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  1. #1
    Kllr bee
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    300R on 21XD COMP

    What would be a good starting place for a prop on this combo? Getting one Wednesday. I have a 28 Promax I have been running on my 300XS. I carry bass pro shops outlet in my compartments.
    Richard aka Kllr Bee

  2. Member
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    #2
    On the comp hull I'd look at a 30 hydromotive or maybe a 29.
    2020 Allison XB 21
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  3. Member
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    #3
    You’re not gonna like the responses but I bet you’re gonna get told a max5 30 or 31 a lot. For a cheaper test prop try a powertech brv5 30-31 with the flare cut off, these do well and some guys have run very good numbers with them. Josh @ Steve’s props is who to call for one.

  4. Member
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    #4
    That 28 promax will run good.
    ‘17 Bullet 21 SDC ‘20 Merc 300R 1.60 SM 1E081012

  5. Member
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    #5
    I run a 31 pitch on a standard 21xrd. You will definitely need a 31 or better on a comp hull.

  6. Member
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    #6
    I want to go for a ride!!

  7. Member
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    #7
    I'm running a 32 Bravo on my 21XRD with the flare cut off. I also have a 30 Cleaver with the flare cut as well. The Cleaver is a lot stiffer than the Bravo.
    2013 Bullet 21XRD
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  8. Member
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    #8
    I think the OP is getting a 1.60 gearcase so his props are going to need to be in the 26-29 range depending on prop.
    ‘17 Bullet 21 SDC ‘20 Merc 300R 1.60 SM 1E081012

  9. Kllr bee
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    #9
    Yes on the 1.60 sportmaster. Wednesday is mounting day. I can't wait for my ride. I went with 1.60 so I wouldn't have to hunt big pitch props. My 300xs has a 1.62 running a 28 pitch Promax.
    Richard aka Kllr Bee

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    #10
    I think you'll like the 28 Promax on there. You will probably need an exhaust ring and all holes plugged.
    ‘17 Bullet 21 SDC ‘20 Merc 300R 1.60 SM 1E081012

  11. Bullet/Reels4Sale/Rods4Sale Moderator jayfaro's Avatar
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    #11
    If you’re interesting in a Merc Racing 30p Pro ET, let me know. I might be selling this one soon. Too many dang props
    Jay Faro
    Bullet 21xdc/300xs

  12. Kllr bee
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    #12
    I will know on Wednesday. Do they make a blowout ring for a 4 stroke sportmaster. I only ran 2 holes open on my 300xs.
    Richard aka Kllr Bee

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    #13
    Quote Originally Posted by kllr bee View Post
    I will know on Wednesday. Do they make a blowout ring for a 4 stroke sportmaster. I only ran 2 holes open on my 300xs.
    Richard aka Kllr Bee
    The regular size ring works fine.
    ‘17 Bullet 21 SDC ‘20 Merc 300R 1.60 SM 1E081012

  14. Kllr bee
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    #14
    Thanks
    Richard aka Kllr Bee

  15. Kllr bee
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    #15
    Motor went on Wednesday and went to water immediately. Promax 28 with blowout ring works just fine for for me with my fishing load. Hole shot is strong. Did a couple of wide open burst as recommended and hit 85. It has plenty more so I'm good with that.
    Richard aka Kllr Bee

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    #16
    Quote Originally Posted by kllr bee View Post
    Motor went on Wednesday and went to water immediately. Promax 28 with blowout ring works just fine for for me with my fishing load. Hole shot is strong. Did a couple of wide open burst as recommended and hit 85. It has plenty more so I'm good with that.
    Richard aka Kllr Bee
    ‘17 Bullet 21 SDC ‘20 Merc 300R 1.60 SM 1E081012

  17. Kllr bee
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    #17
    Went out and pushed it for a minute. 88 and still pegging the water pressure past 25. Plenty more left since I'm under 6000.
    Richard aka Kllr Bee

  18. Member
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    #18
    OH WOW. Get her dialed in and BE SAFE!
    2005 21XD W/ 2005 MERC 250XS BULLET TOTAL PERFORMANCE BOAT!!