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Thread: TRS speedmaster II drive

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    TRS speedmaster II drive

    I thought some of you might enjoy seeing a few side by side pictures of a regular TRS and a speedmaster TRS - both are #IIs. You will see some differences in the cavitation plate depth, overall depth, drive length, and especially the hub diameter. The prop shafts are also different - hard to find props for the speedmaster. The upper is the same on both drives. Check out the bullet on the drive. Bill

    1971 Donzi 18' 2+3
    1985 Eliminator 23' Daytona Offshore - Kevlar hull
    1988 23' Donzi CC F-23 with 250HP EFI Mercury OB
    1989 28' Team Warlock Offshore - single 548CID/600HP
    1990 23' Warlock Offshore - single 525HP
    Bill from Denison, TX - Lake Texoma

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    That's really interesting, Bill. The bullet shape really is pronounced. Do you suppose they'd all be that way if it weren't for accomodating through the hub exhaust? I wonder if my performance would suffer by throwing on one of those speedmaster lowers (even if I could find one)? I would imagine it would since it's so much deeper in the water.

    Anyway, cool side by side pics! Thanks!




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    Quote Originally Posted by HOWARD O View Post
    That's really interesting, Bill. The bullet shape really is pronounced. Do you suppose they'd all be that way if it weren't for accomodating through the hub exhaust? I wonder if my performance would suffer by throwing on one of those speedmaster lowers (even if I could find one)? I would imagine it would since it's so much deeper in the water.

    Anyway, cool side by side pics! Thanks!
    Hopefully, I will be able to report the speed difference since I am installing one on my 1979 Martini. It will not be comparing apples to apples though, since I will also be running a completely different prop. It should be faster with the reduced drag. Bill

    1971 Donzi 18' 2+3
    1985 Eliminator 23' Daytona Offshore - Kevlar hull
    1988 23' Donzi CC F-23 with 250HP EFI Mercury OB
    1989 28' Team Warlock Offshore - single 548CID/600HP
    1990 23' Warlock Offshore - single 525HP
    Bill from Denison, TX - Lake Texoma

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    That is a neat pic.
    2001 35 Fountain Lightning w500 EFI's
    1973 X-18 - Merc 383 Magnum
    1974 Chris Craft Roamer with 1271 TI's

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    Very cool. As I recall the SSii bolts right up to the TRS upper. Deeper but more hydrodynamic. Will be interesting to see if it is faster or slower. Tough to get parts and props.
    Cheers,
    Pismo
    1996 22 Classic
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    25" Mirage Plus
    74.5mph best @ 5050rpm GPS (Speedo said 80)
    27" Labbed Mirage Plus
    75.5mph best @ 4800rpm GPS (Speedo said 82)

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    Very cool side by side. That is an amazingly long bullet.
    1972 16 OB - C16B-63 - "Surface Tension" Resto Project
    1974 16 OB - DMR16106017-B - "The Mule"

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    Quote Originally Posted by Pismo View Post
    Very cool. As I recall the SSii bolts right up to the TRS upper. Deeper but more hydrodynamic. Will be interesting to see if it is faster or slower. Tough to get parts and props.
    I think you are correct on all counts. I can't believe it would be anything but faster with such a reduction in the mass of the hub having to punch a hole through the water. Unfortunately, the prop shaft calls for old school 3 blade props. I actually thought about having the shaft redone to a conventional 1 1/4" splined shaft, but the first man I talked to about the idea nixed it saying the strength of the metal would be lost. Still thinking about the idea, though. Bill

    1971 Donzi 18' 2+3
    1985 Eliminator 23' Daytona Offshore - Kevlar hull
    1988 23' Donzi CC F-23 with 250HP EFI Mercury OB
    1989 28' Team Warlock Offshore - single 548CID/600HP
    1990 23' Warlock Offshore - single 525HP
    Bill from Denison, TX - Lake Texoma

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    Do you know what pitch prop you will need?

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    Quote Originally Posted by blackboat View Post
    Do you know what pitch prop you will need?
    Since the outdrive is a 1.5 ratio and right now I only have a 330HP engine, I am thinking no more than a 23P pitch RH. I talked to a man in Florida last week who only had a 28P. Do you have some II speedmaster props? Bill

    1971 Donzi 18' 2+3
    1985 Eliminator 23' Daytona Offshore - Kevlar hull
    1988 23' Donzi CC F-23 with 250HP EFI Mercury OB
    1989 28' Team Warlock Offshore - single 548CID/600HP
    1990 23' Warlock Offshore - single 525HP
    Bill from Denison, TX - Lake Texoma

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    Mine is running a 24 pitch Turbo1 with the 330. Not apples to apples though, I know.




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    I have a 3 blade NIBRAL offshore cleaver which should fit that 1 1/4 shaft with 19 splines. Right hand. You are welcome to try it out when ready.
    It is a 16 x 23 pitch.

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    Quote Originally Posted by blackboat View Post
    I have a 3 blade NIBRAL offshore cleaver which should fit that 1 1/4 shaft with 19 splines. Right hand. You are welcome to try it out when ready.
    It is a 16 x 23 pitch.
    Wow! If it is the one with a 4" long hub and 1 3/8" hole with about 2" of 1 1/4" 19 splined shaft, it is the exact one I would love to try. I would pay for it if this all sounds like what you have. Here is my email address. Thanks, Bill

    Dgill25960@aol.com

    1971 Donzi 18' 2+3
    1985 Eliminator 23' Daytona Offshore - Kevlar hull
    1988 23' Donzi CC F-23 with 250HP EFI Mercury OB
    1989 28' Team Warlock Offshore - single 548CID/600HP
    1990 23' Warlock Offshore - single 525HP
    Bill from Denison, TX - Lake Texoma

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    Bill, Sounds right! I will check it when I get home from work.

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    Quote Originally Posted by blackboat View Post
    Bill, Sounds right! I will check it when I get home from work.
    Hi Mike,
    I want to thank you for sending me a 3 blade Nibral cleaver 23P prop that will likely work without modifications as per our emails. I just got in the 4 blade prop that I was hoping to modify, but apparently the man in Florida was correct. It is massively larger than I anticipated and there is no way I will be able to take an inch or more off the leading hub or I will be into the blades. It is a work of art and meant for a IIIa or IV speedmaster with the longer prop shaft. This prop weighs an amazing 17.6lbs !! After seeing it, I realize why it retailed for $2266.00 back when it was made. Apparently this one was never mounted or used. Thanks again, Bill

    1971 Donzi 18' 2+3
    1985 Eliminator 23' Daytona Offshore - Kevlar hull
    1988 23' Donzi CC F-23 with 250HP EFI Mercury OB
    1989 28' Team Warlock Offshore - single 548CID/600HP
    1990 23' Warlock Offshore - single 525HP
    Bill from Denison, TX - Lake Texoma

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    These propellers...

    are making...

    me thirsty.
    "I don't have time to get into it, but he went through a lot." -Pulp Fiction

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