VS4-10 Over/Under, Portals, and Gearing

[udlose]

Building up a VS4 for pure crawl. I run a 45T brushed Holmes and a 9T on my TRX4 Sport w/ a 2 speed and love the setup. I would like to do something similar with this rig. Opinions on gearing, etc. Thoughts on Over/ Under. Also, thinking about using portals in place of the RJ's. Worth it? Thanks in advance.

 

[sherbs]

Building up a VS4 for pure crawl. I run a 45T brushed Holmes and a 9T on my TRX4 Sport w/ a 2 speed and love the setup. I would like to do something similar with this rig. Opinions on gearing, etc. Thoughts on Over/ Under. Also, thinking about using portals in place of the RJ's. Worth it? Thanks in advance.

In one of my VS4's I use the Currie Portals with the over drive gears for the front and a Hurtz Dig. I dropped a full 3 minutes first time out with this set up on the indoor course. A combination of time and less back ups. Motor I use is a brushed Holmes 27T hand wound.