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Old 04-02-2003, 07:35 PM   #16
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Quote:
Originally posted by rtypec
Well tonight's the fight that you've been waiting for. 19T spec at socal in preparation for the Reedy Race. There'll be a pretty big contigent of all the cars that you guys mentioned below. Evo3's, Barracuda's and yes the new Yokomo SD should all be there!

Any word on the out come this week at SoCal??

-Dave
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Old 04-02-2003, 08:15 PM   #17
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Well, last night I drove like poo poo hehe. I'll post results and who drove what as soon as they're made available.
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Old 04-02-2003, 10:46 PM   #18
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rtypec,

nah...you didn't drive like poo poo...you just got to get some of those nervous gitters out of you before the main. You should run a practice pack before the main, and pretend that was the main, and do all your flips, rolls, and t-bones during practice, then when you get to the main, you're all set!

I think the results from SoCal in the 19T battle was:

1st: MR-4TCSD
2nd: TC3
3rd: Barracuda R2

We are still working out the setups on the R2, and we are getting better and better each week We'll be back next Tuesday to do "battle" again. All in all, it was a lot of fun last night

Steve Wang
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Old 04-02-2003, 10:52 PM   #19
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Steve - who drove the Yok?
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Old 04-02-2003, 11:00 PM   #20
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Rod- It was Pat T
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Old 04-02-2003, 11:58 PM   #21
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Quote:
Originally posted by SpeedTech

1st: MR-4TCSD
2nd: TC3
3rd: Barracuda R2
The competition was shafted?!?
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Old 04-03-2003, 04:46 AM   #22
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Hi guys. Greetings from Malta.

I think that last Sunday we had the definative chance to test a shaft drive against a belt drive. This is how it happened.

My son (TC3) and I (MR4 Sp) both entered a 60 metre drag meeting. I prepared both cars. Both used the Corally Pro Team 3000HV cells, the same motors, same gearing, same tyres, wheels and inserts, and same Novak GT7 speedos set exactly the same. Both weighed in at just over 1500 grams (our minimum weight limit).

As I explained, both ran identical motors prepared by myself. Both Corally 9 doubles, both timed the same, both the same brushes and springs.

In all three passes we ran together Josh just beat me every time. There was perhaps 3/10ths of a second between us each time.

Clearly he had an advantage somewhere. By elimination it could only have been the shaft drive on the TC3. He won the class.

I can't wait for my Yoke SD !

Regards

Joe from sunny Malta.
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Old 04-03-2003, 05:18 AM   #23
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I think there are more differences than the transmission type. I believe there's different ball bearings in those cars. Maintenance and wear also makes a difference. What about bodies and wings? And ball diff tightness. What about charging? Greasing / lubing matters also. About gearing if the internal ratio are different, it should be compensated in the spur/pinon choise. But I believe you've alredy compensated for that.

But I believe there's much more into it than regular speed, and that is driving style. Especially on a track. Some people are better suited with belts, other are better of with shaft. Simply because of different driving styles.
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Old 04-03-2003, 07:04 AM   #24
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Hi Cole. Greetings from Malta.

Just to answer a few of your questions.

Starting with the last. Driving style. This was a simple 60 metre drag race from a standing start. I know he's faster than me around a circuit, but this was just a full throttle blast. Any idiot can do that........even me! We were both using the auto start on the transmitters too. Josh did 3.2 seconds, 3.2 seconds and 3.3 seconds. I did 3.5, 3.5 and 3.5. I don't think we could have been more consistant.

I prepare both cars. I think I actually put more effort into my MR4 since I use it alot more than Josh runs his TC3. All bearings on both cars are of the best quality available, clean and free. Diffs are set about the same. I drive both cars so they are both set up to my own driving style. Same tyres, same Stratus 2 bodyshells, and same wings. If anything mine was cut down even further, to give less drag.

You are right about internal ratios being different but I was refering to overall ratios being identical.

If we get on a circuit for 5 minutes racing of course things are very different again. There I have to gear down considerably more than the Tc3 is geared. On the same gearing I only run for 4 minutes with the MR4 Sp as opposed to Josh running 5.5 minutes with the TC3. And remember he normally laps about a second a lap quicker than I do, since he drives that much better.

We all know the TC3 is so much more efficient. Hopefully it is just the shaft drive which does it, in which case I look forward to receiving my new Yoke SD even more.

What car do you run?

Regards

Joe from sunny Malta.
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Old 04-03-2003, 08:59 AM   #25
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This statement is taken from TB EVO3 threads by GoldFinger,

PS: This is a logical FACT you might consider

--------------------------------------
Hi, all

Im very attracted to see the replies number of this forum.

Please allow me to gave something to consider about shaft driven RC Touring car.

No matter how well the technology they(Mfg) use to build a shaft driven rc car , they will not be able to put an even load to both side of wfheel !! Its because the rotation of main shaft drive is pointing to only one side and will cause more load to that side of car.

Dont believe it?
Check your, your friends or anyone's car thats have a differential on it (the real ones). No mfg will put the diff right in the middle of the rear or front axle! Where the rotation is pointing, is where they put a longer distance(wheel axle) to compensate the load cause by torque from shaft drive.

A 1/8 buggy car driver will not notice a big difference in this, since they were "heavyweight" already and the long suspension travel is already able to make quick weight transfer thus perfectly arbsorb the extra energy cause by the shaft drive rotation.

But for on road (specially electric) I dont believe it !

I believe Mr Bervoets from serpent realize this. And I believe that his company would be the one that dont build this kind of car.

Relax, this is only my point of view.....
For novice driver like me, it will be difficult to make a good setup. Off course the "factory driver" will have no problem to handle this kind of car. Since they have an "appropriate-compensation" already.

As for the pricing of the Mr. Chaidasurya version,I believe its only around USD 410.00 not more than that. Just checked in the one of online site.

Good racing!
"Learn or pay technicians!"

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Old 04-03-2003, 11:26 AM   #26
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Hi Pyramid,

Which website did you find that Mr. Chaidasurya version ??
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Old 04-03-2003, 11:31 AM   #27
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Hello John, greetings from the cold Denmark up north.

I'm driving a two month old HPI RS4 Pro2 with one-way diff. Carpet, stock class.

I now realize that you guys have been very carefull about the experiment. So I wont start arguing about connectors, charging methods, greasing and "about the same" diff tightness. I think you've done what can be done to equalize the cars, except the transmission.

Maybe I wasnt clear enough about driving style: I did realize it was a drag race, but what I meant, was that on a track (circuit), one cant consider one type of drivetrain better than another.

I believe that shaft suits some persons better and belts suits other persons.

I still get surprised, when I read and hear all the hype about the shafts. It's like people think shaft automatically outperform belts. But they are not. The companies like us to think this way, because they earn money on it.

The torque steer is a good example. Tamiya have the motor on one side, but moved to the other. HPI seems to work hard on this issue also. The TC3 have a-symmetrical suspension geometry to compensate. I do believe that I'm pretty good in setting up my car, but I think it's pretty hard to do an a-symmetrical setup.

I've talked to a driver, which compete in european class. What he like about his Tamiya shaft car, is not the speed / torque, but the direct feel, when he move the trigger. He like the car being so responsive to inputs.

Now I think many of us know that a responsive car aint suited to most rookies. Usually, they are better of with a more forgiving car.

I'm not saying the Yok SD is bad. Actually, I believe it's one of the best cars out there. Al I'm saying, is that there's too much hype about shafts and too little facts.
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Old 04-03-2003, 08:07 PM   #28
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Quote:
Originally posted by Awesome
Hi Pyramid,

Which website did you find that Mr. Chaidasurya version ??
Pictures? I think I saw couple of them in TB EVO3 threads.
As for prices, click on my signature
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Old 04-03-2003, 08:15 PM   #29
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I'm a rookie... I started out w/ a shaft drive car too, and never even considered Belts. (TL02, TC3, then TB evo2, and now, TB Evo3.) I've driven belt cars too, even bought a 414M2, which I ended up letting my brother in law use. I'm not saying the 414 is not an outstanding car by any means, it's just that, being so used to shaft cars, Everytime I punch the trigger, it just felt sluggish... Torque steer is a definite, but for running stock, I don't really feel it that much. And a little torque steer is a small price to pay for being able to punch out of the corner much faster than I ever did w/ the 414M2. Tamiya has been doin the shaft thing even before some of these companies have been around! So I trust their expertise more than any other company, specially now that they moved into the more competitive racing status. W/ the Evo3, this is the first time I've ended a race w/ the biggest smile on my face . rookie runnign a 1way, and I didn't even spin out! can't say the same for my TC3=P. heheh.. so I know wat shafts can do
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Old 04-03-2003, 08:58 PM   #30
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Quote:
Originally posted by Pyramid
Pictures? I think I saw couple of them in TB EVO3 threads.
As for prices, click on my signature
Thanks but I looking where Tamiya has announced the updated Evo3. Couldn't find anything on Tamiya website.
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