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  1. #1
    Member
    Join Date
    Jan 2009
    Location
    campbellsville, ky.
    Posts
    279

    Promax on a 21xdc

    I broke another ear off my 29 promax Saturday , 3rd one. so when i replace it i need more bow lift . does a 28 promax have more cup than a 29? i was told that promax even numbers had more cup than odd numbers . I turn around 5900 to 6000 with the 29 . I think i need something to get the front end up and turn more rpm.

  2. Member
    Join Date
    Jan 2014
    Location
    Madison Alabama
    Posts
    128
    #2
    Yes, the even numbered props have more cup. They are the reverse of a Bravo. They cast them in even sizes and then remove cup to take them down in pitch. Your 29 was cast as a 30.