Viper RC -
#9829
Joined: Jan 2003
Posts: 8,616
From: New Jersey
high speed mode on the radio is intended for servos. Channel 2 would be for a throttle servo. Since you are using channel 2 for the ESC, you don't need it on high speed mode.
In the past, I have found that many radios when in high speed mode cause issues. They MAY mimic a bad sensor wire. It's a simple way to check. Just turn it off without changing anything else and see if it goes away
In the past, I have found that many radios when in high speed mode cause issues. They MAY mimic a bad sensor wire. It's a simple way to check. Just turn it off without changing anything else and see if it goes away
#9832
Tech Regular
Joined: Jul 2013
Posts: 383
From: Denver, CO
I'm worried I'm going to burn the thing up. I love my Viper stuff but I need to figure this out or each ESC I have is gonna be stuck with 1 vehicle.
#9833
I did this and the new solder flows great but the stock solder still seems to have a firm grip on the wire... doesn't even get loose.
I'm worried I'm going to burn the thing up. I love my Viper stuff but I need to figure this out or each ESC I have is gonna be stuck with 1 vehicle.
I'm worried I'm going to burn the thing up. I love my Viper stuff but I need to figure this out or each ESC I have is gonna be stuck with 1 vehicle.

You do not want to hold the soldering iron on the ESC for too long. You will transfer too much heat and damage it.
I will do a video to show how it is done when I can.
#9834
Tech Regular
Joined: Jul 2013
Posts: 383
From: Denver, CO
I use a Trakpower 950 and to desolder the factory wires I turn it up to 800. I use liquid flux and help it with some more solder. The factory does a great job making sure that the wires are soldered on.
You do not want to hold the soldering iron on the ESC for too long. You will transfer too much heat and damage it.
I will do a video to show how it is done when I can.

You do not want to hold the soldering iron on the ESC for too long. You will transfer too much heat and damage it.
I will do a video to show how it is done when I can.
I tried a bit hotter but it didn't make a difference. I really don't think I'm doing anything wrong from a technique standpoint. My bullet connectors, motors, etc all go fine.
Nikos, do you know what kind of solder is used in the factory? Is it a lead free or something with a higher melting point?
#9835
Holy cow that's hot. I normally solder at like 650.
I tried a bit hotter but it didn't make a difference. I really don't think I'm doing anything wrong from a technique standpoint. My bullet connectors, motors, etc all go fine.
Nikos, do you know what kind of solder is used in the factory? Is it a lead free or something with a higher melting point?
I tried a bit hotter but it didn't make a difference. I really don't think I'm doing anything wrong from a technique standpoint. My bullet connectors, motors, etc all go fine.
Nikos, do you know what kind of solder is used in the factory? Is it a lead free or something with a higher melting point?
#9836
Seems like you can get the top surface to melt at lower temps but in order to get all the way down to the solder lug it needs to be a bit hotter. Whoever they have doing their soldering is a stud muffin.
#9838
So I ran my Vtx10/7.5 for the first time in my B44.2 this weekend. It worked great, but it seemed to be lacking some punch. For example, I couldn't make the double/ triple rythm section at my Track. I could hit the double, but going into the triple I was casing the top of the last jump cuz the rip I needed wasn't There. The speed on the straight was impressive and the brakes worked Great, I just need a little more Punch. Any suggestions? P.s. running profile#2 and haven't touched the Ez link
#9839
So I ran my Vtx10/7.5 for the first time in my B44.2 this weekend. It worked great, but it seemed to be lacking some punch. For example, I couldn't make the double/ triple rythm section at my Track. I could hit the double, but going into the triple I was casing the top of the last jump cuz the rip I needed wasn't There. The speed on the straight was impressive and the brakes worked Great, I just need a little more Punch. Any suggestions? P.s. running profile#2 and haven't touched the Ez link
#9840
Work on turning up the punch control and turning down Throttle PWM Frequency on the ESC. Stock for Profile #2 is 60 with Throttle PWM at 1600. I had the same issue with my Schumacher CAT K1 this weekend with a VTX10R and VST 8.5 (first outing with the car) but was able to correct it by going up to 80 on Punch Control and turning the Throttle PWM Frequency down to 9600, though 8000 would probably be even better.



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