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Old 25 May 2011, 15:44   #11
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You have to remember the engine does not stop immediatly and has a heavy flywheel which containes energy and therefore will take time so slow down, anything the propeller touches will therefore sustain damage to some degree
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Old 25 May 2011, 15:47   #12
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You have to remember the engine does not stop immediatly and has a heavy flywheel which containes energy and therefore will take time so slow down, anything the propeller touches will therefore sustain damage to some degree
That confirms my thoughts then . i have a polypropelene propguard but am in two minds on fittting it , it also means removing my doel fins .
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Old 25 May 2011, 16:55   #13
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That confirms my thoughts then . i have a polypropelene propguard but am in two minds on fittting it , it also means removing my doel fins .
Am i being cautious ,overcautious, or downright paranoid
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Old 19 June 2011, 16:21   #14
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Ok,, so i bought one ..
Tried the sib on friday and went from tewksbury to gloucester ,, around 22 miles.. and used a full25 litres to get there (one way) Couldnt believe it ,, when i got to gloucester lock i had to fill up again to come back ,, i couldnt wait to get back to take the sodding thing off , it made the boat handle like crap and actually increased fuel consumption by 50% .
I took it off this morning and put the doel fins back on and it all handled great again ,,, never use one again!
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Old 19 June 2011, 18:35   #15
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Timo - Very interesting thread, confirms my long standing suspicions!!

Polwart - Many thanks for posting the link to the RYA doc. London CG have in the past asked me to provide 40 safety boats with prop guards for some of our events and I had to laugh , getting 40 safety boats is hard enough!!!

It's nice to see the RYA taking a risk based approach in it's advice rather than universal precautions.

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Old 20 June 2011, 16:38   #16
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Apparently there's just been one of those ridiculous American court cases in whiich someone who managed to get themselves injured by a propellor sued anyone and everyone they could think of and the jury decided to find the propellor manufacturer at fault for designing a propellor without a guard - and as the only company involved and hence having the deepest pockets they got hit for a few million. Which risks meaning it'll get pretty hard to buy a prop WITHOUT a guard in the not-too-distant future unless a blast of common sense gets inserted from somewhere.... and there don't seem to be many obvious sources of that... :-(
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