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mcguyver · November 16th, 2011, 23:52

The 490a was designed to turn that planetary arrangement and an M170 cylinder at 22 rnds/sec. or about 1320 rpm. This is under load.

The only way to effectively change the gear ratio for more tourque and less speed is to replace the sun gear, which Systema did for the SuperMAX guns. They increase the OD and as such added more teeth. This is why you can't use MAX cylinders in a SuperMAX gun that have not had extra material removed from the sun gear track on the cylinder.

The 490a is a very powerful motor. I wouldn't be surprised if the no-load RPM was in the 35000 area. The weak point of the system though is the motor. Ones that work well will give years of service. Others die within weeks. But, there is a fix for that, and it was not a design flaw but a manufacturing one.

November 16th, 2011, 23:52	#10
mcguyver Trader rating Join Date: Aug 2005 Location: Northern Alberta	The 490a was designed to turn that planetary arrangement and an M170 cylinder at 22 rnds/sec. or about 1320 rpm. This is under load. The only way to effectively change the gear ratio for more tourque and less speed is to replace the sun gear, which Systema did for the SuperMAX guns. They increase the OD and as such added more teeth. This is why you can't use MAX cylinders in a SuperMAX gun that have not had extra material removed from the sun gear track on the cylinder. The 490a is a very powerful motor. I wouldn't be surprised if the no-load RPM was in the 35000 area. The weak point of the system though is the motor. Ones that work well will give years of service. Others die within weeks. But, there is a fix for that, and it was not a design flaw but a manufacturing one. __________________ Age verifier Northern Alberta Democracy is two wolves and a sheep discussing what's for dinner. Freedom is the wolves limping away while the sheep reloads. Never confuse freedom with democracy.