Help - Transom O Ring 274 Hamilton

Discussion in 'Metal Boat Building' started by Oran, Apr 11, 2004.

  1. Oran
    Joined: Apr 2004
    Posts: 2
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Isle of Man- Irish Sea

    Oran New Member

    Help - Transom O Ring 274 Hamilton


    I just spent All day today trying to fit a hamilton 274 jet to an alluminium hulled RIB. We got it in OK despite the manual's instructions. However getting the flange , o ring and jet to play ball has stumped us. We tried by hand, as per manual using vegetable oil as lube, then we used long stainless steel bolts and started tightening them down. It still did not do the job and in fact we snapped the bolts to remove them. Any body any experience with Hamilton's transom flange's and o ring seals.

  2. bobber
    Joined: Apr 2004
    Posts: 69
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: TN, US

    bobber Junior Member

    Try contacting ocean dynamics, in st davids, Wales. They specialise in building custom aluminium RIBs for commercial uses, and utilise Jet drives in most of their boats. as far as i remember, they use hamilton drives. however it has been a few years since i have been up there,
    SA62 6RJ U.K.
    TEL: +44 (0)1437 721390 FAX: +44 (0)1437 720747
    e-mail link to:
  3. kapnD
    Joined: Jan 2003
    Posts: 848
    Likes: 132, Points: 43, Legacy Rep: 40
    Location: hawaii, usa

    kapnD Senior Member

    snapped bolts

    Stainless bolts are notorious for galling when tightened without proper lubrication. A liberal application of anti-sieze to the bolt threads before assembly will work wonders. Chances are that you never even got the bolts tight, they just felt tight when they galled--and you were lucky they broke off, sawing them off is no fun. gool luck!

  4. Tim_Hastie
    Joined: May 2004
    Posts: 55
    Likes: 1, Points: 0, Legacy Rep: 14
    Location: Canada

    Tim_Hastie Junior Member

    I have put many jets in boats. is it a new boat...? If not check that your transom is flush older boats can be nasty for that after you cut out the jet whole. make sure your transom is at the right angle 5 degree (if your block is 5 degree) have you had to cut any material off the intake block ? if so where. The aft portion of the block should not be touched. The aft edge of the jet block should be in line with your bottom corner of the transom. Is it single or twin ? If all these things are good then you should be ok. If these things are good and it still will not go in then call your rep. I deal with Jastrum Eng. in st.cathrines Ontario. Or just call hamilton.

Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.