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Posts posted by peterboat

  1. 2 hours ago, TheBiscuits said:


    How does that work then?


    Surely leaking Hydrogen is Hydrogen, not Carbon Dioxide!


    14 minutes ago, Jerra said:

    IIRC Hydrogen is H2, my science knowledge isn't good enough so can you please explain where the CO2 comes from.

    It's a greenhouse gas 200 times worse than CO2


  2. 17 minutes ago, magnetman said:

    That's good ! 


    I didn't know they had it certified. 



    Interesting to see the 78% figure. 


    4Kw is quite a lot of heat to be pumping into a small cabin. This will be without the back boiler. 


    It is good to see they have defra approval for this one. I think a smaller one maybe 3Kw would be appropriate. 

    Its easy to upgrade the old ones, baffle plate and a top draft directed down over the glass is all it took

  3. 3 hours ago, magnetman said:

    The one I have was made by someone else with input from me. He did not want to do any more plus it would probably be about a grand retail price so not really going to have much of a market. 


    These days I don't think many fires are going to turn up which are suitable for canal boats in an emissions sense. The market is too small and the cost of getting defra approval is going to be huge. 


    Not worth it, sadly. 


    Another issue is choice supportive bias. I am liable to think it is a whole lot better than it is in reality. 

    Boatman small and Defra approved 

  4. 24 minutes ago, Alan de Enfield said:


    Thanks - I couldn't find it.


    My diving cylinders (both Aluminium & Steel) are filled to either 232 bar (3364psi) or 300 bar (4351psi) so I'd have thought that 5000psi would not be difficult to achieve - Maybe its just the 'corrosive nature' (embrittlement) of Hydrogen on the steel that causes problems - but - it does not have the same effect on Aluminium.


    Hydrogen embrittles a variety of metals including steel, aluminium (at high temperatures only, and titanium. Austempered iron is also susceptible, though austempered steel (and possibly other austempered metals) displays increased resistance to hydrogen embrittlement. NASA has reviewed which metals are susceptible to embrittlement and which only prone to hot hydrogen attack: nickel alloys, austenitic stainless steels, aluminium and alloys, copper (including alloys, e.g. beryllium copper). 


    Ambat, Rajan; Dwarakadasa (February 1996). "Effect of Hydrogen in aluminium and aluminium alloys: A review"

    The 10000 psi is to get a useful amount of hydrogen Alan of course it comes at a cost

  5. 49 minutes ago, Steilsteven said:

    Hydrogen is very expensive and is already available in similar sized bottles but you can only buy it from BOC at just one depot in the whole country.

    If it leaks it releases a lot of co2 to the atmosphere and it's production ( currently ) uses a lot of fossil fuels. 



    Exactly, only I think 3% of hydrogen is made cleanly the rest is from fossil fuels, which is why the fossil fuels companies are pushing it so much! Fortunately failing but not in the EU, they are gullible enough to believe or on the pay packets of fossil fuels companies 

    12 minutes ago, Alan de Enfield said:


    What pressure is the gas in a Calor cylinder ?


    What Ian says its enough to keep it liquid, hydrogen is a different kettle of fish

  6. 12 hours ago, Ronaldo47 said:

    The low density of hydrogen is always going to be a problem due to the greater storage volume required for a given amount of energy compared with other fuels.


    Energy is generally proportional to mass. Hence a bottle of propane contains less energy than the  same-sized bottle of butane, and the same-sized bottle of hydrogen would contain even less energy.  So enough space would be needed to be found for the larger bottles that would be required. I understand from another thread  that Calor's prospective discontinuance of their smaller bottles is already causing some boaters problems.  


    According to "Modern Railways" last year, investigations into the feasibility of using hydrogen-powered trains to replace diesel multiple-units on branch lines have been less than successful. As there is not enough room within the UK loading gauge to fit the large roof tanks that have been used on the continent, most of one coach has to be occupied by the fuel tank. Even then, refuelling almost every day is required, compared with a diesel that only needs to be filled up once a fortnight by taking a trip to a central depot. So local fuel storage for daily refilling would be necessary.  

    The calor bottles wouldn't cope with the pressure of storing hydrogen and of course hydrogen would crack the steel nasty stuff, not to treated lightly 

  7. On 02/02/2023 at 08:38, rusty69 said:

    That's probably what will happen. Boats will be forced to have large numbers painted on the roofs. Great for checking licenses. 


    Parking under trees and bridges will become a fineable offence. 

    Wot paint numbers on my solar panels? How rude

    • Haha 1
  8. 8 hours ago, shaun15124 said:

    the engine we have in this is 


    is 60hp canaline engine and control panel 


     you're not being negative at all your correct we have done a shell which in the few weeks we are going to be re-fixing issue , then fitting out, etc 


    we know we have a long way to go to get this in the water correctly and fitted out 


    I am not being negative, but 60 hp is way to big for this boat! My 57 x 12 had a 50 hp engine which worked fine.

    It now has an electric motor which is lower in power and still works fine. Your boat will only be drawing maybe 10 inches so as others have said a pod Type electric motor could be best?

  9. 1 hour ago, Rod Stewart said:

    Rod here.


    Me and Penny want to do the Lancaster canal in late September but are confused about the Ribble link and in particular Savick brook. Penny assures me it'll be fine, with plenty of water. She tells me the first cut is the deepest, though she does have misgivings about the half tide barrier and stormy waters. 

    Mrs Rod wants to park at Penny Street basin, whilst I am attracted to the Lune aqueduct. All we need is a friend to lend a guiding hand.

    Can you hear me? Can you hear me?


    Anyway, I don't want to talk about it. Thanks for all the help. You're in my heart. X


  10. 1 hour ago, Ken X said:

    With reference to my comment above, I looked at the relative weights of aluminium and HDPE and aluminium is 65% heavier than HDPE. If, therefore, the HDPE was around twice the thickness of aluminium or more, the boat would weigh more than an equivalent sized Sea Otter.  I don't know how the ballast tanks are configured on a Sea Otter but if it works for the aluminium boat there would seem to be potential for water to, as least, partially assist in ballasting this boat.


    A further thought was re. cooling and water ballast.  I understand an electric drive is proposed which needs cooling.  I have no idea how much energy needs to be shed but, if it is not a vast amount, could the cooling radiators be located within the water ballast tanks to protect them from impact damage.  The water would heat up to a degree but if the load is not excessive a balance may be achievable.  Exterior or interior access for maintenance would be required but would not be an insurmountable problem.

    In something light with little draft an air cooled electric motor would work fine

  11. 14 minutes ago, M_JG said:


    General boating seems a reasonable place to me.

    As its news, I thought the news section? I did look in general boating but we either posted together or I just beat him

    37 minutes ago, Arthur Marshall said:

    I stuck it in General Boating. Maybe the mods could merge them into whichever bit thry think most relevant?

    I agree Arthur just merge them into wherever they think right

  12. 10 hours ago, IanD said:

    The reason steel canal boats have to be heavy and low in the water -- if we ignore air draft -- is stability, because they have a heavy steel cabin. Boats built out of aluminium drew less and were still stable because of having a much lighter superstructure, but cost would be a problem nowadays. Maybe HDPE can provide a lower cost solution that's still robust enough?

    When I was first playing with electric in the bathtub it was remarkable how little energy it required to move and stop it, especially in its stripped out state. It had 3 little keels on it so it so it didnt move sideways to much with wind either, so as you say a low cost solution and given it may draw very little it might not suffer the grounding problems I suffered last year?

  13. 1 hour ago, blackrose said:


    I also think abrasion resistance will be a big problem. You've only got to look at the bottom of a used HDPE kayak to see why. Look at all the gouges and scrapes and and then think about how much deeper that damage would be when a boat weighing tens of tonnes scrapes along a lock wall against some uneven concrete or brickwork or protruding steel bolthead on a lock gate.

    I said the same earlier 

  14. Let's be honest our biggest gripe on here is rust, blacking and Painting! This would remove all those! However would a sharp underwater obstacle slice it open? I find it fascinating and little power would be needed to move it.

    Maybe a small keel to keep it going straight and a pod at the rear for steering job done

  15. 6 hours ago, PD1964 said:

    I don’t know if it would be worthwhile doing as we don’t know the OP’s fire make. But may be cheaper then a full Diesel Bubble stove install, especially when installers seem to be fitting twin wall flue’s which all add up.



    I have a bubble stove BB1 backboiler stove going spare for some dosh if anyone wants it?

  16. 1 minute ago, Dave_P said:

    Is this for me?


    I can see the potential but what if I fail to sell enough tickets?


    Those house raffle things work because the companies doing it have a big reach and advertising budget.


    It could be a money-spinner though I suppose?  £2 a ticket maybe?


    I'd like about £45k for my boat so if I sold 23,000 or more tickets, then I'm winning.  Are there 23,000 people who would buy a raffle ticket for a boat?

    I think if you used social media you might have a chance, you could offer the repaint in the winners choice of a range offered by yourself? And maybe  a fiver a ticket?

  17. 51 minutes ago, Alan de Enfield said:


    Say "Hi" to Rob for me.


    He had huge problems when he left Kings Marina and (if the stories are true) almost sunk several times due to hull leaks.

    He went to France in it! He has never mentioned problems with leaks or near sinking, so hopefully it's just rumours? I met them both many times before they came to Tullys to sell it, really nice couple. I suspect that they might have to move back on board shortly if she doesn't sell, as their house is getting sold shortly. 

  18. 18 minutes ago, MtB said:


    The last thing I want when I'm looking over a boat to consider buying it is the owner or a broker at my elbow the whole time prattling away at me.



    2 boats down from me Camelot is for sale, it's a big boat 76 x 16.5 I think? Rob I think is doing what you dont like, Paul from Boatshed leaves the buyers to it but up to press neither method has got a sale

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