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Old 05 November 2006, 14:52   #21
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Well, i work for Barrus (Mariner/Mercury UK). Im lucky enough have a job thats also my hobby!.
I do all the commercial trials for outboards and the pre production work on new bulids and refits etc. Its the MoD that are buying the engines luckliy not me!!!
Thats why there all Mariners and no other makes. MoD only use Mariner and Mercury.
Okay, I get it. Wish I were so lucky!

Isn't the 90 Opti a tad portly for the transom of a 5.4 SR? As I recall it was dramatically over the specified max weight for the transom. It's also outrageously LARGE for its output.
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Old 05 November 2006, 15:19   #22
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Would have thought the MOD would have progressed to 4 strokes by now
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Old 05 November 2006, 15:41   #23
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Okay, I get it. Wish I were so lucky!

Isn't the 90 Opti a tad portly for the transom of a 5.4 SR? As I recall it was dramatically over the specified max weight for the transom. It's also outrageously LARGE for its output.
Well, Avon tell us it will be fine, they have done some clever calculations and have worked out the weight will be ok. The 3 cylinder Opti's (75/90/115hp) are all the same weight so if the 75 is ok then the rest will be fine. But we are taking carfull measurments of how much free board there is on the transom!!
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Old 05 November 2006, 16:33   #24
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Would have thought the MOD would have progressed to 4 strokes by now
Not the last time I used their 5.4s. But they have progressed to a much more sophisticated 5.4. Orange in colour with much better seating and storage etc.

If it was marketed on the civilian market at a decent price it would be a world beater.
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Old 06 November 2006, 06:15   #25
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[QUOTE=ian parkes;172818] Would have thought the MOD would have progressed to 4 strokes by now [/QU

They are not interested in four storkes, to heavy for most of the small boats, and more things to go wrong.
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Old 06 November 2006, 08:42   #26
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Not the last time I used their 5.4s. But they have progressed to a much more sophisticated 5.4. Orange in colour with much better seating and storage etc.

If it was marketed on the civilian market at a decent price it would be a world beater.
PICTURES!
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Old 06 November 2006, 08:46   #27
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PICTURES!
Sorry I haven't any pictures but I will try over the next few months. Don't know if taking pictures of MOD RIBs is against the Official Secrets Act so I'll have to be carefull.
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Old 06 November 2006, 10:53   #28
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Sorry I haven't any pictures but I will try over the next few months. Don't know if taking pictures of MOD RIBs is against the Official Secrets Act so I'll have to be carefull.
Probably not worth getting thrown in the Tower of London for, but I'm sure I'm not the only one who wants a look!
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Old 06 November 2006, 15:22   #29
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If the ancient things the Plymouth Mod Plod were using during Navy Days to spoil our weekend were anything to go by then an autolube 2 stroke will be a novelty
This http://cgi.ebay.co.uk/Inflatable-60-...c mdZViewItem was about the standard , but more patches .

But then again such Rude miserable bastids as those prticular Mod Plod don't deserve anything better .
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Old 05 January 2009, 12:22   #30
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Out of interest (old thread I know!) what were the results like with optis and did you get to try a 115 in the end?
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