magnetman

There are a number of small scale and interesting moveable bridges at Canary wharf. Of particular interest are the bridges over the access waterway behind the Waitrose store. Several different ways to solve the problem. Lifting and swinging types. These bridges are moveable to allow access to West India Quay. All of these bridges are moveable. There are others elsewhere on the estate including one I can not work out. Maybe a horizontal lift. All interesting anyway.

It could also be related to available technology and materials when the canal was constructed. Of course part of the reason for narrow canals was low construction costs so maybe a simple lift bridge was the cheapest way to accommodate land owners without putting in fixed bridges.

I got the impression @blackrose did not particularly like it when his Hankook battery exploded and sprayed acid around. I still think the battery may have been from a faulty batch but whatever the situation it is not a pleasing outcome and is understandable that one would seek to avoid a repeat.

A vertical lifting bridge means full width headroom. I seem to recall that someone was badly injured or possibly killed at Aldermaston lift bridge on the K&A. If there is a choice fo do either there could be an elfin safety argument in favour of a vertical lift in terms of safety of people using the waterway. I remember a vertical lift bridge in Paris which was impressive on hydraulics but I suppose it is a lot of additional equipment compared with a bascule or swing bridge. I wonder if anyone ever made a folding bridge where the deck lowers down into the water rather than lifting above.

Excel is a petcoke type as well. I have never used it but it does seem very popular.

Fuel name Newheat briquettes Manufacturer Oxbow Coal B.V. at Newfield works, Bishop Auckland, County Durham (a) comprise petroleum coke (as to approximately 60 to 65% of the total weight) and anthracite (as to approximately 30 to 35% of the total weight) together with a cold setting resin binder, hardener and low temperature stabiliser (as to the remaining weight) https://smokecontrol.defra.gov.uk/fuels/newheat-briquettes-52/

2.25m length 2.54mm internal rod diameter. 2.75m length 3.65mm is how I would interpret the numbers. The longer and larger cable presumably being connected to the gearbox.

I have not read the whole thread but find it slightly odd. "C8 M 2.25 254 and C8 M 2.75 365 cables that I'm looking for spares for. I've roughly measured the gearbox cable at 2.17m (not easy because of it's routing) so I'm also thinking that 2.25 and 2.75 are the cable lengths in metres." It appears to be rather obvious.

I think LFP is likely to remain the most used product for consumers for a while because of the price. LTO seems to be more useful for commercial operations where the fast charge is important and the high cycle life makes it more attractive during the lifetime of the piece of equipment using the batteries. Damen use LTO in their ship handling tugs but these are high demand applications with a lot of charge discharge cycles. Rapid advances nobody really knows what is going to happen with battery technology. it might be me who recognises how reality works where you don't. Stranger things have happened.

LTO is the answer but is rare to find them at a sensible price.

Its brilliant the way batteries always get people arguing in good faith. I remember @gibbo and @chris w years ago arguing about lead acid batteries and the Peukert factor. Always good to get different views on these things and promote discussion . It has a way of bringing out knowledge which people would have otherwise kept close to their chests.

I do not inhabit this world at all. Never been there. I can however understand why a LFP battery supplier may wish to give the impression that the batteries are a straight swap for lead acid batteries. It is not about lies or conspiracy it is just about presenting a product to the market. There was a time when the term 'drop in replacement' was used for these products but that seems to have become less common as a marketing line. Why do you think recognising how reality works means someone is living in a world full of lies and conspiracies? As for ulterior motives the profit driver is known to cause this problem its normal.

Choice supportive bias. Post purchase rationalisation. Very powerful cognitive effects going on here. This is why you will find lots of people singing the praises of BIY lithium installs but not so many telling how it went badly wrong and they lost loads of cash, lost the use of a hand and almost got killed.

It seems to me to be more of a power issue than a current issue

I think some people might believe that 'charge' is something you can do all the time without getting problems. If you put one of these batteries on a CV type charger which has an output of 14.4V it is going to hold the voltage at that level. This is known to cause damage due to the knees on LFP cell charge voltage curves and the way that the chemistry works.

A useable MPPT controller can be set to never overcharge a LFP battery unless the unit fails entirely. If that happens then it all goes horribly wrong and everyone dies in a terribly nasty way. But generally speaking it is okay. Victron innit. Do not be confused by 'Bluesolar' which has no Bluetooth and 'Smartsolar' which does have Bluetooth. All the units are blue and none of them have teeth. Peolle who do BIY installs of LFP are faking enormous risks. This is why I did a BIY system using the safest Lithium chemistry in the known world. Lithium Titanate. Also rather cleverly named after a very cool intercontinental steam passenger liner. Yes if you have a BMS. The content immediately before mine implied potentially leaving cells to go out of balance. As for the 14.4V and 5 percent thing do you think that the nan on the Clapham Omnibus who also wants a lithium battery for her modest but hard won Boat is going to be monitoring the charge current?

It is partly a way for microchip makers to sell more microchips. But to be fair if a cell does go down too much the other cells will take the charge and it is possible for this to end with negative consequences.

If the pot has split it was just a matter of time. Back in the day these were a maintenance item I found loads of worn pots in the GU near locks and one or two which had split apart. If they are not replaced on routine maintenance then they eventually break apart. Its obvious. It might not be that and the video is not that clear but the CRT geyser seems to be holding something.

I know what voltage is required but Fogstar say 'recommended charge voltage 14.4V'. This is too high but aligns with the figure average people probably have in their heads for alternator charging of lead acid batteries. So it is a marketing strategy. Sell people batteries which will 'directly replace' the existing lead acids. Sell more products. I suppose the number of people who take it literally and wreck the batteries is smaller than the number of extra units shifted from the warehouse so it is worthwhile. Also if you sell a battery with 300Ah of capacity it would be a bit naff to immediately tell people to only use 60 percent of the capacity as it then becomes a 180Ah battery.

All the water needs to be evacuated and a new pot leaded in or however they do it these days.

That is too sensible. Of course as it seems to be a tail gate the lift will not be assisted by water. A jack and spreader plate under the balance beam close to the collar could work but the beam might be rotten and snap off. is he holding a split open pot ? If the pot has broken apart then its a bit more than just putting the gate pintle back in.

Fogstar say at the point of sale that the recommended charge voltage is 14.4V so presumably they last for the warranty period when kept at this voltage. The average consumer is not going to be concerned with bulk and float they just want to charge and discharge batteries. I realise this is part of the marketing but if someone did leave one of these on a CV charge of 14.4V and it failed in a few years how would Fogstar be able to get out of the warranty claim? The recommendation is there at the POS and not everyone is going to RTFM .

More single people

Not very practical if you miss the locking in window. I have twice arrived too late and used the outer pontoon. IT Was very rough once the tide started coming in again !!

Yes I think the ribs were using it I have seen it before and since the lock office and related CCTV system is now the marina office and nothing to do with the lock it is awkward to police that area. Thats probably why it has been removed. About ten years ago I recall someone putting a Boat there then left. The CRT called out a contract tug which towed it away as per the signage. Boats not to be left unattended. Actually that was more like 15 years ago and could have been BW. I think the reason for not leaving unattended vessels there is the ropes may break then it ends up floating about in a navigation channel with high speed vessel operations. Could be a PLA thing.