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Thread: Interest in new 3 cylinder drag rules..motor alterations and mixing manufacture parts

  1. #31
    Team Member LittleCharger's Avatar
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    Quote Originally Posted by filthy phill View Post
    Well a 9.46 second boat would not embarrassing my little slow boat at all. I have crap 45 top end but gets to it quick. I know 100% she can do 660 feet well under 10 seconds.
    You best check your math...they would put you on the trailer pretty quick
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  2. #32
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    Default Low water pickup

    Name:  SLT-X.2.jpg
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Size:  31.3 KBHere's an answer to your gearcase lift issues: Water pickup low in the skeg leading edge. Get the entire case out of the water.
    Thanks Ron Hill thanked for this post
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  3. #33
    Administrator Ron Hill's Avatar
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    Default Very Cool Low Water Pick Ups

    I've been thinking this way for years. But I wanted to cast the gearcase in stainless so we could make the skeg thin as hell and strong.

    WOW! Very cool!

  4. #34
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    Quote Originally Posted by Tim Kurcz View Post
    Name:  SLT-X.2.jpg
Views: 519
Size:  31.3 KBHere's an answer to your gearcase lift issues: Water pickup low in the skeg leading edge. Get the entire case out of the water.
    how to keep the bearing carrier in that?
    Full solid and exhaust somewhere else?

  5. #35
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    Quote Originally Posted by Powerabout View Post
    how to keep the bearing carrier in that?
    Full solid and exhaust somewhere else?
    The bearing carrier is epoxied in place per Hydroplay's recommendation. Exhaust path is through the (now above water) housing as required by APBA rules. So far, we've had no issues with the carrier coming loose. The same can't be said for clutch dogs and pinions which have proven to be the weak point (for the SST-60 housing). Then again, my powerheads over-deliver, and the driver is very aggressive.

    A slotted 6061-T6 leading edge cuff and nose cone is welded to the gearcase and skeg. Though not skeg thin (a channel is needed for water), it adds strength at a small fraction of bullet frontal area. The cases (two built so far: one SST-60, one Hydroshift) handle better than the plow, and accelerate like crazy. We've not tested top end yet - props are all different. BTW: Ron supplied one of the props!

    BTW: I'd provide more images, but the site is having upload challenges:-(
    Thanks Powerabout, LittleCharger thanked for this post

  6. #36
    Team Member 88workcar's Avatar
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    I humbly invite you to our races sir, the more the merrier.
    Helping folks out around the globe.

  7. #37
    Team Member 88workcar's Avatar
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    Tim! you hacking my post? lol. I miss reading and seeing some of your stuff.
    Helping folks out around the globe.

  8. #38
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    Default River drags

    Quote Originally Posted by 88workcar View Post
    Tim! you hacking my post? lol. I miss reading and seeing some of your stuff.
    If only I lived closer, you'd see me on the course.

    Just trying to be helpful and provide solutions to make your racing faster.

    The new shop is just now ready for work. First up: Six 7-1/2" towers for the 45SS/OMC nitro gearcase. These use Mercury clamps are drilled for the OMC 45 twin and 49/56 triples, but can accept pretty much any power head.

    The race never stops!

  9. #39
    Team Member Roflhat's Avatar
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    That's a really smart looking solution, nice work!

  10. #40
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    Question

    Quote Originally Posted by Hounddog View Post
    The first interest I have is building a 49 cubic inch out of the 3 cylinder 40/50 hp Yamaha block.
    How do you do it?
    Second is matching up a 3 cylinder OMC powerhead with a 40/50/60/70 1:64 gear case.
    What is the best way to do it?
    Cut and weld mids- use an adaptor plate above the gear case- use a custom powerhead base plate on the Mercury mid?
    Any pictures?
    Thanks
    NOW THE MOTOR ON THIS BOAT IS INTERESTING!!
    Look at the horsepower listed. 75 HP

    http://www.screamandfly.com/showthre...th-Yamaha-50hp

    The mid is a 50 hp short shaft. Did Hydro Tec rework a 52 cubic inch to fit or did they built it out of a 42 cubic inch or is it Fake News in the ad??

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