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Old 05-14-2007, 01:08 AM   #91
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No, mo doesn't mean the laitest speedies, he said a long time ago. I think LRP had a similar thing. They had sensors on the wheels and would limit the amount of throttle depending on the spool up time of the wheels. Would be cool to play with one.
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Old 05-14-2007, 01:14 AM   #92
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It was at the worlds at Basildon, UK, 1991(?), they had sensors on front and rear wheels, plus a gyro, and it worked so well, it was banned.

LRP, I might dig out the magazine with the pic in it if I can be bothered.
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Old 05-14-2007, 02:06 AM   #93
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Well, now you have sensor buildin in every BL motor, time to do some traction control....
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Old 05-14-2007, 02:29 AM   #94
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Quote:
Originally Posted by DA_cookie_monst
It was at the worlds at Basildon, UK, 1991(?), they had sensors on front and rear wheels, plus a gyro, and it worked so well, it was banned.
Hereth introduction to rule 3.13 of the 1/10th electric curcuit of the BRCA... History lesson over hehe
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Old 05-14-2007, 09:48 AM   #95
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GM, CS-Electronic and LRP had such traction control system based on wheel sensors in those days. The GM and CS systems also hit the shops, on the LRP Im not sure if it was for team use only or for the public also.
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Old 05-14-2007, 11:19 AM   #96
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it was made to evaluate it's usefulness, the Basildon track was realy slick, so it gave so much of an advantage over others, it wasnt fare, lol.
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Old 05-15-2007, 01:20 PM   #97
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Quote:
Originally Posted by ttso
Well, now you have sensor buildin in every BL motor, time to do some traction control....
Sensors on wheels = traction control = advantage = unfair!

Sensored motors = advantage??

Sensors vs no sensors.. interesting, technically there's pros and cons

Working developing a competition brushless ESC I know which I prefer to design and work with.. but if sensorless means more sales and more $$$ then maybe it's worth doing or at least thinking about.

Brushless systems both sensored and sensorless are certainly great to be involved in with technology advancing all the time. The pay back comes when you win out on the track. It's the winning that will most likely decide it either way, at least in the competition part of the market!
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Old 05-15-2007, 02:49 PM   #98
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There would have to be some sort of sensor at the wheels. Simply watching the motor spool up at an accelerated rate would not be enough.

You need to compare front and rear wheel speeds. This is how it's done on real cars. We compare the drive wheel with either a non drive wheel or even a front to rear bias. This determines wheel slippage. You must also take into account left to rear comparison. If you had a car that was "diffing" out a lot on the track the system would shut it down.

It's doable. Illegal for now. Still fun to think about. It would give you a true abs system as well. Problem is that on dirt the car would more then likely never stop!

I'm still more interested into the primitive suspension we all use...where' the reactive dampening from motocross and F1...I know that it's been tried but we have the technology now to at least get 'em in 1/8 scales...
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Old 05-15-2007, 03:00 PM   #99
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Traction control, certainly doable especially these days with the performance and speed of microcontrollers. As you say illegal for now, as DA says worked so well it was banned!

Quote:
Originally Posted by DA_cookie_monst
It was at the worlds at Basildon, UK, 1991(?), they had sensors on front and rear wheels, plus a gyro, and it worked so well, it was banned.

LRP, I might dig out the magazine with the pic in it if I can be bothered.
It was 1993, I was there and it did work very well! It must be in RRC, there's no pic of it in the Nov 1993 Model Cars magazine.

These days it's not about traction control, it's all about LiPo's and brushless etc.
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Old 05-15-2007, 03:31 PM   #100
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There was a pic, in one of the mags, Jurgens Cougar 95 Team, with little sensors on the wheels, just got to dig it out.

Tyres have moved on since then, and the cars.
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Old 05-15-2007, 03:37 PM   #101
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Yeah i've got that old pic somewhere as well!!! Very trick - like you say, banned before i think it was even used in anger, that's how good it was.

Like Terry says, there are pros and cons to all designs. My personal view was always that sensored "must be" better. However, i have driven a GM system in the wet with no sensors, and it was good, no issues with feel in the low grip conditions, so it is possible.
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Old 05-15-2007, 03:37 PM   #102
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Quote:
Originally Posted by DA_cookie_monst
There was a pic, in one of the mags, Jurgens Cougar 95 Team, with little sensors on the wheels, just got to dig it out..
Yeah I'm sure I've seen it in one of the mags, can't remember which one!

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Tyres have moved on since then, and the cars.
Tyres, cars, motors and electronics have moved on since then!
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Old 05-16-2007, 10:34 AM   #103
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I hope we never see traction control back in RC (or any other motorsport). Thats what the driver is for
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Old 05-16-2007, 10:37 AM   #104
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Quote:
Originally Posted by Jack Smash
I hope we never see traction control back in RC (or any other motorsport). Thats what the driver is for
not that I race..but bash around but I think that would be like playing with a corked bat...besides it fun to spin out...
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Old 05-16-2007, 11:32 AM   #105
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Quote:
Originally Posted by Terry_S
Yeah I'm sure I've seen it in one of the mags, can't remember which one!



Tyres, cars, motors and electronics have moved on since then!
Very true, but without them tyres, none of the others would of helped, lol.
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