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Yokomo YZ-2

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Old 11-11-2021, 01:35 AM   -   Wikipost
R/C Tech ForumsThread Wiki: Yokomo YZ-2
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Last edit by: lexusbest
Welcome to the YZ2 Wiki!


Features for the lastest specification YZ-2DTM3.1
  • Long specification for dirt Main chassis Inheriting the chassis cut of dirt specification, it is longer with the same wheelbase as CAL3.
  • Aluminum front suspension mount.
  • Z2-DTM2B F2 body.
  • JConcepts ASTRO High Clearance 7inch Wing.
Features for the lastest specification YZ-2CAL3.1
  • Long specification main chassis for carpets. Long wheelbase that enables even higher speeds.
  • Steel front suspension mount.
  • Z2-DTMBL S2 Lightweight body.
  • Z2-CAL2W LMR Wing.
Common features for the lastest specification YZ-2DTM3.1 / YZ-2CAL3.1
  • The conventional position and the position of the suspension arm pin 1 mm higher can be selected on the front and back of the front suspension mount.
  • Bulkhead integrated side plate with increased rigidity.
  • The kingpin position has been changed with the new steering hub carrier, the axle position has been lengthened by 1 mm, and a steering stopper has also been added.
  • Battery holder that is easy to adjust according to the height of the battery.
  • Separate the rear mount base and upper arm holder to increase the flex around the rear and improve traction.
  • Z2-018-5 5-hole shock mounting specification Rear shock tower.
  • S4-S1S 3.0mm shaft specification front shock.
  • S4-S1M 3.0mm shaft specification rear short shock.
  • S4-008R5B L5 / LD Rear suspension arm (Φ3.5 pin).
  • Z2-01069 Rear universal shaft (69mm bone).

Setup Sheets can be found here

DT CA DTM parts comparison

YZ2T Tranny Conversion List

YOKZ2-300RFT
YOKZ2-302CT
YOKZ2-302T
YOKZ2-304T
YOKZ2-503I
YOKZ2-0023

CAL3 manual
DTM3 manual



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Old 01-11-2018, 07:57 PM
  #3706  
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Originally Posted by PSOMMERTON
Guys. I tried two gear diff tonight on carpet but it just lost drive/sounded awful with any serious throttle. Are you to just remove one pair of gears cones and their rod leaving the other pair and rod as I did or am I missing something? Thanks. Phil
Sounds like maybe it wasn't shimmed quite right? jumping teeth when it went under a big load.
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Old 01-11-2018, 09:20 PM
  #3707  
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Originally Posted by mes
Yokomo fanboy and Xray just does not work!
Works for me.
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Old 01-11-2018, 09:51 PM
  #3708  
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any news on dtm WE, when amain will receive first batch?
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Old 01-12-2018, 07:10 AM
  #3709  
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Originally Posted by sickpuppy1
Sounds like maybe it wasn't shimmed quite right? jumping teeth when it went under a big load.
what shimming do you recommend outside of what stock 4 gear uses?
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Old 01-12-2018, 07:51 AM
  #3710  
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When it comes to Shimming I take the thinner type and bow them dramatically and then slip them on so the bowing faces away from the component because it places resistance on 2 points, and in this case, when you close the gear case onto it, it should apply even pressure to both sides and the diff can move slightly side to side without ever going too far. This also prevents binding you can encounter by shimming the traditional way.

I also use this technique on my steering systems so there is zero play and I never have a dead zone where the car can veer slightly to either direction. On my cars straight is straight.

Not sure if you guys can picture it but if enough people want I can put together a diagram later.
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Old 01-12-2018, 09:13 AM
  #3711  
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Due to the new Schumacher Cactus, Eos carpet and hard slipper setting, we are seeing some other strange things. We do have broken diff gear axles. These tend to break at the machined part of it.
When using only 2gears, we use a cut hinge pin instead.
Maybe your is brokentoo.
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Old 01-12-2018, 10:21 AM
  #3712  
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Default 2 gear diff?

thanks guys. Will check that out. Any alternative to takign two gears out for more rotation? lighter oil perhaps
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Old 01-12-2018, 10:34 AM
  #3713  
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Originally Posted by PSOMMERTON
thanks guys. Will check that out. Any alternative to takign two gears out for more rotation? lighter oil perhaps
yeah if the option is possiblity of broken gears versus just going lighter with 2 gear, I think i'll go 2 gear till I hear more on this.

was going to do 7K 2 gear, so maybe 3 or 4K 4 gear?
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Old 01-14-2018, 02:46 AM
  #3714  
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Originally Posted by sickpuppy1
Sounds like maybe it wasn't shimmed quite right? jumping teeth when it went under a big load.
Thanks. I took it apart again and was able to identify more shims were present that stock/ manual suggests but managed to get one more in on the one side of the outdrives so we will see if that helps. thanks.
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Old 01-14-2018, 07:01 AM
  #3715  
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Nothing broken or no chipped teeth though?
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Old 01-14-2018, 10:43 AM
  #3716  
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okay so in general if we are doing 2 gear do we need to add more shims?
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Old 01-14-2018, 11:08 AM
  #3717  
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I would say shimming is more critical to make sure there is minimal play between gear sets.
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Old 01-14-2018, 01:40 PM
  #3718  
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When will the cars be available? Everything 2wd is either out of stock or discounted?
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Old 01-14-2018, 01:55 PM
  #3719  
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No issues with me running 2 gear with the normal shims per kit. That’s in high grip carpet.
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Old 01-14-2018, 04:28 PM
  #3720  
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Finally got my new to me YZ-2 DTM all ready to hit the track...can't wait for next weekend to try this thing out. So far, my other buggy is a B6, I really like the look and feel of this car. I am hoping it is just as smooth on the track.



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