When using a 2s lipo or 6 cell Nimh the voltage is probably near 6v. When you go to 3s lipo the voltage to the servo will drop significantly.
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Wraith Beginners Guide
- Thread starter Harley
- Start date
When using a 2s lipo or 6 cell Nimh the voltage is probably near 6v. When you go to 3s lipo the voltage to the servo will drop significantly.
madkawi650
Rock Crawler
Harley, I'm not doubting that you are correct, but why would servo voltage be less if running 3s? Just wondering .. I'm trying to absorb all the info I can.
Thanks
Sent from my highly abused iPhone using Tapatalk
Thanks
Sent from my highly abused iPhone using Tapatalk
Honestly I am only vaguely familiar with how the internal circuit works. As the voltage goes up the power output from the internal BEC goes down. Maybe I can get Holmes to expand on it.
skid
Rock Crawler
Bec can only do a fixed amount of wattage. The equation for watts is volts x amps. So as volts go up, the amps must come down to equal the same wattage. I think.....
Yeah it's been about 6 years since my last physics class so the equations escape me at times. That is roughly the equation I was recalling but couldn't put ink to paper so to speak.
madkawi650
Rock Crawler
Completely get it now.. It's a watts thing really and not a voltage thing.. Like my 5amp charger that charges up to 6s, but is only 50 watts.. It will do a 2s at 5 amp but as soon as I try 3s it drops to 4.4amps.. 3s= 11.1volts * 4.4 = 48.84watts.. Or very near the 50watt limit of my charger.. So in the BEC world It would work the same way. There would be a total max watts.
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Sent from my highly abused iPhone using Tapatalk
Stburr91
Quarry Creeper
Are you guys using the MIP drive shafts and the traxxas pins cutting off the parts of the pin that hangs out of the drive shafts? It seems the pin will hit the back side of the transmission cover if it isn't cut.
Francois
Quarry Creeper
I have a question about BEC. I run lipo 3s but my ESC is HH BR-XL with an internal BEC of 6 volts and 5 amps...Do I need to put an external BEC ? I think that I don t need due to my new ESC but if specialist can confirm...
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I am here: http://maps.google.com/maps?ll=30.078772,-95.460034
Axial Wraith and Losi SCTE
I don't run the cover so I don't cut it. I don't really care about the cover.
Depends on your servo. Big servos still need a BEC. If you're over 300oz/in I would just suggest grabbing one.
kyrzrone
Rock Stacker
Harley,
First off, thanks for all the info you have posted about your Wraith. I'm new to RC and getting a Wraith for Christmas. So, I've been doing a lot of reading on the forum and trying learn all I can without totally confusing myself. Anyway, you have listed as using MIP CVD Driveshafts for the AX10 without dig. I was looking on the MIP website and see they have a MIP CVD Driveshaft specifically for the Wraith. Just curious, if there is a reason for using the AX10 CVD over the Wraith CVD? Or is the Wraith CVD a new product?
First off, thanks for all the info you have posted about your Wraith. I'm new to RC and getting a Wraith for Christmas. So, I've been doing a lot of reading on the forum and trying learn all I can without totally confusing myself. Anyway, you have listed as using MIP CVD Driveshafts for the AX10 without dig. I was looking on the MIP website and see they have a MIP CVD Driveshaft specifically for the Wraith. Just curious, if there is a reason for using the AX10 CVD over the Wraith CVD? Or is the Wraith CVD a new product?
That is a new product is all. I'm sure that it will be a good choice.
Francois
Quarry Creeper
Hello guys, I have a wraith little bit modified but I want to stay more scale than crawler. By the way, I want to improve the crawling performance of it, so my question is : 4WS or Dig ?
Here some pics
My upgrades are:
Torquemaster 35 T and BR-XL
Strong steering servo
Vanquish Steering ling
All links from Vanquish
Ripsaw 35
Axial CVD
STRC C hub and knuckles
Front battery 3S 1550 mah
Soft springs 1.04 lbs front and rear
Gearing 15x87
Thank you
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I am here: http://maps.google.com/maps?ll=30.078899,-95.460185
Axial Wraith and Losi SCTE
Here some pics
My upgrades are:
Torquemaster 35 T and BR-XL
Strong steering servo
Vanquish Steering ling
All links from Vanquish
Ripsaw 35
Axial CVD
STRC C hub and knuckles
Front battery 3S 1550 mah
Soft springs 1.04 lbs front and rear
Gearing 15x87
Thank you
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I am here: http://maps.google.com/maps?ll=30.078899,-95.460185
Axial Wraith and Losi SCTE
I ran dig and 4WS in my Wraith at first. After a very short time I took the dig out. With 4WS I just did not see it needed at all.
guidetti_angelo
Rock Crawler
Did you try more advantage with 4ws then dig?
I was planning to buy a Vanquish dig for my wraith..
Is it direct fit on stock wraith tranny?
The 4WS was more useful and I never found myself using the dig.
To add a VP dig you need to buy a new transmission case for the AX10 or SCX10 as well.
Francois
Quarry Creeper
Ok thanks a lot.
Before 4WS, I have to change my internal transmission because I've just explode something during practice...Torquemaster 35 turns is really the master of torque......I'll going to full metal pinions....
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I am here: http://maps.google.com/maps?ll=30.078685,-95.460026
Axial Wraith and Losi SCTE
They work fine from what I've seen. I prefer the VP knuckles because they are a high steer knuckle and don't have the unused arms on the rear.
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