No, it's not a matter of the thrust, I am OK with that. It is just at low speeds the boat doesn't respond to small inputs of throttle. You have to have some water flowing past the rudder and keel. I've got the Yanmar and a Flex-o-fold prop, there is no problem with thrust.
I sympathize with your slippery clutch problem. Years ago, I was racing a Porsche 911 and got a little sponsorship from RedLine Oil. Good stuff, it really helped the engine. But, they gave me some gear oil and it was a disaster. Porsche gearboxes use a friction ring for the synchros. The RedLine was so good that the friction rings would not get the next gear up to speed when shifting. Had to go back to regular gear oil. Gary ----- Original Message ----- From: Michael Brown To: [email protected] Sent: Saturday, January 04, 2014 2:20 PM Subject: Re: Stus-List 30-1 reverse performance The reverse performance on Windburn was fairly bad for the first 30 - 60 seconds. The PO had the gearbox adjusted and was told everything was good, that it was an known issue on Atomic 4s. The fix was switching the engine oil to Castrol 4 stroke motorcycle oil compatible with a wet clutch. After a couple of oil changes forward and reverse work well after about 2 seconds in gear, and after a motor in in forward reverse works well. I dock bow in, and previously giving a quick blast in reverse did little to stop us. The transmission and clutches on the Paragon gearbox are bathed in engine oil. Some of the newer motor oils have friction modifiers added that seem to work very well preventing the clutches from grabbing. I guess after a short period of time the pressure forces the thin film out and the clutch works. The original spec for engine oil did not require the friction modifiers, doubt they even existed, so the Castrol is a good choice. No idea if you have the same issue but I can get up to speed in reverse in about 1 boat length enough to have good steerage. If you are taking a bit of a run at it does it feel like you are not getting solid power for a few seconds? Michael Brown Windburn C&C 30-1 > Another trick I use with the 30-1, (which is really crappy when backing - - - what with the offset prop). My old slip was on a narrow channel and I backed the boat in - start down the channel going backwards - get a little speed up and > drive it like a car, facing backwards. Seems to work pretty well, and can be stopped with a little blast of forward. When I docked before, I would go up the channel, stop and then try to back in - didn't have enough way on to get > effective rudder control. If I back in from a distance, the rudder is already doing its job. ------------------------------------------------------------------------------ _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com [email protected]
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