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  1. #51

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    RE: 21 Tunnel Talk

    Gene, Nice Clegg modded sleeve you got there.  The ole hole in the exhaust side of the sleeve, to cool the exhaust side of the piston.  Keeps the charge centered better in the cylinder.  I always liked jame's theory.  I tried that on a couple of my motors after I chatted with him about it, and it helped me keep the wrist pin boss in some of the ones, that i kept breaking.  good stuff.

  2. #52

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    RE: 21 Tunnel Talk

    Hey Rodney,
    Yes its James work, sleeve and crank........
    Here is a better A/C button shot and another sleeve view.

    Tim says it will depend on the cc's of the A/C head vs W/C if we get any gains.
    Still in tha works,
    Gene
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  3. #53

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    RE: 21 Tunnel Talk

    Here are some pictures of the radio box that I made for my Vision Craft. The included fiberglass radio box was too narrow for my liking.



    Craig Mapstone, IMPBA #20305S, Stony Pond Model Boat Club
    2012 D1 20 Hydro Champion

  4. #54

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    RE: 21 Tunnel Talk

    Gene, i would have to say that button will work.  Nice big flat on there, to help keep the a little torque in it.  Your running this as a "sport" engine I assume?  No pipe???  I bet that will work great man.

  5. #55

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    RE: 21 Tunnel Talk

    Blackout, looks good brother!!!

  6. #56

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    RE: 21 Tunnel Talk

    I like it Craig,
    Gives ya a little room in there for yer fingers to get to stuff,
    Nice work Man,

    Rodney,
    Yea that's what I am thinking, Cut the head down to four or five fins,
    to look like tha stocker. He had a idea for tha spacer in tha muffler too,
    Two sections rather than one for more tuning options.
    That way ya just change screws for length....
    Well see,
    Gene

  7. #57

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    RE: 21 Tunnel Talk

    Gene, forsure man!!

  8. #58

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    RE: 21 Tunnel Talk

    When I bought the OS from James he said it will blow a Villain off at will,
    Any mods can take a Villain/VS1 to the edge of its design limits.
    Finish up the build and baseline the hull,
    Then I'll deceide on the A/C stuff,
    Gene



    More pics and vids Dudes!

  9. #59
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    RE: 21 Tunnel Talk

    The Viilain/VS-1 was originally made for stock K&B's, Mike's Nemesis was made for modded OB's.
    IMPBA 17238 S
    269 Racing Team

  10. #60

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    RE: 21 Tunnel Talk

    Bout time ya got back over here...... [:-]

    Hey Man saw yer rigger in tha gallery at IW, Sweet!
    Got ta run it yet?
    Gene

  11. #61
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    RE: 21 Tunnel Talk

    Just the gasser so far. The plan was yesterday to get the .12 wet but woke up feeling sick along with the wife and kid plus a nasty weather front rolling over the big lake kind of put a kabosh on that. Right now we're shooting for Friday. It's all in the trailer ready to roll.
    IMPBA 17238 S
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  12. #62

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    RE: 21 Tunnel Talk

    Kewl beans chili dog, Let me know how it does.......
    Gene

  13. #63
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    RE: 21 Tunnel Talk

    Hey Generz, been reading up on the new OS OB? Air-cooled head and a few mods done but the price tag will make you go to the ER because of sticker shock! Geez Louise, you'd think that you're buying a CMB!
    IMPBA 17238 S
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  14. #64

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    RE: 21 Tunnel Talk

    Oh Yea!
    I been to OS engines in Osaka, A hobby store in Singapore, And three of the larger stores here, Same price 449 usd.......
    This really throws me cause I got that same amount in the WHOLE project on this post,

    VS1 kit NIB
    Mod OSXM used
    Cowl change
    Two props

    Really to bad bout K&B, If they would just release the SS 3.5 and 7.5 Priced right they would have something.
    The SS got a bad rap bout finiky needle, "Fat on tha Stand is Cool in tha Pool" Mike Z. slogan,
    Launch it fat so the heat spike dont take it lean and stall.

    I Dunno,
    Gene

  15. #65
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    RE: 21 Tunnel Talk

    QC took a dump around the time that the SS came out at the original K&B. I bought one when they first came out and had nothing but trouble with it. I wasn't the only one by a long shot as shortly after I got it, my wife raced the boat at the Illini Powerboaters Club race in Joliet. All who had them were wrestling trying to get them to run right. I found part of my problem when I tore it down, the con-rod bushing on the crank end was MIA from the factory! Many of the parts for the SS must have came out of NOS as the muffler and exhaust flange were taken from the antique .21 inboard, the one with the funky venturi that laid on its side and the flange was just the exhaust throttle flange with only one of the two butterfly arm holes filled with a plug.
    We were all hoping that when MECOA took over K&B that we'd see an improvement in QC but not much luck on that one. Now it looks like the K&B line may be going belly-up.

    Now comes a funny part. According to IMPBA rules for the stock .21 OB class, OS has to prove that they've made 500 of those new mills to be allowed to run in the stock class! If not, they will have to race against mod motors! [sm=lol.gif]
    I should be able to see those new OB's running in September at the Hobart Masters race as Grimmie and JD will both be there.
    IMPBA 17238 S
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  16. #66

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    RE: 21 Tunnel Talk

    MIne was a parts motor, I collected enough stuff and built one, Seems like I got tha SS head from Mikie,
    Cant remember if mine had tha plug in tha muffler or not. Yea a report from Hobart will be interesting,
    The only feedback that I know of so far is JD.

    I said it on page two, One more time......
    Anyone running the OSXM Ver. II chime in here and let us know what ya think......
    Gene

  17. #67
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    RE: 21 Tunnel Talk

    Yeah, that was one odd thing, they plugged only one hole, not both of them. I thought that maybe I had one that slipped through like that then looked at the feature article in RCBM and that one also had it missing. I roughed up the inside and plugged the hole with JB Weld then turned it around so it wouldn't show.
    IMPBA 17238 S
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  18. #68

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    RE: 21 Tunnel Talk

    Bit strange pluggin one not the other fer sure......
    Gene

    More pics tunnel Dudes!

  19. #69
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    RE: 21 Tunnel Talk

    Will old ones do?
    The DPI .21 was my wife's race boat while the 7.5 DPI was mine. That one was a prototype, one of the first 6 "good" ones from the mold. I should have kept the Aero-Tech as although it was really heavy it was a great boat.
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    IMPBA 17238 S
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  20. #70

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    RE: 21 Tunnel Talk

    Heck Yea Man!
    Geeeez Ron I REALLY like your paint! I remember the Don Q boat from back then, Sweet.......

    Hey Craig,
    I read your offer at the Yikes post at the other place. It would be great if you run a comparision of Ver. I vs Ver. II at your pond, Thats very generous Man! Looking forward to your findings if ya do it. I was gonna comment there, But that post a bit touchy right now
    Gene

  21. #71

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    RE: 21 Tunnel Talk


    ORIGINAL: Slideblues

    Heck Yea Man!
    Geeeez Ron I REALLY like your paint! I remember the Don Q boat from back then, Sweet.......

    Hey Craig,
    I read your offer at the Yikes post at the other place. It would be great if you run a comparision of Ver. I vs Ver. II at your pond, Thats very generous Man! Looking forward to your findings if ya do it. I was gonna comment there, But that post a bit touchy right now
    Gene
    I'm hoping the Ver. II goes on sale this winter at Tower Hobbies. If it does, I will pick one up for sure. A few months ago, the Ver. I was on sale for $324.99 ($50.00 off).

    I'll start a thread on here about my timing system as it comes together. If it works out, it will be a cheaper option than the IMPBA equipement, but still just as accurate. I have a pair of laser sensors ordered and will be testing them shortly. I found them for $117 a pair online. They are new surplus stock, so about half what they would be if bought direct from the manufacture.


    Craig Mapstone, IMPBA #20305S, Stony Pond Model Boat Club
    2012 D1 20 Hydro Champion

  22. #72

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    RE: 21 Tunnel Talk

    Neat idea, Keep us posted on your system progress!
    Ya Tower should have some kinda off season deal on them.
    Gene

    Added a couple prop pics here.....
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  23. #73

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    RE: 21 Tunnel Talk

    And speaking of props.....
    Hey Ron!
    What tha heck happined to all tha 1440's ?
    Bag stock or mod, Checked round some stores and no body has any.........
    Gene

  24. #74
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    RE: 21 Tunnel Talk

    No idea, maybe Sholund bought them all!
    I'm sitting on 2 of them, one still NIP.
    Did you try Gary Preusse? If anyone has them, he should or can get them quickly as he drives over to Octura to pick up his up his orders.
    IMPBA 17238 S
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  25. #75

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    RE: 21 Tunnel Talk

    Dangle a bit o' bait.......... [8D]
    Lets just say a group of two HUGE prop lots were fer sale and "SOMEONE"
    Bought tha whole frigg'n lot of 21 stuff yea........

    Never thought bout Gary,
    Thanks Man
    Gene

    One from column A, Two from column B...........[sm=tongue_smile.gif]
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