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Post by Mr Stabby on Sept 5, 2024 8:55:33 GMT
Noticed a blizzard of leaves falling from trees today. Think Autumn is well and truly here now.
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Post by Deleted on Sept 5, 2024 9:47:41 GMT
Tis chilly. I woke early, ducks very loud. Went for an early cruise around 6.30. Moored up by 8 for breakfast and a warm. I think stove will be lit in the next few days. Enjoying being back up on the Leicester line, almost emotional.
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Post by on Sept 5, 2024 9:49:53 GMT
It is certainly a bit manky today. Fire is going.
Will drop the launch back in the water as I think it is sealed now.
Still waiting for the impeller and housing to turn up at the local click and collect shop.
One thing I found out while perusing random videos about the Honda 9.9 is that it has a throttle limit screw. Its the same engine as the 15hp but with slightly different carb jetting and a limit on the throttle.
A geyser on an american YouTube channel reckons he got about 13hp by removing the screw. Could be interesting to have a play. Maybe this one will be faster than the Podium launch.
I still don't know if the main jet is fucked. Someone tried to remove it and screwed the screw head but that in itself is not serious it is just ignorance.
It might be fine. Of course the cooked impeller housing is a sign of overheating previously so other issues may turn up.
Basically get the impeller and housing on there then run it for extended time in the water bin and see what happens.
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Post by on Sept 5, 2024 10:08:42 GMT
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Post by dogless on Sept 5, 2024 10:49:21 GMT
Decided to move whilst it was dry and the wind not at its peak.
Back at Market Bosworth with the oven on for Lodge's Farm Shop croissants 🥐
Warmed the boat up nicely.
Trying to avoid the fire as its sunny forecast tomorrow and 15 degrees overnight tonight.
Rog
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Post by on Sept 5, 2024 11:01:41 GMT
I expect the reason the main jet is mullered is because someone was thinking of changing it in order to increase power output. Its a shame but not unusual with carburettors that someone has already been in there.
Might be alright but if it won't run at speed I might buy the 15hp carb and stick it on see what happens. Its the same basic article.
The rather silly 9.9hp story cane about because some places said anything over 10hp is either not allowed or subject to more tax. So manufacturers find they can degrade an existing unit and supply it as a 9.9. Tohatsu do a 9.8 which is quite funny.
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Post by Jim on Sept 5, 2024 11:16:29 GMT
It is certainly a bit manky today. Fire is going. Will drop the launch back in the water as I think it is sealed now. Still waiting for the impeller and housing to turn up at the local click and collect shop. One thing I found out while perusing random videos about the Honda 9.9 is that it has a throttle limit screw. Its the same engine as the 15hp but with slightly different carb jetting and a limit on the throttle. A geyser on an american YouTube channel reckons he got about 13hp by removing the screw. Could be interesting to have a play. Maybe this one will be faster than the Podium launch. I still don't know if the main jet is fucked. Someone tried to remove it and screwed the screw head but that in itself is not serious it is just ignorance. It might be fine. Of course the cooked impeller housing is a sign of overheating previously so other issues may turn up. Basically get the impeller and housing on there then run it for extended time in the water bin and see what happens. great, I thought that was the case, mentioned in another thread. Hope it works, never tried it on my 9.9.
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Post by on Sept 5, 2024 11:30:03 GMT
great, I thought that was the case, mentioned in another thread. Hope it works, never tried it on my 9.9. If your 9.9 is the 'round box' type I believe it is the same as an 8hp. The new type of 15 being the same as the 20 but larger displacement than the 9.9. This one is the old 'square box' type where the 9.9 and 15 are the same engines. I think from memory you have the later round box type.
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Post by Jim on Sept 5, 2024 11:35:09 GMT
great, I thought that was the case, mentioned in another thread. Hope it works, never tried it on my 9.9. If your 9.9 is the 'round box' type I believe it is the same as an 8hp. The new type of 15 being the same as the 20 but larger displacement than the 9.9. This one is the old 'square box' type where the 9.9 and 15 are the same engines. I think from memory you have the later round box type. No we are talking last boat a bf100, square white box. Current is 20hp new style 2010
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Post by on Sept 5, 2024 11:37:36 GMT
Oh yes the BF100. Not sure if that is the zame as the BF9.9A. I think that was a different unit.
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Post by on Sept 5, 2024 11:42:03 GMT
Anyway just been notified the impeller and housing are at the shop. Bit of a trek up there but its always good to walk and its not heavy.
So I will put it back together, take the prop off and give it a good run in the water bin. Interesting to see what happens !
It seems okay but there could be unexpected circumstances here as this has obviously been run very hot. The ignition pack does protect the engine to an extent by limiting revs if it gets too hot and it sounded sweet at idle so I don't think anything seriously bad.
The impeller had melted into the housing which in a way is good because it means the blades hopefully won't be lodged in the powerhead water channels. Fingers crossed.
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Post by on Sept 5, 2024 11:47:51 GMT
The moat likely negative outcome here is water mixing with the oil. That would be a bit rude and need significant extra work. Might be fine. They are known to be durable units but it has been in the dirt with the lid off under floodwater so it hasn't exactly been looked after lately.
It could throw a wobbly.
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Post by Clinton Cool on Sept 5, 2024 12:29:23 GMT
It is certainly a bit manky today. Fire is going. Will drop the launch back in the water as I think it is sealed now. Still waiting for the impeller and housing to turn up at the local click and collect shop. One thing I found out while perusing random videos about the Honda 9.9 is that it has a throttle limit screw. Its the same engine as the 15hp but with slightly different carb jetting and a limit on the throttle. A geyser on an american YouTube channel reckons he got about 13hp by removing the screw. Could be interesting to have a play. Maybe this one will be faster than the Podium launch. I still don't know if the main jet is fucked. Someone tried to remove it and screwed the screw head but that in itself is not serious it is just ignorance. It might be fine. Of course the cooked impeller housing is a sign of overheating previously so other issues may turn up. Basically get the impeller and housing on there then run it for extended time in the water bin and see what happens. Rumour has it that running an engine in a water bin for an extended period of time is bad news. The water quickly warms up by the ejected water to the point where it can provide insufficient cooling. I guess you could mitigate this by leaving a hose running into the bin to constantly refresh the water.
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Post by on Sept 5, 2024 14:00:25 GMT
It is certainly a bit manky today. Fire is going. Will drop the launch back in the water as I think it is sealed now. Still waiting for the impeller and housing to turn up at the local click and collect shop. One thing I found out while perusing random videos about the Honda 9.9 is that it has a throttle limit screw. Its the same engine as the 15hp but with slightly different carb jetting and a limit on the throttle. A geyser on an american YouTube channel reckons he got about 13hp by removing the screw. Could be interesting to have a play. Maybe this one will be faster than the Podium launch. I still don't know if the main jet is fucked. Someone tried to remove it and screwed the screw head but that in itself is not serious it is just ignorance. It might be fine. Of course the cooked impeller housing is a sign of overheating previously so other issues may turn up. Basically get the impeller and housing on there then run it for extended time in the water bin and see what happens. Rumour has it that running an engine in a water bin for an extended period of time is bad news. The water quickly warms up by the ejected water to the point where it can provide insufficient cooling. I guess you could mitigate this by leaving a hose running into the bin to constantly refresh the water. Good point. I am not intending to run it for a long time. Maybe a minute. Its actually just a cut off 20 litre oil drum. Once I have established water flow and that it will fun for a minute to allow the thermostat to operate then the next time it runs will be on the Boat for proper trials. All back together now and it just started raining quite heavily. So I will perform tests later when the rain stops. Quite optimistic that it will work but that carb jet looks quite dodgy. I think if everything else works but there is a main jet problem I might just buy one of the £60 BF15 carbs as a gamble. Might work. They don't have a cheap one for the 9.9 but they are the same carb just with different jets. Worth a go I think. It may be a pointless exercise but it seems to be basically working. I feel sure I can make it so it is basically not working then the questions stop !
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Post by Jim on Sept 5, 2024 14:24:19 GMT
Rumour has it that running an engine in a water bin for an extended period of time is bad news. The water quickly warms up by the ejected water to the point where it can provide insufficient cooling. I guess you could mitigate this by leaving a hose running into the bin to constantly refresh the water. Good point. I am not intending to run it for a long time. Maybe a minute. Its actually just a cut off 20 litre oil drum. Once I have established water flow and that it will fun for a minute to allow the thermostat to operate then the next time it runs will be on the Boat for proper trials. All back together now and it just started raining quite heavily. So I will perform tests later when the rain stops. Quite optimistic that it will work but that carb jet looks quite dodgy. I think if everything else works but there is a main jet problem I might just buy one of the £60 BF15 carbs as a gamble. Might work. They don't have a cheap one for the 9.9 but they are the same carb just with different jets. Worth a go I think. It may be a pointless exercise but it seems to be basically working. I feel sure I can make it so it is basically not working then the questions stop ! If you get it running as a 15hp will it be best to change the prop?
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