Q&A Forum
Hi
l have problem with the rpm sensor/ trigger wheel. It show a rpm of 2500-3000 when the engine idle at 1800-1900 rpm. so about 1000 rpm wrong.
l think the problem is the trigger wheel l have made. see picture below
If l make a new trigger wheel , what should l change ?
Outer diameter so distance between teeth will be wider and maybe also wider teeth?
best regards
glenn
That wheel should work. Not a lot of teeth though, is this an engine brake? Check out this link
Otherwise two possible causes:
- You have not set the Number of pulses per revolution correctly
- Gear ratio is wrong
yes it is a engine brake!
pulses per revolution is set to 12 , that must be correct?
under the tab gear ratio setup l have the settings as picture below.
maybe someting here iS wrong?
OK, engine brake, then 12 teeth is fine.
Yes, you put 12 pulses per revolution. But for an engine dyno, the gear ratio is 1, unless you have a gear box. So for Engine RPM source, you select "Set gear ratio manually". Set it to 1 and it should be fine!
thank you 😊