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Post by kris on Oct 6, 2020 10:33:29 GMT
Was it a slow day? You had nothing else to do?
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Post by Deleted on Oct 6, 2020 10:34:47 GMT
Yes but the boat was not moving. That is not a true representation of the propellers effectiveness at pushing a boat through water. It is a basic bollard test which is a different thing altogether. The MK prop will obviously have more static thrust than the RC plane prop, apart from anything else depending on which RC prop you use they can bend.
Once the boat is moving the RC plane props are more effective at pushing the boat and will draw less amps for a given speed -through the water-.
This is for long thin light weight boats.
The original trolling motor props are designed for maximum thrust to move heavier boats around and chopping weeds up.
My electric canoe is massively more efficient with a 9x6 aircraft propeller than the original MK weedless wedge prop.
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Post by Deleted on Oct 6, 2020 10:59:42 GMT
At this moment in time, and for the foreseeable future, electric boats are a waste of time. (Fine for leisure purposes, and if you have a mooring). Richard parry has stated many times that crt will not be installing electric charging points along the system.
Given that statement from crt, and the collapse of solar use during our winters, electric boats are nothing but toys. It's all very well pushing and praising such builds, but at the end of the day, if there is no infrastructure to maintain the use, it's dead in the water. CRT will see it as a golden opportunity to rid the canals of ccers, hence the statement on charging points. With hardly any maintenance now being carried out on the system, any reduction in ccers will only speed up the decline of the canals. It will result in having a boating season, whereby for 4-5 months, the system will not be used. The recent covid restrictions proved that non use of the canals for a small amount of time causes maintenance issues.
I know several people with electric boats, thought they could cc and have ended up having to find moorings. The better option in my mind is hybrid, until such time as the required infrastructure is in place.
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Post by Deleted on Oct 6, 2020 11:01:48 GMT
Where did that come from? Presumably that also means no fuel fired heating ie no solid fuel stoves and no diesel or kero systems on inland boats. Brrrr. And no petrol outboards. And no diesel engines. In five years. Hmm. New boats read this Maybe more people should see this - I'm 'pi$$ing in the wind every time I try and talk about the Marine 2050 Plan
By 2025 we expect that:
i. All vessels operating in UK waters are maximising the use of energy efficiency options. All new vessels being ordered for use in UK waters are being designed with zero emission propulsion capability. Zero emission commercial vessels are in operation in UK waters.
ii. The UK is building clean maritime clusters focused on innovation and infrastructure associated with zero emission propulsion technologies, including bunkering of low or zero emission fuel.
By 2035 we expect that:
iii. The UK has built a number of clean maritime clusters. These combine infrastructure and innovation for the use of zero emission propulsion technologies. Low or zero emission marine fuel bunkering options are readily available across the UK.
By 2050 No non-zero emission boats can be used in UK waters (coastal or inland)
At the risk of becoming a pedant myself, is it worth pointing out that 'zero emissions capable' is a long way from 'zero emissions'?
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Post by bodger on Oct 6, 2020 12:29:42 GMT
Yes but the boat was not moving. That is not a true representation of the propellers effectiveness at pushing a boat through water. It is a basic bollard test which is a different thing altogether. you've missed the point - testing a trolling motor in static water gives the static thrust (bollard pull). testing it in moving water (where the motor is creating the movement) is quite different ......... the next best thing to a live test on the boat - the available thrust in moving water is related to the angle of dangle of my pendulum.
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Post by naughtyfox on Oct 6, 2020 12:34:57 GMT
Was it a slow day? You had nothing else to do? I expect there was some 'point' to it.
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Post by naughtyfox on Oct 6, 2020 12:39:49 GMT
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Post by Jim on Oct 6, 2020 12:54:11 GMT
Current post ampered by a lack of spark and positivity.
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Post by Deleted on Oct 6, 2020 13:11:39 GMT
Yes but the boat was not moving. That is not a true representation of the propellers effectiveness at pushing a boat through water. It is a basic bollard test which is a different thing altogether. you've missed the point - testing a trolling motor in static water gives the static thrust (bollard pull). testing it in moving water (where the motor is creating the movement) is quite different ......... the next best thing to a live test on the boat - the available thrust in moving water is related to the angle of dangle of my pendulum.
The point I got was you said the 10x6 plane prop was no good. The truth is that on a moving boat it will behave differently. The fact I didn't read your post is neither here nor there
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Post by Deleted on Oct 6, 2020 13:12:29 GMT
Current post ampered by a lack of spark and positivity. Watt are you on about?
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Post by Jim on Oct 6, 2020 16:01:45 GMT
Current post ampered by a lack of spark and positivity. Watt are you on about? the fox and involtuntary euthanasia. Ohm my god watt am I saying.
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Post by Deleted on Oct 6, 2020 16:26:44 GMT
the fox and involtuntary euthanasia. I think this could lead to some resistance.
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Post by bodger on Oct 6, 2020 16:53:50 GMT
The truth is that on a moving boat it will behave differently. whether the water is moving past the prop (which is stationary), or the boat and thereforo the prop is moving through the water (which is stationary), is not distinguishable as far as the prop is concerned - the moving water test is valid ............................ ..................................... just because I say so !!
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Post by peterboat on Oct 7, 2020 9:09:21 GMT
New boats read this Maybe more people should see this - I'm 'pi$$ing in the wind every time I try and talk about the Marine 2050 Plan
By 2025 we expect that:
i. All vessels operating in UK waters are maximising the use of energy efficiency options. All new vessels being ordered for use in UK waters are being designed with zero emission propulsion capability. Zero emission commercial vessels are in operation in UK waters.
ii. The UK is building clean maritime clusters focused on innovation and infrastructure associated with zero emission propulsion technologies, including bunkering of low or zero emission fuel.
By 2035 we expect that:
iii. The UK has built a number of clean maritime clusters. These combine infrastructure and innovation for the use of zero emission propulsion technologies. Low or zero emission marine fuel bunkering options are readily available across the UK.
By 2050 No non-zero emission boats can be used in UK waters (coastal or inland)
At the risk of becoming a pedant myself, is it worth pointing out that 'zero emissions capable' is a long way from 'zero emissions'? My original post was 9 out of 10 orders with Finesse were for full electric boats so clearly buyers think different to you? like myself they will have large solar arrays meaning in the winter they will be self sufficient in electric. By using 48 volts they have the option to have all solar for drive use a 48 volt inverter and have a 48 to 12 volt charger for leisure use keeping the system simple. I did not o this way as I purchased 36 volt batteries cheaply allowing ny system to run at 72 volts and effectively
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Post by duncan on Oct 7, 2020 9:40:41 GMT
At the risk of becoming a pedant myself, is it worth pointing out that 'zero emissions capable' is a long way from 'zero emissions'? My original post was 9 out of 10 orders with Finesse were for full electric boats so clearly buyers think different to you? like myself they will have large solar arrays meaning in the winter they will be self sufficient in electric. By using 48 volts they have the option to have all solar for drive use a 48 volt inverter and have a 48 to 12 volt charger for leisure use keeping the system simple. I did not o this way as I purchased 36 volt batteries cheaply allowing ny system to run at 72 volts and effectively To tie in with bedruthan's post about lack of charging infrastructures, how long can you cruise for on a cloudy day, and how long will it take for the batteries to recharge on solar only, which of course could only happen during daylight?
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