Good morning all!
This may be a Bob question but, I'm looking for the actual factory installed propeller size for the subject vessel running 454 (350hp) engines. Not sure about the gears either, but looks like the literature supports this vessel as having 2.0:1 gears, no nameplate data on the gears located.
I've attached the size and numbers that are currently installed, they are three bladed. I have to change the propellers as galvanic corrosion has gotten the best of them. Looking for anyone with the same boat (model) that has done any changes in the size/pitch/blade count of their propeller and what your feedback is. Not looking for performance numbers, not looking to "go fast", just curious of general comments about the change and some of the reasons that led you to changing your propellers. Some folks have gone to 4 bladed, but haven't really heard why.
Thanks in advance for any information provided.
Scott
1988 10M Mid Cabin Propeller Size
Moderators: BeaconMarineBob, Moderator, BeaconMarineDon
1988 10M Mid Cabin Propeller Size
- Attachments
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- Prop size 2.jpg (41.79 KiB) Viewed 3469 times
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- Prop size.jpg (51.07 KiB) Viewed 3469 times
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- Nameplate.jpg (81.08 KiB) Viewed 3469 times
"Speakeasy"
1988 Intl 10 Meter Mid-Cabin Exp
Model 340
Twin 454 (350hp) Crusaders
1.5:1 Gearboxes
Jacksonville, FL
1988 Intl 10 Meter Mid-Cabin Exp
Model 340
Twin 454 (350hp) Crusaders
1.5:1 Gearboxes
Jacksonville, FL
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Re: 1988 10M Mid Cabin Propeller Size
Pretty sure the mid-cabin is 1.5 to 1 gears.
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat
Re: 1988 10M Mid Cabin Propeller Size
From what I read, the only mid cabin with 1.5:1 is the 340 model. The manual could be wrong though, or I could be misreading it.
"Speakeasy"
1988 Intl 10 Meter Mid-Cabin Exp
Model 340
Twin 454 (350hp) Crusaders
1.5:1 Gearboxes
Jacksonville, FL
1988 Intl 10 Meter Mid-Cabin Exp
Model 340
Twin 454 (350hp) Crusaders
1.5:1 Gearboxes
Jacksonville, FL
Re: 1988 10M Mid Cabin Propeller Size
I have the same year mid cabin and it came with 1:52:1 VD transmissions. I have a video on YouTube when I first swapped the factory 3 blades over to 4 blades. The four blades are a little smoother AND I wanted an extra set on board so it was an easy decision.
https://youtu.be/qcC2b_NSFIw
I’ve since repowered but have years of reference videos at speed if you need any data.
Bob
https://youtu.be/qcC2b_NSFIw
I’ve since repowered but have years of reference videos at speed if you need any data.
Bob
1988 10m mid cabin
Re: 1988 10M Mid Cabin Propeller Size
Forgot, model 340 is the correct designation for a mid cabin. That’s not widely known, the important thing you need to know is 10m Mid Cabin vs 10m Express (totally different model in several areas but same hull).
Bob
Bob
1988 10m mid cabin
Re: 1988 10M Mid Cabin Propeller Size
Bob, many thanks! I would like to take you up on the information offer. Been looking for some comps for a while. You are correct and after “re-reading” my own owner’s manual, I do have the 10 meter 340 mid-cabin express. Boy I tell ya, Trojan could have done a different scheme with their hull models…talk about confusing some of us!
I’n any case, would be interested in reading more about your 4 blade props I.e. size, pitch, make etc…
Thanks in advance!
Scott
"Speakeasy"
1988 Intl 10 Meter Mid-Cabin Exp
Model 340
Twin 454 (350hp) Crusaders
1.5:1 Gearboxes
Jacksonville, FL
1988 Intl 10 Meter Mid-Cabin Exp
Model 340
Twin 454 (350hp) Crusaders
1.5:1 Gearboxes
Jacksonville, FL
Re: 1988 10M Mid Cabin Propeller Size
"Speakeasy"
1988 Intl 10 Meter Mid-Cabin Exp
Model 340
Twin 454 (350hp) Crusaders
1.5:1 Gearboxes
Jacksonville, FL
1988 Intl 10 Meter Mid-Cabin Exp
Model 340
Twin 454 (350hp) Crusaders
1.5:1 Gearboxes
Jacksonville, FL