Originally Posted by SpecRC
Thanks fuzzion and steveM!
So how much more adjustable is the R1 vs S1 is it just small things that dont really need so much adjustment or is it things like caster/toe which would be helpful to adjust. Are sway bars worth there investment? Or minimal gains if at all.
You'll want the sway bars for sure, you do miss out on the lower arm adjustment as Jeff explained, you could always buy the R1 parts if you wanted them. The S1 comes with a few rear arm mounts, but I'm not sure what's available for the front. Shocks are fine, again few little tweaks such as Tamiya o rings if you want to, not 100% necessary. DCJ's or a geared front diff are also another option, although I'd perhaps try the car first and see what it feels like for you. Another thing you'll definitely want with the S1 is some alloy hexes, the car comes with plastic ones so throw those in the bin straight away. You'll also want either some flanged bearings or the new longer bushings for the layshaft. Other possible upgrades are the servo mount as the stock plastic ones on any car aren't great and a few sets of springs. I'm personally running Tamiya springs, I know some people like the Yokomo's. I also recently switched to Tamiya ballcups as the stock ones have quite a bit of slop and in my case came off pretty easily. Got some of the alloy R1 turnbuckles for them too, but they're not required if you don't want them - I'd say the ballcups are something you'll want though.
The S1 is less adjustable box stock than the R1, although you can easily upgrade it to have all those same adjustments. All you'd be missing is the materials that the R1 is made out of - so plastic bulkheads instead of alloy and composite instead of proper carbon for the chassis parts.