https://www.fishing.net.nz/forum/ Sat, 06 Jun 2026 07:04:36 +0000 Tue, 07 Aug 2012 13:16:22 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.01 360 https://www.fishing.net.nz/forum/RSS_post_feed.asp?TID=80591 https://www.fishing.net.nz/forum/forum_images/web_wiz_forums.png https://www.fishing.net.nz/forum/ https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1160449&title=boat-option-questions#1160449 Author: alanimal
Subject: 80591
Posted: 07 Aug 2012 at 1:16pm

well am now a happy owner of a Buccaneer 735 Sportsman (the one in last boating nz magazine). only done one overnighter so far but is very comfortable and quite an upgrade from the Fi-Glass lightning. Awesome boats - so much room!!!]]> Tue, 07 Aug 2012 13:16:22 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1160449&title=boat-option-questions#1160449 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155868&title=boat-option-questions#1155868 Author: Moki Marko
Subject: 80591
Posted: 27 Jul 2012 at 4:28pm

yes - the response I have had is that the yamaha is a bigger engine so it burns more fuel. Even tho its doing the same amount of work I guess the combustion chamber is a certain size and they can only lean out the mixture so much.
Big issue I have noticed too is that an 8m boat is proportionally way bigger than a 7m boat - a 225 just isn't big enough on an 8m boat, especially when owners insist on running the motors at lower than optimum revs to try and save a few cents on gas - it;s counter productive.
]]> Fri, 27 Jul 2012 16:28:31 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155868&title=boat-option-questions#1155868 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155437&title=boat-option-questions#1155437 Author: Tagit
Subject: 80591
Posted: 26 Jul 2012 at 3:25pm

Sorry BS, had forgotten that . Blame it on old age. Just doing my mental maths exercise on fuel burn etc. Your figures look close, but I would have expected maybe 1 or 2 mph on that hull and maybe a couple of lph less. Fine tuning only, but that extra hole might be the final tweak. Doesn't seem though that the lower hp Yam 4.2's have made the same gains in fuel burn that Honda (and possibly Suzuki?) have made. Only got very incidental data on this so far, but is interesting to keep an eye on.]]> Thu, 26 Jul 2012 15:25:40 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155437&title=boat-option-questions#1155437 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155429&title=boat-option-questions#1155429 Author: bluesignature
Subject: 80591
Posted: 26 Jul 2012 at 3:04pm

4.2l 225hp yamaha tagit you helped with setting intial engine hieght you said lower one hole but thought 2 would be the answer we had allready gone down 2so left it as it was so may now try going up 1 as have more grip]]> Thu, 26 Jul 2012 15:04:28 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155429&title=boat-option-questions#1155429 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155306&title=boat-option-questions#1155306 Author: Tagit
Subject: 80591
Posted: 26 Jul 2012 at 9:40am

What engine size BS?]]> Thu, 26 Jul 2012 09:40:40 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155306&title=boat-option-questions#1155306 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155277&title=boat-option-questions#1155277 Author: bluesignature
Subject: 80591
Posted: 26 Jul 2012 at 8:14am

you could try asking boat city bossco about expected fuel economy as they are agents for southern and mercury.i had the chioce of merc or yamaha through them and went with yamaha.the biggest challenge with these 4.2 yamahas seems to be getting them propped correctly we had too much prop slip with the yamaha props (seem to recall something in a recent magazine boat boat test that made me think they had the same problem).did some prop testing last week on lake dunstan (220m above sea level) we were getting better perfopmance with amerc prop revolution 4 .however we have not run it in sea water yet and with more grip i think the motor will need to go up a hole.theese motors have a differnt gear ratio so you need less pitch on your prop.as a guide on the lake we were doing 29mph at 3800rpm burning 34.8l hr boat was well loaded full of fuel 2 men and 300 l water in fish bins to duplicate load so it should do better on saltwater at sea level boat 716 southern]]> Thu, 26 Jul 2012 08:14:20 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155277&title=boat-option-questions#1155277 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155194&title=boat-option-questions#1155194 Author: Bossco
Subject: 80591
Posted: 25 Jul 2012 at 10:11pm

http://www.southern-lazer.co.nz/Southern%20XP756_May11_boatingnz.pdf

Not bad at 3500 though and it is a freshwater test.

But looks like the Suzuki's have a pretty significant edge in that 3000-4000 rpm bracket and they claim even better figures with new tech this year.

http://www.stabicraft.com/Documents/BoatTests/759SCSPORT/300Hpshoot-Outpropeller.pdf


]]> Wed, 25 Jul 2012 22:11:40 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155194&title=boat-option-questions#1155194 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155116&title=boat-option-questions#1155116 Author: Tagit
Subject: 80591
Posted: 25 Jul 2012 at 8:15pm

Those figures for the 300 on the SS 7.5 sound pretty horrible to me. Fuel burn looks OKish, but only 30knts? As long as the boat has plenty of power and isn't struggling, I don't believe that the difference between 250 and 300hp in fuel burn would be very much at the same speeds. With the 8m deep V boat however I would be tending towards the 300 just because it is a better power match for that size boat.]]> Wed, 25 Jul 2012 20:15:39 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155116&title=boat-option-questions#1155116 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155051&title=boat-option-questions#1155051 Author: Bossco
Subject: 80591
Posted: 25 Jul 2012 at 6:49pm

That's pretty good. Read a review saying that the yam 300 burns 39lph/30knots at 4000rpm on a Southern 7.5.

Will have to weigh up how a 300hp cruising at a lower rpm will compare economy wise to the Honda 250.



]]> Wed, 25 Jul 2012 18:49:30 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1155051&title=boat-option-questions#1155051 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1154929&title=boat-option-questions#1154929 Author: harryh
Subject: 80591
Posted: 25 Jul 2012 at 2:40pm

Was talking to Fishermans Friend at the Bounty Hunter and his new Extreme 850 with the new 300 Lean Burn Suzi with optional gearbox rotation, I think was burning 33lph at around 4000rpm doing 29mph, I think, he may be able to confirm.]]> Wed, 25 Jul 2012 14:40:13 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=80591&PID=1154929&title=boat-option-questions#1154929