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Old 24 June 2007, 14:24   #41
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pwyhelli, North wales.
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Old 24 June 2007, 14:44   #42
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Originally Posted by Downhilldai View Post
My fuel tank is 200 litres.

The 150 Optimax requires 800CCA to spin it over. The Ah rating is an indication of how long the battery can provide a given amount of power for, rather than how it will deal with surges of energy, eg cranking over a large capacity motor. That is why leisure batteries have an Ah rating and starter batteries have CCA ratings. It is useful to know both ratings of a battery though. My Optima gives 810CCA, but only has a 50Ah capacity, so I decided to fit a second battery, just in case........
Andy I have just fitted 2 identical Odessy (sp?) AGM batteries via a Merlin VSR charging system it works really well, the CCA is 900amps the AH is 40 however I have had no problems at all even when my engine was having cold start problems I was cranking away in 5 second bursts for quite a time and there was no sign of the battery flagging.

The second battery powers the GPS, VHF, Bilge, etc and is more than upto the job, the VSR relay Automatically charges the Starter battery first then the House battery second and there are switches to isolate both batterys or tie them both together should you ever need to for extra power to the starting circuit.

Plus they are guaranteed for 5 years and can be mounted on their sides or even upside down if you desired.

Well worth a look.

Chris
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Old 24 June 2007, 15:08   #43
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Originally Posted by Chris1573 View Post
Andy I have just fitted 2 identical Odessy (sp?) AGM batteries via a Merlin VSR charging system it works really well, the CCA is 900amps the AH is 40 however I have had no problems at all even when my engine was having cold start problems I was cranking away in 5 second bursts for quite a time and there was no sign of the battery flagging.

The second battery powers the GPS, VHF, Bilge, etc and is more than upto the job, the VSR relay Automatically charges the Starter battery first then the House battery second and there are switches to isolate both batterys or tie them both together should you ever need to for extra power to the starting circuit.

Plus they are guaranteed for 5 years and can be mounted on their sides or even upside down if you desired.

Well worth a look.

Chris
Is this something you need then? All I was going to do was to install a 4 way Isolator and controll the charging manually from there.
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Old 24 June 2007, 15:09   #44
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pwyhelli, North wales.

Is Jono comming along for moral support?
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Old 24 June 2007, 15:44   #45
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Is this something you need then? All I was going to do was to install a 4 way Isolator and controll the charging manually from there.
Andy I did not want to have to remeber to switch stuff over and also how do you know when to to do it anyway?

I thought that for 90 you get the relay and the isolator switches and it does it all for you when the start battery is charged.

Its one less thing to remember.

Chris
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Old 24 June 2007, 16:41   #46
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I was just going to get two dual purpose batteries, one a larger capacity that the other and always run it on "both together mode" or one on the outward leg and the other on the inward leg of a journey, the smaller of the two batts was going to be used seperatly whilst fishing, to power lights, radio etc and whilst at anchor, mooring or berth to power a bilge pump.

The battery I've got at the mow is an Squadron Energy SFL 120 with a CCA of 825 and MCA of 1000, if I add another battery of the same type but with an 80 AH capacity, I should have plenty in reserve.
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Old 24 June 2007, 17:22   #47
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Is Jono comming along for moral support?
Isnt that what the RNLI are there for Isnt Jono helmsman on the ILB and chief Camera man
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Old 16 July 2007, 13:51   #48
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Took the vipermax out on the maiden voyage saturday, performed far better than ever anticipated, had a nice f5 swell to play in. pity we couldnt get any action shots but the last few pics moored up off a calm Abersoch beach.
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Old 16 July 2007, 13:53   #49
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and a few more
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Old 16 July 2007, 14:56   #50
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still built by Osprey laminators up north, roy bishop is the Osprey uk dealer which Jono is now involved with to some extent, jono has took them forward leaps and bounds for sure,
infact all osprey hulls are built in uk as they have allways been and should bar a few be tubed by eurocraft,
If I'm correct, the new stepped range of Osprey is no longer build in the UK.
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