Author Topic: Altitude and Tuning a saw  (Read 109 times)

0 Members and 0 Guests are viewing this topic.

Offline Cat-Face Timber

  • 4 cube
  • **
  • Posts: 70
  • Karma: 9
Altitude and Tuning a saw
« on: January 22, 2015, 10:42:55 am »
What effect does Altitude have on a saw?
I am talking about my Husky 288.

I am at elevation 5500 and I usually cut at 6000 to 7000 feet.

Would you re-tune?

Richer or leaner the higher I go?
MIGHTY HUSKY 235
BESTEST SAW EVER!

Share on Facebook Share on Twitter


Offline aclarke

  • Nitro Hotsaw
  • *******
  • Posts: 1676
  • Karma: 172
Re: Altitude and Tuning a saw
« Reply #1 on: January 22, 2015, 11:28:50 am »
Lean as you go higher. You'll lose power as you go highrr

Offline Cut4fun .

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 22574
  • Karma: 591
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair
Re: Altitude and Tuning a saw
« Reply #2 on: January 22, 2015, 12:37:44 pm »
REDNECK Saw Repair Getter Done

Online srcarr52

  • 6 cube
  • ****
  • Posts: 288
  • Karma: 93
  • Location: IA
Re: Altitude and Tuning a saw
« Reply #3 on: January 22, 2015, 01:09:15 pm »
The higher the altitude the thinner the air is (less ambient air pressure, air is less dense). So if your saw was adjusted for low altitude and you run it at higher altitude without adjusting the carb it would run rich. 

500' isn't going to change much but 1500' would.

No matter what you do as you go higher in altitude you will loose power.

Offline Eccentric

  • Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2112
  • Karma: 217
  • Magnesium and Iron.
  • Location: Northwestern Wyoming
Re: Altitude and Tuning a saw
« Reply #4 on: January 29, 2015, 02:37:18 pm »
Yep.  It'll run richer (at the same settings) at the higher altitude.  Just be SURE to retune for the lower altitude when you return.  The saw will run leaner at the lower altitude due to the denser air (more oxygen).

Online 3000 FPS

  • Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 4547
  • Karma: 291
  • Location: Carpenter, Wyoming
Re: Altitude and Tuning a saw
« Reply #5 on: January 29, 2015, 07:50:15 pm »
There is one other thing that you lose as you go higher and that is compression.   That is one reason why you lose power.
PP 505, 475, 445.

 

Related Topics

  Subject / Started by Replies Last post
9 Replies
967 Views
Last post March 03, 2011, 08:53:49 pm
by jamming
Tuning a saw

Started by 05_sprcrw « 1 2 3 » Husqvarna

25 Replies
1368 Views
Last post May 04, 2011, 12:45:06 pm
by 05_sprcrw
3 Replies
1416 Views
Last post August 22, 2012, 07:06:45 pm
by AussieRedGum
11 Replies
184 Views
Last post February 28, 2014, 03:14:46 pm
by Cut4fun
15 Replies
357 Views
Last post April 04, 2014, 11:17:57 pm
by Reddog
7 Replies
221 Views
Last post April 21, 2014, 09:42:26 pm
by rms61moparman
3 Replies
152 Views
Last post August 02, 2014, 06:57:23 pm
by Cut4fun .
16 Replies
469 Views
Last post November 16, 2014, 08:44:38 pm
by 3000 FPS
4 Replies
264 Views
Last post September 18, 2014, 01:47:38 pm
by pigpen60
1 Replies
242 Views
Last post December 11, 2014, 01:29:35 pm
by 660magnum