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EFRA decision. 5 cells -1350gr

EFRA decision. 5 cells -1350gr

Old 11-19-2006, 07:59 PM
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Originally Posted by bxpitbull
In the yellow bars within the page, it'll read "Movie2" and "Movie1". I cant speak for what is going with folks here in the states on 4 and 5 cells, but those clips are not a good look for the reduction in cell(s).
I did click those but it's not a 5min race.

This one is:

JMRCA RACE
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Old 11-19-2006, 08:10 PM
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Originally Posted by Jochim_18
I did click those but it's not a 5min race.

This one is:

JMRCA RACE
True, but I clearly stated "clips" in my post. Thanks for posting the entire sloth-fest.
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Old 11-19-2006, 08:12 PM
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Originally Posted by Jochim_18
I did click those but it's not a 5min race.

This one is:

JMRCA RACE
they seem fast enough
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Old 11-19-2006, 09:32 PM
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Yap!! I think they are fast enough using 4 cells.... I'm going to experiment with GTB/6.5 with 4 cell and run against the 19T class at my club and see how it works out.

I'm switching to brushless forget cutting the comm, tuning motors
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Old 11-20-2006, 12:43 AM
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Well, a friend of mine tested 5cells with Orion BL system this Sunday. His thoughts are that car felt like he had 6cell with 8x1 motor soI don;t think it's too bad

If in addition have more reliable runs then go for it

At the JMRCA BL weren't allowed so speed was limited I guess

Nick
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Old 11-20-2006, 01:20 AM
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I don't see the point in refering to JRMCA rules of 4 cell brushed only configurations when EFRA voted for 5 cell with brushless allowed.

These are two completely different things.

5 cell with brushless is very fast.. with less load on equipment than 6 cell.
So unless you try it, please stop jumping in conclusions.
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Old 11-20-2006, 01:26 AM
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Originally Posted by nnick
Well, a friend of mine tested 5cells with Orion BL system this Sunday. His thoughts are that car felt like he had 6cell with 8x1 motor soI don;t think it's too bad

If in addition have more reliable runs then go for it

At the JMRCA BL weren't allowed so speed was limited I guess

Nick

And they might not have the problem of dumping...And probably not need 4 chargers to charge a single pack....!
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Old 11-20-2006, 01:29 AM
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Originally Posted by Jochim_18
I did click those but it's not a 5min race.

This one is:

JMRCA RACE
The above google link is the 6 cell 8 minute JMRCA finals from 2005. If you watched the whole video and pay attention to the timer on the lower right corner you would realise it is 8 minutes.

These links are short clips from the 5 min. 4 cell JMRCA finals of 2006

Masami:
http://www13.ocn.ne.jp/~mirage-j/gal...pB/06exp02.wmv

Hara:
http://www13.ocn.ne.jp/~mirage-j/gal...xp/06exp01.wmv

Both occasions aren't fast enough I think..

Next time try to post more accurately.
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Old 11-20-2006, 01:46 AM
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There is another bizzare side effect of all this.

We, as the RC industry, are NOT the main focus for battery manufacturers, we are, as I'm told, the VERY small end of the market. "Let's see, Black and decker ordered 200 million packs for drills today (with the only real requirement for them be that THEY WORK)... and some guy doing batterys for RC cars who bought a few hundred cells is griping about the IR and voltage..."

Just for the sake of argument, let's say that all 6 cell racing (world wide) becomes 5 cell. We just took our little piece of the market and dropped it another 16% (from 6 cells to 5).

Don't feel it would save anybody any money. Car designs, chassis parts, electronics will all be enhanced in different ways to accomodate the change.

I think it's sad that we now have outstanding electric power, and it's been decided that we are unable to handle the power, and are having it taken away, rather than work with it and manage it.

It ain't a car show, it's racing. It's supposed to be fast. Part of going fast is course management. Motors and batteries, for 99.99% of us, are no longer the limiting factor in our lap times. You pretty much have all the power and run time required to do about anything.

I can't remember the last time I saw anybody locally dump, or heard anybody gripe that somebody else had more battery or motor. I kind of like that.

There's something about it I personally don't like. Doesn't mean it's good, doesn't mean it's bad, it's just something...

Enough typing, let's get to the track!
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Old 11-20-2006, 02:22 AM
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Hi Bob

Please be aware of one very important thing in this case.
These rule changes are not made because the cars are going to fast, but only because the sport have problems with motors, and speedos overheating and blowing up. Everyone have to use fans and other cooling acessories to keep the equipment working for only 5 minutes.
This might not be the best or ultimative solution, but it works for now and will probably buy some time, untill we find the golden solution of them all.

Lets all try this and see if its really so bad. - And then think positive towards the future, and try to find the prober solution.


Sincerely

Søren Boy Holst
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Old 11-20-2006, 02:50 AM
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Originally Posted by John Doucakis
I don't see the point in refering to JRMCA rules of 4 cell brushed only configurations when EFRA voted for 5 cell with brushless allowed.

These are two completely different things.

5 cell with brushless is very fast.. with less load on equipment than 6 cell.
So unless you try it, please stop jumping in conclusions.
Perhaps so, but one of the strongest arguments at the AGM was that these cars will not work with 4 cell, due to different weight. New cars needed to be developed, everything was a disaster. From the one who got a car as a Christmas present, to the club driver. Only the factory drivers would have the possibility to have new and much needed gears. But still, Masami won with a 6-cell chassie configuration, just putting 4 cells in the car. So all that argument was nothing but politics and rubbish. As so often before. Agree?
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Old 11-20-2006, 03:10 AM
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Anders..

I see you follow what I write, so you can argue with me first chance you get!

Yes, I was surprised to see only small changes in chassis design for the JMRCA.

But think of this..
If the best Japanese drivers were going that slow, in regards to straight line speed, not corner speed, and on top of that were facing runtime issues..
I am sure it would have been too slow and too hard to make runtime for European outdoor tracks, which is the majority in Europe.

I cannot see the reason to implement a rule (4 cell) that makes cars too slow, requires the use of receiver pack, brings back the all important battery factor, just to solve a problem that occurs mainly in small indoor tracks.

I honestly believe that the 5 cell rule has made cars more reliable, without compromising speed.

What else do people want?
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Old 11-20-2006, 03:12 AM
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Originally Posted by ottoman
Man... I just watched the video from the JMRCA 4 cell mod touring car race... those cars look slow. Down load the "Movie" on this link. And yes its a 5 min race.

http://www13.ocn.ne.jp/~mirage-j/gallery/06exp.htm
I totally quote this!
I'll try to sommarize some things we've learned from the japan National Reports we read in another tread of this forum:

1) Let's look the videos, the cars are SLOW and what we see are the best equipped guys in the world on a relatively short track.. try to imagine us, normal drivers with stuff bought in the shop, on a big european style straight.. zzzzzzzzzzzzzzzzzz...

2) To take out any millivolt from the ferwer cells we'll soon see some exotic trick, Hara using 4 chargers is an example or in any case we'll see new chargers -spintek like- EXPENSIVE.

3) THEY DUMP!! the last lap of some of best drivers in the world were damping... one more time try to imagine us with our "normal" packs..

so.. are we sure that we're going in the right direction reducing cells??
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Old 11-20-2006, 03:17 AM
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Thanks Giuseppe d.

That's my point too.
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Old 11-20-2006, 03:22 AM
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Originally Posted by Giuseppe d.
1) Let's look the videos, the cars are SLOW and what we see are the best equipped guys in the world on a relatively short track.. try to imagine us, normal drivers with stuff bought in the shop, on a big european style straight.. zzzzzzzzzzzzzzzzzz...
Can't remember where I read it now but they were within a couple 10ths of the 6cell mod cars on the same layout, they might LOOK slow but that will be because of the smaller difference between corner speed and straightline speed......
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