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jim s

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About jim s

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  1. jim s

    She's Back...

    The main thing is to have plenty of memory on your Go Pro...
  2. jim s

    2:1 halyard hardware

    So i've done a couple of sketches and they show in a 1:1 setup with 50 kg (technically should be called 500 newtons) of force holding the sail in position there is 50 kg of "pull" in the halyard going from the sail going up to the sheave and of course the same 50kg pulling down inside the mast - so the sheave is compressing the mast by 100 kg. With a 2:1 set up there is only 25kg of load on the halyard so 25 kg where it terminates above the sheave plus the 25kg going from the sail up to the sheave as well as the 25kg coming down inside the mast giving a total of 75kg now... I'm pretty sure i've got this right , if needed i can get some help and post my sketches. It looks to me that armchairs drinking buddies are onto it
  3. some years back doing industrial maintenance work i noticed the surface finish of the target seemed to affect the reading, and possibly the aiming angle but square on to a uniform machined surface gave consistent and believable results.
  4. jim s

    Shaft Coupling Glue

    Ideally if the shaft and prop bore could be measured then a good plan might be formed, or is the looseness only on the key? . Regardless the grubscrews if they must be kept on should seat in shallow dimples and be loctited (262 or 263)
  5. as a self employed contractor you need to be payed around 30 to 35% more than a wage earner to end up the same at the end of the year (holidays,the odd sick day stats acc levies cost of accountancy etc). There will be a bit of a variation if the wage earner is regularly on penal rates.I have a spreadsheet that shows the costs and comparisons of being self employed (albeit 10 years old) that i can pm to you if you like wheels.There is a lot of bigger picture stuff involved too like whether you are looking at a short or long term prospect and even how much it would cost to get to work, and if you like record keeping and paperwork...
  6. ok gas is arriving at the carb no problem but doesn't get to the float bowl - as IT suggests the issue is related to the float valve... has it run nicely at all since the recent overhaul - if not it might be an assembly issue (i've seen floats installed upside down and the carb apparently went together no problem but the float valve was jammed). let us know what you find.
  7. the biggest clue is very little fuel in the bowl when you undo the drain - i would expect roughly 40 or 50 mils to be in there after its turned off (at least thats about what i get out of my 9.9 yamaha). perhaps try taking the drain out and squeeze the primer a few times to see if you get plenty of fuel getting into the carb -that will tell us where the problem lies
  8. when working the primer bulb i'd expect to see 50 to 100 mils (cc's) of fuel per squeeze , but while cranking it over the little diaphram pump would only put out around 5 mils every two crankshaft revolutions. if its not steadily doing a 5mil squirt on the starter then a likely cause would be a bit of dirt or sleaze on the 2 valves in the pump - a careful clean of the pump could avoid a visit to ebay...
  9. If its been left for a couple of months or more with fuel in the carb (as in not run dry after its last outing) then its common for the fuel to turn into a jelly like substance that is really good at partially blocking the small jets/passages especially in the low speed circuit making the engine prone to conking out at idle or just above.as IT mentioned a careful and decent clean will likely sort it out. good luck.
  10. This is what it should look like if all parts are present...https://www.ebay.com/itm/HONDA-BF100-BF75-BF-100-75-10-7-5-HP-OUTBOARD-BOAT-ENGINE-MOTOR-CARBURETOR-NEW/391542953401?hash=item5b29c755b9:g:c0gA
  11. jim s

    House Battery Issue

    For what its worth we occasionally have a similar thing happen in our off the grid set up of 15 years . typically we run two sets of 4 6v lead acid 220ah batteries in series (24v system) with the two sets paralleled. last summer 3 of the batteries (in one bank) started needing frequent top ups but the system seemed normal in everything else.early one morning before the sun came up i noticed amongst all the 6.2s and 6.3s i had a 5.8v on one battery (less than two years old) - changed it with a new one and all is well again... By any chance Fish have you compared the resting voltage of them? I know you have a couple of guru's onto it but i thought i'd put in 5c worth anyway...
  12. For what its worth i had a frozen shoulder a few years ago following an injury and it barely responded to physio etc but after 18 months or so it slowly came right by itself so lets hope your one follows suit...I'm a real fan of starting the trailer sailer way as fish mentions and certainly you won't get bored with what we have in nz waters. Further to that anytime the pair of you are in the bay of plenty or thereabouts i would be real happy to take you out for a sail for a day or two - pm me if you are keen.
  13. jim s

    Restarting the engine

    I think it would be fine to reinstate and "push the button". it certainly wouldn't hurt to turn the engine a few turns by hand to give the oil pump a head start but not essential. Definitely don't put any oil down the intake though as when that gets drawn into the cylinders the engine will very likely take off and possibly destroy itself. Years ago a friends father got a bulldozer into a very awkward position (more upside down than upright) and while he was standing next to it (still idling) pondering the predicament and how the boss would react it started to run on its own oil then took off and flew to bits...
  14. jim s

    Inaccessible yachts

    About this time last year my elderly sailing mate and i went ashore for a few days while some dodgy weather passed and during that time took a walk around the marina at nelson. As you do got chatting with an old salt who was tinkering with his boat and ended up spending a very enjoyable few hours listening to some pretty neat stories covering all sorts of things from logging and deer culling down the west coast through to sailing on the Nile overloaded with oranges - where else do you bump into people like that?
  15. jim s


    Personally i'd be happy to leave the belt in there for another 5 years/1000 hrs - at this stage its still quite young and very low hrs.
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