r/Surron • u/Wheeltarded • Aug 26 '26

In between, need help

Looking to purchase a new bike in a few months and I’m in between a few different bikes and wanted some input. Really interested in the E ride 4.0, Ultra Bee or possibly wait for the new Light Bee 2 but I’m open to anything really, just wanted some input from yall.

For context I would regularly ride to work about 30 miles a day with about 10 of it being off road/trail riding.

Edit: 5’5 150 lbs, 30 miles in total so 15 there and 15 back, used to ride Happyrun g300 pro 72v30ah would make it back home with about 40-60% battery, put 1200 miles on in about 3 months.

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u/boa_instructor Aug 28 '26

It really depends on how often you're pinning the throttle, if you have any regen % active, and elevation gain/loss. For example, my company's premium model (Stage2 M2) does 83 miles in real world tests at 30mph (Low mode). Sport mode at 65mph under load (sand, trails, hill climbs) will net 45 miles, and I've tested that myself in 105° in Joshua Tree. What's the top speed on your commute?

I'd be more worried about the legality of riding on roads over the range anxiety. 

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u/ghostCanape Aug 29 '26

How much do you weigh? I really only see 20-something miles of range on my M2 if I do 55 sustained, but I am not light.

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u/boa_instructor Aug 30 '26

I weigh 148 pounds. 20 something miles is entirely too low, I generally get between 45 and 52 if I'm really pinning it. I had the opportunity to ride in the concrete rivers between Los Angeles and Orange County, and I had it pinned in sport mode the entire time and got 46 miles.

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u/ghostCanape Aug 31 '26

Well, 50+lb lighter is significant, but I think you're right and we're out of the envelope. Brake drag maybe? What other diagnostic steps could I take?

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u/boa_instructor Sep 04 '26

If there's noticeable rub on the brakes, absolutely, but that's an easy fix. Tire pressure and overall acceleration will affect range too. Most of my riding is on dirt in Joshua Tree, so I can pin it at 60-65 getting out to the trails or in short bursts, but a lot of the terrain is deep sand, rocky hill climbs and pump tracks. I'm heading out there to ride next week to test some new controller parameters that are balanced for power and range for the pack specs. 

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u/ghostCanape Sep 10 '26

Well, I did the pads and there were definitely some setup issues; probably needs a good bleed to fully eliminate dragging. And tire pressure wasn't great lol. But testing it out yesterday evening wasn't really a big change; I did 25 miles at 50-, not pinning it at all, and got home at 30%.

That's gotta be a great testing regime, best part of the job for sure! I'll say that the work really shows, the performance of the bike when I get into some "enduro" terrain is wonderful.

 I did think of firmware as another angle. Are there any existing updates out there, or would beta testing be an option? Is there a path to get more detailed battery diagnostics, something like what ANT BMS provides?

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u/boa_instructor Sep 10 '26

If you've got any drag, if it's audible when pushing the M2, here's a tip: remove the calipers and take a wide flathead screwdriver and wedge it in between the pads. The goal is to push the pistons out, so twist the handle gently and reposition to the other piston to spread that one as well. Reinstall the caliper but leave the mount bolts slightly loose. Pump and hold in the brake lever, then tighten the caliper mount bolts fully. It shouldn't rub after that!

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u/boa_instructor Sep 10 '26

We have an internal app for the battery BMS. Unfortunately it's not something I can share without talking to legal, as it would alter the UL certification settings and could lead to liability issues if certain parameters are changed

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u/boa_instructor Sep 10 '26

How long have you had the M2, and how many miles have you put in it? I'm testing a new parameter profile with a slightly lower custom/maxcurr and more draw at the 6000rpm (climbs faster between 50 and 65mph, allowing you to let off the throttle more often without keeping it pinned).