RPM question

[Larry B]

Whats a good RPM to have the motor running at with a SG pto system?

Made some changes to the blower pulley and the hoses and it was running 17hg with the wand on the floor and 200' of hose. This was what was showing on the gauge in the van. Adjusted the relief valve so its now at 15hg with the wand on the floor.

Now since there is room to play I am wondering whats the best RPM range to have the motor at because if I have to slow the motor down more I can still tighten up the relief valve to keep the 15hg?


Any input on this?

 

[Shawn Forsythe]

1500-1650(max)

Anything higher and you risk raising under-hood temps too high as well as overheating the catalytic converter.

Shawn

 

[Larry B]

1500-1650(max)

Anything higher and you risk raising under-hood temps too high as well as overheating the catalytic converter.

Shawn

Thanks Shawn

 

[Larry B]

Shawn

I just got back from having the van plugged in to check the settings by computer. With the machine running on high the rpm was setting at 1350.

With it running that low do you see any problems that could come from this?

I did adjust the relief valve as discussed and the gauge on the machine is now showing just over 15hg with 200' of hose and the wand on the floor. (I have no way of checking it at the end of the hose.)