So you dont have a Failsafe uh...( read my story)

[Remy]

Speaking of hpi MT's:

I drove mine for the first time in 2yrs today. I have two other heavily modded r/c's so I decided to let my wife and 2yr old son get some seat time. Gotta get him learning at some point. Anyway he went wot almost head on into a tree. The Mt flipped over like 3 million times but some how managed to land on its wheels. But in the process of that impact , the reciever was destroyed. After the trucked landed on its wheels it headed right to the highway . It managed to cross the 4 to 6 lanes without getting hit by any cars but by the time it made it to the other side it had a huge concrete wall to deal with. Needless to say the MT lost that battle. It slammed into the wall head on at wot. I have been in R/c's for alot of years and I have never seen a truck blow up like that after a impact. That is where it finally died.

Damages:
Bent Chassis
Bent front drive shaft
Broken shock tower
Broken control arm
Broken driverside tierod
Broken reciever
cracked header
exhaust fell out ( silicone coupler vanished ?)
The throttle servo no longer works
broken front bulk head
misc plastics parts everywhere
Motor wont start but i think that has something to do with the gas tank sitting 2 feet from the car after the impact :shrug:

Threw all of this i am some how proud of my kid




edit: Please dont forget your failsafes people.

 

[cvec7]

lol, that's a great story. Odly enough, I've NEVER used a fail-safe...

 

[kwong2001]

You know, if the receiver was destroyed in the initial crash, it wouldn't have made a difference, the failsafe still would have had no way to actually activate. Only thing that would have saved the truck is possibly a throttle return spring depending on how everything happened.

 

[4u2nv]

All failsafes have ever done for me was make my Rc's Glitch. I thought it was the failsafe, so I got a different one and it did the same, so I said hell with it, and havnt had any problems.

And like Kwong said, it wouldnt have made a difference witht he reciever trashed. Your problem wasn't not having a failsafe, it was have a 2 year old behind the wheel, and behind the wheel with a highway around.. Aparently ya got alot more dough than I do..lol..

Did the people who stopped pull over and come and talk to ya? Was just curious, and what they said. Not to be a peepee, but if a Rc going fast went in front of me when I was driving and I had to run it over, Id be pissed as hell!! Basically because of my rims and tires (22's.. Rims and tires are CRAZY!), and anything else it could damage.

 

[rbmaxxbasher]

depends solely on the reciever and failsafe...

some failsafe units are different by design. some override the radio frequency with the ones you set. others directly interrupt the signal at the control wire.

I've never had a failsafe glitch on me. You may try mounting the failsafe farther away from the rx. I always put my failsafe at least a couple inches away from the radio.

FYI: I run the ofna and duratrax failsafes

 

[chewyboy]

i decided to get a failsafe after i was running my rc one day and it took off. was going towards a trail in a woods. it ran into a low (real low) branch and it went through the front and rear window, both open for ventelation/cooling. anyway since it was scooting it launched up the limb and ended up about 4 ft in the air running full throttle

 

[aj200415]

i decided to get a failsafe after my car took off in a camp ground one day. it hit a tree at WOT and then flipped and hit 3 campers before it flipped on its lid so i could grab it. The owners of the campers didnt mind my car hitting them at WOT! they were interested in my car. So my point is, failsafes are only good for certain applications. If the recever is smashed or anything, u better have a throttle return spring.

 

[Pinblaster]

I'm not sure what eveyone is using for throttle servo's, but has anyone actually tested your return springs by pulling full and part throttle (not running of course) and killing the RX power to see if your return spring actually closed the trottle. I'v done this with several servo's and found 1 servo to actually close all the way with 1 return spring. 1 hi torque servo I tested didn't even move after killing the power with 2 springs and another closed part way with 2 springs. I also noticed after installing dual springs, the throttle responce slowed down so much it defeated the purpose of having a hi speed servo. Even the hi torque servo's had a significant drop in speed with tight or dual springs.

This being said, the best anyone could expect from a fail safe would be in the event you ran out of radio range or your rx battery power drops to unsafe levels. If your servo strips or power to the RX is lost completely they wouldn't do much good. This weekend we had a guy with a MT whos servo stripped and went WOT across the track before anyone could get a hand on it and shut it down. his return spring wasn't strong enough and his fail safe was of no use. :shrug:

 

[Plaidfish]

I don't run one cause of the glitches I was getting.....now I only run on the track so it's a littel more contained......I spent 2 months having constant glitching issues...dumped th efailsafe and haven't had one since....

 

[cvec7]

I'm not sure what eveyone is using for throttle servo's, but has anyone actually tested your return springs by pulling full and part throttle (not running of course) and killing the RX power to see if your return spring actually closed the trottle. I'v done this with several servo's and found 1 servo to actually close all the way with 1 return spring. 1 hi torque servo I tested didn't even move after killing the power with 2 springs and another closed part way with 2 springs. I also noticed after installing dual springs, the throttle responce slowed down so much it defeated the purpose of having a hi speed servo. Even the hi torque servo's had a significant drop in speed with tight or dual springs.

This being said, the best anyone could expect from a fail safe would be in the event you ran out of radio range or your rx battery power drops to unsafe levels. If your servo strips or power to the RX is lost completely they wouldn't do much good. This weekend we had a guy with a MT whos servo stripped and went WOT across the track before anyone could get a hand on it and shut it down. his return spring wasn't strong enough and his fail safe was of no use. :shrug:

They will close w/ the car running, because there will be tension on the spring, then w/ all the bumps and vibrations, it'll knock it closed.......or mostly closed to where an impact wouldn't effect it much.

 

[redhatman]

U got pics remy?

 

[Pinblaster]

They will close w/ the car running, because there will be tension on the spring, then w/ all the bumps and vibrations, it'll knock it closed.......or mostly closed to where an impact wouldn't effect it much.

:spit: Try that with a HiTech HS-945MG, Dual springs and a finger will barely move that thing w/o power. :LoL:

 

[cvec7]

Well, w/ a servo that expensive, you're not supposed to crash or have radio problems. lol.

 

[Pinblaster]

True but I put it in my steering and swapped it with the HS-5925 MG hi speed I bought 2 weeks before and put that one for throttle. The HS 5925 doesn't have any tension when the power is cut and a single spring will snap the throttle close. I'm just not going to take any chances and trust my rig to, "vibration and heavy tension" to close the throttle if it won't close sitting on the bench to begin with.

 

[Remy]

U got pics remy?

LOL nah. I already pulled it apart to check the damages. Truck wasn't run for 2yrs so now I guess it will sit for another year until I decide to put it back together again. My addiction to my revo and r40 wont allow me to spend any more money on any other r/c's

Oh and this is the old 15 stock motor and carb. No return spring available. Once the reciever broke , it was just a matter of when the truck would hit something hard enuff to make it stop.

Also when the truck got on the highway NO CARS STOPPED ! I was just lucky it hit the concrete and not a 1:1 car.

regards

 

[redhatman]

what highway was this exactly?? I noticed your from NY lol, must have been pretty busy.

 

[JESSE G]

I don't run one cause of the glitches I was getting.....now I only run on the track so it's a littel more contained......I spent 2 months having constant glitching issues...dumped th efailsafe and haven't had one since....

Would that be the one I got from you Plaid lol. I'm glad I have it, After taking my T-Maxx out the second time ever and it takes off on me hitting a pole WoT and exploded all over the place its nice to know I have some protection lmao. Man i thought I was going to hurl uke: lol speaking of hurling anyone heard from Rolex he hasnt been around to give me a ribbing in a long time ? I like the ofna one I got from you Plaid that I bought one for my Rc10, unfortunatly I still havent gotten it to run right yet.

 

[rbmaxxbasher]

running without a working failsafe is like screwing a call-girl w/out a rubber..... its just not safe.

edit: I think new rtrs should come with a failsafe

 

[cbreaker]

I've had two HiTec servos die on me this summer, within three runs. Both were the digital HS-5925MG servos. It's a nice servo, it's like .09 and 160oz at 6V. Good throttle servo; very fast throttle response and strong brakes.

Anyways, the first servo worked for most of last season, and I was lucky enough to have it on a bench when it died. Smoke came out the bottom of the servo. It died, and the vibration pulled the throttle open. I got the engine shut off before anything bad happened.

Figured it was a fluke. Purchased another one. It worked for a day. Next day at the park, the servo decided to wig out and open throttle completely. It ran through two lanes of traffic, up the base of a tree, on it's back, rolled over, ran into a fence, flipped over twice, went down the road... I'm sure you can imagine the scene. It finally flipped on it's back and I shut it off (the burn on my finger is still there after a month and a half.)

Needless to say, I'm a little scared to run the buggy at all now. I'll never use another hitec servo - I've installed my old JR 650 in throttle. I installed my fail-safe, and I need to find a place to get throttle return springs. It sucks, because there's almost nothing you can do if the servo locks open except run after your $1200 toy barrel ass away from you to be potentially destroyed.

Oh well, it's an expensive hobby. But buying a few fail-safe units until you get one that won't glitch for you is definately worth the effort. Too bad it they won't help broken servos.