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Post by bodger on May 25, 2021 16:55:12 GMT
I like the fact Epropulsion have floating batteries. Good idea. Another approach might be to have a pair of smaller motors. Minn Kota did a dual motor mounting bracket which was quite interesting. It would probably be feasible to put two electric pods on the boat and leave the 4 stroke outboard in place. That would be nice ! Would involve some hull modifications though which I don't think the OP wanted.
exactly what I had last year. MK40 in the middle, with MK32 on one side and Johnson 2-stroke 2hp on the other. Never tried running more than one motor at a time though.
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Post by bodger on May 25, 2021 16:58:13 GMT
Looking a the photo of the Drascombe I reckon the approach I used on the febdp would work. Minn Kota outboard(s) top chopped off and shaft mounted using a Stauff clamp which bolts to a stainless steel hinge. the hinge can then be bolted to any suitable surface. piece of rubber as a thrust bearing. Simple no-nonsense low profile option for mounting trolling motors without buggering the boat up. I'll put a picture up later. It was a bodge but remarkably effective and allows easy stowage. Looking at the slope of the wooden board I think something very nice could be done there with a pair of trolling motors which slide up out of water when not in use.
I have 2 MKs and cut the shaft length down to about 20" in both cases. Removed the integral motor controller on the 32lb but retained the casing and the tiller for convenience.
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Post by paulhd on May 25, 2021 17:27:42 GMT
there are several UK dealers, some say stock is arriving in July, others say September. I wonder why there is such a shortage? I think a couple of places may have the old model in stock with the smaller battery. I don't think I need the very latest Evo with the regenerative charging although the price difference is not massive. Lets hope they are in the country soon. Hey Andrew. If I can't get a eprop maybe I could meet up with you and get one of your contraptions fitted, but no holes to be drilled.😄
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Post by Deleted on May 25, 2021 18:06:56 GMT
Good luck with it but if it were my tidy pile of cash I'd buy a Japanese 4-stroke. However something with a remote battery would be good for weight distribution. He already has a Japanese 4 stroke Tohatsu. Yamaha and Honda might be better but not much quieter. for that you need a twin and it's going to be much much heavier. The Epropulsion is the right approach I reckon. If it can maintain maximum hull speed against a 5-knot current for two hours then I suppose you are right.
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GRP boat.
May 25, 2021 19:10:08 GMT
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Post by Deleted on May 25, 2021 19:10:08 GMT
He already has a Japanese 4 stroke Tohatsu. Yamaha and Honda might be better but not much quieter. for that you need a twin and it's going to be much much heavier. The Epropulsion is the right approach I reckon. If it can maintain maximum hull speed against a 5-knot current for two hours then I suppose you are right. Paul had been discussing using it as an alternative to the petrol engine. so I assume that when there is a strong tide one would go for the petrol as it "gets the job done" but when idling in less arduous conditions the electric would be the thing. It is quite a heavy boat though to be fair !
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Post by paulhd on May 25, 2021 22:02:31 GMT
If it can maintain maximum hull speed against a 5-knot current for two hours then I suppose you are right. Not sure why I would be beating against a 5 knot current on the Thames. As Andrew has pointed out, this is just an alternative to have some nice quiet cruising on the Thames. The Mariner will not leave the boat, it will be stored in the cabin just in case. I can also use the boat at places like Rutland water that do not allow petrol. If I turn up there and no wind, at least I can potter about under power, I suppose I could use my oars. The motor I am interested in is only equivalent to a 3HP. I do not expect it to get me speeding tickets, I just want silence at 2knots😃⛵️
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Post by Deleted on May 25, 2021 22:12:21 GMT
there are several UK dealers, some say stock is arriving in July, others say September. I wonder why there is such a shortage? I think a couple of places may have the old model in stock with the smaller battery. I don't think I need the very latest Evo with the regenerative charging although the price difference is not massive. Lets hope they are in the country soon. Hey Andrew. If I can't get a eprop maybe I could meet up with you and get one of your contraptions fitted, but no holes to be drilled.😄 The way I was thinking of doing it would involve 4 small holes in that wooden board where the sculling oar rowlock is already fitted. It would need looking at more closely but the point is that if done right you could have a pair of electric drives and leave the outboard where it is. Pushing the boat along at 2 or 3 knots means the outboard leg doesn't make a lot of difference to the drag. Certainly not on a boat that heavy. Might make a tiny difference but really not much. It would be quite easy to do it and if it worked right it could be really cool. The way I would do it would just be a pair of cheap trolling motors suitably mounted and on/off switches for both of them. This takes out the speed controller problem. Use the main outboard for close quarter maneouvering. I assume the boat has a rudder, being a sailing boat, so the trolling motors would not need to be steered. You could motor away from the slip using the outboard then switch on the trolling motors, kill the outboard and steer with the rudder. You could probably steer with the outboard if it had something like an addarudder on it but there must be a rudder on the boat anyway. This would give enough control for doing the boating thing I feel. And a pair of AGM stop-start car batteries one for each motor. Sorted.
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GRP boat.
May 25, 2021 22:17:57 GMT
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Post by Deleted on May 25, 2021 22:17:57 GMT
That wooden board. Can't see what is behind that so not totally sure that is the back of the boat..
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Post by bodger on May 26, 2021 6:11:13 GMT
that varnished board is the forward leaning upper part of the transom.
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Post by bodger on May 26, 2021 6:14:11 GMT
If it can maintain maximum hull speed against a 5-knot current for two hours then I suppose you are right. Not sure why I would be beating against a 5 knot current on the Thames. that's why:
when punching up Henley Reach against wind and current really takes some effort for a marginally powered boat, in fact I have sat still at full power for minutes at a time, taking as long as 3 hrs from Hambleden to Marsh
My boat is very similar to your Drascombe - length, weight, slim efficient hull, etc.
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Post by paulhd on May 26, 2021 6:46:36 GMT
Not sure why I would be beating against a 5 knot current on the Thames. that's why:
when punching up Henley Reach against wind and current really takes some effort for a marginally powered boat, in fact I have sat still at full power for minutes at a time, taking as long as 3 hrs from Hambleden to Marsh
My boat is very similar to your Drascombe - length, weight, slim efficient hull, etc.
Hi Bodger, Sorry, I didn't explain myself very clearly. I wasn't meaning that there isn't 5 knot currents, I meant that I wouldn't be going against a 5 knot current as I would not go out in those conditions.
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Post by paulhd on May 26, 2021 6:52:14 GMT
I wonder why there is such a shortage? I think a couple of places may have the old model in stock with the smaller battery. I don't think I need the very latest Evo with the regenerative charging although the price difference is not massive. Lets hope they are in the country soon. Hey Andrew. If I can't get a eprop maybe I could meet up with you and get one of your contraptions fitted, but no holes to be drilled.😄 The way I was thinking of doing it would involve 4 small holes in that wooden board where the sculling oar rowlock is already fitted. It would need looking at more closely but the point is that if done right you could have a pair of electric drives and leave the outboard where it is. Pushing the boat along at 2 or 3 knots means the outboard leg doesn't make a lot of difference to the drag. Certainly not on a boat that heavy. Might make a tiny difference but really not much. It would be quite easy to do it and if it worked right it could be really cool. The way I would do it would just be a pair of cheap trolling motors suitably mounted and on/off switches for both of them. This takes out the speed controller problem. Use the main outboard for close quarter maneouvering. I assume the boat has a rudder, being a sailing boat, so the trolling motors would not need to be steered. You could motor away from the slip using the outboard then switch on the trolling motors, kill the outboard and steer with the rudder. You could probably steer with the outboard if it had something like an addarudder on it but there must be a rudder on the boat anyway. This would give enough control for doing the boating thing I feel. And a pair of AGM stop-start car batteries one for each motor. Sorted. Hi Andrew, Thank you for taking the time to think about this. For me strapping two motors on the back would spoil the looks. It might also become a snag hazard for the mizzen. Cheers, Paul.
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GRP boat.
May 26, 2021 9:02:31 GMT
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Post by Deleted on May 26, 2021 9:02:31 GMT
They are not all that obtrusive because the top end is cut off. You just mount the lower unit and a couple of feet of the shaft. Nothing would protrude above the wooden board in your case. This is how I did it on the Floating electric beer drinking platform: The cross bar is my rope steering setup. The boat does not want spoiling I totally understand this but it could be done very subtly I reckon.
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Post by paulhd on May 26, 2021 21:23:13 GMT
They are not all that obtrusive because the top end is cut off. You just mount the lower unit and a couple of feet of the shaft. Nothing would protrude above the wooden board in your case. This is how I did it on the Floating electric beer drinking platform: The cross bar is my rope steering setup. The boat does not want spoiling I totally understand this but it could be done very subtly I reckon. That certainly looks more stealthy than i thought it would. I will be at the boat on Friday and I will take a few pics of the well at the rear.
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Post by bodger on May 27, 2021 8:06:41 GMT
as Tina Turner might say - what's stealth got to do with it ?
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