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From: "Chrysanthos Kanellopoulos" <xchrysk-at-otenet.gr>
Subject: Fw: guide plates and speed2 [TANKS]
Date: Sun, 2 Sep 2007 12:22:50 +0300
Reply-To: tanks-at-rctankcombat.com

 
Sorry, most related webpages give no load RPM of 500 for the DeWalts 960s, so my motors with a 25 kgr vehicle weight and a speed of 443 RPM operate at 88% of no-load speed. I can see how this could go down to 75% on steep slopes.
Chrys
 
----- Original Message -----
Sent: Sunday, September 02, 2007 12:14 PM
Subject: Fw: guide plates and speed2

RPM speed is 0-475 for the low gear and no load for the DeWalts 960 18V. with a speed of 440 RPM and a load of 25 kgrs the motors operate at 92-93% and a loss of about 7-8%.
 
The speed on teh 9 cm-dia.-drive wheels, with the load of 25 kgr, is 443 RPM. (7.500 ms : 60 : 0.09 m. : 3.1416) It sounds awfully lot or I have almost no loss and teh torque is more than plenty. Joe said about 30 messages back that "Most of the time our tank motors operate at about 75% of no-load speed which is close to maximum efficiency."  What is the RPM speed of the DeWalt 960's - 18V in teh low gear and no load to find out my loss? I guess I should go find it.
 
Chrys K.