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Old 05 April 2010, 12:13   #11
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If it's a Seastar helm (I assume Baystar is the same), the recommended level depends on how its mounted (one position requires a level a bit below the fill hole, as I recall, but I don't remember which as it didn't apply to me.) In general, though, you fill the thing up to just below the point it would run out of the filler hole.

As to effort vs fill level, you won't notice any difference in steering effort until the level drops low enough that the pump suck air into the lines; at that point, you will get either a very light effort with little steering effect, or you'll get a jerky movement of the motor (and a substantial amount of feedback to the wheel) as the air compresses, the motor moves and releases pressure, then the air compresses again.

The relevant manuals can be found on the Seastar website at:
http://www.teleflexmarine.com/cgi-bi...=int&page=1003


jky
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Old 05 April 2010, 13:44   #12
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Quote:
Originally Posted by Hightower View Post

As for the steering torq. You could try adjusting the trim tab just behind the prop and see if you can make things a little easier for yourself.

No trim tab on HOs But she runs beautifully straight and true already Only managing 49knts so far though I think I need to be more bold trimming up! Acceleration is PHE-NOM-IN-AL however

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Originally Posted by jyasaki View Post

As to effort vs fill level, you won't notice any difference in steering effort until the level drops low enough that the pump suck air into the lines; at that point, you will get either a very light effort with little steering effect, or you'll get a jerky movement of the motor (and a substantial amount of feedback to the wheel) as the air compresses, the motor moves and releases pressure, then the air compresses again.

jky
Thanks for your advice, I have done a bit more playing around today and it really all is down to the trim setting. There can be less than a second of trim operation between it being as light as a feather and very heavy. In port it just needs a bit of adjustment.
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Old 05 April 2010, 17:19   #13
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Originally Posted by gotchiguy View Post
No trim tab on HOs But she runs beautifully straight and true already Only managing 49knts so far though
Keep trimming, the non HO will be keeping you at bay at those speeds.
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Old 05 April 2010, 17:33   #14
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Keep trimming, the non HO will be keeping you at bay at those speeds.
That would be an absolute disaster! But that has been in rough conditions with wrong trim and in fairly rough conditions.

It has been pretty damn rough the few times I've made it out this week due to the wind yesterday I was having to go very slowly

Tuesday was OK for cruising speeds though ~72nm round trip burned 110 litres so not too bad (average only 25/30knts -second time in boat!!-) However the float gauge seems pretty useless I think I'll have to get a memory module which I think you all have already?

I have also been amazed at how little oil its used, I've done over a 125nm
this week and theres no obvious lowering of the tank, very good!
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