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Yz2 drive shafts

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Old 10-09-2019, 07:53 AM
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Default Yz2 drive shafts

Hey guys. Ive been getting into Yokomo lately. I bought a used ca and dtm3 last week.
Going over the manuals and online research Ive noticed variations in length of the rear driveshafts.
This inquiry might have been asked before so pardon me but just wondering if its due to the differences in ca and dtm diffs? Arm length??
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Old 10-10-2019, 06:16 AM
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I don't have any experience with Yokomo, but I have seen other brands of cars offer varying length of out drives and shafts as a tuning option, I think this is similar to what Durango once patented with a dynamic plunge setting in their CVD's:


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Old 10-10-2019, 06:59 AM
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I think he is referring to different dogbone lengths. The many and confusing variants of the YZ2 series of buggies came with an even more confusing array of different types of arms, hubs, and mounting options, etc. Different driveshafts were made available to compensate for the various changes in lengths involved. To a large extent, you can mix and match these parts as hopup options to achieve your desired geometry. Just be careful of using the correct driveshaft length.
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Old 10-10-2019, 07:06 AM
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Originally Posted by Sir 51D3WAYS View Post
I think he is referring to different dogbone lengths.
I am specifically talking about different dogbone length, otherwise known as "plunge depth", this can be changed by adjusting the length of the out drive, adjusting the length of the dog bone, or in the illustration I posted above from Durango, the length can be adjusted on the CVD pins, it effects the aggressiveness of corner speed.

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Old 10-10-2019, 08:23 AM
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The dogbone variants were not originally intended to adjust the plunge depth. It's actually for two different sets of arms and two different sets of hubs:
  • 69mm bones are to be used with the standard DTM2 rear arms, also known as long or S4 arms
  • 68mm bones are to be used on the CAL3
  • 67mm bones are to be used with the short rear arms, also known as S3 arms.
  • 66.5mm bones are to be used with the optional 0°offset rear hubs (very rarely used
I suppose, given the right droop and ride heights you can adjust plunge with 67/69mm bones... but it would be tricky.

Edit: the short bones are 66.5mm, not 65mm.
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Last edited by mtbwrench; 10-10-2019 at 10:50 AM.
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Old 10-10-2019, 09:48 AM
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new car if I recall correctly uses 68mm bones.
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Old 10-10-2019, 10:38 AM
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Originally Posted by Cain View Post
new car if I recall correctly uses 68mm bones.
Correct (for the caL3).
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Old 10-10-2019, 10:48 AM
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Originally Posted by Cain View Post
new car if I recall correctly uses 68mm bones.
I'll edit my post to include these as well. (I know absolutely nothing about carpet!)
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Old 10-10-2019, 11:38 AM
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one thing at least that appears consistent is the axle itself .
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Old 10-10-2019, 03:44 PM
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Yeah after looking at a couple manuals for the different models, there are different length rear arms available and the corresponding dogbone length. Confusing at first
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