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stuart

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Posts posted by stuart

  1. Has anyone else noticed that a transport company in Oldbury (West Mids) has infilled an arm/basin on the BCN old main line?

     

    Map Linky

     

    If you look at the map link above, the 4 boats in red and the large shed are now gone, along with the water, which has had several hundred tons of hardcore dumped into it!

     

     

    How have they managed to get away with this ?

     

     

    (The area is next to the A&D aquatics store if anyone is familar with the area)

  2. If the gearbox was swapped, I bet it was a simple as the old box was a 2:1 and the new one is 3:1, so the prop's not turning as fast as it once was.

     

    Additionally, are you sure the prop is not slipping in the gearbox coupling - or the gearbox itself isn't slipping ?

  3. I'm impressed, you've sorted out all the technical support issues by yourselves!

     

    Glad your getting on fine with it - the next version is a major re-write (which is why theres not been many updates lately).

     

     

    Don't forget that the realtime web-update data is lost as soon as you stop - if you want to record the journey, click YES on the "Upload Journey" question when you click "Stop" at the end of the day.

     

     

    The software takes a snapshot every 3 minutes (hard coded at the moment) and tries to upload these every 10-20 minutes dependant upon you having an internet 3g signal. If theres no signal, it will buffer up the positions until a 3g signal becomes available.

     

    The settings pages are greyed out when you are recording a journey, so only change these when you stop.

     

     

     

    Cutting corners is not allowed on the canal, stick to the racing line :-)

  4. How rigid is the flue pipe fixed to the stove and the roof liner/hole ?

     

    The flue pipe could have expanded/contracted and lifted the stove up if the pipe is fixed rigidly to the roof for instance.

     

     

    Does the stove look alright? No warped or distorted sides - are the firebricks still there / not cracked ?

  5. Can anyone explain away this voodoo?

     

    Theres not many people who fully understand Batt's and their charging !

     

     

    Think the best advise you've had so far is...

    1. Replace your alternator with a cheap A127 model - look on ebay, should be easy enough to swap over if your okay with a spanner.

     

    2. Make sure you charge your batterys longer - several hours at a time, go for a cruise.

     

    3. Don't get to paranoid over voltage readings, they are not the whole story - don't forget that batterys are disposable/replaceable items (although expensive!) and they do die !

  6. It does matter, actually.

     

    Most people (not all, I admit) would like more, and the vast majority of us, if offered a doubling of our salary with no strings, would say "yes please".

     

    That has to beg the question "is that amount obscene only because it is more than you get"

     

    As a suplementary question, what is the upper limit of what is not obscene for any job?

     

     

    I've no problem with people earning/taking a high salary but only if its justified and the relevant stakeholders have agreed/voted for.

  7. You could always try this site...

     

    http://www.vicprop.com/displacement_size.php

     

    Gives...

     

    Data Input

    Waterline length in feet: 48 feet

    Beam at the waterline in feet: 7 feet

    Hull draft in feet (excluding keel): 2.5 feet

    Vessel weight in pounds: 35000 lbs

    Engine Horsepower: 35 HP

    Number of engines: 1

    Total Engine Horsepower: 35 HP

     

    Engine R.P.M. (max): 2500 RPM

    Gear Ratio: 2:1

    Shaft R.P.M. (max): 1250 RPM

     

    Number of shaft bearings (per shaft): 1

    Desired speed in Knots: 3 knots

     

    Horsepower Calculations

    This will calculate the maximum horsepower and torque available at the prop(s).

     

    Total available horsepower at the engine(s): 35 HP

    Total available torque ft/lbs at the engine(s): 74 ft/lbs

    Horsepower loss of 3% per gearbox: - 1.1 HP

    Horsepower loss of 1.5% per shaft bearing: - 0.5 HP

     

    Total horsepower available at the propeller(s): 33.4 HP

    Total torque ft/lbs available at the propeller(s): 140 ft/lbs

     

    Speed & Power Calculations

    Basic displacement speed and horsepower required

    Displacement hull speed (1.34 X sqrt of waterline length): 9.28 Knots

    Minimum horsepower required at propeller(s) for Hull speed: 69.4 HP

     

    Calculations based on desired speed and available HP

    HP required at propeller(s) for desired 3 knots speed: 2 HP

    Estimated speed with existing 35 horsepower:

    This is the speed we will use for the propeller size. 7.24 Knots

     

    At this point it is important to note that all of the calculations above are based on full RPM and HP. Most engines are rated to run at a percentage of thier full RPM. This is what will determine your maximum cruising speed. The propeller sizing calculations below are based on 90% of full RPM, which allows the engine to develop it's maximum power without overloading. The chart below shows typical engine ratings, you can find this information in your engine specifications.

     

    Propeller Size

    Number of blades Diameter (inches) Pitch (inches)

    2 Blade 18.6 X 11.2

    3 Blade 17.7 X 11.0

    4 Blade 16.6 X 10.8

     

    The propeller sizes shown above do not contain calculations for cavitation or blade loading.

    If you find that the recommended propeller is too large to fit your vessel, you can try increasing the shaft speed. Failing this, you can reduce the diameter and increase the pitch at the expense of your propeller efficiency. The rule of thumb is 1 inch of diameter is equal to 1 1/2 to 2 inches of pitch.

  8. Have you actually clicked on and looked at the images posted, though ?

     

    There is little doubt in my mind that these should be failures, and any previous BSS should not have passed them...

     

    How could you possibly say this pipe is supported.....

     

    SDC15843.jpg

     

    Failing that is not a BSS inspector being picky - it is him doing the job you are paying for!

     

    EDITED: For finger troubles.

     

     

    Agreed, although do also agree with the comments about attaching a piece of wood behind these pipes with glue rather than welding supports in place.

     

    At most an hours work!

  9. £6/- per passenger + the boat length in metres x £25/- plus the normal craft licence.

     

    So for a 57ft boat, with 2 berths and gold licence

     

    (2 x 6 + 17.5 )x 25 = £737.50 plus £987

     

    £1724.50 per year (approx!)

     

    Plus insurance and the more stringent BSS.

  10. By the way, is there any disadvantage to having a lever valve instead of a gate valve? Just thinking of changing mine for ease of use as I will be closing and opening it everyday when I go to work and come home.

     

    Think there was a post on this recently, if you replace, just make sure you use a full bore lever valve otherwise the water flow will be restricted. Much easier to turn off though, just a quarter turn rather than 10+ turns on the gate valve wheel.

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