We are going with these items now Engine Cummins 8.3 493hp Trasnmission ( ZF 286 A 2.20 ) or ( ZF 325-1 A 2.24) Shaft Aquamet 17 2.0" Genset...
Here some update! And also Thanks to everyone's previous input. I have just had a government authorized surveyor completed the "Survey for...
I have no idea which propeller I have now, they should be the same one that came with the boat from factory since I don't recall that we have...
about to order the engines now Cummins 6.7 473hp, 3300/1150 = 2.87 gear ratio. I want to use ZF because its cheaper but the gear ratio isnt as...
Yea the shipyard mentioned this today. The trim tab we have now hasn't been working for the last 20years, needs new one for sure. The old ones are...
Thanks for the graph analysis! I really want the Cummins QSC but after balancing all cost, workmanship issue, and government certification hassle...
Seems like we my go with the Cummins 6.7 instead. Either 419hp 3000rpm or 473hp 3300rpm. So if DD is 2300/2.0 = 1150 shaft rpm. For the Cummins...
Yes I am trying to understand the height relationship when down angle is used as well as if the new gearbox if have the drop down offset vs the...
Yes exactly. I want to see if the newer Twin Disc or ZF gearbox with down angle can get some extra room vs the old Allison (not knowing if it...
Many thanks! Does these Allison Transmission have any down angle degree?
Engine Model 80627401 SPEC 475HP at 2300RPM Max RPM NL 2500 Just went to check the Bertram today it has Allison Transmission Part No. 23015127...
Yea most likely getting the Cummins now. The generator is at forward stb now. But I want to relocate to aft center if I get a new smaller...
The current gear ratio is 2.0:1. The current shaft should be no problem, but will service it for sure. The Twin Disc dealer here suggests...
I have a 1986 Australian Bertram 42 with original Detroit 6v-92TA 475hp engines. The boat has been with the family since new, and for sentimental...
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