TheSamba.com :: View topic

Fri Oct 29, 2004 4:50 pm

ft_irwin_73baja wrote: for you guys with the BCR arms, do you remember when they took down the plans for their arms from their site becouse they "had some problems" with the design? i wonder just what problems they were refering to, hopefully you guys got your arms after they fixed the design.
that was for their 2x3 boxed arms. i think the few people here that are using their products have the tubular arms

Fri Oct 29, 2004 11:00 pm

dont get me wrong, that wasnt a bash on them.......and since it was 2x3 it dosent apply to this conversation, thanks Brad.......this is my first rodeo so dont take my words as gospel by any means.....but still I will let you know how you know arms work on my baja.

Fri Oct 29, 2004 11:07 pm

i mean how MY arms work.

Sat Oct 30, 2004 8:55 pm

I think the original bcr plans were deep sixed because of people copying it.

I have a pair of tubular arms from them. well actually it is my second set. I broke the first set of his 4 x 5 arms I had. snapped a some chromoloy tubing. this second set is made from DOM tubing. it is only about 2 pounds heavier than the others.

I have been unhappy with both sets. this set seems to have about 3 more degrees camber to the passenger side than the other. the first set and the 2 x 3 arms I had to start were both pretty good so I suppose it is in the arms this time. several other probs too, but I won't go there......

Aaron

Tue Nov 02, 2004 3:38 am

I have check my arms :evil:

The two arms are not symetrical!!!!!
The pivot angle is WRONG on both arms.
One as 3° and the other 1.5°
And the angle is in the wrong way, I have to swap the arms to minimize positive camber (shock bosses down side!!!!).

One solution is to cut the pivot tube and replace but I think its not good welding twice one the same place.

The other solution is to keep these as spare parts and build my own arms with the angle I choose.

I heard some one who broke their arms! Where is the weakness point?

SHMO,
the camber should be 0° at ride hight. Having positive camber will decrease CV angle only on weel side. On gearbox side the CV angle is more important because the gearbox output is vertical.

Tue Nov 02, 2004 10:45 pm

My BCR arms were also built wrong. One arm I had replaced because it was so far off it wasn't even useable. The replacement arm was built wrong too! I am not impressed with BCR arms what so ever.

macfly,
you are partially correct with your statement, in a perfect world, but most cars DO NOT have the ideal 0 degree camber at ride height that you mentioned. I think you would be surprised at the ride height your car would have with the camber at 0 degrees, even with 3x3 trailing arms. Generally speaking, suspensions are setup to work as best as possible, and rear wheel camber is something you limit or learn to live with.

Also, CV's break on both ends of an axle so I don't agree with the drive flange CV's being the only concern, even if they do run at 0 degrees. I have personally seen CV's break on the stub axles too, and those CV's do cycle with less articulation which means they should last longer....go figure!

SHMO