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george wilson
Joined: 18 Nov 2010
Posts: 13
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 Posted: Wed Nov 28, 2012 5:50 am Post subject: Yamaha Peak Torque |
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| What would be the average peak torque (at what RPM) on a Yamaha KT100 set up for Senior or Master classes? |
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Patrick Hubbell
Joined: 22 Jul 2001
Posts: 2546
Location: United States, California, San Jose
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| Posted: Thu Nov 29, 2012 12:44 pm Post subject: |
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With a pipe, peak torque is between 9,000 and 10,000 rpm
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Patrick Hubbell |
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patrick slattery
Joined: 23 Apr 2004
Posts: 787
Location: United States, Ohio, cleves
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| Posted: Fri Nov 30, 2012 2:39 pm Post subject: |
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| 8400 to 8600 on a SSX Can. We have seen 10300 to 10500 on a L2 pipe |
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al nunley
Joined: 13 Nov 2006
Posts: 3037
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| Posted: Sun Dec 23, 2012 5:15 pm Post subject: |
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On my dyno, in the late 80’s, the KT100 reached peak torque right at 10,300, plus or minus a little, with all fixed pipes.
Testing at the track is good if you don’t have a dyno. Play with the clutch and see what happens.
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If the data does not support the theory, get a new theory. (Al Nunley)
All else being equal; Compression is the Holy Grail.
45 years, in and around karting |
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Brian Spek
Joined: 27 Sep 2010
Posts: 69
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| Posted: Fri Dec 28, 2012 7:29 am Post subject: |
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when buying at kt100, what is a good dyno reading for hp? can class.. thanks.
| al nunley wrote: | On my dyno, in the late 80’s, the KT100 reached peak torque right at 10,300, plus or minus a little, with all fixed pipes.
Testing at the track is good if you don’t have a dyno. Play with the clutch and see what happens. |
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al nunley
Joined: 13 Nov 2006
Posts: 3037
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| Posted: Fri Dec 28, 2012 4:59 pm Post subject: |
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| patrick slattery wrote: | | 8400 to 8600 on a SSX Can. We have seen 10300 to 10500 on a L2 pipe |
A little lower on my dyno, but that could just be the difference between my dyno, a water break, and yours.
_________________
If the data does not support the theory, get a new theory. (Al Nunley)
All else being equal; Compression is the Holy Grail.
45 years, in and around karting |
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patrick slattery
Joined: 23 Apr 2004
Posts: 787
Location: United States, Ohio, cleves
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| Posted: Wed Jan 09, 2013 5:01 pm Post subject: |
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| Brian Spek wrote: | when buying at kt100, what is a good dyno reading for hp? can class.. thanks.
| al nunley wrote: | On my dyno, in the late 80’s, the KT100 reached peak torque right at 10,300, plus or minus a little, with all fixed pipes.
Testing at the track is good if you don’t have a dyno. Play with the clutch and see what happens. |
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Brian, you can't go by one guys dyno vs another one. They are all different, calibration is not always the same, etc. You want to be more interested in how your motor compares to other engines on that same dyno. Some will get 18.00 hp on a can while other dynos will only show 12-13 with the same motor. It's all about comparison from a knows dyno source. |
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