throttle return spring

[Nick B]

Ok, let's assume the battery is bolted in with a couple of M10 nuts! What if the regulator dies, or a lead comes unplugged, or a soldered joint inside the pack splits or anything else that results in a total loss of power?

what about a spring on the throttle servo to return to the closed position??

[Steve]

what about a spring on the throttle servo to return to the closed position??

Don't be silly, that would put undue distress on your throttle servo leading to a likely premature failure and increasing the chances of the spring being required - would make a job for itself.

[squeaky pete]

or just get that csm thingy lol

[squeaky pete]

this thing

http://www.fast-lad.co.uk/store/thro...0-p-10080.html

[Nick B]

how about this to stop it?



hobo-with-a-shotgun-pics-1-650x277.jpg

[Rctintin]

50 quid plus postage

Think a spring is a better option, and less weight!

[ShinySideUp]

I don't do nitro but perhaps one option would be a spring-loaded relay that would control the fuel flow. When you power up the receiver you also power up a fuel cut-off (such that fuel flow is allowed of course). Loss of power means loss of receiver and therefore loss of fuel supply with the inevitable return to earth. Just a thought.

Martin

[Steve]

I don't do nitro but perhaps one option would be a spring-loaded relay that would control the fuel flow. When you power up the receiver you also power up a fuel cut-off (such that fuel flow is allowed of course). Loss of power means loss of receiver and therefore loss of fuel supply with the inevitable return to earth. Just a thought.

Martin

Sounds like a product idea for xygax?

[Rctintin]

I'm not trying to hijack the thread, but when you say glue the servo plugs, where do you apply the glue, and what do you glue it too?
After reading the other threads, I want to make my heli as safe as possible.

Run a bead of hot glue along the top of your servo plugs that touches both the plugs and the Rx case. It will stop vibration working the plugs loose, and can be easily peeled off when you need to unplug any of the servos. On my 550 for example, I have a bead running along my Rx, and a bead running along the connectors to and from the BeastX.

[pgkevet]

I don't do nitro but perhaps one option would be a spring-loaded relay that would control the fuel flow. When you power up the receiver you also power up a fuel cut-off (such that fuel flow is allowed of course). Loss of power means loss of receiver and therefore loss of fuel supply with the inevitable return to earth. Just a thought.

Martin

Isn't that the same as a spring on the throttle arm???

[easypickingsere]

If there was enough interest I'd draw his up and get 50-100 made at a local spring manufacturer in macclesfield. Not sure if it would fit the 55 as well as the 50 hyper.[/QUOTE]


I'd definately be interested Moyesboy, running a 620 on throttle so hopefully this spring should be able to return the servo to an idle position?

Cheers

Mark

[Eckchaz]

Search RunRyder.

My throttle return spring. - Page 1 - RunRyder RC Helicopter

That Jphilli is a NOB!

Great idea though.. I was thinking about it previously when I saw moyesboys thread first time round.. but my OCD didnt like the wire round the carb arm but now seeing the tidy spring version on RR.. I think i'll make a trip down maplins to get me some now. Like plenty have mentioned.. I dont think it will be a problem as the tail servo is constanly working.. the cyclics take a proper battering compared to the throttle servo.. and even with the spring tension positioned badly I think its not going to be much work at all..

[trillian]

I don't do nitro but perhaps one option would be a spring-loaded relay that would control the fuel flow. When you power up the receiver you also power up a fuel cut-off (such that fuel flow is allowed of course). Loss of power means loss of receiver and therefore loss of fuel supply with the inevitable return to earth. Just a thought.

Martin

I really like that idea! It has several advantages,
1. Allows use of any throttle servo, not just ones with real low drag when powered off.
2. It can probably be more robust in a crash situation when it's still possible for throttle servo links to come off etc.
3. Has the added convenience of automatically shutting off the fuel line as soon as you power off, so at the
end of a flight or when fuelling you don't have to clamp the fuel line.

If it could be made very simple and reliable and not draw much power this would be the best option IMHO.

[moyesboy]

I just read that RR link, got those guys talk a lot of bull and argue about nothing!
They use throttle return springs on cars - the servos don't fail regularly, they get a load of vibration on a car.
Like throwing a blanket over your heli is going to work as well as a throttle return spring - wirr bang vban bang, wheres my blanket, bang bang wirr..ho hum now need a bin bag not a blanket.

In an Rx failure everything should stop on an electric heli.
In a failure on a nitro evething will stop except the motor might stay going if its a complete power failue - like your reg failed or your battery lost connection. Those things definitely do happen from time to time.

Just start up your heli with the rx switched off if you want to see - mine wont start cos the throttle is closed by the spring.

A "power on to open" fuel valve is a similar idea, but more complex than a return spring I think.

The CSM device relies on the servo still working and the throttle linkage still working and seems a bit expensive. My spring is local to the carb so there as few elements between the spring and the carb as possible.

[Janek]

I just read that RR link, got those guys talk a lot of bull and argue about nothing!

If you look back at some of the posts here, this one almost went the same way !