Articles
   
       
       
Pics/Video
   
       
       
Shop
Search
 
 
 
 
 
Home   Articles   Pics/Video   Gear   Wake 101   Events   Community   Forums   Classifieds   Contests   Shop   Search
WAKE WORLD HOME
Email Password
Go Back   WakeWorld > >> Boats, Accessories & Tow Vehicles Archive > Archive through July 21, 2006

Share 
Reply
 
Thread Tools Display Modes
Old    Johnny Wadd            06-24-2006, 10:42 PM Reply   
I am going camping at a lake (Jackson Meadows) that is 7800' elevation. My neighbor has a I/O Crownline and he said at that elevation it is hard for him to pull a rider up on a wakeboard and that his boat doesn't run well. My question is.....my 05 PCM 330 should compensate for the elevation right?I usually run at or just above sea level.
Board More/Work Less!
J$
Old    Matt (pittsy)      Join Date: Apr 2004       06-24-2006, 11:07 PM Reply   
the best thing to do is change the prop...MC has what a high altitude prop and that should fix all your problems!

nice profile pic by the way!

(Message edited by pittsy on June 24, 2006)
Old    Dan (dmkhnr)      Join Date: Aug 2001       06-24-2006, 11:08 PM Reply   
Your going to notice a huge loss of power at that elevation. I run at sea level twice a year, a lake that sits at 4000' elev, and a lake that sits at 5000' elev. 4000' isn't too bad, pulls fine with full ballast and rider. 5000 is a strain with full ballast and a rider. The motor revs out to 2500 rpm until just planing over then will pick up rpm and run fine. Running around empty is no problem.
Old    Jim G (heem)      Join Date: Dec 2005       06-25-2006, 3:56 PM Reply   
I second the loss of power at altitude. A couple of days ago we were boarding/surfing at a lake that sits roughly 5500-6000 ft. We had 4 normal size adults and rear ballast was full and front was maybe half full. The boat pulled the rider out ok but really struggled when I put the wakeplate in the up position. It was such a significant loss of power that we all thought something was wrong with the motor. It goes in tomorrow for a double check and service.

As far as your motor compensating, it will to a point but changing to a high altitude prop may be what you need.
Old    Tom Barnard (tlb)      Join Date: Feb 2003       06-25-2006, 4:12 PM Reply   
We used to take our SAN to Union Valley alot..
I think it's about 6k feet.. There was a little power loss but not much..
A friend of mine has an older boat without fuel injection and his boat runs like crap..
I wouldn't worry about it
Old    Matt (pittsy)      Join Date: Apr 2004       06-25-2006, 5:43 PM Reply   
where i ride in california the lake is like 5000 or 5500 ft and i have full rear ballast plus 700 extra rear ballast, no front ballast 4 people in the back and had no problems out of the hole...changing the prop makes a huge difference..
Old     (nbeihl)      Join Date: Mar 2004       06-25-2006, 7:58 PM Reply   
You will experience a power loss, but nothing that will make you not be able to pull out a skier. It may not rip it out of your hands, but it will still pull you up easy.
Old    Jay (jaybird)      Join Date: May 2006       06-25-2006, 10:14 PM Reply   
if you have a motor that is computer controlled and you have fuel injection the motor will compinsate for the lack of o2 unlike a carburated motor and your 05 should have all that
Jay
Old    C.I.E. J-Rod (jarrod)      Join Date: May 2003       06-25-2006, 10:45 PM Reply   
his I/O will likely not perform like your SAN (or any comp boat) at high altitude.....apples to oranges. I/Os have a tough time to begin with.
Old    Mikeski (mikeski)      Join Date: Aug 2003       06-26-2006, 12:06 AM Reply   
There are two things that cause cars and boats to run poorly at high altitudes. One is lack of oxygen the second is poor air/fuel ratio. EFI will compensate for the second but not the first. Air is a critical component to your motor making power. If the air at that altitude is only 80% as dense as the air at sea level your motor will only be able to make 80% as much power as it makes at sea level. You can probably expect a performance drop equivalent to a step increase in prop pitch. What prop are you running? I would guess that your boat has an ACME 645? If thats the case you should be fine, it will just be a little slower than usual. If you are running a bigger prop, it might be time to consider buying a lower pitched spare/hi-alt. prop.

(Message edited by mikeski on June 25, 2006)
Old    KBC            06-26-2006, 1:57 PM Reply   
your boat should be fine. you'll definitely notice a loss of power, but you'll still be able to ride and ride with ballast. I ride at Jackson Meadows a few times a year. The elevation is noticable, but it won't completely bog you down.
Old    KBC            06-26-2006, 1:58 PM Reply   
oh, forgot to say that I do run a very aggresively pitched prop though.
Old    Mikeski (mikeski)      Join Date: Aug 2003       06-26-2006, 6:41 PM Reply   
Aggresively pitched inplies a tall pitch difficult for the motor to turn??? (like a more aggressive tire bites more dirt a more aggressive prop bites more water = harder for the motor to turn in both cases).

enough about that.

Is your boat propped for stronger holeshot or higher top speed? I am guessing that you have it pitched for stronger holeshot, which is good in this situation. If you truly mean it is aggresively pitched to produce a higher speed you might want to consider picking up a flatter prop for this trip.

Reply
Share 

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



All times are GMT -7. The time now is 4:45 AM.

Home   Articles   Pics/Video   Gear   Wake 101   Events   Community   Forums   Classifieds   Contests   Shop   Search
Wake World Home

 

© 2012 eWake, Inc.    
Advertise    |    Contact    |    Terms of Use    |    Privacy Policy    |    Report Abuse    |    Conduct    |    About Us