Decoupler Help

[ZoroastroBR]

Hello, not sure if there is a post or a tutorial about this (if so point me to it please).

I have been using radial decouplers and almost every time when i use it the parts collide after. For example, with the Rockomax BACC Solid Fuel Booster. I have tried to use the Hydraulic Detachment Manifold (450 ejection force) and the TT-70 Radial Decoupler (one that creates a space between the parts) and it just doesn't work, flying strait up and after separation the rocket starts to turn and slams itself against the ship (also tried to add a bunch of Sepratron I and it didn't really work). Also, when I use it to decouple Rockomax Jumbo-64 Fuel Tank, same thing happens.

I would really like some help on how to use those things properly.

PS: A while back, before the game had science and missions, decouplers seemed to work fine, the parts would just fall strait down, that doesn't happen anymore!

PSS: Thx for all the help!

Edited August 10, 2014 by ZoroastroBR

[Master Tao]

You're right. It appears to be a bug that was introduced during the hotfixes for KSP 0.24. Claw's post here in the Support Forum link's to Targa's workaround. It's listed under this heading:

[0.24.2] Radial Decouplers Not Decoupling Correctly (parts collide) – [PARTIAL FIX]

[SRV Ron]

Try making sure that the SRBs are centered on those decouplers and if you use braces they they are also evenly balance. Finally, be sure you are going straight when staging so that those boosters slide off straight. Otherwise, you will get the rotation that can causes collisions and damage.

[ZoroastroBR]

You're right. It appears to be a bug that was introduced during the hotfixes for KSP 0.24. Claw's post here in the Support Forum link's to Targa's workaround. It's listed under this heading:

[0.24.2] Radial Decouplers Not Decoupling Correctly (parts collide) – [PARTIAL FIX]

Thankyou. I used the suggested fix and it works now. Still a bit bugged, but I don't have to spend 3 hours just to launch a rocket.

[ZoroastroBR]

Try making sure that the SRBs are centered on those decouplers and if you use braces they they are also evenly balance. Finally, be sure you are going straight when staging so that those boosters slide off straight. Otherwise, you will get the rotation that can causes collisions and damage.

Will do, just one question, what are braces?

[LaytheAerospace]

Probably means to brace it with struts. So the top doesn't bend toward the core while thrusting, which complicates staging.

[ZoroastroBR]

Probably means to brace it with struts. So the top doesn't bend toward the core while thrusting, which complicates staging.

Got it, one last question. I read somewhere that the struts were blocking the force of decouplers, is that true?

[Kryxal]

I'd believe that, I had a set of four satellites that I sent up, they were made to piggyback on something heading to Eve then detach and use a gravity assist ... they ended up blowing themselves to bits when the stack separators fired off (they were strutted to a fare-thee-well, but they needed it, and this was in 0.23)

[Sirrobert]

Got it, one last question. I read somewhere that the struts were blocking the force of decouplers, is that true?

It is sometimes possible, though not a very common thing.

You can fix this almost always with sepratrons

[ZoroastroBR]

Thank you for all the answers, you guys are awesome!

[Jett_Quasar]

The decouplers haven't changed, KSP just introduced bigger rocket parts in the the ARM release. Bigger rockets means heaver tanks to jettison. The force produced by the decouplers can't push the spent rocket far enough away - Sirrobert hit on the solution, sepratrons.

JR

BTW, if you go to your original post and hit "edit", then go to "go advanced", you can change the prefix from Unanswered to Answered.

http://forum.kerbalspaceprogram.com/threads/85063-How-to-change-Unanswered-to-Answered

Edited August 10, 2014 by Jolly_Roger