Driveshaft or HBAR? - Reply to Topic

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Topic Review (Newest First)

  • 06-08-2008, 03:55 PM
    Brendellajet
    Quote Originally Posted by moneysucker View Post
    The guy who sank from a broken driveline was fleetimus, I have the video on my computer and may be able to load it if I can figure out how. But it was not 1000 hp and it was due to an old u joint coming apart and spinning the driveshaft whipping ito the intake housing and breaking it causing the boat to sink. the whole thng took about 30 sec to go down.

    I would say you are potentially opening yourslf up to weight and ballance problems and possible porpoising by shifting the motor back. But You never know for sure until you try.

    Cy
    Nope, not the one I was thinking of...but I digress, cannot find the one I was thinking about...
  • 06-08-2008, 01:16 PM
    moneysucker
    The guy who sank from a broken driveline was fleetimus, I have the video on my computer and may be able to load it if I can figure out how. But it was not 1000 hp and it was due to an old u joint coming apart and spinning the driveshaft whipping ito the intake housing and breaking it causing the boat to sink. the whole thng took about 30 sec to go down.

    I would say you are potentially opening yourslf up to weight and ballance problems and possible porpoising by shifting the motor back. But You never know for sure until you try.

    Cy
  • 06-08-2008, 12:51 PM
    tunneljet
    So the pump shaft and crank shaft should be on the same angle, but at different heights so as the driveline angle is between 1-3 degrees?
  • 06-07-2008, 10:12 PM
    IMPATIENT 1
    Quote Originally Posted by HawaiianJet View Post
    looks like the 1310 will take way over 1000hp with good ujoints in it, cause that's what's in my boat i had the driveshaft shop put in the strongest ujoints spicer made and check the balance afterwards, he said there's n.f.way i could break a joint. they've got about 15hrs on them so far, and i've hit em with the grease gun prob 3 times in that 15hrs. i check the shaft religiously along with loader bolts, etc.. fleetmus's gullwing goin to the bottom put the fear in me.
  • 06-07-2008, 10:02 PM
    HawaiianJet
    Quote Originally Posted by IMPATIENT 1 View Post
    howabout a link, some don't have the book
    Drivelines
  • 06-07-2008, 09:57 PM
    IMPATIENT 1
    Quote Originally Posted by HawaiianJet View Post
    1350's are for 600hp and up.

    p.158 CP Performance 2008-2009 Catalog
    howabout a link, some don't have the book
  • 06-07-2008, 09:37 PM
    HawaiianJet
    1350's are for 600hp and up.

    p.158 CP Performance 2008-2009 Catalog
  • 06-07-2008, 06:06 PM
    Brendellajet
    Quote Originally Posted by widowmaker View Post
    ...... it didn't break from HP I can assure you. lack of maintenance or bad welds.
    No welds on a 1310...I doubt maintenance was the prob. Ill see if I can dig up the thread. All Im saying is that there is a stronger, safer alternative available for not much more $$$. I'll bet you a 12pack though, you lose a driveline and the chances of your boat sinking increase really quick. Go ahead and play those odds. Ill keep my 1350.
  • 06-07-2008, 05:04 PM
    Rexone
    1-3º with pump shaft and crank shaft in parallel planes. My preference is not over 2º.

    From Spicer Release...

    "As part of the Spicer 10-Series family of driveshafts, the 1310 driveshaft is engineered to provide an extended spline life, with reduced thrust loads under pressure, lower friction under the load, and superior needle bearing retention. The driveshaft features universal joints that are easily serviced for minimized downtime, with an 800 pounds-per-foot/1,080 Nm (short duration) and 1,600 pounds-per-foot/2,160 Nm (minimum elastic limit) torsional rating and a 4.00-inch (101.6 mm) maximum swing diameter."

    Also another reference in agreement with the above 1600 lb per foot rating below...

    Also stating the rating of the 1350 is 2200 lb per foot of torque.



    This is all in agreement with the Spicer literature I have as well.
  • 06-07-2008, 10:50 AM
    cs19
    I run 1350's now just to be safe but the weight of a long 1350 driveshaft really bums me out. I ran 1310's for a long time and was running about 1000 hp with a shot of nitrous on that and it held up fine. There are a bunch of guys out there doing that right now and they seem to hold up, never seen one that was well maintained break. I didnt want to take a chance so I upgraded. One driveline guy told me that 900 HP was the limit of a 1310. Its probably safe to say jetboats dont load the driveline as hard as a car does, those guys drop the clutch and hook up and go we can only dream of traction like that so we can probably push a 1310 harder than they can.
  • 06-07-2008, 10:09 AM
    Boat 405
    Quote Originally Posted by hotrod56cars View Post
    I think tunneljet is wanting to ditch the long driveshaft in favor of a short H bar and move the engine back accordingly. I was wondering what would change if that was done also (driveshaft angle, driveability, handling, etc...).
    As long a the motor mounts, I'm assuming a rail kit is on the same plane( possibily 4 degrees) with the pump. You can move the motor back no problem with the use of a H bar style driveshaft.
  • 06-07-2008, 09:47 AM
    hotrod56cars
    I think tunneljet is wanting to ditch the long driveshaft in favor of a short H bar and move the engine back accordingly. I was wondering what would change if that was done also (driveshaft angle, driveability, handling, etc...).
  • 06-07-2008, 09:37 AM
    Boat 405
    Quote Originally Posted by Brendellajet View Post
    There was a guy on HB running a 1310 I think with a thousand horsepower. His boat sank when his driveline let loose...1350 for me.

    Scary to think some of you with all the coin you have wrapped up in your toys will go with the weakest alternative available for a jetboat driveline...
    ...... it didn't break from HP I can assure you. lack of maintenance or bad welds.
  • 06-07-2008, 09:28 AM
    Brendellajet
    There was a guy on HB running a 1310 I think with a thousand horsepower. His boat sank when his driveline let loose...1350 for me.

    Scary to think some of you with all the coin you have wrapped up in your toys will go with the weakest alternative available for a jetboat driveline...
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