8/16/2023 0 Comments 2018 izip e3 dash class![]() It feels very zippy and torquey in throttle mode going from 0 to ~6 mph and is capable of hitting 20 mph if you pedal along. I tested one of the early versions of this TranzX motor in 2013 and wasn’t entirely impressed however, two years later in 2015 (at the time of this review) I found the motor to be quieter, smoother and generally more responsive. It strikes a balance between the more affordable low-end middrives that rely on cadence sensors only and can feel jerky and the more expensive high-end systems with shift detection and rapid drive cutoff. This ebike is made by Currie Technologies, a company that has been a leader in the US electric bike space since 1997 and offers one of the better warranties (lifetime frame, two year drive systems, one year battery) with a vast newtwork of dealers for testing before you buy.ĭriving the bike is a 350 watt geared centerdrive from TranzX. I love that the bike is available in two frame sizes even though both are high-step, the top tube is angled slightly and the frame is relatively light weight at ~52 lbs but still sturdy thanks to the triangular “diamond” tube configuration. The Kenda Juggernaut tires are 4 inches wide and can take 5 to 30 PSI for navigating soft or hard terrain respectively. If you like the fat bike style or plan to do trail, sand and snow riding then this is a capable option. While I do have a few basic gripes here including the lack of fender, rack and bottle cage bosses as well as the lack of a kickstand (like many fat tire bikes) and an early cutoff in throttle mode at ~6 mph, overall it’s an excellent ebike at an amazing price under $4k. It uses an efficient mid-drive motor system by TranzX for climbing and reaching greater speeds and distances efficiently. The E3 Sumo is one of the only fat electric bikes I’ve tested that is capable of performing above 20 mph as a US legal “speed pedalec”. Good Luck! If you do a conversion post pics of your bike when you've got it going.This is the review for the 2015 E3 Sumo, in 2016 an updated model arrived with sturdy thru-axles, an optional $50 boost mode that acts like a throttle and a slightly altered paint job… it also costs a lot less! Check it out in the full review here. It hasn't gotten hot on my rides, so I think that is sufficient for my needs. and I got a thick piece of aluminum and screwed it to the controller using comptuer heat sink compound, and zip tied that ass'y to the frame where the wind hits it. I programmed the controller to do pedal assist power in 100W increments, the small switch that mounts on the handlebars toggles the pedal assist level, at 100W I get over 80 miles on a single battery charge. Notes: I bought the wrong twist throttle by accident, you have to rotate this one forward for it to work, but it turns out I like it because sometimes when I'm standing up on a long hill I'll pull back on the throttle without intending to, so this prevents that. If you're at all nervous about getting this right, which is a concern since you don't want to waste money, simply asking them to handle it in email works great, their customer service is 2nd to none. IIRC they didn't list the SX2 in their online spoke length calculator at that time, so I asked them to cut the left and right spokes (which turned out to be the same length for my motor) based on the ERD I got from the manufacturer. I attached a picture showing the spoke lengths they calculated for my order, and an axle stabilizer I bought on ebay as an afterthought.ĮRD - Effective rim diameter (ERD) explained I emailed the wheel manufacturer to get the exact ERD since my measurements always come up with a different number, lol. Their spokes worked perfectly for my wheel. I found that single cross works fine for my style of riding, all street, I haven't had any problems over dozens of trips sometimes involving going off curbs or through potholes. If you tell them the *ERD of your rim they will cut the right length spokes for you to lace their motor to your wheel, you have to specify single-cross (how many times each spoke crosses another spoke) or other crossing options. I recommend you consider asking them if any of your hardware will work: from my discussions it seemed like none of it would work with their controller. I removed all of the old hardware and replaced it with Grin stuff, (order details below.) Grin has excellent customer service, I emailed them many times even apologizing if I was being annoying, they were totally supportive and answered all of my many questions. ![]()
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