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Old 02-25-2018, 06:27 PM
  #12811  
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I believe losi fronts are the same offset as xray fronts. Losi rears need at least a +1.50 rear hex I think.
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Old 02-27-2018, 01:17 AM
  #12812  
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Has anyone experienced the rear left arm drooping down more then the right side?

I am using a 1 mm internal shim in the right shock and a 3 mm internal shim in the left and the left side is still lower then the right. (had to do this to keep the drive shaft from coming out of the diff out drive cup)

Things I have checked

*Chassis is not tweaked. Used a straight edge, all is good.
*Rear arms are not cracked or loose.
*Camber links are same length.
*Shock tower not cracked. Even measured the height of the shock mounts on the tower and both are equal height measured from the chassis flat on on set up board with shocks off.
*With shocks on, the left side drive shaft still wants to hang out the diff out drive about 1 mm more then the right side.
*Drank 3 beers, looked again and the left still sags lower then right with or with out shocks mounted. Drank three more beers (different brand this time) out come still the same. So it is not the beer.
*Also checked for play inside the diff housing with the diff installed and all is snug, no movement with the bearing in housing and no side to side play.

Hope someone can shed some light on what I am missing.

Also, one more thing, what change in handling should I expect if I move the rear hub hing pin to the inner hole? (Both hub and arm)
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Old 02-27-2018, 03:31 AM
  #12813  
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Originally Posted by PIHGUAM1 View Post
Has anyone experienced the rear left arm drooping down more then the right side?

I am using a 1 mm internal shim in the right shock and a 3 mm internal shim in the left and the left side is still lower then the right. (had to do this to keep the drive shaft from coming out of the diff out drive cup)

Things I have checked

*Chassis is not tweaked. Used a straight edge, all is good.
*Rear arms are not cracked or loose.
*Camber links are same length.
*Shock tower not cracked. Even measured the height of the shock mounts on the tower and both are equal height measured from the chassis flat on on set up board with shocks off.
*With shocks on, the left side drive shaft still wants to hang out the diff out drive about 1 mm more then the right side.
*Drank 3 beers, looked again and the left still sags lower then right with or with out shocks mounted. Drank three more beers (different brand this time) out come still the same. So it is not the beer.
*Also checked for play inside the diff housing with the diff installed and all is snug, no movement with the bearing in housing and no side to side play.

Hope someone can shed some light on what I am missing.

Also, one more thing, what change in handling should I expect if I move the rear hub hing pin to the inner hole? (Both hub and arm)
I donít think the diff is in the center of the car, hence the drive shaft plunge being different side to side.
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Old 02-27-2018, 05:12 AM
  #12814  
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Originally Posted by PIHGUAM1 View Post
Has anyone experienced the rear left arm drooping down more then the right side?

I am using a 1 mm internal shim in the right shock and a 3 mm internal shim in the left and the left side is still lower then the right. (had to do this to keep the drive shaft from coming out of the diff out drive cup)

Things I have checked

*Chassis is not tweaked. Used a straight edge, all is good.
*Rear arms are not cracked or loose.
*Camber links are same length.
*Shock tower not cracked. Even measured the height of the shock mounts on the tower and both are equal height measured from the chassis flat on on set up board with shocks off.
*With shocks on, the left side drive shaft still wants to hang out the diff out drive about 1 mm more then the right side.
*Drank 3 beers, looked again and the left still sags lower then right with or with out shocks mounted. Drank three more beers (different brand this time) out come still the same. So it is not the beer.
*Also checked for play inside the diff housing with the diff installed and all is snug, no movement with the bearing in housing and no side to side play.

Hope someone can shed some light on what I am missing.

Also, one more thing, what change in handling should I expect if I move the rear hub hing pin to the inner hole? (Both hub and arm)
Check the overall length and depth of the I.D. bore of the rear shock bodies to confirm they are both the same.
Maybe one shock is longer or one of the I.D. depths deeper than the other
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Old 02-27-2018, 07:02 AM
  #12815  
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can you please post pictures from the rear of the car.. without the shocks on the car.

thanks
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Old 02-27-2018, 07:25 AM
  #12816  
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Is the sway bar attached? Bent hinge pin? Bent C or D block? Good luck, Daniel and the other team drivers will get you straightened out w/ some pictures.
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Old 02-27-2018, 08:35 AM
  #12817  
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I concur with Tom87, the rear differential is not centered on the car. I'm running a 68mm drive shaft on the left side to compensate.
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Old 02-27-2018, 10:24 AM
  #12818  
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I haven't driven 4wd since the 90's and I'm no expert on building these things. I used to race a yz10 and the yz4sf and xb4 2018 look virtually identical. But I do like the support and info x-ray give.

Anyone driven both? Any noticible differences?
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Old 02-27-2018, 08:07 PM
  #12819  
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Hello PIHGUAM1,

How about trying to swap the Rear Shock Left to Right. Will the right side dropping more?

If so, then the total length of the shock might be the cause. One possibility that the shock end is not screwed in to the shaft equally.

Cheers..

Originally Posted by PIHGUAM1 View Post
Has anyone experienced the rear left arm drooping down more then the right side?

I am using a 1 mm internal shim in the right shock and a 3 mm internal shim in the left and the left side is still lower then the right. (had to do this to keep the drive shaft from coming out of the diff out drive cup)

Things I have checked

*Chassis is not tweaked. Used a straight edge, all is good.
*Rear arms are not cracked or loose.
*Camber links are same length.
*Shock tower not cracked. Even measured the height of the shock mounts on the tower and both are equal height measured from the chassis flat on on set up board with shocks off.
*With shocks on, the left side drive shaft still wants to hang out the diff out drive about 1 mm more then the right side.
*Drank 3 beers, looked again and the left still sags lower then right with or with out shocks mounted. Drank three more beers (different brand this time) out come still the same. So it is not the beer.
*Also checked for play inside the diff housing with the diff installed and all is snug, no movement with the bearing in housing and no side to side play.

Hope someone can shed some light on what I am missing.

Also, one more thing, what change in handling should I expect if I move the rear hub hing pin to the inner hole? (Both hub and arm)
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Old 02-27-2018, 09:03 PM
  #12820  
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it's the diff not the shocks. like a couple people said the diff sits right of center in the car so the left bone will always hang out a little more than the right. Not a perfect solution but I am running 68mm bones as well.

I would take the extra limiters out of your left shock and mic your shocks to make sure they are the same. then I would look at getting some longer bones or running a different pill setting to keep your bones from coming out.

Last edited by xyzracer; 02-27-2018 at 09:06 PM. Reason: spelling
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Old 02-28-2018, 01:35 AM
  #12821  
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Originally Posted by stanleyw808 View Post
Hello PIHGUAM1,

How about trying to swap the Rear Shock Left to Right. Will the right side dropping more?

If so, then the total length of the shock might be the cause. One possibility that the shock end is not screwed in to the shaft equally.

Cheers..
Thanks. Tried that. Drive shaft still hangs out.
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Old 02-28-2018, 01:57 AM
  #12822  
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Here is the picture.

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Old 02-28-2018, 03:14 AM
  #12823  
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Originally Posted by PIHGUAM1 View Post
Here is the picture.

If it's doing without the shocks attached then you have eliminated the possibility of the shocks being the problem. Must be something else
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Old 02-28-2018, 04:58 AM
  #12824  
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Originally Posted by PIHGUAM1 View Post
Here is the picture.

To me it looks like the ball stud on the left side of the tower is lower then the right side. Check that
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Old 02-28-2018, 05:32 AM
  #12825  
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I fail to see the problem, set both your shocks to the same length and you're good to go.
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