there is a $100.00 to $250.00 premium on the ccw engines. Most stern drives have a standard, cw rotation engine. Rob In our ski club, we have many Malibu's, Master Crafts, Correct Crafts, Tiges, and Moombas...all are cw. The only exception, is one old Natique...driver sits on the left side. I don't know of any modern ski boat manufactures, that put ccw engines in their hulls. The premium for ccw engines, is for the reverse cam and oil pump. And outside of the (pointed) distributor, and flipping the body on the pick-up pump, everything else will work. You say "most stern drives" are cw...I have never even seen one...did some one make one at some point? Later. Correct Craft uses a ccw(reverse) engine, right hand prop(driver on the right... "Correct"). MasterCraft uses a cw engine, left hand prop(SHOULD have driver on the left)... take a look. All standard Volvos, & Mercruisers, Alpha & Bravo types, use a cw (standard) rotation engine. The upper gearcase gives a right-hand twist to the vertical shaft (Alpha types - viewed from above), resulting in the forward gear in the foot providing a cw(right hand - viewed from rear) twist for right hand props in forward gear(back gear in foot provides reverse). Cone-clutched I/O's (Bravo & Volvo types)can have Left or Right Props - the vertical shaft changes L-to-R for reversing. Rob |
#13
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![]() "trainfan1" wrote in message ... Correct Craft uses a ccw(reverse) engine, right hand prop(driver on the right... "Correct"). MasterCraft uses a cw engine, left hand prop(SHOULD have driver on the left)... take a look. Inboard cw engines "pitch" to the right when in reverse...the driver SHOULD be on the right, to accommodate docking and other slow moving maneuvers. If Correct Craft puts a ccw engine in, and puts the driver on the right...well...that's just ignorant. Anyway...thanks for the info. -- -Netsock "It's just about going fast...that's all..." http://home.columbus.rr.com/ckg/ |
#14
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![]() "trainfan1" wrote in message ... Cone-clutched I/O's (Bravo & Volvo types)can have Left or Right Props - the vertical shaft changes L-to-R for reversing. Rob I know they *can* make them spin right-hand, as most dual drives are counter-rotating. My query was there ever any i/o manufacture that used ccw engines. Of course, I probably wasn't clear to begin with... ![]() Later. -- -Netsock "It's just about going fast...that's all..." http://home.columbus.rr.com/ckg/ |
#15
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Netsock wrote:
"trainfan1" wrote in message ... Cone-clutched I/O's (Bravo & Volvo types)can have Left or Right Props - the vertical shaft changes L-to-R for reversing. Rob I know they *can* make them spin right-hand, as most dual drives are counter-rotating. My query was there ever any i/o manufacture that used ccw engines. Of course, I probably wasn't clear to begin with... ![]() Later. Here is your confusion... cw (clockwise) IS right-hand rotation - OF THE ENGINE... as observed from the water pump and pulleys end - as intalled in the family car or truck... this results in a left, or Left-hand turning prop in a straight inboard as viewed from the flywheel end. This is the MasterCraft and Mercruiser engine layout. This will result in the driver being on the "incorrect" side of a straight or v-drive inboard based on propellor thrust, which would cause the boat to twist opposite the prop, or clockwise looking at the transom, and adding to the driver's weight for a list to starboard. In my time in the ProStar though, I never really noticed it, except backing must be done on the opposite side from our Correct Craft. In reverse, the transom walks right on the MasterCraft, left on the Correct Craft and Century (Coronado). Spin-outs have to be done in the opposite direction, too. Rob |
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