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Post by Deleted on Feb 26, 2019 15:26:38 GMT
Of my 3 diesel driven boats two are indirect sea water cooled (beta Kubota 90 which I bought from Beta and fitted myself in 2011 and Kubota Marine 16hp from about 1980 in my little sea boat). Both these have some problems with the inlet specially on shallow canals.
The other one which is a Perkins p4 is cooled straight from the skin tank with an electric Johnson circulation pump.
The skin tank is much less agro but engine will get quite warm under sustained load in summer. Not overheatinf but hotter than normal.
The other ones if the filter/mud box/ strainer is clear they are fine in terms of temperature regulation. I had considered converting the Beta 90 to skin tank as it would be a lot less agro and I don't tend to race about anyway.
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Post by Deleted on Feb 26, 2019 18:58:20 GMT
I know the Beta 90 is in a big boat but check on the beta website the size of the skin tank required its about 22.5 sq ft. The Beta 50 in Loddon was originally skin tank cooled with a wet exhaust (fathom that) but the skin tank was no where near large enough so its been converted to heat exchanger cooled. I get very few problems with the strainers even in muddy canals its only a once a day job, when I stop for the night I just wash the Vetus filter out to clear the silt. On rivers it can be weeks between washouts.
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Post by Deleted on Feb 26, 2019 19:31:39 GMT
I know the Beta 90 is in a big boat but check on the beta website the size of the skin tank required its about 22.5 sq ft. The Beta 50 in Loddon was originally skin tank cooled with a wet exhaust (fathom that) but the skin tank was no where near large enough so its been converted to heat exchanger cooled. I get very few problems with the strainers even in muddy canals its only a once a day job, when I stop for the night I just wash the Vetus filter out to clear the silt. On rivers it can be weeks between washouts. Good point about the skin tank. The boat is overpowered but that's just because I replaced a nackered Perkins M90 and needed something with a similar torque curve. Not keen on another Perkins at the time due to having seen how it failed (cracked crankcase beside an engine mount bracket). The only real problem with the mud box is when the cut is completely covered with duck weed. Other than that its okay to be fair. Eta skin tank cooled with a wet exhaust? I guess a small DC or maybe belt driven positive displacement water pump must have been used to inject water drawn from the canal into the exhaust for the silencing effect. This also allows the use of flexible convoluted rubber exhaust pipe so there would be more flexibity. Quite a common silencing solution on generator sets but possibly less common on main engines.
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Post by Deleted on Feb 26, 2019 21:22:20 GMT
Jabsco water pump is direct driven off the engine not by belts, only downside is that the exhaust injection is 15mm (hangover from original install) not 28mm so flow is reduced, one day I will build a new injection elbow. Intake is on the rear swim 18" below waterline so no weed problem for me I've had more boats with wet exhausts than dry its the way to go!
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Post by Deleted on Feb 26, 2019 21:29:19 GMT
Jabsco water pump is direct driven off the engine not by belts, only downside is that the exhaust injection is 15mm (hangover from original install) not 28mm so flow is reduced, one day I will build a new injection elbow. Intake is on the rear swim 18" below waterline so no weed problem for me I've had more boats with wet exhausts than dry its the way to go! If it is a direct drive jabsco pump the engine must have been a HE seagoing version originally as I don't think the Inland versions have the option or maybe they do and it is blanked off. Referring to the beta 50. that's interesting that it was installed to use a skin tank while retaining the water injected exhaust.
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Post by freewind on Feb 26, 2019 22:40:02 GMT
Jabsco water pump is direct driven off the engine not by belts, only downside is that the exhaust injection is 15mm (hangover from original install) not 28mm so flow is reduced, one day I will build a new injection elbow. Intake is on the rear swim 18" below waterline so no weed problem for me I've had more boats with wet exhausts than dry its the way to go! Your water intake being 18" below waterline is interesting. Mine is flush on the swim giving a depth of about 3". It is probably contributing to frequent blockages cos that's where most of the weed is. Will have a look tomorrow to see what I can do to improve the situation. Thanks.
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Post by Deleted on Feb 26, 2019 23:06:30 GMT
Jabsco water pump is direct driven off the engine not by belts, only downside is that the exhaust injection is 15mm (hangover from original install) not 28mm so flow is reduced, one day I will build a new injection elbow. Intake is on the rear swim 18" below waterline so no weed problem for me I've had more boats with wet exhausts than dry its the way to go! If it is a direct drive jabsco pump the engine must have been a HE seagoing version originally as I don't think the Inland versions have the option or maybe they do and it is blanked off. Referring to the beta 50. that's interesting that it was installed to use a skin tank while retaining the water injected exhaust. Its a very early Beta built in 1993 it was built to use with a skin tank (I checked with Beta and that is what their records say) The pump drive is I believe there on all the engines just blanked off for those that don't need it. The engine is so early it has hand drawn circuit diagrams
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Post by Deleted on Feb 27, 2019 10:53:18 GMT
"The option of course, is the Manchester Ship Canal. Depends which part of Yorkshire you're trying to get to I suppose."
Don't like the sound of that much.
So I've been making my plans - essentially I start my new job on the 25th March so my plan is to moor up the boat, head up to Yorkshire on the train and stop at my folk's for that week. By my (or more specifically canalplan's) reckoning, I should get to Newark-on-Trent by the 24th, if all is well. So my plan would be to come back to the boat on the evening of the 29th March to crack on the next morning. I'm wondering how that suits for heading up the tidal Trent that weekend?
Cheers!
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Post by TonyDunkley on Feb 27, 2019 12:31:45 GMT
"The option of course, is the Manchester Ship Canal. Depends which part of Yorkshire you're trying to get to I suppose."
So I've been making my plans - essentially I start my new job on the 25th March so my plan is to moor up the boat, head up to Yorkshire on the train and stop at my folk's for that week. By my (or more specifically canalplan's) reckoning, I should get to Newark-on-Trent by the 24th, if all is well. So my plan would be to come back to the boat on the evening of the 29th March to crack on the next morning. I'm wondering how that suits for heading up the tidal Trent that weekend?
The only potential problem with any of that is finding somewhere safe to leave the boat unattended during w/c Mon 25 March, and probably during w/c Mon 1 April, . . . unless you want to push on over the weekend of 30 and 31 March and get all the way to Leeds by the Sunday night. With the tides as they'll be over that weekend - bottom of Neaps predicted 0118 hrs at Hull on Sat 30 March - you'll be OK setting out from Cromwell for Keadby pretty well any time that suits you early(ish) on either Saturday or Sunday morning and getting off the river and into the canal at Keadby on either the very last of the Flood(tide), around (local) High Water, or on the first of the Ebb.
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Post by Deleted on Feb 27, 2019 14:36:32 GMT
The only potential problem with any of that is finding somewhere safe to leave the boat unattended during w/c Mon 25 March, and probably during w/c Mon 1 April, . . . unless you want to push on over the weekend of 30 and 31 March and get all the way to Leeds by the Sunday night. With the tides as they'll be over that weekend - bottom of Neaps predicted 0118 hrs at Hull on Sat 30 March - you'll be OK setting out from Cromwell for Keadby pretty well any time that suits you early(ish) on either Saturday or Sunday morning and getting off the river and into the canal at Keadby on either the very last of the Flood(tide), around (local) High Water, or on the first of the Ebb. Yeah, that was in the back of my mind about leaving the boat for a week, although I have in the past left it in central London for a week and amazingly it didn't get stolen or broken into. The other option is just work from Newark, which is a reasonable sized place and so either work from the boat or find a space somewhere to work from - which incidentally, I have just found on Google - so may end up just staying in Newark for the week. I think that would probably make more sense and easier to get started on the Saturday morning than coming down from North Yorkshire last thing Friday night/first thing Saturday morning.
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Post by TonyDunkley on Feb 27, 2019 14:53:59 GMT
The only potential problem with any of that is finding somewhere safe to leave the boat unattended during w/c Mon 25 March, and probably during w/c Mon 1 April, . . . unless you want to push on over the weekend of 30 and 31 March and get all the way to Leeds by the Sunday night. With the tides as they'll be over that weekend - bottom of Neaps predicted 0118 hrs at Hull on Sat 30 March - you'll be OK setting out from Cromwell for Keadby pretty well any time that suits you early(ish) on either Saturday or Sunday morning and getting off the river and into the canal at Keadby on either the very last of the Flood(tide), around (local) High Water, or on the first of the Ebb. Yeah, that was in the back of my mind about leaving the boat for a week, although I have in the past left it in central London for a week and amazingly it didn't get stolen or broken into. The other option is just work from Newark, which is a reasonable sized place and so either work from the boat or find a space somewhere to work from - which incidentally, I have just found on Google - so may end up just staying in Newark for the week. I think that would probably make more sense and easier to get started on the Saturday morning than coming down from North Yorkshire last thing Friday night/first thing Saturday morning.
Not quite what I meant, . . . finding somewhere safe to leave the boat between Keadby and Leeds is what's going to need some thought, or the alternative is to do Newark to Leeds over the weekend of Sat 30 and Sun 31 March.
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Post by Deleted on Feb 27, 2019 15:02:59 GMT
Yeah, that was in the back of my mind about leaving the boat for a week, although I have in the past left it in central London for a week and amazingly it didn't get stolen or broken into. The other option is just work from Newark, which is a reasonable sized place and so either work from the boat or find a space somewhere to work from - which incidentally, I have just found on Google - so may end up just staying in Newark for the week. I think that would probably make more sense and easier to get started on the Saturday morning than coming down from North Yorkshire last thing Friday night/first thing Saturday morning.
Not quite what I meant, . . . finding somewhere safe to leave the boat between Keadby and Leeds is what's going to need some thought, or the alternative is to do Newark to Leeds over the weekend of Sat 30 and Sun 31 March. Ah, of course. I found a marina in Thorne which is just up from Keadby called Blue Water Marina (http://www.bluewatermarina.co.uk/) who responded quickly to my enquiry. And only £7 a night! So I could leave it there for the week if needs be.
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Post by pearley on Feb 27, 2019 16:01:55 GMT
The pontoon at Newark is full but there are spaces in Kings Marina
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Post by Deleted on Feb 27, 2019 16:12:09 GMT
The pontoon at Newark is full but there are spaces in Kings Marina Oh excellent! Thank you, I'll get in touch with them and see if I can book a space.
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Post by kris on Feb 28, 2019 19:29:25 GMT
Not quite what I meant, . . . finding somewhere safe to leave the boat between Keadby and Leeds is what's going to need some thought, or the alternative is to do Newark to Leeds over the weekend of Sat 30 and Sun 31 March. Ah, of course. I found a marina in Thorne which is just up from Keadby called Blue Water Marina (http://www.bluewatermarina.co.uk/) who responded quickly to my enquiry. And only £7 a night! So I could leave it there for the week if needs be. There are lots f moorings along that stretch, if you didn't want to use a marina.
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