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Old 2008.01.20, 04:45 AM   #1
Wolf
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Belt Drive Differential System (BDDS) from TGR

Innovation Spirit

At TGR we always search, think, brainstorm on what we can do to evolve this scene.
Now it comes; The ultimate transmission differential with infinite gear ratio.





Its totally a unique design by TGR. It is belt driven, it is steel, it is small and fluent in action. We've tested this system for several months in our factory test track away from the crowd. For the last several weekends we've started to use it with people who comes to our track. Everybody noticed how quiet does our car go. First they thought about a perfect mesh. But when our car was alone in the track and people started to hear even the servo sound from the car at the end of the straight; secret was over! We've opened the hood and the same question arised

WHY??

BECAUSE MOTORS NEEDS THIS
Most highend racers are aware that 130 sized motors' timing are reverse reatarted. This is due to mass production of motorcans and hobby usage is really low. Many people observes that their cars go faster and with more punch when it goes reverse. Another symptom of this problem is the AWD's which performs almost the same speeds with 2WDs despite the gear ratio. Since motors used with reversed polarity in AWDs those timing error auto corrects it self.
However we couldn't add more gears to 2WD to correct spinning direction. Solution is simple. Using a belt instead of gears results in a correct direction spin for the motor, regarding its timing.



BECAUSE RACERS NEED MORE & MORE GEAR RATIOS THAN THEY HAVE
Since it has no teeths but has wheels, all you have to do is to adjust your pinion or spur radius. Just you name it. You need a pinion with 3mm radius or 2,5. Ah you need a little more punch? Then how about 2.225 or would you prefer 2.1234? You can even create your very own and secret pinion for your motors' or track's need.




BECAUSE WE DON'T WANT TO CARRY THE WEIGHT OF PRESSURE PLATES IN OUR DIFFS
All differentials on the market has D cut or even worse O cut pressure plates to transfer the action. We thought if we use hardened steel as the caps and we can get rid of large heavy pressureplates. It is even harder than the common pressure plates which are infact used as washers in the industry. Moreover it is lighter than conventional cap+pressure plate combination.



BECAUSE wE WANTED TO HAVE AN OUTER TUNED DIFF BUT IT SHOULD BE REALLY TUNED!!

Most racers like the idea of tuning of the diffs from the outer nut. However many diffs on the market has problems when you need a realy tight differential. Due to ball size versus ballbearing cage thickness issue, you can not over tighten most differentials. Solution to this was also simple. With the cost of extra machining we've moved the ball bearing just a little into pressure cap. Here it goes. A differential which is really adjusted and adjustment is from the outer nut.

All those reasons led us to this unique innovative design.




Now lets take a look at other features of TGR Belt Driven Differential System (BDDS)

Steel shaft, caps, wheel adapter.
Hear treated extra hardened pressure caps
Extra Lightened 8 Ball Spur
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Old 2008.01.20, 05:25 AM   #2
Flashsp-2
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Wolf, that is simply amazing. Hopefully those motors will arrive before you guys head to the toy fair. I imagine that thing is going to make quite the showing with that new belt drive system...
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Old 2008.01.20, 07:42 AM   #3
xoxide
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Yes this is smart! I want one! So will they fit with just a normal MR-02 ir do you have to have a TGR?
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Old 2008.01.20, 08:01 AM   #4
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It fits to MR02 also
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Old 2008.01.20, 08:48 AM   #5
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the wonders never cease
i need to get my hands on one!!!!
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Old 2008.01.20, 09:31 AM   #6
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i'd really like to see one of these in action myself.
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