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Message started by ThumperPaul on 10/05/24 at 08:00:07

Title: Timed Runs
Post by ThumperPaul on 10/05/24 at 08:00:07

What in the redneck heck am I doing!?

Rigged up an action camera to record the tachometer. Hopefully it’s secured well enough. We will see…

The idea is to video record the tach and capture times:

1) 3rd gear from 4000 - 6500 rpm
2) 5th gear from 3500 - 5000 rpm

This is stealing a page out of DBM’s playbook in “Evolution of a Hotrod”. Once I’ve captured the video, I can play it back on a PC and use a stopwatch to measure the times.

I want to optimize the carb tuning without dropping a small fortune on real dyno testing or relying on my butt dyno.

Wish me luck!

Title: Re: Timed Runs
Post by zevenenergie on 10/05/24 at 09:29:21

Good Luck, you got this.

Title: Re: Timed Runs
Post by ThumperPaul on 10/05/24 at 11:52:45

76697A69626962697E6B65690C0 wrote:

Good Luck, you got this.

Thank you! The camera stayed secure on a test ride this morning. Step 1 good.

I need to work on my technique to try to replicate the way DBM suggested - a running start into the test rpm range. For example, if the test starts at 4K in 3rd gear, hit WOT at like 3k. The throttle will be wide open when the tach reaches the 4K rpm data point and no chance the throttle action will affect the time.

Any comparisons to Mike’s results will be subjective (bike set-up, rider weight, conditions. etc). My results will be used to compare to my results to find the “optimal” tune for my carb and setup.