NSR50 Swingarm Length

[sprintcarfan]

I've got an NSR50 shock I'm retrofitting to a YSR frame (modifying the swingarm and upper shock mount). The motion ratio between the YSR and NSR swingarms appear to be different, just from what I can tell from pictures and comparing the spring rates. Can someone measure from the swingarm pivot to center of axle slot, and swingarm pivot to shock mount hole for me? Thanks in advance.

[PlanetMinis.com]

[johnson05]

Looks to be about 10.3 and 20.4 cm. Thats just using a tape measure and not a vernier caliper or anything.

[sprintcarfan]

I found a Japanese site selling used NSR50 swingarms with some dimensions. They are saying (if the translations is correct) swingarm pivot to axle is 41.5cm which sounds right, the YSR swingarm is 37.5cm. 10.3 sounds right for the shock to swingarm pivot dimension, but not the pivot to axle dimension?

[johnson05]

Sorry I forgot to measure the total swing arm length. The measurements I listed were from the pivot point to the top and bottom of the shock. Total length should be longer than stock if you plan on a beefier motor. The placement of the shock pivots however will be crucial.