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Old 09-09-2004, 01:31 AM   #1
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Default Novak VS Tekin

Hi all,

I am not going to introduce an argurement but a interesting discussion. I am a huge tekin fans but I would like to stay neutal on this discussion

Novak has just introduced the newest speedo GTX with the newest technology while the new owner of Tekin feel full of confident in selling their 5 year old product G-10 pro. Some say Tekin has worked great and moved ahead 5 years, some say Novak should be better as it can keep on its business while tekin cannot. But I really want to know who has done the best. Does anyone would like to share the experience or does anybody here have good knowledge on this field who can have a deeper understand on the design of speedo from both co. Some interesting facts we have are:


1. Tekin using no external Cap nor Diode 5 years ago without any problem while Novak can only introduce internal diode in this generation (5 years later).

2. Tekin using PIC16c72 chips which seems to be less advance as Novak.

3. Novak using newest generation of fet only on GTX while tekin using IRF7413 (a little larger than the one use in most of top-end speedo) for motor drive.


My Own experience:
I was actually impressed by how well tekin is. I use to have a GT7 and also think that it is one of the best. However they seems to have different strength of area. For tekin, its strength is on the performance such as punch, throttle response, and etc. While Novak(GT7) has a better battery management, profile setting, efficiency, and less stress on the motor. For myself, Tekin and Novak are the same good but in different area. How about yours. Just feel free to share the experience!!
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Old 09-09-2004, 01:50 AM   #2
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HEllo,

interesting discussion...

All I know is, in its time, I fried three G10's, two V12's, and two HFX's (well, I had to try something with the money I had left!), before I went to the Cyclone's... and I'm still running the latter. I don't care much for what FET's are inside if I can't pass the checkered flag!

Good luck to Tekin anyway!

Paul

PS: Well, one of my cyclones blew up last month after 4 years of use, but I still think it got amortized pretty nicely. And I sent it to Novak, they sent me a new one back
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Old 09-09-2004, 01:56 AM   #3
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OH thanks for the experience sharing. BTW how did you fired those speedos?? I mean at what condition?
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Old 09-09-2004, 02:06 AM   #4
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Hi again,

I don't think you'll believe me, but just normal use, ie mod TC racing with 10 to 12 turn motors (I went to the Cyclone's pretty much when the first Pana 3000's came out, ie late 99 I think), rubbers on asphalt. Granted, it was in texas (hot hot hot), but still... That's why when I found a speedo that was holding the abuse, I stack to it!

About G10's: I know people who've had great luck with them, and others with terrible problems (me for instance, but not only). As I said, passing the checkered flag in working condition is priority #1 to me!

Later,
Paul
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Old 09-09-2004, 02:11 AM   #5
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OIC. As I run only Stock (23T) and I also hear others has fired a couple of this speedo so I would like to know more. But new tekin said this speedo need at 1 click drag brake to prevent this.... So.

Oh too far away from the topic. Lets talk more about the feel on those speedos!!!!
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Old 09-09-2004, 09:10 AM   #6
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the reason Tekin speedos don't have a schottky mounted on the motor is that they still incorporated it into the internal casing. One of the reasons manufacturers went to external schottkys is that they do generate some heat and were quite often mounted near the brake fets which accelerated brake fade. Additionally with that component outside the case, the case itself could be made smaller. I had G-10, but actually prefered the G-12 series (mostily due to the current limiter).

While they are selling their older equipment right now, trust me there's new Tekin gear a-coming.
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Old 09-09-2004, 09:26 AM   #7
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Something heard at the ROAR Nats after a driver fried a Quantum and put in a Tekin (or two):

"Why is my car so slow, it's like I've got no power at all."

Response from other driver:

"Well it's like showing up to the worlds with a Street Weapon and complaining your slow..."

Charlie showed us a production GTX last weekend and the thing is super dialed.
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Old 09-09-2004, 09:30 AM   #8
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Rod, did you happen to see what Speedo Marty was using in GT1?

Tekin 411-G2 And you have to admit, besides Linger, MPH's car was one of the fastest on track.
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Old 09-09-2004, 09:35 AM   #9
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Lol Gary, Marty's always fast no matter what he puts into his cars... I was just sharing an experience from the race and I suppose you had to be there to hear the sarcasm in their voices. It was hella funny.
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Old 09-09-2004, 08:56 PM   #10
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Hi RC Driver Gary,

As far as I know, there is no diode on the motor for G10 is because not only tekin incorporate a small internal one in the case (I through it should be under 1A), but also using patend circult to absorb the fly back current.

According to the spec. of the speedo, a normal G-10 has a 32 A quad (done by circult) regenerated schocky diode. Where g-10 pro has a 64 A one. A can type (mount on the motor) conventional schocky diode can only handle around 3A current. A surface mounted type adopted by KO and Muchmore is in a size around 2 mm X 4 mm but also limited to 3A. A fet type diode from GM can only handle 5A. If there is not such extremely small diode which can handle 30+ current, then for a 32A diode will required 10 surface mount type schocky diode connected together. To handke 64A current, 21 pieces are needed. As I know the super diode from KO (4 surface mount diodes in a small circult board) is cost around 80 HKdollars. If tekin using diodes for it, it will equal to using 5 super diode which is 400HKD. Then tekin G-10 is a very barget ESC. BTW, I have opened a G-10 pro and see no such kind of diode except the one between the battery + and motor -.
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Old 09-09-2004, 10:05 PM   #11
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Hi all,

Here is some more info about the 64A quad schocky diode does in G-10

Quote
"
It is pretty complicated and patented. In short it
disipates the flyback energy with synchronous timed
switching of components on the board rather than just
shorting it out at the motor with a diode. This allows us
to sneak a little more energy into the regen path to the
battery after we handle the initial surge. It looks like
around a 10 turn motor it begins to get overloaded. We are
suggesting a motor diode below 10 turn.

Team Tekin Support
"

Thanks for someone who provide this info!!

Cheers!
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Old 09-09-2004, 10:23 PM   #12
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Quote:
Originally posted by RC Driver Gary
the reason Tekin speedos don't have a schottky mounted on the motor is that they still incorporated it into the internal casing. One of the reasons manufacturers went to external schottkys is that they do generate some heat and were quite often mounted near the brake fets which accelerated brake fade. Additionally with that component outside the case, the case itself could be made smaller. I had G-10, but actually prefered the G-12 series (mostily due to the current limiter).

While they are selling their older equipment right now, trust me there's new Tekin gear a-coming.
The new speedos are due to be smaller in size. Updated software and hardware with the same advanced technology incorporated into every unit. Although Tekin appears to be getting back on their feet, the rest of the current line of speedos are just now catching up to what Tekin had 5-6 yrs ago.
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Old 09-09-2004, 10:23 PM   #13
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Quote:
Originally posted by mr4-tc sp
Quote
"
It is pretty complicated and patented. In short it
disipates the flyback energy with synchronous timed
switching of components on the board rather than just
shorting it out at the motor with a diode. This allows us
to sneak a little more energy into the regen path to the
battery after we handle the initial surge. It looks like
around a 10 turn motor it begins to get overloaded. We are
suggesting a motor diode below 10 turn.

Team Tekin Support
"
This is great info!
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Old 09-09-2004, 10:47 PM   #14
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Hi all.
what's difference on old G10 and G10 Pro?
thank for your information.
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Old 09-10-2004, 12:16 AM   #15
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Refer to the fly back current circult, I think the basic circult design is the same. But G-10 is able to handle 32A current where G-10 pro is able to handle 64A. Tekin replies that when G-10 pro was designated, the lowest turn of motor is 10. So the fly back current handling circult is limited to 10T. With lower turn, another diode should be mounted in the motor to share the load.

For others, G-10 and pro have the following different:

1. Circult layout and component: G-10 pro seems to be more complicated but better circult layout. Better component such as slim size cap and resistent. All the component are surface mount and high grade.

2. G-10 uses total 6 traditional type large Fets with trimed on its heat sink. But G-10 pro has used 20 IRF7413 small Fets instead. I suppose the driver would be different.

3. G-10 pro has a 5 pin data port on the top of the ESC which is suppose to be used for some add-on feature.

4. Rumor said G-10 pro has a better/more efficient software on the speedo. The newest software make it more stable and efficient with some bugs fixed. G-10 pro+ has revised and improve a little bit on this area.

Thats all I know!
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