Murflynn
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Posts posted by Murflynn
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thank you Nick. it confirms more or less what I thought - a pity the very well-written owner's manual wasn't checked by the technicians in the front line who have to deal with customers.
just for the record, the EProp motors are fantastic and, according to all the reviews, a step ahead of Torqeedo which were the gold standard but are now having to play catch up to match EProp.
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I read everywhere on the web that one of the advantages of lithium batteries is that they do not have a "memory" whilst NiCads do.
I have an EPropulsion 1.0 outboard with a 1.3kwh 40v battery in my boat which is moored at the back of my home. I go for frequent short trips and I used to connect the charger each time I returned, and disconnect it when the indicator light went blue. When I went for a longer trip the battery charging indicator gradually dropped from 95% to 80% and then plummeted to 15%. Soon after the system shut down for "low battery" .
I took the battery to EPropulsion's depot in Hamble and the technician checked it out. All the cells were healthy. He advised me not to charge it each time I use it, but to run it down to about 20% before charging in order to keep the cells in balance. Luckily I have a spare battery so this is manageable. The user manual simply states to avoid overcharging and makes no reference to cycling the battery over a wide range.
Perhaps someone could explain why this situation is not effectively the same thing as a "memory" issue.
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6 minutes ago, Midnight said:
Yes you remember right although many not too long.
Come and try the Calder & Hebble then you will have something to whinge about.
aye, it's allus bigger and better oop north 😉
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what about that awful diamond shaped lock?
............................ and those bloody heavy paddle mechanisms - "Cruise the Avon and have an upper body workout !! "
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mustshould try harder ................
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I blame the First Sea Lord.
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9 hours ago, Bod said:
Can I join your gang please?
Bod
you're welcome
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On 26/08/2022 at 08:31, Tony Brooks said:
The modern assumption that everyone has, wants, or can use a smart phone seems deigned to deny certain sectors of society the use of products or services. My non-smart mobile does not have Bluetooth and is cost so little it is no great drama if dropped in the cut or damaged. It may surprise many people but not everyone can use smartphones unless they are happy for everything they and other say in the vicinity of the phone to be transmitted to Apple/Google for analysis and profit.
you and I have that in common - a reet pair of Luddites innit?
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17 minutes ago, Tony Brooks said:
Because most MPPTs are dual voltage, 12/24. If you disconnect the battery but leave the panels connected the voltage will rise to the panel's open circuit voltage and in some cases that causes them to set to 24 volts.
as I found out to my cost when I had to buy an expensive Victron dongle in order to re-set my MPPT controller.
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55 minutes ago, frangar said:
I wouldn’t want to take one on any sort of slightly bumpy river…..
nor should you - all standard canal boats, narrow and fat, are built to Category D requirements and are limited to relatively calm water conditions.
- Until 2013 a Category D boat "is limited to" rivers, canals and small lakes. (Winds up to Force 4 & waves up to 0.5 metres)
- Since 2013 Category D requirements have been simplified to simply state that the vessel should be designed for Force 4 winds, and waves of up to and including 0.3 metres with occasional waves of 0.5 m maximum height.
In my experience the Humber (for example) will often exceed those conditions.
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12 hours ago, john6767 said:
............................... in the upper Thames there isn’t really a shortage, particularly with the low numbers of boat movements.
really? Come to Abingdon and find out what is really happening .................. only a dribble of water at the weirs and a constant stream of hire and private boats in both directions. Perhaps there is a parallel universe that I'm unfamiliar with ?
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17 hours ago, john6767 said:
So how is this going to work when so few of the locks are actually maned. Presumably they are going to magic up staff to man all the locks, and not allow any user operation, but it is not clear on that.
if they switch off the power most folk will be reluctant to operate the hydraulic pumps by turning the handwheel - once bitten twice shy.
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8 minutes ago, Jen-in-Wellies said:
Though the locks vary in depth, water usage on a flight is largely set by its deepest lock. For the BCN, you'd need to compare the size of the deepest locks in each flight off each of the levels, both now and historically, when there were more flights than now. If it turns out the deepest on each flight is a similar depth, then the concept of locks worth of water available becomes valid. I've no idea if this is actually the case on the BCN. Evaporation and leakage are a constant, or dependent on weather conditions, but every time a boat goes up, or down a flight uses one deepest lock full.
reminds me of the Deep Lock in Bath. each time it is used the upstream lock needs to be emptied a couple of times to keep boats in the short pound from being stranded.
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On 11/08/2022 at 08:25, Bacchus said:
I would say your cross section is about right (slightly narrower and deeper where I am, but 200m2 sounds reasonable), that would give a flow of 5-7.5 cm/s
66 cu.m./second
200sq.m. cross sectional area
flow is 66/200 m/sec or approx 1 ft/second.
5cm is 2"
7.5cm is 3"
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the term "police incident" always makes me smile - it suggests that the police have been misbehaving,
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28 minutes ago, Bacchus said:
The flow at Staines is currently 65.8 cubic metres/second, ................
I am surprised it is as much as that. If the river is 100m wide and 2m deep, that would represent a speed of about 1ft per second. Up here in Abingdon there is no perceptible flow at all. Last winter the maximum flow was about 2ft per second.
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1 hour ago, Jen-in-Wellies said:
A quick look at a map suggests that Hilperton Marina is roughly 40m above sea level. That's much higher than the high seas, so just makes the piracy worse. 😀
groan !!!!!!!!!!!!!!!!
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the late SWMBO used to keep two jars on the hallstand. Any change that might prove useful for slot machines, parking meters, etc. went in one, and periodically taken out and kept in the car ready for use; everything else (up to the value of 10p) in the other. The local charity shop was always happy to take the contents of the second jar.
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21 minutes ago, john.k said:
Its more plastic tat than anything else......once people were happy to have stuff that did things......now they have stuff that does nothing,and chuck it out and replace it every six months....or less.
without it the holy grail known as "GROWTH" would cease to exist, leading to the spivs in the City of London jumping out of their office windows.
now, that would never do.
not only Tory party policies, but the whole of the world economy needs to pause and then re-set. Perhaps it will take a war or a significant climate crisis to kick it off.
................... hang on, we have such an opportunity right now.
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2 hours ago, pete.i said:
It isn't nonsense and we do talk about cold shock and it's consequences.
I have SCUBA dived extensively in Oman and Malta. Even in the wave-disturbed coastal waters there is still a well-defined boundary between the upper levels of water and the lower. It is clearly visible, almost like you would see if you dived into a layer of cooking oil that was floating on water, and It is much colder once you pass through the boundary.
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if DEFRA can feed grey squirrels contraceptives then why can't the Home Office do the same for humans?
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what is a "26 foot boat"?
hopefully not an oil rig lifeboat.
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the concept of a nanny state springs to mind.
it seems to me that skools teach kids that they automatically deserve respect (as opposed to having to earn it as we were tort in the good old days) and foster a sense of entitlement that makes the kids think they are immortal and not vulnerable to the possible dangers out there.
it is not society's responsibility to act as substitute parents when the parents are not fit to own a puppy let alone a child.
....................... right wing reactionary? not really, I just believe in Darwinism.
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16 hours ago, Alan de Enfield said:
You forget that the RCR is the applicable regulation is the UK, and is simply the RCD with a new cover on it.
As I already explained - the latest 2018 RCD/RCR Guidelines (which accompany the RCD / RCR legislation)
It had never occurred to me that River & Canal Rescue were involved.
................................. coat
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Posted · Edited by Murflynn
When I lived in Bristol I found Force 4 was excellent and convenient (located at the Marina) but I understand they have closed that branch what with covid and other things.
make less money? ....... take less money but with minimal overheads it may show bigger profits.