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Thread: Spirit of Texas Drag Hydro

  1. #1
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    Default Spirit of Texas Drag Hydro

    Introducing my December 2012+ build.

    40" Drag Hydro twin engine, 12S1P

    Since 1975, when I would cycle my dragster 90mins from home to watch fire breathing blown V8 Hydros race around buoys on the big river, Ive been obsessed by power boats.
    Awed to see drag hydros perform.. Youtube or live, they're a true heart pumper !

    A colleague in Qld, Au took the challenge to build a 40" version of this hull
    Diecast model here http://www.diecast.org/diecast98/htm.../reviewpix.htm



    and came back with this




    more to follow.
    DocW
    Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
    @ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @

  2. #2
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    2 x1/4 struts 78mm between centers, center mount extended rudder


    shaft and motor placed for positions relative for cutouts


    cutouts marked and in process of cutting
    Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
    @ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @

  3. #3
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    man! that is going to be one cool build! good luck, ill be watching this!
    EYEKANDYGRAPHICS

    www.rclipos.com

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    Default




  5. #5
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    Shaft entry done
    Motors positioned for mount tacking with 15 min epoxy
    Itchy "Fairy" dust sprinkles everywhere


    Outers positioned ready for tacking


    slurry of 15min and floor sweepings for tacking down


    the job done .. side rails to be laminated in CF..
    Last edited by drwayne; 12-29-2012 at 05:34 AM.
    Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
    @ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @

  6. #6
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  7. #7
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    I have Leo 5692/730 on 12S1P for this build.
    The engine mounts can have the motor plate exchanged to suit a pair Neu 1527/1D(2300) 25mm hole centers .. it'll swap them over and run on 6S2P shared, once ride and attitude is all sorted .


    Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
    @ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @

  8. #8
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    Looks great! Are you building this for SAW?

  9. #9
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    I'm sure ill hear this one in my bedroom when you let it loose, you done yet?? Ready for maiden?
    Visit www.customcfparts.com | Custom Boat Building | Custom Carbon Fiber Parts | Custom Graphics | LMT Premium Dealer | MGM Premium Dealer | YouTube | Facebook
    "Follow someone's footsteps and you will always be a step behind"

  10. #10
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    I build for fun, fast fun.
    SAW depends on whether this hull ( 2nd? from mold ).. is stable at the speeds intended.
    Stay tuned !

    @Kent. You'll hear this spool up from your place, mate


    3mm copper rails as charge carriers on the cap bank... soon to be covered in epoxy then heat shrink'ed.
    Last edited by drwayne; 12-31-2012 at 12:08 AM.
    Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
    @ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @

  11. #11
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    Wow, nice Doc, you too are going to see data dumps like mine.
    Can't wait to see it run!

  12. #12
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    Someone has sticky fingers... Groovy doc. A couple of Conolly v8's would look extremely sweet in that puppy too... and sound KILLER!. Awsome, can't wait to see it. Totally my kind of crazy. By the way nice soldering...... (but your glasswork sucks!!! Floor sweepings!!!!?? Really???? DOC....WE GOTTA TALK.... he he he ). :-)
    Im confused..... no...wait...mabee im not?

  13. #13
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    Quote Originally Posted by Richie the shipwright View Post
    Someone has sticky fingers... Groovy doc. A couple of Conolly v8's would look extremely sweet in that puppy too... and sound KILLER!. Awsome, can't wait to see it. Totally my kind of crazy. By the way nice soldering...... (but your glasswork sucks!!! Floor sweepings!!!!?? Really???? DOC....WE GOTTA TALK.... he he he ). :-)
    The smallest Conley V8 now is a 6.09cu in (110cc) monster..the boat would need be 1/4 to fit it in !
    This hull is a bees whisker under 1/6 scale
    hahaha yeah, I did research Conleys a little ..... :)

    This will have a different but equally exciting tone from it's twin 'big blocks' howling down the straight !

    Floor sweepings.. an amalgam of Carbon and kevlar offcuts all masticated to form a sticky mass.. beats 5 min epoxy .. wont release if it gets warm. !!!
    Thanks for the compliment ( I think )
    Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
    @ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @

  14. #14
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    Thumbs up

    Ok.... floor sweepings....any SAWdust in there?? I hear that makes em go faster...? Deffinately going to scare a few children and scalp a few carp.... ( the boat dude... Not your glasswork..)
    Im confused..... no...wait...mabee im not?

  15. #15
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    Pretty cool doc...

  16. #16
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    Spent some time with turn fin mount.... mount is linearly adjustable underhull... fin adjustable linearly on mount.
    Due the counter rotating props, Im not yet sure on best position for cog..the props will help raise the rear, so a cog adjust may be needed with a turn fin movement to suit.
    Allows option of 1.25" centers behind sponson transom to 4" \_|
    Ive had twins with props this close before( nitro and same rotation ).. opposing spin here will introduce different lift/thrust kinetics... planning ahead for ride changes.



    Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
    @ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @

  17. #17
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    Smile

    looking forward to see the vid doc : )

  18. #18
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    Thanks to all comments.... it's interesting to build the first of a genre !

    @Richie.. it's the adult aged kids who scare easy ! ...
    and the turn fin will likely fillet fish quicker than John West ! hahaha

    @JC .. yeah, for sure .. there's clowns out there panting for footage+gps already !

    Waiting for cowl .. probably 7-10 days ..
    Still plenty to do here...
    esc mounts --- water tubes --- external safety loop ( mandatory in Au Assoc .. seriously you're a fool without one ) --- battery straps --

    a boat stand !.. that's an idea !

    umm
    already laminated Cf onto side ply walls ,but was camera shy ..
    already poured 16Oz/600ml ( when expanded ) of 2pak foam into the nose cones for strength... and poked pool noodles in as well.

    11pm here.. time for a throat lubricant !
    adieu
    Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
    @ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @

  19. #19
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    1/6th scale? There goes the Parma "Hemi".Any plans of scale like replication Doc? BTW,this should be a beast.

  20. #20
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    @srislash.. it's only 40" long, mate ....and barely space to squeeze in the needed go-hard gear .. !
    The cowl will be a concern for scale, but I trust the epoxyman to produce something admirable .
    Im sure these hulls will be avail for sale once the build is finished

    I do plan ( at this point ) to finish this as per the photo at bottom .

    Parma Hemi ? for scale there's plenty blown V8 replicas in this size ( do they float ?? )

    A beast or Monster ?.. water trials will tell !

    W

    667.jpg
    Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
    @ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @

  21. #21
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    There are some Doc,I found this one http://www.ebay.ca/itm/FORD-CAMMER-D...1#ht_500wt_923

    A drag boat is something I have been dying to build but have not found anything suitable(until now).This hull looks awesome so I hope they will be available.

  22. #22
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    Quote Originally Posted by srislash View Post
    There are some Doc,I found this one http://www.ebay.ca/itm/FORD-CAMMER-D...1#ht_500wt_923

    A drag boat is something I have been dying to build but have not found anything suitable(until now).This hull looks awesome so I hope they will be available.
    Err ahh that's a lot of breakage when it rolls over!
    Sure ideal for on the shelf.
    Cool, that seller is an easy cruise away. Thx the link.

    Hahaha just checked, already have that, motor on loungeroom shelf !
    Mine from another autoparts in Au. Very 'plastic' B(
    Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
    @ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @

  23. #23
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    Quote Originally Posted by drwayne View Post
    Err ahh that's a lot of breakage when it rolls over!
    Sure ideal for on the shelf.
    Cool, that seller is an easy cruise away. Thx the link.
    Ooh yeah,the breakage! Definitely have to have a sport mode option for cruising the scale look.

  24. #24
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    Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
    @ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @

  25. #25
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    That didn't take you long

  26. #26
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    Quote Originally Posted by drwayne View Post
    Err ahh that's a lot of breakage when it rolls over!
    Sure ideal for on the shelf.
    Cool, that seller is an easy cruise away. Thx the link.

    Hahaha just checked, already have that, motor on loungeroom shelf !
    Mine from another autoparts in Au. Very 'plastic' B(
    Quote Originally Posted by srislash View Post
    That didn't take you long

    hahaha
    Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
    @ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @

  27. #27
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    Quote Originally Posted by drwayne View Post
    hahaha
    Sorry bud,guess I kinda missed that tidbit.

  28. #28
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    I'm curious about a turn fin. This is a drag boat for going in str8 line? Do they need turn fins to keep str8? Just curious.... Looks cool so far

  29. #29
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    @Srislash .. no probs, m8

    Fin can be removed if/when this heads to SAW.
    Wont need it for str8 runs, the CR props will oppose each other thus no prop steer !
    Will need a fin for oval racing, though.. to hold in corners..

    However, full size have turn fins for str8 line stability. see below


    thanks to photographer (name?).
    Wayne Schutte PhdCSE BaSE BaEE. Australian, & damn proud of it YOUTUBE
    @ 36" H&M Maritmo twin1512/1800 6S1P 88mph @ 40" drag hydro#1 twin 5692 12S1P .....always for fun @

  30. #30
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    That is a good pic.It needs to be on a wall.

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