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my YFZ450 a-arm install


Mullet Man

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still learning too jump so dont bag on me :laugh:

G/F's camera sucks for motion shots. its hard as hell to time it right

 

found a little jump to hit, probably hit it about 50 times or so. top of 2nd. i've yet to hit anything in 3rd

few nose heavy landings too, still ticking

http://i7.tinypic.com/2m5y16q.jpg

http://i15.tinypic.com/44jqbz4.jpg

http://i10.tinypic.com/49gh4cg.jpg

 

 

cutting a cookie

http://i7.tinypic.com/2vsgk85.jpg

 

very pleased, with this. :beer:

Edited by Mullet Man
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cool. why i ask that is, i'm not sure on ideal tierod too a-arm angles. thats what i was wondering about. but none of the ball joints or tie rod ends look stressed ( or "over angled", for lack of a term) at all in any position.

all of the aftermarket arms i see on banshees, the tierod too a-arm angle is no where near what this looks like.

update on pricing.

i sold my stock arms and tie rods for $100.

plus $25 for the replacement ball joint and $1 for a pack of 10 new cotter pins

plus i forgot i sold my stock shocks for $50 back in April

this brings my grand total down to $226 :notworthy:

Tie rod and a-arm angles should be the same, or very close to it. You start running them at different angles and you get bump steer.

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so does it handle alot better soak up the landing

 

 

it definately has more plush landings, especially when coming down nose first!

i couldnt be happier!

 

Tie rod and a-arm angles should be the same, or very close to it. You start running them at different angles and you get bump steer.

 

 

thanks for the info!

after riding today (about 2hrs. worth) i didnt notice any bump steer, or anything odd that made it hard to handle or uncomfortable

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it definately has more plush landings, especially when coming down nose first!

i couldnt be happier!

thanks for the info!

after riding today (about 2hrs. worth) i didnt notice any bump steer, or anything odd that made it hard to handle or uncomfortable

Bump steer is not something thats obvious like you might think. Bump steer isn't when you hit a bump and the bars try and jerk out of your hand. Bump steer is what happens when the suspension and steering aren't designed properly. As the suspension cycles, the wheels will steer one way or the other. The wide frame rails cause it on a banshee.

 

The ideal situation: draw a line between the ball joints on your a-arm. The tie-rod end should fall in that line. Same thing with the a-arm mounts at the frame. And your tie-rod should be at the same angle as the a-arms.

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thanks for that class!

i havent noticed how you described bump steer.

but it could be because i didnt know exactly what to look for either and just made an assumption on what i thought it to be.

 

maybe its just me but i never noticed it when the shee was was stock either.

i could just be more tolerable on this issue then others, just dont notice things like that or or it was minute enuf that it didnt affect me. or a handful of other reasons.

 

what negative effects can bump steer have?

Edited by Mullet Man
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thanks for that class!

i havent noticed how you described bump steer.

but it could be because i didnt know exactly what to look for either and just made an assumption on what i thought it to be.

 

maybe its just me but i never noticed it when the shee was was stock either.

i could just be more tolerable on this issue then others, just dont notice things like that or or it was minute enuf that it didnt affect me. or a handful of other reasons.

 

what negative effects can bump steer have?

Have you ever driven with the wheels toed out? Basically it makes the front end twitchy at speed. It will respond and turn quck, but its not a stable feeling. Makes you feel like your going to wreck. Thats what happens when your going through rough terrain on a banshee (or anything that has bump steer). Running 1/2" of toe in keeps it from being that bad, but the more toe in you run, the less responsive the steering feels.

 

If you've ever seen those pics of Sundahls banshee frames, he basically elminated all bump steer by crossing the a-arms over.

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thanks for that class!

i havent noticed how you described bump steer.

but it could be because i didnt know exactly what to look for either and just made an assumption on what i thought it to be.

 

maybe its just me but i never noticed it when the shee was was stock either.

i could just be more tolerable on this issue then others, just dont notice things like that or or it was minute enuf that it didnt affect me. or a handful of other reasons.

 

what negative effects can bump steer have?

Have you ever driven with the wheels toed out? Basically it makes the front end twitchy at speed. It will respond and turn quck, but its not a stable feeling. Makes you feel like your going to wreck. Thats what happens when your going through rough terrain on a banshee (or anything that has bump steer). Running 1/2" of toe in keeps it from being that bad, but the more toe in you run, the less responsive the steering feels.

 

If you've ever seen those pics of Sundahls banshee frames, he basically elminated all bump steer by crossing the a-arms over.

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well in that case, the bike feels very stable at high speed.

not twitchy at all.

it is alot more responsive but not dangerous responsive by any means!

so far i have hit high speed turns and small high speed jumps (deep and very wide ditch, over a mile long with 10 or so access roads, the small jumps at speed, crossing it into farmers fields).

 

i'm not an expert on the bump steer subject (obviously), but i feel completely comfortable at 6th gear pinned in that rough ditch!

 

thanks for the break down!

and i have seen pictures of the Sundahl frame...very wicked design!

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thanks for the how to mullet man. Im building a 98 banshee right now and did the a arm mod and it took no time at all ill take some pics for u to see thanks again

 

:whistling: :thumbsup:

you only need 1 washer per mount, ~1/16" thisk with a hole large enuf for the bolt to go thru

 

5 pages :beer:

i had some spare dust caps and used them as a washer looks great

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