Recent content by Walter Glover

Hooked up a motor and with the amp draw and voltage with assumed 80%EFF at a 0.8PF my dyno has 0.25hp losses at 860rpm. As I understand it inertia increases by velocity squared. 3x velocity = 9x hp loss. Therefore 0.75hp lost in spinning the drivetrain on my dyno. That helps the numbers some

Thinking of connecting an electric motor to measure drag in amps increase and see where that gets me

Getting 1.5hp for Husky 51 3.2hp for the 372xp FT 5.33hp for the ms660 FT Need more sturdy brake for the 660

Mounted and cal check with 6 pounds at 24” after torque arm and cal rod balanced out.

Red will do that tomorrow. Was excited to see the big gauge reading so nice!

New gauge air purged out with 15 pounds weight as per my shipping scale

Thinking on this stuff, Red would your setup provide Uncorrected numbers as in raw torque and rpm?

Nice gauge

A buddy just delivered a properly calibrated large scale pressure gauge. Also will upgrade the force sensor mounting for near frictionless action. Torque arm and caliper were made in such a way that they are balanced and bearing mounted. I will check calibration with a known weight Also recheck...

Nutball,I am using the dyno rpm and torque to get hp Is that not correct? 7.5 pounds torque at 2000 rpm = 2.85hp

Red, I have a 12” torque arm pressing on a hydraulic cylinder of my making such that 20 pounds reads 2000kpa. For rpm I use a mag pickup sensing the four bolt heads in sprocket into a tach adapter to drive the auto tach. Gearing at 4:1

What an impressive thread! Found this searching for dyno numbers. I have built a disk brake dyno and playing with a 372xp kit saw for testing dyno. I can only get 2.85hp out of it so far. My question is for Red as I see the graphs have corr torque and hp trends. Is that ‘corrected’ numbers and...

How do you mean Stihl style wears less?

Sounds good. Husky style rocks imo

Lightning, would you mind detailing how you modded your oiler and what the stroke length gain is? TIA