WOT RPM's

[ob15]

Re: WOT RPM's

I believe so. You basically have 2 2 cylinder motors hooked together. Doesn't the 2C need ot be wrapped around to 2 plug wires? I can't remember which of the tachs I have but mine needs to be around 2 plug wires. It doesn't really matter. You'll know when you start the motor.

 

[vranasaurus]

Re: WOT RPM's

The 1C needs to be wrapped around two plug wires because it requires a spark every 180 degrees. So each plug fires once every revolution so two get one every 180 degrees you need two plug wires.

 

[vranasaurus]

Re: WOT RPM's

I ran my boat this weekend with my Tiny tach and my teleflex is within 50 RPM's of my tiny tach.<br /><br />Interesting development though is that my motor will no longer turn 5400 with the 17 it turns only 5100 at 32 MPH<br /><br />The 15 gets 5300 at 31.5 MPH.<br /><br />That sounds about right as far as RPM Diff because the 15 is cupped.<br /><br />So do I have to try and scrounge around for a 13 pitch prop in order to get my RPM's up.<br /><br />A 13 doesn't seem right for this boat.<br /><br />I am still thinking something else is wrong.<br /><br />A 90 should turn that 15 at higher RPM's, or am I just expecting too much from my motor?<br /><br />I am truly at my wit's end.