Team Tekin Q&A

[DCM]

Originally Posted by andygray

Hi guys. Hmm, yes, I'm starting to think the receiver also. But that is so strange.

As I say, it's a spektrum DX2S receiver, but I don't know of any protection cut-outs that the receiver coudl have that would cause it to shutdown.

The car is a HPI Vorza Flux, I am only using 1 servo, a HPI SF-5 which is stock in the vorza. Yes, more I think about it the more I suspect the receiver.

Well, off to Spektrum to see if they can help me I guess.

- Andy

Whats your exact setup?

Spektrum is very sensitive to voltage.

[andygray]

Oh, by the way, does the RX8 have a linear or switching BEC?

[DCM]

I have no idea....

[Randy p]

Switching.

[Randy p]

Originally Posted by madonrc

purchased a tekin RS pro. Good no probs, fast, doing well with it, won a chamionship, all though found the brakes weak. Updated to the new system 2008 from 2003. Not as fast as the changes were not explained in english, only in computer , technical terms. Tried to go back to 2003 find the option had gone . Not happy. Found someone who had the 2003 system on there computer so went back to it. All happy again. Went to race on a Wed evening turned it on Nothing. No lights, but power was going through it as the servo was working. Boxed it up sent it off to the shop where i purchased it. 4/5 day pass by nothing. So i call them to find out they had not checked there mail box. 2 days later i phone back again to be told that they do not know what to do as RC disco have not sorted out with tekin the return policy and if i pay £15 they would replace it. But it would take a week. If not the shop would return it to me , i would then post it to USA (tekin) and have to wait for a answer. WHAT A JOKE. nearly 2 week's to get no where with a championship round on Sunday with no ESC. I feel we are being ripped off with stupid prices, ie almost £200 (when they must cost peanuts to make because when a new product comes out they almost half the price of a old product) and then not getting the support. This is not just a moan at Tekin its most distributors. The best service i have had is from schumacher. why can't they all be like that.

why dont rcdisco know what to do ??????

Your unit is likely fine. You cannot make adjustments with a 203 hotwire to a speedo with 208 installed. You simply need to "update" the esc with 203 software and it should come back to life.

This is why we take all the old software away from you, to help prevent this issue.

[Randy p]

Originally Posted by Buggy Driver

Randy,

I had a different problem recently: during a race the car stopped a few times and just sounded bad. In the next moment it went on without a problem. Some other driver told me it could be the sensor wire came undone just a little bit, as this had happened to him before, although with no Tekin. The next race the car drove fine again, but a few days ago it had some heavy hesitation from a standstill. After changing the motor I saw that one single lead of the sensor wire had come loose. Changed the cable and it was fine again.

So, the RS can drive with and without a sensor wire, but it seems that it can get problems when the cable isn´t completely off, like just one single lead off.
Maybe this is something which could be looked into, that the RS handles an even just slightly faulty sensor wire like it´s completely off to avoid being unable to drive on. Actually, my motor was strangely cooked when it had these heavy starting problems with the faulty cable (the speedo remained cool).

It would depend on the which wire. We can run without a sensor lead. But we will ALWAYS try to use sensors if we can. So you most likely got stuttering because we were trying to use them because we say 2 out of 3 for example.

[samd]

This is with the latest 208 Vegas


Can anyone tell me what sensorless timing setting the rs will use if set on TP 1-5 without a sensor cable?

[andygray]

Originally Posted by DCM

Whats your exact setup?

Spektrum is very sensitive to voltage.

My exact setup is:
HPI Vorza Flux
Tekin RX8 Speedy
Spektrum SR3300T receiver
Spektrum DX2S controller
2200kv brushless motor (the stock one that comes with the vorza)
1 servo: HPI SF-5 high torque metal gear servo
Battery: Vemon Li-POWER series 18.5v 3800mah 5s1p 35C hardcase battery pack with Deans connector

I have had a battery tester plugged in at the time that the receiver cut out and the battery was fine. Each cell had plenty of volts (eg 3.8 volts), and were within 0.05 volts of each other.

It would be interesting to see what voltage was coming down the line between the esc and receiver, but that's a little harder to do.

Any other ideas?

Thanks for the thoughts so far! no response from Spektrum as of yet....

- Andy

[DCM]

I would still say it is a Spektrum issue rather than an ESC issue. You need to run their power cap in one of the spare receiver slots.

If the receiver gets a voltage spike or drop, then it shuts down.

[DCM]

Originally Posted by samd

This is with the latest 208 Vegas


Can anyone tell me what sensorless timing setting the rs will use if set on TP 1-5 without a sensor cable?

email Randy for a quicker answer on that one.

[Randy p]

Originally Posted by samd

This is with the latest 208 Vegas


Can anyone tell me what sensorless timing setting the rs will use if set on TP 1-5 without a sensor cable?

80 is the default setting, 24 degrees of timing.

[samd]

Cheers

[andygray]

Originally Posted by DCM

I would still say it is a Spektrum issue rather than an ESC issue. You need to run their power cap in one of the spare receiver slots.

If the receiver gets a voltage spike or drop, then it shuts down.

Hmm, I think you are right. I have talked to Spektrum, and also to the guys at my LHS and they suspect something similar. I am arranging to get one installed as soon as I get my RX8 controller back from Tekin.

Thanks for the great advice!

- Andy

[andygray]

My RX8 esc has just died on the weekend :-( I am sending it to Tekin support under warranty (RA #11352), so hopefully they will repair/replace the unit.

Apparently, some older RX8 models had a flaw in the casing that caused the control boards to sometimes flex which in turn can cause failures such as the receiver losing power, and possible also failures like what has just happened to me where the entire ESC just plain died.

Randy, thanks for making your support great, and for monitoring this forum. Hopefully I'll get the RX8 controller back quickly so I can use my car again :-)

- Andy Gray
(from Australia)

[Randy p]

We'll take care of it Andy. We're on top of our service as always. Sorry to hear about your issue.

[offroadrc]

Why should i buy a tekin rx8 and not the MMM or ezrun?

i need a new esc and this time i want the quarantie that i have a good one.

[HarlowS]

You should buy a Tekin because you want race proven design, designed and tested updateable firmware, excellent support, a speedo that doesnt fry when it gets hot !!!! and finally to be ahead of the rest

Or you could buy one of the other brands and regret it, then end up buying a Tekin when yours fails.

Originally Posted by offroadrc

Why should i buy a tekin rx8 and not the MMM or ezrun?

i need a new esc and this time i want the quarantie that i have a good one.

[offroadrc]

Originally Posted by HarlowS

You should buy a Tekin because you want race proven design, designed and tested updateable firmware, excellent support, a speedo that doesnt fry when it gets hot !!!! and finally to be ahead of the rest

Or you could buy one of the other brands and regret it, then end up buying a Tekin when yours fails.

i allready had everything, novak, mgmcompro, mmm, ezrun, hobbyking 150.
now i realy want a good system that won't let me down.

[HarlowS]

...... now if you had only tried Tekin first.......

[discostu]

hey chaps

can anybody tell me where do i send my rs pro to be repaired in the uk.

stu rand