Burgard a arm question

[riotact]

I got some Burgard +2 +1 a arms and had a question on mounting them.Is the top arm supposed to stick out further then the bottom?I know I have them on there right they just dont look right to me and wanted another opinion.Thanks for any help you can give me!

[riotact]

#2

[riotact]

#3

[dustin_j]

Are you asking if the top a-arm is too far forward? Take a picture from above, looking down at the spindle. The upper ball joint should be slightly more towards the rear than the lower (positive caster). I'm guessing here, but maybe 1/8 - 1/4" difference?

EDIT: same picture as #2, just where we can see both ball joints (at least their centerline).

[sneaky11]

here's a little litterature for you my friend!! if you read it all, you'll be able to set you good!!



http://www.exriders.com/vbb/showthread.php?s=&threadid=300433

[Scro]

I'm pretty sure that upper arm is supposed to be on the other side. It looks like you have too much negative caster. Swapping it to the other side would fix this.

[riotact]

Originally posted by Scro
I'm pretty sure that upper arm is supposed to be on the other side. It looks like you have too much negative caster. Swapping it to the other side would fix this.


Maby I have both on the wrong side then.If I just switch the upper arms,the other one sits about 2" toward the rear of the bike.Ill have to try and swap them.Thanks

[riotact]

Here is a pick with the spindle removed so you can see the ball joints and the part circled in red is what I was mainly concerned with untill Scro said it might be backwards.

[Scro]

Originally posted by riotact
Maby I have both on the wrong side then.If I just switch the upper arms,the other one sits about 2" toward the rear of the bike.Ill have to try and swap them.Thanks

Make sure the other one is not upside down. According to the angle of the balljoint, that right upper is right side up. Just need to be swapped to the left side.

[riotact]

Ok.I'll give it a shot this weekend and see how that works out.Do you think I have them both on the wrong side or just the upper?

[Scro]

The more I look at it, the more I second guess myself. It's hard to tell where the caster is from pics. Have you tried calling Burgard? He could probably tell you fairly quick if the less curved side goes toward the front or back.

[riotact]

No I didnt yet.I figured I'd look around here first,because I remember seeing a thread with someone having a picture of them mounted but the pictures on the thread have been removed

[dustin_j]

You have the bottom a-arm installed correctly, and I'm pretty sure the top is also. Since they're +2+1 arms, the ball joints are further forward than stock, and you installed both arms this way.

I wonder if the top a-arm was made a little off. I believe the ball joint stud on the upper a-arm should be perpendicular to the quad frame, but it's at an angle. Also, the curved sides of the upper a-arm don't mount meet very symmetrically. Does the other upper a-arm look the same at the ball joint mount?

[riotact]

I haven't had a chance to get the other side on but will this weekend.I stopped after getting this side on and looked at it and thought this doesn't look right.I didnt really pay to much attention to the ball joins,I was more worried about the part of the upper a arm sticking out over the bottom one circled in red.The upper ball join is sitting 1/8 to 1/4" toward the rear of the bike.Yes the other upper arm at the ball joint mount looks the same as this one not symmetrical either.

[dustin_j]

I agree with you that it doesn't seem right for the front of the upper a-arm to stick forward more than the lower. I think my brother-in law's a-arms are burgard +2+1's, and his don't look like yours. I would think an a-arm manufacturer would want to build the arm close to symmetric (impossible with the +1 forward, but you know what I mean). Also, since ball joints are circular, you can maximize travel and minimize wear when the pivot of the ball joint is perpendicular to the rotation of the arm on the frame (not sure if this makes sense in words). Are these new a-arms? I don't think I'd want to run them.

[riotact]

No.I got them used.Ill get the other side hooked up and see how it looks and go from there.I did post a pic of this in the Burgard site sponsor thread.If I cant get it figured out Ill probly give him a call and send him a picture through email and see what he thinks.

[CJM]

I think they are backwards (on the wrong sides).

[riotact]

I'll get the other side on and take a pic of the whole thing together then Ill swap them to the opposite side and take another pic and see what you guys think.If I do have it on the wrong side,when I switch it the ball joint will be further to the back of the bike.I sure hope this is just a stupid mistake on my end :D

[crownandmonster]

Looks to me as if it has been bent. I would lean towards that especially if you bought them used.

[riotact]

I dont think they are bent.If you set them on a table next to each other they are both the same.Well except one is right hand and the other left.

[bkelley]

This is the best picture I could take with where my quad is at.

http://i.imgur.com/ikxuU.jpg

[riotact]

Thanks B.Would you happen to have a pic of the same side but just a little further back? It looks like yours stick out like mine do,maby I do have them right then.

[bkelley]

I'll pull it out tomorrow and get some better pictures for you.

[82toyota]

are u running stock shocks with thou +2 +1 a arms

[riotact]

Originally posted by 82toyota
are u running stock shocks with thou +2 +1 a arms


I have a set of Works triple rates that are going to go on there after I get them rebuilt but for right now yes.I just made them stiffer.

Thanks for all the help on this guys.Izzy got back with me a few days ago and said yes they were installed the right way.

[bkelley]

Good to hear. I was just checking back in to see if you had figured it out. Never got around to pulling mine out for some photos. Been really busy.