Originally Posted by vlozity
so that you dont get confused, stop referencing the TB Evo blocks. refer to the 415 and TA05 blocks only ... link
Your link makes it more confusing because the '1' series and the non '1' series are both listed as hop-ups for the TA05.
Here is how it works. (lets ignore the '1' for now, and assume your car has 0 degree uprights fitted).
Everything is referenced to the A suspension mount. This is the standard width
suspension mount is most of the current Tamiya cars (TA05, Evo's, 415's and TB02's).
Any suspension mount with a 'x' at the start is smaller in width than A.
think of it this way
A = 0
x = negative numbers.
so as ttso said perfectly correct earlier they narrowest suspension mount is XD and they get progressively wider as you go to E.
eg XD, XC, XB, XA, X, A, B, C, D, E
What does this mean:
If your car is fitted with standard, probably plastic parts for TA05, then you will have;
A front and A rear = 0 degree toe in
change now to
A front and B rear = 0.5 degree toe in
A front and C rear = 0.5 degree toe in
XA front and A rear = 0.5 degree toe in and slightly narrower track.
So you can change suspension mounts to adjust the "track" (or width) and also the toe-in.
All the '1' means is they are 1mm lower than the standard (non '1') suspension mounts.
so if you want to set "kick-up" of "anti-squat" you can actually use a mixture of the '1' and standard mounts.
Dont forget when setting toe, many cars have toe-in built into the rear hub carriers.
TA05 on Rear
1 Degree hub carrier, T53685 1A bridge suspension mount front and 1B on rear. Which gives standard kit width with 1.5 degrees rear toe-in.
EvoIV on Rear
1 degree hub carrier, X front mount and C rear mount. Which gives 2.5 degrees rear toe
Hope this helps