Tim Doran

I have finally got the boat moving. We ended up buying a Hurth gearbox that had been rebuilt to run right handed. For the first time since November we have been able to move under our own power. Thanks for all the help and advice Tim

I dont think that it has been mentioned but maybe you should consider loosening the skin fitting applying silicon sealant and tightening up again. Lovely boat. I didn't sink so get over the blues.

The real problem that we have is that a hydraulic setup will be over budget. Ok, the combination of your posts explains it very nicely. Belts are looking less feasible. So as a rule of thumb how much wrap would I need on a belt? Chains are looking more feasible but I have lots of questions about them with reference to this site as a starting point. How much contact area on a sprocket is it the same as the belt? What type of chain would I need so that the chain would not break? Can I use a single but heftier chain as duplex parts seem more expensive? Anything else I should know about chains. Tim

ah chain I had not thought of that. Might be a winner. Ultimately its not my boat so not my choice

What about a double sided belt such as these? http://www.bearingboys.co.uk/Mower_Belts_Double_Sided-1030-c

I have been thinking about possible solutions that do not involve buying a new gear box. My latest idea would be running the box like a water pump on a car ie on the outside of the belt. I had initially thought this impossible but I did not know that you can get double sided belts. Any thoughts about this idea?

Tried with a crossed belt and got a smoking belt. So that is a no go. Bother this is almost back to the drawing board.

I have taken some photos of the engine but it is really hard due to the tight space. Here is the belts coming off the flywheel Here is the other end. What is here, and what was supposed to be attached here?

Right I think that I should take some photos to give you all some idea of the actual setup. Thanks for all the ideas so far. There is room to tilt the box bit which would stop the belts rubbing. Tim

Is it worth trying a twisted V belt before I go any further or will it not work? I think that it is a lister sr2, I think but dont know but it

Hi Tim thanks for the clarification. Tim

But we could replace the prop to the other direction type. IE left to right

That would be a solution but is it feasible. There is about 2 foot between the engine and gearbox

Bother that is what I thought. I guess that the engine could be rotated but there is bugger all space to do so easily. I have had a look at the 150 and there is mention of gearbox cooling. Would this be necessary? I have that sinking feeling that it is going to be too difficult for us to do.

I don't think that I have explained the problem clearly. The problem is that the gearbox will only accept a left hand input (clock wise I think) and the engine is supplying it with a counter clockwise rotation.