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Old 03 February 2011, 06:36   #1
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Country: Finland
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Two boats, one engine ?

Hi, maybe a strange question but here we goes: considering having identical controls, correct tools and lifting equipment how hard/ what would be a estimated time to remove engine and attach on another hull. I am no pro but learning by doing......In this case referring to my Yam 90 on the SR.

Maybe a crazy idea but considering to purchase a little faster hull( type P16 or Argo) to play around with every now and then and the Yam would be perfect for such use. Those hull's can sometimes be very cheap so not much costs involved without the engine. However the SR will stay as main boat.
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Old 03 February 2011, 11:31   #2
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Sounds like a pain in the butt to me.

Then again, some people put up with a lot of hassle to get by with what they've got, so...

jky
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Old 03 February 2011, 11:47   #3
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I guess if you had duplicated everything apart from the engine, it wouldn't be too bad.

You would need to make sure the engine harness had a plug under the hood, duplicate throttle and gear cables and steering. You would need to disconnect the battery leads from the engine, fuel, and any instrument cabling.

There would be a fair bit of expense in the duplicate equipment.

Once set up with plugs and sockets, couple of hours?
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Old 03 February 2011, 14:07   #4
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not sure i'd want to put my trasom through that sort of regular abuse!
the bolt holes are gona get tired and before long water is gona get in there,
unless your planning on sealing up every time you swop the motor over
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Old 03 February 2011, 14:20   #5
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You can never have too many outboards.
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Old 03 February 2011, 14:22   #6
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Quote:
Originally Posted by JABS View Post
Once set up with plugs and sockets, couple of hours?
I'd have thought that was pessimistic:
  • Disconnect fuel line...............1 min
  • disconnect wiring harness/loom........2 min
  • disconnect battery cables...........5 min (could be made quicker)
  • disconnect gear cable..............1 min
  • disconnect throttle cable............1 min
  • disconnect steering arm linkage........2 min
  • remove steering "rod/piston thingy" from tilt tube..........1 min
  • attach lifting harness to engine........5 min
  • loosen and remove engine bolts......3 min
  • lift engine..........1 min
So 25 mins to get it off the old engine. the same to refit - if everything is set up just waiting.

Another 15 mins if you need to swap props every time.

Organised and efficient from doing it regularly it should be possible to do in an hour. But in terms of faff factor its massive, and a second set of matching controls won't be a trivial cost.
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Old 03 February 2011, 14:28   #7
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I'd say that's optimistic, mounting bolts 3 mins? Assuming 6 bolts then 30 secs per bolt

That'd be rushing which is normally a bad idea, almost as bad as having 2 boats and 1 engine in the 1st place
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Old 03 February 2011, 14:44   #8
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With a hour setting up all the right tools and equipment and laying them out ready for use you may manage it in 25mins but in the real world I reckon a couple of hours for a 90 as well.
This also assumes it is being done regurlarly enough that nothing is stiff or seized.
I would buy another old motor cheap for the "fun" hull rather than do this personally.
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Old 03 February 2011, 16:06   #9
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Thanks for Your comments/input. Sounds like doing it a couple of times /year would not be too bad, but summertime on a weekly basis, guess too much of hassle as probably also prop would need to be changed. Only minor savings on service and insurance.

Downhilldai put it well.... having 4 now, will sell the bombard and towatsu 25/30 so then can buy a another one keeping total number the same, most likely the wife won't notice a difference anyway

Have anyone tested to "tube" the transom holes? I mean to drill the bolt hole slightly oversize and then fit a stainless tube(of a size that the bolts would fit through) with sika. That way, in theory, water would stay away without sealing the bolts separately. Maybe another bad idea....?
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Old 03 February 2011, 16:17   #10
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Quote:
Originally Posted by Polwart View Post
I'd have thought that was pessimistic:
  • Disconnect fuel line...............1 min
  • disconnect wiring harness/loom........2 min
  • disconnect battery cables...........5 min (could be made quicker)
  • disconnect gear cable..............1 min
  • disconnect throttle cable............1 min
  • disconnect steering arm linkage........2 min
  • remove steering "rod/piston thingy" from tilt tube..........1 min
  • attach lifting harness to engine........5 min
  • loosen and remove engine bolts......3 min
  • lift engine..........1 min
So 25 mins to get it off the old engine. the same to refit - if everything is set up just waiting.

Another 15 mins if you need to swap props every time.

Organised and efficient from doing it regularly it should be possible to do in an hour. But in terms of faff factor its massive, and a second set of matching controls won't be a trivial cost.
Sound good to me, what is your hourly labour rate?
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