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Posts posted by Redcap19
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I have finally got to boat back out and was running a new prop on her and i was getting 5200 and am now get 16 knot so a lot better than before just need to fine tune abit more 👍👍
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Ok ill check then thanks for your help
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It rev up to the 4300 revs no problem and just says there iv had the hood of and checked it be for that it is out fully
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1 minute ago, GPSguru said:
The boat is rated by Orkney at 14knts with an absolute max of 22knts.
There are a lot of Strikeliners here locally and not many guys get more than 16 - 18 knts even with a 30 on the back and only single crewed !
If your boat is propped correctly and the hull is clean, then you have an engine issue, which usually means it is running way too lean at high rpm.
Take it for a run at max rpm, stop the boat and pull the plugs, if they are white, then it is too lean.
Also remember that with a displacement boat, your speed will influenced buy whether you are running with the tide or against the tide.
I when yesterday so ill check the plug iv all ways been told to run my outboards 50:1 mixs so i had 24l of fuel and 480ml of oil as that what quicksliver says ?? When i go the boat it had a 10 1/2 x 11 pitch and it was doing 16 knots and it was a bit choppey and i was full throttle and couldn't keep up with my m8
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On my m8 25hp yamaha he has the same size prop there both 91/2 x 13 pitch
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The boat is rated off 22knots woth a 25hp on the back iv tryed to different props and im friend has the same boat and he is running a 25hp yamaha and he gets 19 knots at 3/4 of a throttle
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Hi its a 25hp johnson
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Hi guy finally got my boat out and got the digital rev gauge on and had it tunning great butt still cant get more than 10 knots out of her it ticks over at 840 and revs up to 4300 flat out and the compression is 125 in each chamber and i have checked all the back and front boxs
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18 minutes ago, captin slows old outlaw said:
i fell for you, its so frustrating waitng to get orgernised to try the next test . but you will get there.
good luck
Thanks i hope so just need weather to test it and find the next step
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36 minutes ago, Saintly Fish said:
Well if you’ve done all of the suggestions as above and all checks out ok, then I’d say your at you optimum performance. Unless as @Andy135 says, your prop is slipping.
Yer im getin a rev gauge and ill check the prop and see
- suzook12, Saintly Fish and Geoff
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8 hours ago, GPSguru said:
If there is nothing obvious then you need to check the weight of the boat ............
I have and contacted the orkney company
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2 hours ago, captin slows old outlaw said:
nice boat, there are so many reasons for loss of spead, i have a smimerler problem,
i have been told that i dont have anouf whaite in the bow. when i can get out on the water i will find out.the outhers on here have beter knollage than me, i just trial and eara and see what gives
Thank you yer all we can do is trial and error and change things if we can good luck
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3 minutes ago, Andy135 said:
Ok, so one final thing to suggest - your prop hub. Is it still intact? Have you, or maybe a previous owner, hit something with the prop to make the hub shear (they're designed to do this to spare the gearbox from serious damage)? If so, you'd get full revs with your engine, but the hub would be slipping and the prop won't rotate as fast. A long shot, but this could cause your lack of speed.
Ok iv tryed 4 different prop 2x 11 pitch
2x 13 pitch and dosnt make different i get the same speed out of all the prop but i will check them and get a rev gauge and go from there and check the seats again
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3 minutes ago, Andy135 said:
@Redcap19, when I had my Orkney I found that both corner voids underneath the rear bench seat were full of rainwater. I only found this out when I unscrewed the bilge pump to replace the diaphragm - upon removing the first fixing screw a jet of water came out! I had to use a narrow bore hose to suck up all the water between the foam and the side walls.
On your Strikeliner do you have an under-floor bung like the one circled, that drains into the bilge? If so it's probably worth opening that up to check you don't have water between the hull and the floor - this could add significant weight and reduce your max speed, plus cause roll instability.
Hi the picture wont load and where the cables come out the splash well i put a endoscope in both seats at back and there dry i hav a full cover that gos over the splash well and when im not using her the bilge bung isnt in as it is tiped up with bow in the air so no water can get in and when i winch her back on trailer it is out as it tips up lol
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57 minutes ago, Saintly Fish said:
Ok, what about excess weight?
Iv had a camera in all for of the seats and checked the form and its all dry the only thing i have fand is my boat is the only one iv seen where the outboard has been raise up and all the strikeliners iv seen havnt been
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56 minutes ago, Andy135 said:
A quick look on Amazon has thrown this one up. Not used this particular model before but it's an example of the sort of thing that would at least be a cheap (£10) way to work out what revs you're getting from your engine
Hi thank you for the link ill order one and get back to u
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12 hours ago, Saintly Fish said:
Do you have the engine trimmed out correctly, is it electric trim?
Yer i think it ok its go 5 holes and im on the 3rd hole iv tried trimming her and it didnt make a difference lol
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11 hours ago, Geoff said:
Hi, I have only just seen your pics. Nice boat. Geoff.
Thank you it is a nice boat
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10 hours ago, suzook12 said:
Nice looking boat ya got there.....
You dont need to spend a lot for a rev counter.... There are some cheapies on ebay that will give you an idea, you wrap a signal wire around one of the HT leads. Most are programmable for cylinders/2/4 stroke.
It will be impossible to get a good set up without knowing what revs you are getting
Hi thank you for that ill look in to one and go from there
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Just now, Andy135 said:
In which case it would be worth fitting an aftermarket rev counter just so you can work out what revs you're getting and then work out whether a re-prop is the way to go.
Iv run a 11 pitch and got 10 knots and now im running 13 and getting 14knots
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3 minutes ago, Saintly Fish said:
To achieve that though he probably has to run WOT for a while which will drink the fuel.
No he runs 3/4 of a throttle he wont run flat out
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He has a 25l tank same as me and he dose 3/4 of a tank i do a full tank so he is better of than me
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Iv been lookin around and iv seen alot with 30hp and 40hp on them and spoke to sum of the owners and they said there glad they hav the big engine on them
orkney strikeliner 16+
in Boat Owning, Equipment and Maintenance
Posted
Lol we have had sum bass tope and turbot showing the last couple of weeks so not bad down here at mo