Steering Angle Question(s)

[Talan]

This is a two part question.

1) What is the stock steering angle and do I need to improve upon it to be competitive? And if so, what is the recommended way to do that, keeping cost in mind as a limiting factor?

2) Also, I want to run the HB Rover Crawler tire which is claimed to be 5.5" tall. Has anyone run this tire on a Berg? Are there any interference issues or anything else that I should expect?

I am trying to go cheap initially so I am thinking about running the below and everything else will be stock.
TCS Berg Chassis Kit ($14.99)
TCS High clearance links ($10.99)

[Hildy]

The turning is great in stock form.

Mine turns to the point where the tires rub the shocks/links. It is nothing to worry about...obviously the extra turning is well worth a little rubbing.

[Calderwood]

In stock form they turn to the point were one side of the dogbone pin comes out of the cup on the stub shaft...

Be easy on the throttle when your bound up and at full steering lock.

[binaryterror]

Originally Posted by nigels_world

In stock form they turn to the point were one side of the dogbone pin comes out of the cup on the stub shaft...

Be easy on the throttle when your bound up and at full steering lock.

If you put in Fuel tube in the output shafts, this prevents them from coming out. The amount you need does make it harder to steer easy, but thats what the 8711 is for. Good steering and no wear/failure doing this so far on mine.

[mchester]

Originally Posted by binaryterror

If you put in Fuel tube in the output shafts, this prevents them from coming out. The amount you need does make it harder to steer easy, but thats what the 8711 is for. Good steering and no wear/failure doing this so far on mine.

How many mm thick is the spacer you cut from the tubing? I am using about 4mm now.

[tedmales]

The tires on 1" Eritex Berg offset wheels (great wheels by the way) No problems so far

[Talan]

Thanks everyone!

[binaryterror]

Originally Posted by mchester

How many mm thick is the spacer you cut from the tubing? I am using about 4mm now.

I'm guessing originally at 6mm, but if you look now it's worn down to fit perfect. Like I said its tight in the beginning, real tight, but it's worn in quickly with the servo I use.

[Calderwood]

Originally Posted by binaryterror

If you put in Fuel tube in the output shafts, this prevents them from coming out. The amount you need does make it harder to steer easy, but thats what the 8711 is for. Good steering and no wear/failure doing this so far on mine.

I use 2 o-rings in each stub shaft. My inner axles have no play. I does have some drag from them as you stated. I use an Airtronics 94780 on 7 volts so drag is of no concern. One thing to make clear... The failure depicted above is from the stub shaft cup turning off of one side of the dog bone at full lock(shown below). Retaining the inners will in no way prevent this.

[binaryterror]

With only 2 O-rings the inner axle on mine still moved when the axle would rotate and steered. That's why I went with the fuel tube.

[vonclod]

wonder when someones gonna make a cv for the berg, thats the ticket

[Trugg]

Where exactly are you putting the o-rings/fuel tube?? Im in the process of build a Berg based rig and want to make sure i do this right...

[Calderwood]

Originally Posted by Trugg

Where exactly are you putting the o-rings/fuel tube?? Im in the process of build a Berg based rig and want to make sure i do this right...

In the stub shaft where the dog bone goes.

[Trugg]

Thats what i thought...but what keeps the o-rings from comming out through the slots in the drive cup??

[HauntFreaks.com]

hope this helps...

[binaryterror]

Originally Posted by HauntFreaks.com

hope this helps...

Good sketch, or put the o-rings as shown in place of the Tube, same idea.

Originally Posted by Trugg

Thats what i thought...but what keeps the o-rings from comming out through the slots in the drive cup??

One local uses 3 o-rings to do the same. Insert one in down like it might slide out, but then 2 over it into the cup and seems to hold in well and hold the 2 o-rings in a more original shape. Then just install the knuckle again.

Nothing is written as right or wrong here, something needs to be in there to help, be it 2 o-rings, 3 o-rings, fuel tube...your choice on the item, just needs to be a rubbery type material.

[tedmales]

Mine came with o rings in them and I took them out. I do not understand what they do. They physicaly keep the wheels from turning to far by putting everything in a bind? I just used my servo and set the endpoints to keep it from over extending the dogbone.

[binaryterror]

The o-rings stop the inner axle from being able to float out of the inner slot in the center gear. This causes broken or worn axle shafts.

Put them back in they are to make the axle shafts last.