Electrathon America Forum

Members Login
Username 
 
Password 
    Remember Me  
Post Info TOPIC: Hydraulic load cell for motor testing


Senior Member

Status: Offline
Posts: 241
Date:
Hydraulic load cell for motor testing
Permalink  
 


So I built a hydraulic load cell so I can test the efficiency effects of things like gear ratios, controller settings, operating voltage, etc.

I used a jackshaft so I could run the same sprockets on the test rig as on my car while keeping the hydraulic pump speed within its normal operating range.  The pump outputs to a hose with a ball valve and a pressure gauge.  The jackshaft has a speedometer calibrated to the size of the drive wheel of my car. The motor is run at a speed that gives the desired wheel speed and then the ball valve is closed to the point that the amperage draw reproduces the same load that I have seen in race conditions. The pressure, speed, voltage, and amperage draw are noted and then become the baseline for comparison of any subsequent changes. If I can find a change that allows for the same speed and pressure to be achieved at a lesser wattage then I have improved my efficiency.

Should make for some fun testing.



__________________

Build something and race it!



Senior Member

Status: Offline
Posts: 241
Date:
Permalink  
 

IMG_20161023_004041.jpg



Attachments
__________________

Build something and race it!



Senior Member

Status: Offline
Posts: 241
Date:
Permalink  
 

IMG_20160727_171224281.jpg



Attachments
__________________

Build something and race it!



Senior Member

Status: Offline
Posts: 301
Date:
Permalink  
 

That's a interesting way to do testing.
That might be a good way to see how efficient a motor is actually running if testing was to be taken that far.

Zaine

__________________


Senior Member

Status: Offline
Posts: 241
Date:
Permalink  
 

I finally made a brief demo video of the load cell in action.
Testing an Etek motor on 36v.
youtu.be/HVWARUXDpuk

__________________

Build something and race it!

Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.