b4 front end grip on carpet

[IceMike]

im struggling for front end grip on carpet on my b4, when i turn in it jsut doesnt seem to wanna go. currently 30wt and silvers all round. runnin green shu all round

[Southwell]

runnin green shu all round

Theres your problem.

[IceMike]

no i was havin the problem wit yellows aswell. actually found it got better with the greens

[c0sie]

Im with Southwell on this...yellow Schumachers are the only choice IMO.

How long since you last rebuilt your diff? And is your diff smooth as a smooth thing or as sandy as a sandy thing?

Post your setup here...we should be able to get you turning soon enough.

[Southwell]

Yellow what? Minipins? Are you cutting off rows? I don't see how you can understeer on carpet with minipins, mine always steers like a mofo. Chuck up your full setup.

[IceMike]

this is from memory cos im at work an dont have the car.

front

30wt silvers, standard piston
inside hole on the bottom, middle on the top. camber 1deg
1 washer under the front ballstud


rear

30wt silvers, standard pistons
outside bottom, middle top. camber 1deg
shaved flat on the rear ballstud
wheelbase short, 1deg anti squat.

10.5, standard spur, 23pinion
greens with inside and outside cut off front and rear.

and i always get confused over the whole pins and spikes thing, so ill just say there the nationals and regionals nominated tires

[c0sie]

Try outside on F arm, outside on F hubs too and 30' castor blocks.

Inside on R arm, 2' rear camber

[IceMike]

i think ill rebuild the shocks whilst im at it. i know the diff was done not taht long ago so i know thats still smooth.

[millzy]

On power or off power steering?

[Belsten]

Shumey yellow minipins are the only tyre to run on carpet

I would suggest also checking all the suspension components to make sure it is all free. Could be a bent hinge pin or something in there

Im with Cosie, run outside hole on the front wishbones

Also check to make sure the wishbones are laying level when the car is stationary with the cells in

[Medders]

My B4 used to drift like that for no obvious reason and with what most people would consider a standard set up. Very annoying.

I glued the servo saver up which solved the problem in an instant.

[c0sie]

Dave,

Help me figure out my lack of on-power exit steering/grip issue on Friday please?

[Belsten]

Dave,

Help me figure out my lack of on-power exit steering/grip issue on Friday please?

Your thumbs Chris :woot:

[IceMike]

its more on power steering that i notice it. cos i can always slide it in abit through the corners. anyone ever tried the skandinavian flick into corners wit a buggy??

[passy]

I'm with Medders, check your servo saver. Better still, glue it together and forget about it.

[c0sie]

Mike,

I suffer lack of exit steering/grip which does annoy me...but initial and entry steering/grip are all fine.

I can only put it down to not enough weight over the front.

Dave, I use a pistol ;)

[dan_kitty]

this has happened to me before, it was the servo saver being too loose.

I ended up buying a metal assembly as the threads in the saver kept striping

or just glue it up as sugested

[IceMike]

Ive tried putting some weight over the front end. but it doesnt help much. ive tried putting around 40g in there as far forward as i couldnt. and its not the servo saver guys thats already done.

[dan_kitty]

ah ok then, dont know then:confused:

[_sleigh_]

Are you running LiPo???

[c0sie]

Do you guys not find that glueing your servo saver fecks your servo??

And what do you glue it with?? Surely CA ould just crack??

[dan_kitty]

nice picture chris, my mrs went around saying "nobjokey" for ages, not realising it was an offensive gay saying.. she thought it was a type of pants. she must have said it numerous times infront of her gay friends.

[Southwell]

I used CA glue, i have managed to snap the actually link off that so make sure you have a spare. Decent servos shouldn't break without a saver. I even ran a cheapish one in the xx4 last year with no breakages.

[dan_kitty]

sorry that was a bit off topic lol

[c0sie]

Might have to remove that AV then, it isnt intended offensivly, maybe I just have a different meaning for the phrase!

Cant be doing with making more enemies lol

[dan_kitty]

lol, didnt mean you were being offensive:) its funny, however now my post makes no sense cos u changed your picture

anyway back on topic:thumbsup:

[IceMike]

Nope not using lipo. good old fashioned cells for me!!

[c0sie]

Mike,

Im presuming that your an experienced driver and therefore not going into corners WAAAAY to fast?

I used to run the following in my B4:

Front
Middle on tower
Outer on arm
Outer on tower ballstud with 1mm spacer
Outer on hub
Steering knuckle in middle
Yellow minipins (outer and inner cut to suit)
Lead in nose
30' caster
0 toe
1' camber

Rear
Outer on tower
Inner on arm
Outer on hub
No ballstud washers
Std antisquat
Std rear toe
2' camber
28g lead where gearbox is

[IceMike]

im experienced in someways :P

but nah i dont go in to fast, its just on some sections of our track im strugglin to keep it turnin in the corner. pushin it to hard to keep up with bish i think :P

[IceMike]

wot about the shocks mate?? and how much lead in the nose an where u put it??

[c0sie]

35wt front, 30wt rear
Blue front, silver rear
Standard pistons (2 front, 1 rear?? Cant remember)
No rebound

What about a front wing? Pro-Line of JConcepts??

[IceMike]

i have a jconcepts on but not on the car atm. i forgot about taht. should dig that out

[_sleigh_]

How much rear wing gurney are you running?

[IceMike]

off the top my head. i think its only about 5mm i leave on there. only a little bit to hold the whole fing together

[_sleigh_]

If it's high speed sweepers you're struggling on, it might be an idea to try a coulple of different rear wings. Depending on the current size of the one you're running then go a little smaller and remove the gurney.

As also mentioned above, try a front wing in combination with these rear wing changes.

[ashleyb4]

im experienced in someways :P

but nah i dont go in to fast, its just on some sections of our track im strugglin to keep it turnin in the corner. pushin it to hard to keep up with bish i think :P

At crashing and yes going into corners far to fast.

Cris I used to suffer from this with my b4 before i saw the light to deal with it persoanlly i just changed my driving a little didnt gun it out of corners as quick took a bit of a wider line into the corner. Generally just went slower though out the corner.

A

[Kopite]

Mike, what servo are you using? have you tried a different one?

If you do glue the servo saver up, it might well be that the servo has been strained so much over a long period of time, it's lost it's torque.

Worth a try pal

[IceMike]

usin a trusty blue bird :P yer i might invest in a new servo soon. ill try everything else first cos i do just think its the setup of the car

[super__dan]

usin a trusty blue bird
Cough cough

[Kopite]

lol!

issue resolved :thumbsup:

[IceMike]

it ant the servo!!! dont knockl my blue bird

[Medders]

having had the same problem myself its either the servo saver, the servo itself, or the steering links screwed too tight restricting movement under force. I do run a little weight on the front (as well as the back).

[IceMike]

no it ant the linkage, an it ant the servo. its the setup

[ashleyb4]

Its the servo.

A

[Spencer Mulcahy]

I had two blue bird servos that would not centre properly so it could be.

[c0sie]

So all I need do is CA the servo saver assembly??? And it wont crack/come undone??

Might try that then..

[IceMike]

it wasnt my servo!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ROCK ON BLUE BIRD!!!!!!!!!!!!!!

[Mike Hudson]

So all I need do is CA the servo saver assembly??? And it wont crack/come undone??

Might try that then..

just glue the two halves of the assembly (not much glue needed only a drop or two) and it bonds very well, it shoudn't crack or come undone if its quality thin ca :thumbsup: I don't know anyone who has had problems with doing this small mod

[tommychev]

Every time i glue the servo saver, the servo horn breaks not long after. In an accident, the turnbuckle breaks out of the thread on the servo horn. Its impossible to have an accident free run every time.

But by geez, it adds heaps of steering.....

[markwilliamson2001]

Well lets get things sorted out....



You should not need to run any lead in the front of the car with NiMH's.
You are running the wrong tyres (Green Minispikes instead of Yellow Minipins!)
You are using a Bluebird servo, that is known to be "not brilliant" should we say. Try another one?/better make?
Have you checked your steering lock? Is it turning fully on both sides?
Have you fitted the stronger servo saver spring/replaced the servo saver parts?
Is the steering binding in any way?


Make sure the fit and finish of the car is done correctly, before looking at setup.

c0sie's setup is not miles away from what I would run.

HTH
Mark

[millzy]

Every time i glue the servo saver, the servo horn breaks not long after. In an accident, the turnbuckle breaks out of the thread on the servo horn. Its impossible to have an accident free run every time.

But by geez, it adds heaps of steering.....

super glue the small turnbuckle link bar and then heat shrink it

job done

[Fabs]

and i always get confused over the whole pins and spikes thing, so ill just say there the nationals and regionals nominated tires

Has everyone missed that ?

You're running mini spikes mate, wrong tyre.

Difference between pins and spikes, spikes are cone shaped, pins aren't.

Not to mention mini pins have much smaller pins than the spikes on the mini spikes, and a lot more of them.

[c0sie]

Mini spikes on carpet are the shizzle, I wouldnt use anything else for club racing :)

[Fabs]

Yeah and that's why at the Petit RC EVERYONE was on mini pins :p

[IceMike]

has anyone looked at the dates on this thread, it was put to bed months and months ago, and it wasnt the servo saver, or servo. it was the weight distrobution of the car, not enough weight over the front end meaning there wasnt enought weight pushing down on the front tires to help then stick to the ground, ive since added alot more weight under the serve at the front end and the car is much more stable and more direct when i want it

now for me, this tread is closed so no need to comment on my issues with the car anymore

[c0sie]

Fabs,

PetitRC race isnt a club race is it...
And I doubt that people at PetitRC race cared about getting a couple of months wear rate out of their tyres either..

Where as I was refering to club meets, and I cant afford £30 every week :)

[IceMike]

nah didnt fink the petit was a club race, precially as ppl go over from here every year