Welcome Guest Search | Active Topics | Log In | Register

Robi Keeps Falling Forward Options
Prexus
#1 Posted : 14 March 2017 13:56:38

Rank: Newbie

Groups: Registered

Joined: 14/03/2017
Posts: 2
Points: 6
I just finished building my Robi, but he keeps falling forward when he tries to get up or do the balance game. Strangely - when he walks forward - though kind of wobbly - he doesn't fall forward.

I already followed the instruction to add the servo paddings to his front-sole servo motor areas in both his left and right feet (2 pads each), but he still falls forward.

Any tips on how to remedy this?
Gandale
#2 Posted : 14 March 2017 23:26:38

Rank: Super-Elite

Publisher Medal: Featured Build of the MonthActive Service Medal: 500 post active service MedalPurple Medal: Super active service medal for 1000 postsRed Medal: Red MedalTurquoise Medal: Turquoise Medal for model making know-how contributionOutstanding Build: An award for an outstanding buildBuild-Diary Medal: Build-Diary Medal of Honour
Groups: Administrators, Registered, Global Forum Support, Moderator, Official Builds, Administrator

Joined: 08/09/2012
Posts: 14,652
Points: 44,783
Location: Aberdeen
Welcome to the forum, hope you enjoy your time with us....Cool Cool .. Will see if I can get someone to help with your problem.... Cool Cool

Regards

Alan
arpurchase
#3 Posted : 15 March 2017 04:02:40

Rank: Super-Elite

Publisher Medal: Featured Build of the MonthActive Service Medal: 500 post active service MedalPurple Medal: Super active service medal for 1000 postsRed Medal: Red MedalTurquoise Medal: Turquoise Medal for model making know-how contributionOutstanding Build: An award for an outstanding buildBuild-Diary Medal: Build-Diary Medal of Honour
Groups: Registered

Joined: 27/09/2011
Posts: 15,210
Points: 46,177
Location: Dudley
BigGrin Hi Prexus

Firstly a big welcome to the forum now onto your problem.

This will need some dissassembly.

Firstly check that all screws on Robi's legs are correctly tightened and that all cables are running freely from servo to servo. Lastly check that all servo to component joints are correctly lined up on the legs, just one notch out can cause problems.

Also check the arms are correctly assembled as with the legs to body servo joint.


Get back to me if your still having problems after doing all the above.

Andy
Current builds:-C57,Zero, Lamborghini Countach, Caldercraft HMS Agamemnon,Robi,R2-D2, MFH Cobra .

Prexus
#4 Posted : 16 March 2017 02:07:27

Rank: Newbie

Groups: Registered

Joined: 14/03/2017
Posts: 2
Points: 6
arpurchase wrote:
BigGrin Hi Prexus

Firstly a big welcome to the forum now onto your problem.

This will need some dissassembly.

Firstly check that all screws on Robi's legs are correctly tightened and that all cables are running freely from servo to servo. Lastly check that all servo to component joints are correctly lined up on the legs, just one notch out can cause problems.

Also check the arms are correctly assembled as with the legs to body servo joint.


Get back to me if your still having problems after doing all the above.

Andy


Well I did add the paddings to the front part of his feet servos. Isn't that suppose to elevate his center of gravity a bit to help with that?

Also speaking of servos, I do notice that when Robi is in the sitting position - his right foot taps a bit up-and-down (left feet is still). Also when he is in the standing-position - his feet are still, but both of his arms shake a little back-and-forth.. Is this normal?
arpurchase
#5 Posted : 16 March 2017 07:41:01

Rank: Super-Elite

Publisher Medal: Featured Build of the MonthActive Service Medal: 500 post active service MedalPurple Medal: Super active service medal for 1000 postsRed Medal: Red MedalTurquoise Medal: Turquoise Medal for model making know-how contributionOutstanding Build: An award for an outstanding buildBuild-Diary Medal: Build-Diary Medal of Honour
Groups: Registered

Joined: 27/09/2011
Posts: 15,210
Points: 46,177
Location: Dudley
BigGrin Hi Prexus

The movements are normal and are like breathing movements to indicate he is on and awaiting instructions.

As for your failing over problem If the checks I have asked for are not done how can we be sure the assembly has been done correctly [I am not saying it hasnt] so we can move forward to correct the problem.

AndyCool
Current builds:-C57,Zero, Lamborghini Countach, Caldercraft HMS Agamemnon,Robi,R2-D2, MFH Cobra .

Bluthson
#6 Posted : 14 March 2020 15:37:44

Rank: Newbie

Groups: New Members, Unapproved

Joined: 12/03/2020
Posts: 1
Points: 3
Location: Liverpool, UK
arpurchase wrote:
BigGrin Hi Prexus

The movements are normal and are like breathing movements to indicate he is on and awaiting instructions.

As for your failing over problem If the checks I have asked for are not done how can we be sure the assembly has been done correctly [I am not saying it hasnt] so we can move forward to correct the problem.

AndyCool


Hi Andy I know this is an old post but are you still able to advise on this problem? I have done all the checks you asked the other guy to do and I have even tried shifting the centre of gravity with pads in shoes! I’m losing my mind as I’ve had it apart so many times I feel like I’m chasing my tail!

I only recently got chance to make my robi after having it all stored away for a few years unopened :/

Any help welcomed

Paul
Users browsing this topic
Guest
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Powered by YAF | YAF © 2003-2009, Yet Another Forum.NET
This page was generated in 0.112 seconds.
DeAgostini