Page 2 of 2 FirstFirst 12
Results 11 to 16 of 16

Thread: Used to run over a 100mph

  1. #11
    hava life
    brianthomas A 200 rpm drop will not cost you 20 mph though. There is something else wrong here
    You mean 200 RPM increase
    Maybe the wifey had someone slow down the rocket because she wants you to get a bigger boat

  2. #12
    AZJD
    I recently had my drive rebuilt and since then I can only get 84-85mph on the rev limiter @ 5600-5700rpm. I do not what gears were in it before I had it rebuilt. Any thoughts? I think a different ratio was used like 1.5s and I probably had 1.36's:idea: Don't know. I am currently running a labbed 30 that would not see the rev limiter and the boat would run 104 on a good day and hit a hundred consistantly anytime else.
    Stupid question, but is this on GPS?

  3. #13
    Jetaholic
    I think the main question here is can you spin out in the reeds ?
    He used to be able to, but I think when they rebuilt the drive they installed over transom headers and he lost 5 mph

  4. #14
    Infamous
    Stupid question, but is this on GPS?
    No I had my buddy pace me in a helicopter j/k yes it is on gps

  5. #15
    Infamous
    Talked to the shop. yes the wrong ratio was put in. I have 2 choices. 1)play with some bigger props or 2) put 1.36's back in. They will eat the cost. I think I will toy with the props see if I get some better #'s. If not I will have them change the gears.

  6. #16
    Infamous
    Brian, try this link and play with your numbers - according to what I put in -
    1.36 @ 30 pitch, 5500, 10% slip has you at 104
    1.51 @ 30 pitch, 5700, 10% slip has you at 96
    Seems you're still 10mph off?
    ------------
    On a happier note, the wetbacks who bought Pete's house have it up for sale (fire sale, that is).
    http://www.go-fast.com/Prop_Slip_Calculator.htm
    Which Pete. Not old man Pete?

Page 2 of 2 FirstFirst 12

Similar Threads

  1. Another 100mph Hot Rod
    By CMZRACING in forum Boating, East
    Replies: 5
    Last Post: 04-27-2007, 08:51 PM
  2. How much HP to get 26 daytona over 100mph
    By Cat & Mice in forum Cats & Tunnels
    Replies: 85
    Last Post: 11-04-2006, 06:30 AM
  3. A 100MPH pass
    By Kilrtoy in forum Sandbar
    Replies: 45
    Last Post: 02-23-2005, 12:40 PM
  4. 96 a/o 26' nxs 100mph.
    By boatcrazy in forum Cats & Tunnels
    Replies: 6
    Last Post: 10-15-2003, 02:39 PM
  5. What GPS reads over 100mph?
    By DetroitJim in forum V-Drives
    Replies: 3
    Last Post: 09-18-2001, 07:53 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •