The local shop was running the dyno machine for $20 a pop plus free hot dogs. You can't beat free hot dogs. My bike (previously clueless') had the following results. Although the guy running the machine said I could get better air flow (and more power) if I moved the carb air intake back where the old intake box was (not using the old box) or even stuck it out the side. Do y'all know of any intakes that fit the savage that meet either of those criteria.

Without looking too close, that chart and numbers look pretty odd.  Perhaps something to do with it thinking you redlined at ~2750 rpm?

so we're halving all the numbers then?

I think Versy is right - double the rpm and half the torque. But I would wonder about the skills of the guy running the dyno. I presume the "lambda" refers to the air/fuel ratio, but I wonder where it was measured. If that's the case, a ratio of 10.04:1 is mighty rich. I note that the ratio stays very constant throughout the rpm range, which would make me think the airflow isn't restricted but that the main jet is too large.

Last summer I happened to visit a multi-brand dealership (Star City Motorsports in Lincoln, NE) during their annual customer relations event. They were running a dyno outdoors, with a free run for anyone who purchased $35 in merchandise in the store. I watched some of the runs. They made no connection to the electrics on the motorcycles, but instead hung some sort of sensor down near the engine. I do not know what the sensor was, but at the time I thought it to be a microphone listening to the engine to determine RPM. I do not know whether this is standard procedure, or if they did it to speed up the process under the circumstances. They also made no measurements of A/F ratio that I could see, although I expect such a measurement would be made using a tailpipe sniffer. Which makes me wonder how a catalytic converter would affect such a measurement.

ralfyguy wrote on 10/27/09 at 09:47:51:

No, no, pretty sure he's on the right coast.  

He said it was weird that it wouldn't go over 3500 rpm's. Also there was no no tailpipe sniffer. I think I probably paid $20 bucks for those "free" hot dogs. Whatever. I'm still pretty happy cause I got some LED blinkers and a Drag bar that should be here by Friday and I can't wait to install them.

Torque is a measurement of the twisting effort on the crankshaft. So torque increases as the throttle is opened and more air and fuel are allowed in the combustion chamber. At a given point the restriction of the air intake, exhaust, and  camshaft grind start to restrict the the efficiency of the air pump, but as the number of power pulses per time go up HP is increased as it is based on that. An inductive tach lead only needs to be close enough to read the EMF around the plug wire to work. I have one that works off an antenna that way. Missing is the A/F ratio probe in the exhaust and it does affect this numbers and that what dyno tuning is all about. Get all the exhaust numbers right and you'll see the torque/HP numbers even higher yet. That takes multiple runs and lots of jets/needle shapes to play with. We even used to have different cutaway on the slide to fine tune them. Lancers smoothing of that slide showed some + results as I remember.  Graphs look OK to me. Max