Thread: Pro max set up

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  1. #1
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    Pro max set up

    21xd with 250XS. torque master lower with 1:62 gears. I am trying a 26 Pro max. My motor is 3/4 below pad. I did do a little running at this set up but it felt like it hits a wall at 78.. It is good on hole and mid and handling. I think Tim had suggested 1/2" below with the Pro Max when I was inquiring about one a while back. Does 1/2 sound right?
    2005 21XD W/ 2005 MERC 250XS BULLET TOTAL PERFORMANCE BOAT!!

  2. Member
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    #2
    May gain you 1mph. Don’t expect a huge difference with 1/4”.

    21s are very load sensitive for prop height I find.

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    #3
    How much ch water psi should I make sure I keep. I want too keep it safe
    2005 21XD W/ 2005 MERC 250XS BULLET TOTAL PERFORMANCE BOAT!!

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    #4
    At least 12 is what they say

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    #5
    I have a 21xd with a 28 promax same lower, 3/4 below pad- runs 83-84, 80 1 guys ready to fish.
    Mine for squirly at 1/2 below.
    Bass Cat Puma

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    #6
    Quote Originally Posted by nova385 View Post
    I have a 21xd with a 28 promax same lower, 3/4 below pad- runs 83-84, 80 1 guys ready to fish.
    Mine for squirly at 1/2 below.
    Do you have 1:62 gears?
    2005 21XD W/ 2005 MERC 250XS BULLET TOTAL PERFORMANCE BOAT!!

  7. BBC SPONSOR
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    #7
    1/2" below and the trim lever is your friend.
    Fastbass Marine LLC
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    #8
    Quote Originally Posted by BULLET FAN View Post
    Do you have 1:62 gears?
    1:75 gears
    Bass Cat Puma

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    #9
    Quote Originally Posted by nova385 View Post
    1:75 gears
    That explains the 28p.
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    #10
    Quote Originally Posted by BULLET FAN View Post
    21xd with 250XS. torque master lower with 1:62 gears. I am trying a 26 Pro max. My motor is 3/4 below pad. I did do a little running at this set up but it felt like it hits a wall at 78.. It is good on hole and mid and handling. I think Tim had suggested 1/2" below with the Pro Max when I was inquiring about one a while back. Does 1/2 sound right?
    What are the rpms? Don’t that model have the lower rev limiter, could it be hitting the limiter





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    #11
    Quote Originally Posted by rambo274 View Post
    What are the rpms? Don’t that model have the lower rev limiter, could it be hitting the limiter
    Wow! Not sure. It does not seem to be cutting out!
    2005 21XD W/ 2005 MERC 250XS BULLET TOTAL PERFORMANCE BOAT!!

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    #12
    Quote Originally Posted by BULLET FAN View Post
    Wow! Not sure. It does not seem to be cutting out!
    If its a 2005, it has the 6300 limiter. 03-04 were the only years of the low limiter.

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    #13
    good to know! Thanks so much for responding
    2005 21XD W/ 2005 MERC 250XS BULLET TOTAL PERFORMANCE BOAT!!