DrQuintezz
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But I see 9 cars lined up at the starting grid…
8 racing cars and 1 safetycar 😉
Before the race the safetycar will check the circuit just like the F1
someone buy my plane ticket (King RX7)
Same problem. 24 hours airplane trip 🙁
18.000 miles away.
I can MEGA boost my tranmitter and sent only my car 🙂The last picture is circuit Japan including
a bridge made of white plastic window decoration. 🙂Dave,
What’s your email adress?
I’ve got 2 pictures for youDr.Q
Waiting……………………
Yes we received the 60MHz Crystal.
We use a Bitchar 57MHz for modification.
We put the Crystal in de Tranmitter and we
adjusted the coil in the car for maximum range.
And now we have frequency number 8
and there are 8 cars in compettion now 🙂
Number 9??? This wil use infrared (38KHz).
There is no rf (wide) frequency free anymoreIt’s a frequency problem.
When you’ve got 2 cars and you place the car
together on the track they will control each other. Your car is only responding on the
controller. The car is responding on de MF
frequency.I’ll think that the receiver in the car
is not adjusted well. You can test is with a radio scanner (receiver). The subaru is 35MHz I’ll Guess. Set the radio scanner (receiver)
on 35MHz and adjust the scanner when you hear
noise from your controller (press a button)
Load your car on the controller and put
the car to the antenna of the radio scanner.
Adjust the scanner and listen to the noise.
I’ll think that the receiver is adjusted
on 33 or 37MHz. Becarefull by adjusting
your receivercoil. Use a non metalic mini
screwdriver and i’ll think it will help.53MHz crystal got a problem with the
27MHz car (2 x 27 = 54) Stupid!!!Now we want to try 60 MHz
We take an 57MHz car and change this
to 60. A 60MHz crystal is not
a standar crystal. 🙁
there is a company that can make this
crystal but it takes weeks.Waiting……………………
ph2t
I’ll hope that the coil in the car can change 7MHz
(27 – 7 = 20) and watch out when you use a 40 MHz
car (2 x 20 = 40)The bandwide of al transmitters is more then
400KHz. I said this some weeks ago.
The modulation is AM and not FM
When I use an FM receiver i’ll measured
400 KHz but when i’ll use a FM-receiver it’s
more.On the chip RX2 and TX2 you can change
the control pulses. When 1 car has
100K ohm and the other uses 180K ohm
then you can jam the other car
but you cannot control the
other car.At this moment we only can change frequencies
in the neighbourhood (35 to 32 and 27 to 22)
There is a possibility (i don’t no
at this moment) to change a capacitor in the car
and you can change the receive frequency
in every frequency you want. bUt how and which one???Which car frequencies do you got ph2t???
Yes here we are again.
We learn a lot about the Bitchar last weeks.
and YES we can make use more frequencies.When you buy a 35MHz Bitchar you can change
it to 32MHz. You only must buy an 32MHz Crystal
and you must adjust the coil in the car.Take of the 35MHz crystal of the transmitter an place the 32MHz crystal in it.
The car does not work any more.
Adjust the coil of the car (anti clockwise)
till you have the best receiving. (see also topic
on this site to adjust for the best distance)Easy way
Now we want to try this with a 49MHz car
and put an 53MHz crystal in it.
A 53MHz crystal is not easy to find but
we will try.We also want to use Infrared communication
Is there somebody who can help us.
There is a Chines site but we cannot understand
Chinese 🙂Look at the schematic of the transmitter
and you will find C5, Q1, Q2 and so on.
Easy wayPH2T
There is a difference between the Bensu and
the Bitchar Transmitters.The Bitchar transmitter is without
C8 and C5 and they use different
resistor values around 2 transistor
Q1 and Q2. There is also difference between
the coil values in the Bensu and Bitchar
transmitters. We think if we change
this components we will have a smaller
bandwide. We will wait for the new components
now. If we have new results i’ll put the information here.We did some research on the transmitter
schematic and the Bitchar and Bensu transmitter.
The transmitter schematic is the schematic
from the Bensu and not the Bitchar.
The Bitchar transmitter has less components.
The bandwide of the Bitchar transmitter is
smaller then the Bensu transmitter.
We’ll change the bandwide of all the transmitters
because we want to race with 12 drivers or more.
Please give us some time for research.
When we’ll find some tips and tricks
we’ll post it here.I am surprised that a 35Mhz and a 35.6Mhz bit both work simultaneously.
Q My scanner says that the transmitter is not so wide. 35.590 ? 35.610MHz. The ?problem? is the receiver. The receiver seems like +/- 0.25MHz wide.
The Bensu must use a different signal coding chipset. I thought they were all Rx2c/Tx2c though!
Q I don?t no. The sound is like the same when i listen to my radio-scanner
Interesting that you say the Tomy BitCharg frequencies are 27, 35.6, 40, 45.6, 49, and 57Mhz.
The four I know for sure (Tomy BCG frequencies) are….
27.000 45.000 35.002 57.000MhzQ Did you test it with a scanner / frequency counter? My frequencies are also written on the crystals.
Where do the NN.6Mhz frequencies come from?
Q I don?t no. 0.2MHz doesn?t work 0.6 is ok.
Just to let you know, we have experienced interference problems with transmitters that are less than 6 to 8 Mhz apart. The 35/40/45/49 combinations sometimes dont work real well. Have you found a way to counteract this?
Q You must stand 1 meter from the other drivers that will help a lot.
When you put al the transmitter and cars in a circle of 1 meter it will be a mass.
Our circuits lengths are 10 meters or more and then we can stand 1 meter from eachother.micro, maybe he has a microsizer or compact at 49 Mhz? And I have interference with running a Bensu and bit together, although I don’t think the Bensu Tx runs the bit car, but the reverse is true. Will have to check into it?
Q We tested a Bitchar transmitter on a Bensu. It works only backwards = forwards. We don?t tested a Bensu transmitter on a Bitchar. I?ll test it this week..
DrQuintezz, what are the stock Bensu motors rated at. I know this was discussed on the forum before, but can’t remember
Q Bitchar 2.2 motor standard. The Bensu has 2.6 motor standard.
We put 2.6 in our cars and we put a variableresistor (50 Ohm 20-turns) between the motor and accu. When we changed the circuit we need another setup like tires, more/less speed and so on. I?ll think we are pro?s.soon the microsizers will have 3 at 27mhz and 3 at 49…. just wait for the new pros.. they will be using subchanels!!!
Q Subchannels 26.9, 27.5, 28.1 and so on. I?ll think it?s possible. We need more information
about the receiver. Is there a radio amateur in da house?
Each frequency with 3 subchannels = 18 cars.
A race with 12 drivers or more is great. When we have 20 drivers we can do the formula one 🙂 -
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