[Richard]

Tom M, on Jun 26 2009, 03:39 PM, said:

Here's one that was done with the stock ECU + PCIII. Again, I don't know why hp and tq curves don't cross at 5252 . I didn't get printouts for every run, we just looked at the screen for many.

Is it just me, or it that reading max power as being 32hp?!?!?

[Tom M]

Richard, on Jul 27 2009, 07:00 PM, said:

Is it just me, or it that reading max power as being 32hp?!?!?

Those are part throttle runs where I was checking A/F numbers. Go back a few posts to see full throttle.

[Richard]

That would make more sense.....!

[luhbo]

Gents,
today we've been on a Dyno, too. Probably the first time for both of us and after 100.000 km it was high time as well.
This is what we've got (numbers valid for the wheel):



No special mods. Just a My15M and an Ex-QuatD. Last service 5000km ago.

And here you can hear how it was done

http://www.youtube.c...h?v=zft3A5TKzb8

Hubert

[Tom M]

Here's a simple unit converter for anyone that wants to compare SAE to Euro horsepower and torque numbers.

http://zxz-rally.110...i/converter.htm

[guzzigray]

Here's a Dyno chart from yesterday for my racer.

Sport 1100 engine in a Tonti frame. Mike Rich heads,41mm carbs, stock bore and pistons, Megacycle X10 cam. H crossover and JC Whitney mufflers.

Best results so far: 145 or 150 mains, 265 needle jet, needle clip on the middle position. 81hp, 63 ft lbs torque. Power peaks at 7300 rpm.

Tried 130 mains and power dropped by 20 hp.

The baseline runs were with 140 mains and the needle clip on the top position. Note the huge hole in the torque that was filled when I went to the clip in the middle position.

Next time I'll try 268 needle jets.

Yes I am a nerd!!!!!

Attached File(s)

•  Dyno run.pdf (64.84K)
  Number of downloads: 26

[raz]

That's nice figures.

guzzigray, on 24 May 2010 - 02:18 AM, said:

Tried 130 mains and power dropped by 20 hp.

Quite a drop. You don't happen to know A/F values too as reported by a wideband sensor? I wonder how much leaner it was running with the 130.

[guzzigray]

raz, on 24 May 2010 - 02:30 AM, said:

That's nice figures.


Quite a drop. You don't happen to know A/F values too as reported by a wideband sensor? I wonder how much leaner it was running with the 130.

I don't know A/F ratios. Next time I'll be a little more scientific. I'm pleased with the results especially as the power peaks at 7300rpm. Definitely more power to be had considering the motor will spin safely to 8500rpm.

The biggest surprise to me was how one clip position filled in the torque curve. Obviously these 1100 engines don't like lean jetting??

Not that carb issues are anything you have to worry about with a V11.

[Greg Field]

guzzigray, on 23 May 2010 - 05:18 PM, said:

Here's a Dyno chart from yesterday for my racer.

Sport 1100 engine in a Tonti frame. Mike Rich heads,41mm carbs, stock bore and pistons, Megacycle X10 cam. H crossover and JC Whitney mufflers.

Best results so far: 145 or 150 mains, 265 needle jet, needle clip on the middle position. 81hp, 63 ft lbs torque. Power peaks at 7300 rpm.

Tried 130 mains and power dropped by 20 hp.

The baseline runs were with 140 mains and the needle clip on the top position. Note the huge hole in the torque that was filled when I went to the clip in the middle position.

Next time I'll try 268 needle jets.

Yes I am a nerd!!!!!

What needles?

[guzzigray]

Greg Field, on 31 August 2010 - 11:00 PM, said:

guzzigray, on 23 May 2010 - 05:18 PM, said:

Here's a Dyno chart from yesterday for my racer.

Sport 1100 engine in a Tonti frame. Mike Rich heads,41mm carbs, stock bore and pistons, Megacycle X10 cam. H crossover and JC Whitney mufflers.

Best results so far: 145 or 150 mains, 265 needle jet, needle clip on the middle position. 81hp, 63 ft lbs torque. Power peaks at 7300 rpm.

Tried 130 mains and power dropped by 20 hp.

The baseline runs were with 140 mains and the needle clip on the top position. Note the huge hole in the torque that was filled when I went to the clip in the middle position.

Next time I'll try 268 needle jets.

Yes I am a nerd!!!!!

What needles?



K4 needles.

I've since done another run but on a different dyno with 150 mains and 268 needle jets. With 110 race gas we saw 76 hp (it was a 100 degree day). I have some experimenting to do with timing as I'm currently at 30 degrees but with the 110 I'm thinking I could advance to 31-32 degrees. Obviously until I stick to one dyno and get a baseline none of this really matters.........

For what it's worth the bike will easily pull 8,000 with a 7:33 gear set at PIR which translates to 135mph.

Hoping to dyno next week and I'll post the results along with AF ratio readouts.