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Old 18 November 2009, 15:07   #51
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Quote:
Originally Posted by Downhilldai View Post
The nobber Hugo Montswannery-Gob did a review of a SR4 with a Yam F50 on RIB International last year. He reckoned it was stern heavy, but perhaps he was carrying the fuel too far aft - can't remember the detail, but maybe someone could dig out the article.
Afterwards, BHG were trying to sell the boat for around £7k IIRC

Anyway, you're better off with something like a 3-cylinder Yam 50 2-stroke.
Great, thanks!

Is that usually fitted with PTT?
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Old 18 November 2009, 15:11   #52
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Back in the early '90s, Yam were doing a special deal on the 50hp with manual start, no PTT for less than £2k, so a lot of these made their way onto cheap boats like SR4s. Nothing wrong with these motors, but ES & PTT is nice to have.

Later versions are much more likely to have the toys on.
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Old 18 November 2009, 15:22   #53
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Quote:
Originally Posted by Downhilldai View Post
Back in the early '90s, Yam were doing a special deal on the 50hp with manual start, no PTT for less than £2k, so a lot of these made their way onto cheap boats like SR4s. Nothing wrong with these motors, but ES & PTT is nice to have.

Later versions are much more likely to have the toys on.
Ah, okay.

I'm going to go for PTT. I think it really effects the performance and capability. ES would be good to have too.
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Old 18 November 2009, 15:25   #54
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You won't have PTT without ES.
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Old 18 November 2009, 15:35   #55
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Quote:
Originally Posted by Downhilldai View Post
You won't have PTT without ES.
It would be good to have as a result of having PTT ....
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Old 18 November 2009, 17:00   #56
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Quote:
Originally Posted by Polwart View Post
if you can learn that the throttle is an analogue control and not just WOT/tickover.

Could I suggest you read the title of a thread prior to posting....

which part of Newbie teen wants a RIB and not expecting WOT being the norm did you not guess?
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Old 18 November 2009, 17:22   #57
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Could I suggest you read the title of a thread prior to posting....

which part of Newbie teen wants a RIB and not expecting WOT being the norm did you not guess?
Matt, It's different when i'm paying for the petrol :P
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Old 19 November 2009, 05:29   #58
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OK, brain dump based on last night's posts.......

SR4 with a 50 will be a bit ballistic. They'll run quite happily (granted a bit lethargic off the mark) with a 25, which then means you can get a nice cheap one (due to the lack of horses) & upgrade the engine later and be picky about your bigger engine..... I have seen a few examples of that where the engine was upgraded, then the hull was enlarged (old hull sold with small engine, Big engine then became a small engine on the next size up hull which in turn was then replaced by a bigger engine...)

PTT - Yeah, it's handy, but if the trim pin is set up properly & the boat balanced, it's not as necessary as it may sound. I used to run mine on 2 posions - "cruise" & "rescue". - tucked in one hole for the short sharp need to get on the plane stuff for resce duties, up a hole for cruising. If you go Yam, the 3-ram PTT unit I am pretty certain was used on everything between 50 & 90Hp, so finding a retro - fit might not be as bad as you think. (I may have one going spare, but not quite yet!) Having said that, it's useful enough that I'm trying to retro- fit my Merc with PT, with two possible options. (hence the "maybe" available) I wouldn't loose too much sleep over it not having PT, but that's just me.

Fuel economy - only really becomes a big difference at long times tickover on engines of that size. At WOT or close to it, the bottom line is you still need to burn X amount of fuel to produce Y amount of heat to create Z amount of horsepower. There won't be a significant difference in the fuel bills unless you are running 24/7. If, however you are doing a lot of waiting around jybe marks for people to tip their dinghies, a 4- stroke is a good choice for a few reasons, the ambient noise being one...... From memory the one 4- stroke 50 that's almost a 2- stroke weight is the carb'ed Honda 50.

The other oservation is that unless you have unlimited budget, your "choice" will probably boil down to the first one that comes along at the right price! (I think you may have seen the beginnings of this scenario already! - I had planned for an SR4.7, but the Humber appeared at the right price & fitted my garage, so I now have a Humber!)
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Old 19 November 2009, 11:32   #59
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Originally Posted by 9D280 View Post
OK, brain dump based on last night's posts.......

SR4 with a 50 will be a bit ballistic. They'll run quite happily (granted a bit lethargic off the mark) with a 25, which then means you can get a nice cheap one (due to the lack of horses) & upgrade the engine later and be picky about your bigger engine..... I have seen a few examples of that where the engine was upgraded, then the hull was enlarged (old hull sold with small engine, Big engine then became a small engine on the next size up hull which in turn was then replaced by a bigger engine...)

PTT - Yeah, it's handy, but if the trim pin is set up properly & the boat balanced, it's not as necessary as it may sound. I used to run mine on 2 posions - "cruise" & "rescue". - tucked in one hole for the short sharp need to get on the plane stuff for resce duties, up a hole for cruising. If you go Yam, the 3-ram PTT unit I am pretty certain was used on everything between 50 & 90Hp, so finding a retro - fit might not be as bad as you think. (I may have one going spare, but not quite yet!) Having said that, it's useful enough that I'm trying to retro- fit my Merc with PT, with two possible options. (hence the "maybe" available) I wouldn't loose too much sleep over it not having PT, but that's just me.

Fuel economy - only really becomes a big difference at long times tickover on engines of that size. At WOT or close to it, the bottom line is you still need to burn X amount of fuel to produce Y amount of heat to create Z amount of horsepower. There won't be a significant difference in the fuel bills unless you are running 24/7. If, however you are doing a lot of waiting around jybe marks for people to tip their dinghies, a 4- stroke is a good choice for a few reasons, the ambient noise being one...... From memory the one 4- stroke 50 that's almost a 2- stroke weight is the carb'ed Honda 50.

The other oservation is that unless you have unlimited budget, your "choice" will probably boil down to the first one that comes along at the right price! (I think you may have seen the beginnings of this scenario already! - I had planned for an SR4.7, but the Humber appeared at the right price & fitted my garage, so I now have a Humber!)
Thanks 9D280! This is a lot of help.

Buying a cheap low hp engine could be an option, which i could later upgrade to one of my choice. As you say, it's likely i'll probably have to take what i can get at the right price, so maybe i could buy fairly low HP, and switch to an ideal one maybe a year or two later.

I'll keep it in mind.

Same goes for PTT, maybe it would be better to buy the engine with PTT, after the initial buy. It depends what comes along.

2-Stroke doesn't bother me, in fact, if i was to go with the "buy ideal engine later" plan, a modern 2-stroke would probably be my preference. I don't see me doing any rescue in my boat anyway (at least i hope not!)
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Old 19 November 2009, 11:40   #60
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I used my RIB for "support boating", got grief because I didn't have a prop guard. So they told me I needed one (ideally). Next week, RYA had said something about not needing a prop guard at all, its like make your minds up and stop buggering me about as I do stuff out of my own time and expense!
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