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-   -   Viper RC - (https://www.rctech.net/forum/radio-electronics/455152-viper-rc.html)

mdmaxx 04-05-2013 04:41 PM


Originally Posted by Wildcat1971 (Post 12013426)
yes sir. And dont take offense because I didnt read the instructions either. lol. But your doing it wrong. Follow these steps exactly

1) turn on radio
2) turn on esc
3) wait for it to fully boot up
4) push the button for about 1-2 seconds until the orange lights light up
5) plug in the PG
6) have fun with the viper esc.


If you plug it in before you enter the programming mode, you will get the failed to connect every time.

I got it working! Thanks for the help! another stupid question is...I'm guessing the pc link works the same way?

blue t 04-05-2013 06:00 PM


Originally Posted by nikos2002 (Post 12012324)
blue -- if the motor temp was low, you should check the Protection tab on the ProGauge, the motor cut off temp default should be around 220-230. This temperature is measured on the rotor not the can - so it will be higher that what people "think". If you raise it a little and run the car again, of course use your temp gun to be sure.

Blanotn -- Thanks? Did it fly further than other speed controls and motors you have thrown in the past or present? Would certainly be interested in finding out why you thought that PM, would be interested helping you get it set up correctly.

Spider -- is you looking at the using the VST maybe 6.5 - you can always reduce Forward Power on the indoor track if its too much inside.

Thanks for the help. I had the esc set on profile 1 as I'm running this in a truggy with a tekin 2250. When I checked it the motor cut off temp was disabled and the esc was at 220. I didn't look at the solid green light to see if it was on but will check it.

andresohc 04-05-2013 06:05 PM

I have the Viper vx4.39 system and it is wicked fast.

nikos2002 04-05-2013 08:22 PM

mdmaxx - glad you got it working, yes PC Link works the same way as ProGauge.

blue - re-reading your posts, you mention esc temps were low, but what were motor temps?? Just because the VTX8 is a beast - and awesome (sorry, inserting personal opinion) we are seeing guys getting upset that they having issues running 20-25 minutes at racing speeds -- I don't know if any of the racing systems are designed for that -- 10-12 sure, but there is always limit somewhere -- just saying......

Interesting discussion about comparing sensored to sensorless - on our case VTX8 to Copperhead. Like many pointed out - Copperhead was designed to be a Traxxas replacement economy system -- some racers figured out it worked pretty darn well in racing. Like someone pointed out - hard to beat for the price point. That being said. I drove another companies $300+ system in dual mode (which means sensorless, most of time) - it felt like the Copperhead - when the Start Power is set correctly. Comparing it to a sensored system like the VTX8, yes, its going to be very different - but it was meant to be different -- hence the price point. Both effective, both can fast -- it becomes a personal driver choice. But, please be fair, rate it apples to apples. Not apples to T-Bone Steak.

Jim Hustins 04-06-2013 05:25 AM

20-25 minutes would be insane. I have not been to a track where a 1/8th electric race was over 15 minutes. 15 minutes would be a pushing it to the limit. Most 1/8th electric races are 5 minutes with a 7 minute main at the tracks that I go to.

My VTX8 is sitting on my bench waiting for RC-Monster to finish my chassis. I already downloaded the A61.4 software on my laptop.

taztal3 04-06-2013 06:49 AM

i need send out my new viper vtx8 to upgrade but i need fill out on paper .
i cant find on viper website ? thanks what is rma ?

Jim Hustins 04-06-2013 07:10 AM


Originally Posted by taztal3 (Post 12015773)
i need send out my new viper vtx8 to upgrade but i need fill out on paper .
i cant find on viper website ? thanks what is rma ?

Here is a link to the RMA page to send it in for updating.
http://www.viper-rc.com/contact.php

nikos2002 04-06-2013 01:13 PM

:nod::nod::nod:^^^^^^^^^^^^:tire::tire::tire::tire ::tire:

mdmaxx 04-06-2013 02:34 PM

any idea's on why i can't get my brakes to work? I turned up the esc(vtx10r) to 100% for brake and the expo on the radio is 150% and it won't stop at all. Thanks.

H0LESH0T 04-06-2013 04:45 PM


Originally Posted by nikos2002 (Post 12014861)
blue - re-reading your posts, you mention esc temps were low, but what were motor temps?? Just because the VTX8 is a beast - and awesome (sorry, inserting personal opinion) we are seeing guys getting upset that they having issues running 20-25 minutes at racing speeds -- I don't know if any of the racing systems are designed for that -- 10-12 sure, but there is always limit somewhere -- just saying......

What issues are they having? Temp issues? So you shouldn't run batteries back to back?

blue t 04-06-2013 05:54 PM

[QUOTE=nikos2002;12014861]mdmaxx - glad you got it working, yes PC Link works the same way as ProGauge.

blue - re-reading your posts, you mention esc temps were low, but what were motor temps?? Just because the VTX8 is a beast - and awesome (sorry, inserting personal opinion) we are seeing guys getting upset that they having issues running 20-25 minutes at racing speeds -- I don't know if any of the racing systems are designed for that -- 10-12 sure, but there is always limit somewhere -- just saying......

The motor temp was 140deg and was checked with two different temp guns. This is happening after around 7mins of run time.

AndrewTom 04-06-2013 06:08 PM


Originally Posted by mdmaxx (Post 12016844)
any idea's on why i can't get my brakes to work? I turned up the esc(vtx10r) to 100% for brake and the expo on the radio is 150% and it won't stop at all. Thanks.

first check the EPA or travel setting on your Radio.
set it to 100 if its not already and recalibrate.

sickpuppy1 04-06-2013 07:34 PM

Well, just ordered a VTX8 for my SCT410....hope I like it! Sure I will though.

Wildcat1971 04-07-2013 08:12 AM

Welp, after 4 weeks of trying, a local gave up on the vtx10r/vts4.5 combo for the SCTE. Temps were just too high. The esc was hitting the 220 cutoff and the motor 250ish. This was with a 12 tooth pinion. He never made it past the 4 minute mark before ever heating. He had the punch at 20%, motor timing at 0 deg. he played with the pwm on brake and throttle and no dice. So the esc is going into hos short course an the motor will probably be sold off and trash canned. He think the first time he ran it with the 14 t pinion the motor got too hot and from then on he was chasing a dying motor. And the esc just made too much heat. Oh, well. He is going to try hobbywing esc/motor next time. I think the esc needed a fan and it would be fine. But the motor was never what he wanted. He really wants a little more instant power like a 4 pole. And yes, I told him about the Chopper head originally, but sensorless is out of the question. He does not like them.

CaptainHowdyt13 04-07-2013 10:59 AM

My VTX8 was SOLID for me this past weekend at Charge Em Up IV at Flowood Indoor RC in Flowood, MS. Took 2nd in 1/8 Open E Buggy

The braking on this ESC to me, feels light years better than the other ESCs I have used in 1/8 in the past.

http://i1101.photobucket.com/albums/...ps1b2970b1.jpg


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