Merry x-mas and Happy New Year everyone. I am repowering with all new from the prop to the engine. I have been busy in the engine compartment cleaning, and now rebuilding them for the new engine mtr mount dimensions.I am aware of the importance of the engine to shaft,log alignment. To me this is the hardest part of the whole deal. I think I have it under control, however I keep seeing threads here saying there is a huge difference between on the hard and in the water.I can see how there could be a little flex, however I have an older 1977 Jeanneau 38 with a 1" thick hull. How much of an issue will this be? Red
you need to set it up accurately on the hard and then do it again one she is afloat ,you will also have to check regurlarily for the ist month or so of use as it all beds in. If I was redoing the whole drive system I would consider using a flexible coupling system similar to the AQUADRIVE .this allows for considerable missalignment and also reduces the amount of engine vibration transmitted to the hull .there are pictures etc of this unit on tnorrismarine.co.uk. good luck Keith
On the hard and in water makes some difference. There will be some flex due to the conditions. Another important point to note is the rig. The cables are pullling different ends of the boat and the möast pushing the bottom. This causes a lot of deformation specially in the water.
Thanks Guys, I appreciate the tips, I agree on the flex coupling, I am using a Kubota Beta 35 HP, and it comes with a trans and a flexible coupling.I kinda figured there was some flexing, as I noticed while on the jacks, my sliding hatch cover is really stiff and hard to open and close, in the water it slides a lot easier. Thanks Red
Connect with Facebook
engine shaft brg aligment ?
