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electrical issue

sunoco

Well-Known Member
Messages
169
had the car on the stand running this evening. was slowly leaning out the high speed fuel screw. held the throttle wide open- pushed the 3rd channel- no ignition shut down. always worked at idle- mid throttle- no issues @all. - first thing that came to mind- bad kill switch- or wiring.- switch is a killer bee.- so back to the bench the car went. turns out to not be the kill switch at all.-- some time ago, i installed a direct servo harness.-- what this does - it bypasses the hot- positive wires on the servos from going tru the reciever.- good idea really- seemed to feed slighty more juce to the servos- but-- it caused the kill switch to not operate when the throttle waswide open- work correctly at idle- mid rpm. The offending direct servo harness is setting in a box with all the other electrical stuff. It could be a good idea to test your kill switches, no matter what brand they are when the cars are running wide open- on a stand worked for me-- anything that can go wrong with rc- will eventually- just saying-----
 

G-Man

Junior Member
Messages
958
Location
Pittsburgh,PA
I had a similar issue. On the stand the engine shut off with 3rd channel and red push button. Drove around the yard a bit went and hit the 3rd channel button to kill the engine, nope. Hit the red button, nope still running. I then was like how am I gonna shut this off. Pinch the feed fuel hose, no it will lean out no good for the engine. So i held my hand over the exhaust pipe outlet, boom it stalled within a mili-second. So Ya never know what may happen, you are 100% correct!
 

sunoco

Well-Known Member
Messages
169
no doubt-- thing is- 3rd channel always worked correctly at idle- 1/2 throttle- on off button on engine case is fine-- the 3rd channel switch on the transmitter handle--- ok- Get this one-- i had both of the solder antenna connections break off the printed circut board in a reciever-- the antenna vibrated down the antenna tube- shoving the 2 broken solder joints at the antenna-pc board joints- shorted out the reciever- the transmitter became useless -- no steering- throttle- it was going wfo- no fail safe- no killswitch-- i was running the car on a empty foot ball field- freshly short cut grass so the xb was really hauling ass-- went the lengith of the field- clipped lucky- a concrete barrior- became air borne- flew about 8 feet high- about 30-40 foot later hung up about 4 feet high in sticker bushes--- no b.s. it wad a pumped up piped engine- high compression 30.5--- far faster than a stocker-- honk as parts fly off !!! lol !! good thing the bushes were thick-- the creek was about 5 feet further-- it was running high from sudden heat wave-- spring snow melt--

the guilty fly-sky reciever-- the antenna is between the reciever cases-- where the antenna goes tru the antenna cases- its a loose fitment-- now- i always smear a dab of silicone- work it into the case wire area- when the reciever case is closed- screwed together-- yup- been there crashed that--- lol.
 

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