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Old 02 December 2011, 03:26   #31
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A few have ask about this transom dam. Unfortunately this isn't something you can fit yourselves. Not saying most couldn't fit one but the mould was made oversize as a blank so to speak
I lay it up. Scribe it to your boat taking into account all the bits in the way and when it fits to my satisfaction I'll put the attachment flange on it
You could fit it yourself then

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Old 02 December 2011, 04:01   #32
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Hate to deny you guys the use of this. I'll have a look to see if it can be supplied as a blank. You could hold it in place and glass it in but then you couldn't remove it better to lay it on a flat board and layup a lip on the underside. Then you can screw it on. The reason I'm reluctant is if you bugger it up it's still got my name on it. You can come across all kinds of things in the way. Steering is the main obstacle then the engine tilt. You might have to put recesses to clear the link arm. This is where it get more complicated.

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Old 02 December 2011, 04:03   #33
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Quote:
Originally Posted by HUMBER P4VWL View Post
My research finds the opti 115 to be 170kg or 177kg for long shaft,? the etec 130 is 177kg or 184kg for a long shaft. The 135 opti is a 2.5L V6, much heavier, whereas the 130 etec is a 1.7L 4cyl block.
Why didn't you extend your research to the 125 Opti, which would be a more even comparison to the 130 e-tec?


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The 115 opti is a 1.5L 4cyl.
No, it's a 3-cylinder, as is the 125 Opti.
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Old 02 December 2011, 04:04   #34
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IMHO chine walking, in a lot of cases is a result of poorly rigged & handled boats & to some degree the imagination of the crew/handler. The 585 above with the 175, yes was OTT but the power wasn't wasted. We used to dive a wreck 23nm off shore over in France & due to the time of slack water, depth/deco of the dive, & time that the "Ecluse" (lock gates on the harbour) closed. We had about an hour after the last diver was out of the water to get back to harbour before the gates closed. We had to choose our days to get the weather & tides right, but we regularly ran back in at 45kn with 3 divers + cox. The boat was solid & sure footed without a hint of instability. Choose a good hull, get the loading right, correct prop, engine height setup & well handled & unless you're extremely unlucky, chine walking is in your head. Some people seem to wear "Chine Walking" as a badge of honour "ooh we had her chine walking...." Did they really? or was it because they weren't driving to suit the conditions
I've had my grumbles about RC, but IMO the 585 hull is one of the finest around, & I've been in a few Get some horses on the back & enjoy. 90hp won't do her justice.
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Old 02 December 2011, 04:10   #35
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Our 90 made the 5.4 sr chine walk and had instant mid range. Would a 115 not do the same with a RC 585?
Unlike the RC585, the SR5.4 doesn't have a planing pad, so would be more prone to chinewalk. Its lighter weight also increases its tendency to do this, so you're not really comparing like with like. As an aside the 3-cyl Opti is heavier than Avon recommend for an SR5.4 with 20" transom.

I've been on a number of RC585s with 115+hp and they've all driven fine, if a touch light in the bow. A good motor for this boat is the DF140 Soozook, not yet discussed in this thread.......
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Old 02 December 2011, 04:44   #36
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Quote:
Originally Posted by Downhilldai View Post
Unlike the RC585, the SR5.4 doesn't have a planing pad, so would be more prone to chinewalk. Its lighter weight also increases its tendency to do this, so you're not really comparing like with like. As an aside the 3-cyl Opti is heavier than Avon recommend for an SR5.4 with 20" transom.

I've been on a number of RC585s with 115+hp and they've all driven fine, if a touch light in the bow. A good motor for this boat is the DF140 Soozook, not yet discussed in this thread.......
scuse my ignorance DHD but what is a planing pad?? is it where the hull flattens out near the stern.
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Old 02 December 2011, 04:52   #37
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It's the flat spot at the stern where the keel looks like its been ground off. Triangular ish in shape, size depends on hull design. Could be a foot or so wide & extend 18" or so towards the bow
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Old 02 December 2011, 04:57   #38
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Old 02 December 2011, 06:22   #39
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A few have ask about this transom dam. Unfortunately this isn't something you can fit yourselves. Not saying most couldn't fit one but the mould was made oversize as a blank so to speak
I lay it up. Scribe it to your boat taking into account all the bits in the way and when it fits to my satisfaction I'll put the attachment flange on it
You could fit it yourself then

sent from a remote device
For some reason my hull came out with a 25" transom by mistake which is why it's about the only Ribeye made Ribtec without a Yamaha, the only engine long enough available at the time was the 115 on it now - Was handy on Sunday though when it was a bit choppy.
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Old 02 December 2011, 07:00   #40
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Kerny, keep up!

Dhd, learn something new each day. Didn't know they did a 125 opti, is tht still the 1.5l block?

Meant 3cyl, oops. Nice and quiet though.

Re RC chime walking, that's why I asked the question.

I still think over 150 on a 585 is getting excessive. But heh, as I said, horses for courses.
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