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Old 01 January 2012, 10:17   #21
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DON'T let Chewy kiss you. He uses tongues.
No complaints though eh honey
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Old 01 January 2012, 10:21   #22
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I run 4 x sr4's with f30's on the back which I can get around 25kts from with the correct prop and 2 people on board on flat water.

The f30 and f40 are the same engine and weigh in at 89kg. The f50 is 110kg. I wouldn't want the transom any lower at rest and I'd imagine that extra 20kg would make a lot of difference to the way it sits and handles.
If funds allows I'd go for a new f40. Not much less power but a lot less weight so probably just as quick as the 50.
I'm not sure I'd want more than 40 on the back having driven one a few years ago. I've never driven one with 50 on but it will chine walk a fair bit with a 30 at WOT when trimmed out and one person on board. Ease of a bit, trim in or put another person onboard sorts it but a 50 must be scary!

I'm amazed at how much more efficient the new fuel injection f30's are than than the old triple carb versions. The 40 can't be that much more thirsty as its the same engine just detuned a bit, presumably by electronics or restricting the exhaust.

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50 is ok at WOT as long as you keep a fair bit of weight in the bow.
There's a bit of video here of my old SR4 with a 50hp Mariner 2 stroke on the back -at 01.16,2.00 and at 2.25 at WOT.

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Old 01 January 2012, 10:23   #23
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I guess have it figured out....lol

I'm not much of a computer guy, so you'll have to excuse my ignorance. All this quick wit and fast typing tires me out...I'm pretty sure there were at least two posts and a video inbetween the 30 seconds it took for me to post the second reply.

I know when I've been beaten

I actually just looked at a F40 Yamaha...If I can get over the loss of the two stoke snap, this is a very good option. I have had outstanding luck with my carb'd F50s on a heavy work barge so I trust these motors.

Otherwise it's a 50 two stroke for me. Never thought of shipping one from over your way...wouldn't that be costly? I hope to find one here in the next few months
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Old 01 January 2012, 10:24   #24
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No complaints though eh honey


On second thoughts, no ta!
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Old 01 January 2012, 10:48   #25
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Here's a quick video that Nos took of me in my old SR4, the outboard was a Yamaha 40hp 2 stroke and it went like stink!

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Old 01 January 2012, 12:12   #26
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Nice video. Mine goes pretty good with the tired Johnson 40 on there now, so my expectations are pretty high. Finding this famed Yam 50 is going to be tough. There are a couple dealers still advertising leftovers, so that may be a good route if they are still available.

Searching around this site makes me want a bigger one! I'm always impressed with the seakeeping ability of this little boat, but the extra room of a 5.4 would sure be nice!!

Anyway, thanks for the help
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Old 01 January 2012, 14:31   #27
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First day of the year I've already upset some one lol.
Start as you mean to go on, I always say...
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Old 01 January 2012, 15:01   #28
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I have the yam 2st 50hp on my SR4 & it gose very well I do not suffer chime walking, but I do have Dolfins fitted which dose slow it down a bit.
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Old 01 January 2012, 15:01   #29
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Start as you mean to go on, I always say...
Yep
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