What rpm motor?

Dave.616 · #1 12-05-2011, 01:40 PM

What RPM & g/cm motor is in this car a unpainted stock motor?

mikeinclover · #2 12-05-2011, 02:18 PM

Dave did you not believe me when I told you that it was a SC-11 that comes in that car? The motor is 20,000 R.P.M. and it has 260 gr/cm

Dave.616 · #3 12-05-2011, 02:34 PM

It runs with a 25,000rpm Slot.it motor at Battle Front hard to believe a 20,000RPM motor could do that?

boopiejones · #4 12-05-2011, 03:09 PM

i had an SC11 and had to swap it out for something slower, which ended up being a slot it orange endbell (rated at 21,500 rpm, by the way)

i realize that the SC11 is only rated 20k, but it felt like 25k (or more) to me. not sure if anyone has ever tested one to confirm? maybe the torque had something to do with it. the slot car news motor list hasn't posted test results for this motor, but they posted results for a different scaleauto "20,000 rpm" motor:

Scaleauto SC08 new version Tech-1 "silver" (FC-130) 20,000 RPM/12v, tested 24,636 RPM/12v

perhaps this was an anomaly, or perhaps scaleauto motors are underrated at the factory?

Robert Livingston · #5 12-05-2011, 04:23 PM

Some are underrated and some are overrated. The second-type SC08 (re-armatured to 24k) was probably patterned on the Slot.It 21.5k orange endbell, which revs 23k in many cases. This threw a monkey wrench into a certain proxy race in which I was involved, as we had specified the first-type SC08 as it barely revved 19k, let alone its rated 20k (overrated by Scaleauto). Scaleauto didn't bother to change the designation with the second type SC08. Now there an SC08b, with even more torque, but at least they gave it a letter "b" to distinguish it.

Scaleracing · #6 12-09-2011, 12:19 PM

The first Radicals come with the SC-0011 motor, this is rated at 20,000 rpm with 7.5 grams of magnetic effect and 260 gr/cm of torque.

The latest Radicals ( coming soon ) will come with the SC-0025 motor which is rated at 21,000 rpm with 14.5 grams of magnetic effect and 320 gr/cm of torque.

Stock gear ratio for all Radicals is 9/27.

Not to be confused with the SC-0012 which came unpainted in earlier 1/24th scale Scaleauto cars 25,000 rpm 8 grams of magnetic effect and 280 gr/cm of torque. The motors sold separately were yellow.

The Scaleauto motors have evolved through several changes there are tech 1 ( earlier lower spec 20,000 rpm ) and tech 1 later spec with same rpm but more torque. The can design on early tech 1, 2, 3 motors was different to the later higher spec tech series. Early motors have a series of small vent holes, later cans have a large oval hole on one side. The labels show different spec on the earlier motors example tech 1 early SC-0011 is 20,000 rpm 190 gr/cm torque, later are labeled 20,000 rpm 260 gr/cm torque. The new SC-0011b is 20,000 rpm with 205 gr/cm of torqued quoted.

Now we are seeing a b at the end of the numbers such as SC-008b 20,000 rpm with 4.5 grams of magnetic effect and 216 gr/cm of torque.

SC-008b, SC-0011b and SC-0014b all have the same spec but different cans, SC-008b is a double shaft S can, SC-0011b is a long can and SC-0014b is a short can with a metal end cap.

Motors are classed tech 1 ( 20,000 rpm ) tech 2 25,000 rpm and tech 3 30,000 rpm. Then there is the Outlaw series which varies depending on can type S can is 36,000 rpm, Long Can is 33,000 rpm, short metal can is 30,000 rpm small FF can is 38,000 rpm.

Then there are three motors stand alone SC-0025 Sprinter open long can 21,000 rpm 320 gr/cm, SC-0026 Endurance closed long can 22,000 rpm 320 gr/cm and SC-0006 endbell drive S can 30,000 rpm 185 gr/cm.

Also 2 ball bearing motors SC-0020 dual drive S can 20,000 rpm 170 gr/cm and SC-0021 closed long can 20,000 rpm 250 gr/cm. Also a Carrera replacement SC-0001 20,000 rpm no torque given only amp draw of 0.7 amps.

Hope this helps some.

roveros · #7 01-27-2012, 04:38 PM

Quote:

Originally Posted by Dave.616

It runs with a 25,000rpm Slot.it motor at Battle Front hard to believe a 20,000RPM motor could do that?

I would be pretty sure the torque rating would be higher than a slot.it 25 either white or yellow endbell. The yellow being significantly more powerful than the white (Its the torque thing again) The sc11 is a good motor and goes well. The newer sc25 is more powerful again and over done for a home track. (really need to play with the voltage) The weird thing is they are still geared 9/27 and for me i would gear it 10/23 or even bigger if i could get a decent mesh. All that torque will push a big gear easily.

As an aside it was my sc08 that caused all the drama in the RAA. When i was pretty new to slots. One good thing about it was it gave me a very steep learning curve on motors.