Either those people are running some serious amp sucking servos or you're just trying to start something. Most people are only using between 40 and 80 mah per 8 minute run. I myself was using about 60 mah. I would run my tiny little 300mah pack 2 to 3 runs on a charge. Probably could go more but just wanted to be sure.

As for the BD, I have yet to see one that could keep up with a properly set-up and driven Tekin 203, much less 208 so you can keep your expensive, un-upgradeable soon to be paperweight.

Ricky had some issues but it turned out to be his regulator. Me, I just used a diode. No problems at all. Want to try a LiFe pack this winter.

I'm running 1/12-- 13.5 w/ Tekin on carpet out here in California--and I'm only using 70 to 80mah per 9 to 10 minute run!! I've got a 250mah pack and I charge it every 2 heats is all. And it only takes 150 to 160mah to charge it full again. I'm using a digital Hitec servo for steering. That's it!!
FYI
Tim

Your assesment of the bec/rx pack is very accurate. There's no cheating going on wuth the BD. It's a great product. It's just retarded that it has to be sent in for a simple software upgrade.

My electronics package is simple: Futaba 9650 servo, set so there is NO overrun. I use maybe 50mah per run. If your endpoints aren't properly set you'll burn through WAY more mah per run. If you set it up properly, you should make 3 runs with ease.

I ain't start something, its just what I have seen here locally. It may just be poor setup like you guys have said. BD is upgradeable, its just not a huge talking point. So far it isn't close to needing it.

As for Tekin being fast, they are been beaten by pretty much everything in my area at the moment. It seems to have a very narrow window to get its performance right up there... Something others speedo's don't have much problem with. I think most people still running Tekin do so because they think somehow they will get another update that provides a huge speed increase, so they hang on and wait.

I can back up Dragonfire in respect to some local drivers using way more than 50mah from their receiver pack. I may well be just about servo's but also some people have found that with 203 you lose some performance if you turn the ESC switch off. With the switch on it seems that you chew through a bit more of you receiver battery. Some people have even dumped their 200mah within 8min. It seems many others have had no problems! Thats the great thing about RcTech, people from around the world can share knowledge and help each other.

As far as comparing performance of different esc's, thats not so easy in my opinion. I believe it can only be done at big events when fields of quality drivers line up against each other. Just as we have seen the BD's wallop the competition at some club races, I am sure others have seen Tekin or LRP do the same at their local club. A lot depends how well drivers can set up their ESC/gearing/motor timing and also driving has a lot to do with it. A very good driver who can carry more corner speed can gear up a tooth or 2 over the competition and appear to have more power. Credit must be given to Tekin for continuously improving their products via firmware just as Advanced Electronics deserves credit for pioneering the technology that has seen massive improvements of speed in our sport.

Now to the real argument. How much is 1/12th way cooler than all the other classes?:lol:

I didnt see the previous discussion, but to me it seems the rules havent been changed.

I cant say anything about how the pack plugs in to the esc. But technically speaking to me its not a BEC if its got a battery!
Hence then name Battery Eliminator!!!!

As i said strictly speaking the rules effectively state that a receiver pack must be plugged into the receiver.

For me when i was running a tekin with the tekin 203/10.5 sensored mode i would use 110 mah each time when the esc was turned on. Was a pain with the 200 mah life pack as i couldnt get two runs.

If i forgot to turn the esc on it only seemed to use 60-70mah but to me it seemed the car had less power (dont know if it was a mind thing though)

Ive just brought a R12, went to install a Futaba S9650 to find its too wide, argh... what servos are going to fit in ?? I cant seem to find much specs of the mounting tab widths of KO or JR servos.

The Yokomo R12 has a 38mm wide center to center for the servo point

please help..

i found this photo as a referance for the servo i need but i dont know what it is..

http://i235.photobucket.com/albums/e...s-yokr12-1.jpg

From AARCMCC
3.1.7 The maximum of number sub C cells allowed:
Six (6) for Stock & Super Stock ISTC classes,
Five (5) for modified ISTC class
Four (4) for 1/12th scale
For the purpose of motive power, cooling fans, radio equipment and transponders only in all car classes,
and must conform to the battery section rules in ELECTRIC MOTORS AND BATTERIES.
A receiver battery pack must only supply power to radio receivers for its operation and the control
only of addition equipment listed: speed controls, servos and transponders for their operation. No
other devices will be powered from a receiver pack.

As stated above it doesn't mention where you plug it in, only what it can be used for. Hard to believe its such a big deal.

So the real question is... Why does the Tekin use more power (rx pack) and seem to go faster when you switch it on with a receiver pack? If the motor is pulling from the RX pack it is putting it under a massive load that is unsafe. What happens if you remove a wire from the receiver plug and turn it on (ie the red wire)?

Naoto uses Sanwa radios, so i guess it is a Sanwa servo.

Here is some testing that i did last year with boosters and the Tekin.
http://www.rctech.net/forum/6357275-post303.html
One day when i get my hands on a fried one i will looking into what is sucking all the power.

Testing
 

Jesus Gareth,
You can tell your single.:)

I think thats pretty clear the receiver battery must only supply power to the radio receiver.
By plugging it into the ESC you are supply power to the esc which is then supplying power to the receiver. There is no way for a scruitneer to be able to tell what the esc is doing with the power.

In my opinion, if it were legal to do that regulatory bodies would need to get sample escs, reverse engineer them and then verify they are legal and put them on a list. Otherwise anyone could rock up with their own esc and you would never know what is happening.

As for the tekin that is something i have said around the tracks. I know functionality is different when the esc is off. It doesnt have a voltage cut off when it is off (which to me would theoretically mean that if the esc is off it is not legal, but then again voltage cut offs dont seem to do a lot in 12th scale). Tekin would have to comment on what other functionality does, doesnt or kind of works when the esc is off.

Regarding my post about the servo in the Yokomo R12, Ive narrowed it down to the JR DS line of servos, but which one is it ? help would be appreciated.

I have a feeling its the DS 3517MG but it only has 51oz at 6v, is that enuff ? ive been running a futaba 9650 in the HB12 and its like 158oz at 6v

edit: rethink.. maybe its the DS3421 as thats 75oz unit..

http://i235.photobucket.com/albums/e...y/JR3517mg.jpg

Mephyx
 

Hi all..
Wanting some info/ feedback on the Mephyx 1/12 from RC Devil?
Any one had a go at this yet?


About booster's/reciever packs...
Just get an LRP SXX Super Stock, and this saves ALL your problems..Works well as a 1/12 speedy, and it has advanced timming/boost as well....

My thoughts any way....