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Old 07 November 2016, 15:42   #31
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No more than 100kgs max as it wont go any faster than 39 knots withoit chucking you out. A correctly balanced sr4 will do 37 with a twin pot merc ..[/QUOTE]

that's what mine did 36-37 knots but was nice and stable at that even when the sea conditions were suggesting I slowed down I had one 25 litre tank and battery under the jockey seat and another 25 litre tank in front of the console, was a cracking little rib and I'm sure ill regret selling it
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Old 07 November 2016, 16:05   #32
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Originally Posted by matt h View Post
Deluxe version. Leave the transom alone and looks for a merc 40-50 two stroke .
Also shift the fuel tank under seat for better weight distribution.
(40 two stroke up to 2006)
(50 two stroke up to 1999) im sure after that they got heavier
Yam 40 two stroke or 4stroke.
Yam 50 two stroke also good but a heavier 3 pot engine.

No more than 100kgs max as it wont go any faster than 39 knots withoit chucking you out. A correctly balanced sr4 will do 37 with a twin pot merc ..
After seeing Gibbo's SR4 with the big propped Yam 50 2 stroke launch itself out of the water, I'd suggest that a Merc/Mariner Bigfoot 2 stroke or a late (well, as late as is possible) model Yam 50 2 stroke would be about as much fun as you can have with an SR4. Mine had a (93ish) merc 3 pot 50hp on it with a normal 10.5" diameter prop and was nuts. The extra grip from Gibbo's bigger prop made for jetski-like acceleration.

As you say, at 39 knots they get so flighty and chinewalk so much that you really don't want to be trying to go any faster anyway.
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Old 07 November 2016, 17:48   #33
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Shameless plug but I have a 50hp M50D2 2006 model thats for sale. Details are in the bits and bobs for sale section on here. Currently mounted on my SR4, very light weight and very quick
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Old 07 November 2016, 19:24   #34
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that's what mine did 36-37 knots but was nice and stable at that even when the sea conditions were suggesting I slowed down I had one 25 litre tank and battery under the jockey seat and another 25 litre tank in front of the console, was a cracking little rib and I'm sure ill regret selling it
The new owner loves it so he doesn't regret a thing :-)
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Old 08 November 2016, 02:40   #35
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Anything over 25kts in rought weather will be highly uncomfortable anyway. Acceleration is what you need.

@Alexr, as someone already said you have a Searider with a "moulded" deck, the deluxe version!

Engine wise, the three - cylinder Yamahas are very good especially with PTT.

Personally, I swear on the two-cylinder 55 Yam, it has more torque than the 3-pots, at about the same weight. Unfortunately you'll need to pre-mix the oil and it doesn't have PTT.
And it uses more fuel. And it's got a slightly dodgy idle.
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Old 08 November 2016, 13:27   #36
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Thanks for all your help and advice guys, what I've learned is i will soon be on the lookout for an 50hp merc or yam 2 stroke engine, but i will take the rib out with the 70hp on the back - very very carefully - any problems and she will be straight back ashore till i get the 50hp, i will make some of the weight adjustments advised, any other advice would be greatly appreciated, many thanks alex
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Old 08 November 2016, 14:01   #37
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Just a quick update (forgot to put in the last post!) just seen a 50hp yam for sale, just wondering is there much of a call for 70hp outboards, don't see many advertised? Thanks again alex
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Old 08 November 2016, 15:27   #38
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Just a quick update (forgot to put in the last post!) just seen a 50hp yam for sale, just wondering is there much of a call for 70hp outboards, don't see many advertised? Thanks again alex
to be honest that outboard is not very sought after and itl require a good sales pitch to get rid of it but anything will sell if its cheap enough, I wouldn't factor in the sale price into your budget for its replacement.
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Old 09 November 2016, 05:27   #39
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My SR4 has a Honda 50 fitted, 34k is fast enough for a fat old man like me, it's fitted with a console/twin jockey seats and a 90l fuel tank, still sips the fuel and goes well enough, still got the flooding hull
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