Get another 2G from your SCX RX motors

Squeezing out those last few tenths

Re: Get another 2G from your SCX RX motors

Postby kenneth » Mon 17 Nov, 2008 4:22 pm

Here is where i got my figures for my post before and is independent of any manufacturer or commercial entity.
Tested” means at least one sample was tested for RPM at the listed voltage, under no load, with this tachometer:
www.checkline.com/tachometers/CDT-1000HD

the first figures are Manufacturers / the latter are s tested.


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, 2.8W/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, 4.5W/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 19,600 RPM/12v; tested 19,414(new), 20,717(run-in)RPM/12v
140 gcm/12v; tested 123 gcm/12v 6.4W/12v
SCX Pro RX-4H 25,000 RPM/12v; tested 27,282 RPM/12v
`It is better to enter a turn slow & come out fast, than to enter a turn fast & come out dead` Ferry Porsche
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Re: Get another 2G from your SCX RX motors

Postby Cyph » Mon 17 Nov, 2008 6:52 pm

Like my signature says, this slot car racing is all shenanigans basically. We have driving shenanigans, marshalling shenanigans, deslot shenanigans, computer shenanigans, food and drinking shenanigans, etc etc.

Shenanigans or Bust!

I do not believe I'll be able to attend the racing this Saturday, I seem to have a ticket to the Rugby League World Cup final.
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Re: Get another 2G from your SCX RX motors

Postby wixwacing » Tue 18 Nov, 2008 10:44 pm

Anyone fancy a pint?
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When I'm not racing slotcars,
I'm out in the back yard, burning food!!

When I win, it's because of my talent, not my car or my controller!
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Re: Get another 2G from your SCX RX motors

Postby paulthetexan » Wed 19 Nov, 2008 8:04 am

I'll av arfff !
Go hard or Go home
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Re: Get another 2G from your SCX RX motors

Postby kenneth » Wed 19 Nov, 2008 8:56 am

May i introduce Kenneth & Kenneth
Enjoy!!
http://au.youtube.com/watch?v=eVT9FlY_0rY
`It is better to enter a turn slow & come out fast, than to enter a turn fast & come out dead` Ferry Porsche
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Re: Get another 2G from your SCX RX motors

Postby yankfaraway » Sun 23 Nov, 2008 8:23 am

Hello again, guys. Things got pretty busy around here for a while, and I am just now back in the saddle. I think I have the idea now. If I understand it properly, the trick is to hold the square tube brush holder and skew it, rather than twist the entire endbell to achieve the same result. Is that it?

By the way, I'll think of you as I finish this pint and again when I drink the next one. Cheers!

Rob
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Re: Get another 2G from your SCX RX motors

Postby wixwacing » Sun 23 Nov, 2008 1:39 pm

If I understand it properly, the trick is to hold the square tube brush holder and skew it, rather than twist the entire endbell to achieve the same result. Is that it?



You got it Rob, but remember to twist it in the DIRECTION OF ROTATION! That is, based on the direction of rotation when the motor is wired according to the model direction of travel!! ie. The slotcar standard wiring is to have (+) positive to the right hand braid looking in the direction of travel, therefore, if you are going to do this tune, ensure the motor is connected to jump leads so that it is rotating in the same direction as when it is installed in the model? Is that confusing. If the (+) is on the wrong terminal you will be tuning the motor to run backwards! I hope that hasn't totally confused everybody! I will do a short video when I get back from holiday.
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When I'm not racing slotcars,
I'm out in the back yard, burning food!!

When I win, it's because of my talent, not my car or my controller!
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Re: Get another 2G from your SCX RX motors

Postby wixwacing » Mon 09 Nov, 2009 10:52 pm

I took my SCX F40 racing last saturday (07/11/09) and the motive force was an unopened RX41 with polished poles and brush timing changed. The event was for Slot.it cars on a technical circuit with a couple of usable straights (average lap time 11 secs.) After a few tangles in the melee of my first heat I soon settled into the rythem. Fifteen heats later I ended up third overall from fifteen drivers. The model had about six grams extra weight and MJK's to the rear. Not a bad result for an RX41!!
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When I'm not racing slotcars,
I'm out in the back yard, burning food!!

When I win, it's because of my talent, not my car or my controller!
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