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Author Topic:   Indexing bird cages?
Dirt Full Roller

Total posts: 57
posted August 09, 2005 10:25 PM  
How many people index their bircages away from 0 degrees static and what are the effects of doing this. I have always had mine set at zero. I can not see the benifits on indexing them either side. is this a tuning adjustment that can be made? I am curious as to what effects it has,to say the least. Any info would be great. thanks.

Dirt Freak

Total posts: 209
posted August 10, 2005 08:10 AM  
we have tried this on our late model, though our b/cages only had provision to move the top link directly down closer to the axle centre 1 1/2" (i think most newer cages have slots or multiple holes).
when we did this on the left rear, i found the car to loosen up initially when you first get off the throttle, i believe this to be due to the b/cage "unwinding" away from the spring, this feeling didn't last long (a split second at most) but it did surprise me the first couple of times. it does however give alot of added left rear traction exiting the corner because of both increased bar angles and more "wrap" against the spring. i would say that you need to be very smooth with your driving and on the throttle for this to work really well. i haven't indexed much since as i found the car a little too hard to drive at times and we have few slick tracks here to really warrant using it.
according to our rocket chassis manual, it says for maximum forward bite, to index left rear birdcage.

Dirt Maniac

Total posts: 196
posted August 10, 2005 01:51 PM  
There is 2 ways to index the bird-cage.The first is if you half different holes in your birdcage so you can lower it on the cage.The other way is to adjust your trailing arm lenghts.Making the upper shorter than the lower, this basically helps get the car on the bars quicker cause it kinda has a head start.I like adjusting the arms casue lowering the bar on the cage really makes the car erritic and gets on the bars to quick.

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