Neo scorcher front uprights hitting

[Reliver]

Hi guys.  Wonder if anyone can tell me what I'm doing wrong...just reference the car please 😉

I have almost finished the build although when I steer maximum lock,the front uprights are hitting.  I gave attached a video. Can anyone offer advice?

[Problemchild]

What do you mean the front uprights are hitting?

something sounds V rough anyway

got the correct driveshafts in?

seems like maybe something isn’t seated correctly and the driveshafts are too tight 

JJ

[Problemchild]

 

 

which bit is hitting which bit 

on full turn nothing should hit 

 

JJ

[Reliver]

Not sure if you could see my video.  I think it is just I need to alter the steering dual rate adjustment which I believe changes the maximum end point.  It means I have less maximum steering.  

[Problemchild]

Nah the steering locks out on the hub so it shouldn’t be that

how close is the cup to the diff casing ?

JJ

[Reliver]

I will try to show where it is hitting.  It is the arm of the upright.

[Problemchild]

What bit is the upright?

JJ

[Problemchild]

I can push the steering right over and nothing hits 

is the drive shaft spinning and hitting something or is it the drive shaft cup?

JJ

[TurnipJF]

Is this the point of contact you are worried about?

If so, then this is perfectly normal when your steering reaches its maximum throw. If the servo is trying to drive it beyond this point, then you are correct in that you need to turn down your EPAs.

[isomer1]

It looks like the dogbone is getting hung up on the cup. As Problem & Turnip mentioned the uprights normally limit movement to prevent that. Can you try turning down the throttle so it just rotates very slowly and repeat the experiment? It'd probably be easier to spot the problem it as it sticks then pops free. (I can't figure out how to slow the video speed)

[Reliver]

Hi guys.  I really appreciate all this help. Turnip is right.  That's where its hitting. I guess I need to adjust the controller. I will do another video to check...when I manage to get the kids under control! 

[Reliver]

Ok.  After work with kids..managed to get a video done.

 

[Biz73]

Is it only on the 1 side? It's possible that your servo saver/horn is not centered.

[isomer1]

The others above will have more experience, until they weigh in it'd be worth double-checking:

1. step 15, is the bearing (BB2) well seated in the upright (B2)?
2. step 15, is there anything (extra washer etc) between N1 and BB2?
3. step 16, is the rubber grommet (MB16) present in the in N2?
4. if you install the bearing on the outside of B2, does it help or get worse?

You might try putting the grommet (MB16) on the other side of the dogbone, that is put it inside N1 instead of N2. Both sides can bind, but the N1 side is more sensitive as it moves in up-down and left-right directions (N2 just moves up-down) 

[Reliver]

Thanks guys.  Limiting the servo travel fixes it.  It happens both sides.  Although problemchild says his doesnt hit at all so will look at the other things mentioned.

[Problemchild]

Yeah remember just 1 grommet per side NOT both ends of the shaft 

my steering locks out on part B1 (those little tabs are for that) and within the chassis on the screw mounts 
 

JJ

[Problemchild]

Is the grommet seated properly too? 
 

they are a real ball ache 

i use the Allen key that comes with the kits to get it seated right down the bottom 

JJ

[Problemchild]

You also don’t have your outer bearing in part B2 which will allow the cup to move more that it should side to side 

do you have the inner one in?

JJ

[Reliver]

Thanks ever so much all.  I have limited the travel and also checked ref advice above.  With the wheel on,  if it does travel too far it is not an issue.  I have reseated the grommet too.

[Problemchild]

good stuff

enjoy driving 

JJ

[Reliver]

I just want to say thanks to all. Legends.

[Problemchild]

why are all your vids just 1 second hah

JJ

[Reliver]

Lol.  There is a maximum upload size.  Need to take lower resolution. He loves it.