User Tag List

Page 1 of 2 1 2 LastLast
Results 1 to 15 of 21
  1. #1
    Join Date
    Sep 2015
    Location
    ∀ʇOsƎuNᴉW
    Posts
    1,866
    Thanks (Given)
    9
    Thanks (Received)
    56
    Likes (Given)
    83
    Likes (Received)
    262
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Standard Midsection VS Offshore Midsection

    If your not building a boat to go beating across the rough ocean and circuit racing. Is there any benefit to even own an offshore midsection.
    Saying you are using 1 piece adapter plates and solid mounts for both comparisons.
    Maybe you want to do a couple of 1000' drags a year and mostly lake and river runs and play time the rest of the time.
    I have both and the offshore is so damn heavy compared to a regular midsection. I would think that would actually slow you down in the 1000' and it definitely will press your transom down in the water an extra 1" or so.
    Instead of the typical its a stronger unit comment and where the exhaust exits. I don't really recall anyone that has broken their regular midsection.
    I know you have twist and flexing going on, but like i said not a circuit racer or ocean racer. What are the odds of it actually breaking? Slim to none? 20%?
    If I don't ask any questions, I'll never learn anything.

  2. Thanks patchesII thanked for this post
    Likes SUNKIST liked this post
  3. #2
    Join Date
    Jun 2011
    Location
    Australia
    Posts
    113
    Thanks (Given)
    0
    Thanks (Received)
    4
    Likes (Given)
    3
    Likes (Received)
    23
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    No sure if this is relevant or not, but I was once following a 2.5 powered lightweight on flat water at around 85mph. the 2.5 through a blade (I seen the splash as it landed), then seconds later the gearbox was launched off due to the vibration. Unfortunately I did not see the failure point of the gearbox (studs, casing or the mid itself) as we were racing and the boat was recovered and left before we returned to the dock. I am not sure if the offshore mid is any stronger, or just the clamp/brackets etc., either way, it shows that failures can happen on flat water under these circumstances. Anyone else shed any light on 2.5s throwing gearboxes off the mid after propeller failures, and whether the offshore mid is beefed up to prevent such failures?

  4. #3
    Join Date
    Jun 2008
    Location
    Sardis Lake Oklahoma
    Posts
    604
    Thanks (Given)
    67
    Thanks (Received)
    26
    Likes (Given)
    880
    Likes (Received)
    179
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I've run the early single ram fishin stuff my whole life with no problems. Ran over Stumps, ran N20 and totally abused them with no mid problems what so ever! Can't say about all the other stuff bent and broken!
    JS
    WillySteve Hendricks



    20XDC Bullet/Modified Merc 260
    295TF Charger/ProMax 225x-Sold!
    '83-20' Contender Pickle Fork/Merc 2.4 ModVP BridgePort EFI-Sold!
    '85-18' Stratus STV/Merc Hi-Po 2.4 EFI-Sold!
    Freedom 240 DLX Fisher Toon/Merc 115

    10' Cougar Cub/Merc 25HP On The Bottle!
    18" Home Made Tunnel/OS .021XM Outboard on 50% Nitro and Expansion Chamber

  5. #4
    Join Date
    Dec 2001
    Posts
    4,816
    Thanks (Given)
    0
    Thanks (Received)
    10
    Likes (Given)
    0
    Likes (Received)
    72
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Sand cast.... diecast. When Merc makes a few it's sand cast ... a lots of them diecast. Sand is thicker... not sure of how much stronger, maybe less brittle.

  6. #5
    Join Date
    Sep 2015
    Location
    ∀ʇOsƎuNᴉW
    Posts
    1,866
    Thanks (Given)
    9
    Thanks (Received)
    56
    Likes (Given)
    83
    Likes (Received)
    262
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Good to know. So basically if your just a weekend warrior on a lake, having a standard mid might be a weight advantage. That was what i was thinking too. Besides if your going all out then there is usually a safety crew there to save you and catastrophic failure doesn't often seem to be in the midsection area.
    If I don't ask any questions, I'll never learn anything.

  7. #6
    Join Date
    Jun 2008
    Location
    Sardis Lake Oklahoma
    Posts
    604
    Thanks (Given)
    67
    Thanks (Received)
    26
    Likes (Given)
    880
    Likes (Received)
    179
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Dave S View Post
    Sand cast.... diecast. When Merc makes a few it's sand cast ... a lots of them diecast. Sand is thicker... not sure of how much stronger, maybe less brittle.
    How does that affect the mid if they're the same between OS and Fishing? Do we know for sure they are different?
    WillySteve Hendricks



    20XDC Bullet/Modified Merc 260
    295TF Charger/ProMax 225x-Sold!
    '83-20' Contender Pickle Fork/Merc 2.4 ModVP BridgePort EFI-Sold!
    '85-18' Stratus STV/Merc Hi-Po 2.4 EFI-Sold!
    Freedom 240 DLX Fisher Toon/Merc 115

    10' Cougar Cub/Merc 25HP On The Bottle!
    18" Home Made Tunnel/OS .021XM Outboard on 50% Nitro and Expansion Chamber

  8. #7
    Join Date
    Jul 2013
    Location
    California
    Posts
    1,123
    Thanks (Given)
    6
    Thanks (Received)
    13
    Likes (Given)
    13
    Likes (Received)
    104
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I've seen a couple of bass mids break in two. Break right below the exhaust plate bolts.
    Boat was not babied but not abused either. Just wake crossing.

    Thinking it it also depends on how fast the boat is and what kind of horsepower relating to the loads being put on the mid.

  9. Likes RIVERRUMMER 70 liked this post
  10. #8
    Join Date
    Sep 2015
    Location
    ∀ʇOsƎuNᴉW
    Posts
    1,866
    Thanks (Given)
    9
    Thanks (Received)
    56
    Likes (Given)
    83
    Likes (Received)
    262
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    nothing crazy just something like an ultra light boat with 350hp. that should do it.
    If I don't ask any questions, I'll never learn anything.

  11. #9
    Join Date
    May 2009
    Location
    Ormond Beach, Florida
    Posts
    440
    Thanks (Given)
    21
    Thanks (Received)
    48
    Likes (Given)
    101
    Likes (Received)
    195
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Are we talking a 3L mid or an older one? I believe the 3L “bass” mid is significantly stronger than the older “bass” mids, at least that’s what I was told by Mercury last year.
    Mark

  12. #10
    Join Date
    Sep 2015
    Location
    ∀ʇOsƎuNᴉW
    Posts
    1,866
    Thanks (Given)
    9
    Thanks (Received)
    56
    Likes (Given)
    83
    Likes (Received)
    262
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    For me I'm just talking about 2.4 L stuff maybe older 2.5 stuff too
    If I don't ask any questions, I'll never learn anything.

  13. #11
    Join Date
    Mar 2010
    Location
    houston, tx
    Posts
    1,306
    Thanks (Given)
    31
    Thanks (Received)
    43
    Likes (Given)
    185
    Likes (Received)
    192
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Krazymaan View Post
    nothing crazy just something like an ultra light boat with 350hp. that should do it.
    Ultra light boat with “only” 350 hp, I wouldn’t do that without a 15” offshore mid but that’s just me.

  14. Likes WillySteve, RIVERRUMMER 70 liked this post
  15. #12
    Join Date
    Dec 2011
    Location
    united states
    Posts
    387
    Thanks (Given)
    0
    Thanks (Received)
    6
    Likes (Given)
    5
    Likes (Received)
    19
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I have always had a bass mid on my 21' Superboat. This year I switched to a late model smoothback o/s mid. And there is a huge difference. If you put a bass mid and an offshore mid side by side and looked at them from above standing the mids straight up with no adapter plates you'll realize the offshore is at least twice as strong, if not three times as strong. Much stronger mid all around. It looks badass and it sounds badass too. But with that aside I believe it's much stronger. If you are putting a motor together you might as well put an o/s mid on it. It's a lot cheaper to do it now then to realize you need one or to have something happen to the bass mid. I only use my boat as pleasure and I don't drive the boat overly hard. Just my opinion.

  16. Likes RIVERRUMMER 70 liked this post
  17. #13
    Join Date
    Sep 2015
    Location
    ∀ʇOsƎuNᴉW
    Posts
    1,866
    Thanks (Given)
    9
    Thanks (Received)
    56
    Likes (Given)
    83
    Likes (Received)
    262
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    I have regular mids, bass mids, a ridge back and a 280 offshore and a custom made lightweight offshore mid. I was just thinking about how many times i've heard of a regular mid break apart upon regular/heavy use. None really that i know of. Not including home made bass holes, drilled mid's, add a snout mids or any other home brewed slice or drilled into mids. Those are alll susceptible of failure for obvious reasons. Thats why i'm not really interested in those ones and thats why i am interested in peoples experiences with regular mids and did you ever break one.
    If I don't ask any questions, I'll never learn anything.

  18. #14
    Join Date
    Jul 2013
    Location
    California
    Posts
    1,123
    Thanks (Given)
    6
    Thanks (Received)
    13
    Likes (Given)
    13
    Likes (Received)
    104
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The "regular" mid and the "bass" mid are the same mids. The bass mid is drilled for exhaust relief at the factory and uses solid mounts.

    Keep in mind that mid was engineered and designed in the 80's for 200 horsepower engines. It's been used by the factory up to 280 horsepower. Putting 350 horsepower to it I'm thinking is going beyond whatever engineering safety factors it was designed with. Don't get me wrong as I'm sure it will work but it's going to break easier and sooner with the high horsepower.

    Look at the 15" swivel bracket that is being used on 3.0 liter engines and 400 four strokes now. They're breaking pretty regularly. It was originally engineered for a 2.5 liter.

  19. Likes RIVERRUMMER 70 liked this post
  20. #15
    Join Date
    Apr 2001
    Location
    Michigan
    Posts
    12,384
    Thanks (Given)
    57
    Thanks (Received)
    142
    Likes (Given)
    1948
    Likes (Received)
    1165
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I've broke a half dozen fishing cans. Mostly on my hst. One cracked by a lower mount, the rest right under the power head studs. I'm rather fond of the boats cornering ability though.

  21. Likes David - WI liked this post
Page 1 of 2 1 2 LastLast

Similar Threads

  1. alien cowl on a standard midsection
    By TEXAS20225 in forum Technical Discussion
    Replies: 0
    Last Post: 04-17-2013, 06:46 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Strongback trailers - horizontal banner