R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric Off-Road

Thread Tools Search this Thread
Old 06-08-2007, 02:36 PM   #1
Tech Master
Shark413's Avatar
Join Date: Apr 2007
Location: SoCal
Posts: 1,554
Trader Rating: 24 (100%+)
Default Mamba Max - Radio Question

I just got a Mamba Max and installed it in my Kyosho Lazer. I was testing it out in the backyard, stop/go, turning, basically just driving around slowly when i decide to test the acceleration. I have a 60 foot driveway and I accellerated down the driveway, when I got to the end of the driveway I let off the throttle and to my horror the car just kept going. It flew over the sidewalk and hit the middle of the street heading right for the curb on the other side of the street. Luckily it hit a small pothole and flipped over and the battery flew out and killed it. I did not have my transmitter antenna extended (since it was only 75 feet), but it seems like the radio lost it's signal and the car went off by itself. What I am confused about is on electric cars, if the signal is lost won't the car stop (no power to the motor) by itself? I did some testing (which I should have done before hand), by placing the car on a block and walking away while giving it throttle, at about the 60 foot mark the car all of a sudden started to glitch/accelerate by itself. I had the antenna down for this test. I then extended the antenna and I regained control over the car and it seem to work normally at extended ranges (100+ feet). My question is why did the car take off by itself? Is the Mamba Max sensitive to rx signal strength? I calibrated the Mamba per instructions and it ran fine when I was setting it up, I am using a JR XS3 Pro radio and JR rx, using fresh batteries all around. Any ideas?
Shark413 is offline   Reply With Quote
Old 06-08-2007, 02:46 PM   #2
Tech Elite
badassrevo's Avatar
Join Date: May 2007
Location: Roaming Shores, Ohio
Posts: 3,322
Trader Rating: 12 (100%+)

it makes perfect sense. the antenna must be extended all the time.
badassrevo is offline   Reply With Quote
Old 06-08-2007, 02:51 PM   #3
Tech Regular
cfwdude's Avatar
Join Date: Feb 2006
Location: Spokane, WA
Posts: 288
Trader Rating: 7 (100%+)

yup. makes sense.
some of the recievers for electric planes are putting 'fail safe' settings into thier receivers that are programmable, so you can program no throttle, and a little bit of rudder (to keep it turning) if the signal is lost.

out of range, with no failsafe, yer screwed.
cfwdude is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
question on mamba esc... sixsix1 Micro and Mini Scales 4 06-16-2008 07:49 AM
Mamba 25 question. mashaun Micro and Mini Scales 5 02-22-2008 01:53 AM
Mamba 25 question. mashaun Radio and Electronics 0 02-16-2008 09:06 AM
Mamba Max Question !!! blackdog Electric Off-Road 47 07-06-2007 06:42 AM
XXX-S and Mamba brushless question Phroz Electric On-Road 9 04-23-2007 09:59 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

All times are GMT -7. It is currently 04:16 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net