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Discussion Starter · #1 ·
just a quick post to let the members know we are checking motor codes and matching rpm to them we will have a list ready for this fridays ( 15th ) 1st round. any information will be greatfully recived on this matter as we wish to bring in eqaulity to keep the racing close .....jimbo

113 Posts
SCX RX Vintage (open frame, single magnet) tested 19,509 RPM/12v

SCX RX-41 16,400 RPM/12v; tested 14,378 RPM/12v

SCX F1 16,400 RPM/12v; tested 13,500-15,390 RPM/12v, tested 77 gcm/12v,

SCX RX-42 16,400 RPM/12v; tested 14,971-15,400 RPM/12v

SCX RX-81B 18,000 RPM/12v; tested 17,184 RPM/12v

SCX RX-42B 18,000 RPM/12v; tested 18,081 RPM/12v, tested 97 gcm/12v,

SCX RX-41B 18,000 RPM/12v; tested 18,256 RPM/12v

SCX Pro Turbo 18,000 RPM/12v; tested 20,100 RPM/12v

SCX Pro Turbo Plus 19,000 RPM/12v; tested 20,340 RPM/12v

SCX RX-62C 19,000 RPM/12v; tested 18,540-20,622 RPM/12v

SCX RX-91; tested 20,533 RPM/12v

SCX Pro Speed Double Rally 19,100 RPM/12v
135 gcm/12v

SCX Pro Speed 19,600 RPM/12v; tested 18,800-20,750 RPM/12v
140 gcm/12v; tested 123 gcm/12v

SCX Pro Speed RX-4H 25,000 RPM/12v; pre-production motors tested 25,546-26,397 RPM/12v, tested 152 gcm/12v

RX-42E Club Porsche same as Pro Speed

In general, SCX uses this system of "official" ratings, at 12 volts:
Motors with no number or an "A" at the end are rated at 16,400 rpm. (Like the RX-41, RX-42, RX-62 etc.)
Motors with a "B" are rated at 18,000 rpm. (Like the RX-42B)
Motors with a "C" are rated at 19,000 rpm. (Like the RX-62C)
Motors with a "D" are rated at 19,000 rpm. (Including the Pro Turbo Plus, and RX-81D which is also called the Pro Turbo 4x4).

From a chap called robert livingston writing on SCI magazine
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