Sliding Seats

  • 30 Mar 2021 19:56
    Reply # 10253593 on 10251819
    Anonymous wrote:

    Thanks Howard. Its a clever idea, but I'm trying to keep things simple and its probably a bit complicated to adapt to a little sail boat.


     I'm not sure it's significantly more complicated than a sliding seat... The only real difference would appear to be that the oarlocks are attached to the slider instead of the gunnels
    Last modified: 30 Mar 2021 19:59 | Anonymous member
  • 30 Mar 2021 08:31
    Reply # 10251819 on 10242459

    Thanks Howard. Its a clever idea, but I'm trying to keep things simple and its probably a bit complicated to adapt to a little sail boat.

    Last modified: 30 Mar 2021 08:33 | Anonymous member
  • 29 Mar 2021 17:02
    Reply # 10248998 on 10242459

    Rather than a sliding seat, slide the foot rests and oarlocks.   You would get the same effect without the weight shift.    Seems obvious to me at least.    Not an original idea:     Oarboard





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  • 29 Mar 2021 10:01
    Reply # 10247615 on 10242459

    Great to see you on the forum Slieve. Yes, I want to learn about yulohs. I know about your notes too, and intend to refer to them.

    I thought how handy it is, though, to be able to manage at any time with one oar, and how handy it is to be able to leave a dinghy with just one oar, and know that the chances of getting it pinched is less than if two oars. I just thought I might start with an oar. I presume the skill is transferable?

    No, I haven't given up!

    Last modified: 29 Mar 2021 10:05 | Anonymous member
  • 29 Mar 2021 09:47
    Reply # 10247570 on 10242459

    Hi Graeme,

    Why not rig a yuloh?

    Look in - Junk Information, Public Domain file by Slieve, Yuloh Efficiency.pdf

    Cheers, Slieve.

    PS. still plan to write soon. Don't give up.

    Last modified: 29 Mar 2021 09:47 | Anonymous member
  • 29 Mar 2021 01:04
    Reply # 10246200 on 10242459

    Thank you David, advice much appreciated. I do recall reading something like that somewhere, and had forgotten. It might have been from Welsford in fact, I had forgotten, anyway.

    I have been thinking about some proper oars for Little Dipper (my Golden Bay) following Culler's model. Looking forward to doing some rowing.

    Thanks for the advice regarding length, too. I have a bit of a problem rowing out of the mangrove creek. Without a rear vision mirror it is almost impossible to avoid fouling mangroves with the oars, one side or the other - and, you know, the old neck is a bit stiff these days. Sometimes have to pull the oars right in and row with the looms under my neck!

    I think I want the right oars to match the dinghy - and the answer for the narrow creek is obviously to learn how to scull over the stern properly. I must make the effort. I've watched Marcus and he can not only propel a dinghy with a single scull, he can pull, push and shove with quite a bit of power when the occasion calls for it. I've really got to buckle down and learn to do this.

    Last modified: 29 Mar 2021 02:23 | Anonymous member
  • 28 Mar 2021 17:05
    Reply # 10244474 on 10242459

    My understanding is that the minimum length for a sliding seat boat is at least 5m, or your weight sliding back and fore affects the trim too much and the bow dips; and that when sculling with two oars (as opposed to rowing with one oar per person), sliding seats only become necessary when the length of the oar gets up to the ~2.9m commonly used, and the span between oarlocks therefore gets up to ~1.8m, so that outriggers are needed. On the St Ayles Skiff and the pilot gigs, it's one oar per person, and the rowing action is different, with the rower sitting to one side of the boat and the loom actually passing the rower's body, so that even though the oar length is more than 3m, no sliding seat is needed. Going by the usual rule of thumb that the oar length = twice the beam for non-outrigger boats, the Golden Bay won't have oars longer than 2.6m, and 2.4m would make for a more comfortable, easier pull, I think.

  • 27 Mar 2021 22:54
    Message # 10242459

    Six months ago I bought a second-hand rowing machine and set it up on the jetty, down here in the mangrove creek, where rowing should be a pleasure.

    Not dependent on the tides this way.

    I have never really had a proper rowing boat - always just general purpose dinghies, and never before thought of a sliding seat. With little dinghies short rapid strokes seems to be best. So no point in anything fancy in the way of balanced oars etc.

    As R. D. Culler once remarked about dinghies of poor model: "They're so bad you can't row 'em, you just sort of pry 'em along".

    But the rowing machine has made me aware of something that half of you probably knew already: a decent rowing boat that likes long slow strokes, might go better with a sliding seat.

    Which brings me to the newly acquired Welsford Golden Bay, which is really nice to row. It might have the legs of PreLim and Buddy, I wouldn't be surprised. (Its looking to be more of a rowing boat than a sail boat under its current over-sized lug sail. It responds quickly in light airs but I don't dare try it yet in gusty conditions. Its definitely got to have a junk rig).

    I want to give it side tanks and a moveable thwart, as suggested by Marcus and recommended by David too. I wonder if it could be set up with a short moveable thwart accurately placed between two buoyancy tanks - on little plastic runners of some kind - making a sort of sliding seat for rowing. Would that work?

    Can anyone who knows about these things advise?


    Last modified: 28 Mar 2021 06:29 | Anonymous member
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