The R-Pack works in concert with software upgrades to give the 2018 Redshift MXR more power with greater consistency during a ride or a race, according to Alta. This increased motor performance is facilitated via a new 5.8 kWh R-Pack that uses a new cell chemistry for greater energy density and increased performance while also operating at cooler temperatures than the 2017 battery pack. more than the 2017 Redshift MX’s motor output. The 2018 Redshift MXR’s 5.8 kWh R-Pack boasts a new cell chemistry for greater energy density.Īlta claims that the 2018 Redshift MXR’s 350-volt electric motor, which is capable of 14,000 rpm, puts out 50 horsepower and 147 lb-ft of torque at the countershaft-that’s a whopping 10 horsepower and 27 lb.-ft. Alta’s 2018 Redhsift MXR ups the electric dirt bike performance stakes with more power, an improved battery pack, WP suspension and less total weight. Will probably revalve/respring the rear one of these days when time and money allow.Alta Motors continues to push motocross technology forward in its own way, namely without the use of an internal combustion engine to power its motorcycles, and today the Silicon Valley based high-performance electric motorcycle company announced its latest and greatest effort, the 2018 Redshift MXR. Minor changes to the clickers in the rear as I was getting bucked a little with the new fork setup. Based on my sag numbers, I'm still at an OK rate, but I've had to use almost all the preload adjustment to get there. The rear still feels OK, but subjectively a little soft compared to the front. I can't believe the EX didn't come with this setup. ![]() Started with the clickers in the "factory" position (11 out on both) and only had to add a few click of rebound to get it set. For reference, I'm riding fast and flowy single track pretty aggressively. However, the high speed compression still soaks up most the the chop and sharp edge hits, but the low speed compression doesn't bottom out and can actually ride whoops without diving the front. Naturally it feels stiffer with the new springs, and it is a little bit rougher ride than stock. Wow, what a change! The bike feels totally different, and all in a good way. Thanks No other internal fork mods, just a new shim stack, springs, and oil height for the front. ![]() So I ended up re-springing and re-valving the front forks on the EX with the factory developed MX stack. I set it to 100mm a while ago with a friend, but he was doing the measuring.īike: 260-ish (all lights/street hardware removed, bathroom scale read 260-265 right before it broke) If I have lots of preload, would it make sense to go to a stiffer spring? Would I also need stiffer fork springs to match? Also, take the race sag number below with a grain of salt. ![]() Quick question then on springs: I've pretty comfortable with how my rear is set up, but to get it there I've had to almost max out the preload. The fluid has 45 hours on it so I'm sure that is roasted, which could be part of it. Plus, the front rebound clicker is all the way in and I'm still getting bounce, so valves seem like a good thing to do. Got it running pretty good but a blew a fork seal, so I figured I should do valves and springs while I'm in there. Also, I've been dialing in the stock EX settings over the spring and summer.
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