I have a 700 purchased/received in June 2020 as well as a Limited received the first week of this year.
On the Limited, I reset my max top/supported speed to 31, and it feels like it does help me at that speed. I don't go that fast very often. The highest wattage I've ever seen on the display (and I look at it a lot to see what the motor is doing) is 937 watts. 91x watts is more typical of the maximum wattage. These kind of numbers only show up when the battery has a pretty full charge. Otherwise, it maxes out in the 800's or even 700's if the battery is near the 48 volt level.
My 700 hits 999 watts anytime I hit the throttle and have at least 48 volts available. It also feels like it has a lot more strength on take-offs - crossing intersections when the light turns green. The Limited feels pretty anemic crossing intersections. I typically leave the Limited in level three (of three levels) whenever I ride. But it feels reasonably strong when I ask for it to increase speed when already doing 20+ mph. I love the torque sensor over the speed-limit-type cadence sensor. If I could convert the 700 to a torque sensor, I'd do it.
I did a big write-up/comparison of the two earlier this year. Search for it if you'd like.
One day I am going to try an experiment - swapping rear wheels. Then maybe I could see if the Limited motor could feel stronger with a different controller.
That's interesting.
https://ride1up.com/product/700-series/
R1U 700 48V Geared Hub Shengyi Motor 60Nm.
Nominal rating of 500w) = 10.6A
R1U Ltd 48V Geared Hub MXUS Motor.
Nominal rating of 750w. = 15.6A
R1U - and MXUS - provided documents - on this forum - showing this is a "special order 1000Watt Cassette Motor", unavailable to the public.
MXUS advertises this Motor (sans-cassette) as 1000/ 1500watts. MXUS told me it "is too powerful for a cassette".
Again, I've published the entire cut-and-paste conversation.
As 'legal' Hubs go, this one fit's in with Bafang's departure from the market - in a sense.
Both run the 48V22A Lishui, 22A (1056Watts) Controller and 48V14ah Samsung 18650's
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Considering the identical 750 x 1000watt controller:
1) The Shengyi Motor
(nominal rating of 500w) would have to be juiced 150% of capacity to reach 750watts and be on par with the MXUS' normal power output. Right in the perfect range.
2) Shengyi rates that motor at 60Nm. I assume that's "peak" power on a test-bed with Max current available.
2) MXUS certifies R1U's custom XF19C is their '1000Watt' non-cassette only version, created just for R1U in cassette iteration.
You're invited to read my posts showing all the communications with MXUS and R1U.
3) I (sorta) think you're correct. The 22A controllers should (predictably) blast the Shengyi past it's full potential, while petering out providing calories for a much larger MXUS' 'all day consumption'. But uphill, under load the MXUS should destroy the lesser powered, quicker to it's red-line 700 that weighs 62lbs, while the 40% more powerful Ltd weighs 58lbs.
The MXUS, using 1/2 of it's power range is running cool, while the Shengyi is running full Heart Attack mode, so how can a 60Nm rated 500watt motored bike be faster that a 100Nm rated 750watt bike, I ask myself?
Well, the 700 has a HUGE advantage.
Unlike the Ltd's cable entry from the bottom, the 700 is from the side of the frame.
My Ltd became sluggish. R1U said "check the wiring, then, check the wiring, then if all else fails, check the wiring".
Then I had an epiphany, it hit me to check the wiring. Glad I thought of it, I found crush damage to my display signal wires.
Close inspection showed problems in several areas. I spliced, zipped close, hit the pavement, and the machine went 999watts nuts.
I reset the display. Ahhh. There we are: Range improved 25%. Level 3 is ridable (but downshifting being down right dangerous). Too much power. Woo Hooo.
A few months passed, power reduced over time, I began having minor power cut-outs on long hills, then the TS quit.
I throttled home
, tore down and went further up that soft line with a magnifying glass.
Same story: Stress from fork turning. More damage. I tore off the soft cover. What a mess.
Short ending: Chopped; soldered; shrunk fit, wrapped, etc. Bike's faster, even better range. Best it's ever worked.
Long ending: After removing the sheathing, micro inspection
showed damage to the wires beneath in numerous places. Bright wire was apparent. Magnified, numerous micro-wires were crushed, separated and not conducting. I gorilla-taped the whole soft-wire group against the frame, flush, then around the head-stay and up to my bars. No twist effect problems. No fork head-clamp shoving anything around. No more crush possible and no problems since.
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Flexing those hard shift/ brake cables grinds the soft wires. The signal-wire bundle's soft outer casing is no match for the hard cables, crunching them together with every turn of the fork.
Crush. Flex back and forth. Then stretch.
Look yourself at R1U's site. You can see the grommet crunched out of place on the Ltd.
Spiral sheathing is useless. The stress point between the frame and cables crushes right between the spirals.
Having inserted my spiral wrapped bundle to various depths (the grommet being useless), the damage was also in various places.
I'm working out a permanent fix, thinking the solution is hard sheathing the signal wires.
So, considering the initial damage happens quickly, and the Ltd's resistance values are quickly a mess, you may be competing in the 'Special Olympics' Class ... like I was.
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Regarding controllers:
My Ltd's dual 6mm torque arms (plates) and no-expense-spared mods to the entire fastener set allow me to crank 5000Watts without worry.
A larger controller won't fit the Ltd's housing anyhow. Wrong dimensions.
The work's all photo-published in R1U forums - except my 'filing the dropdowns' to perfect the rear alignment. I'll photo-doc that when I'm ready to paint for the 'before/ after' show off.
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I'm assuming my display wires are damaged in places I couldn't see to splice, and splicing changes resistance.
Only solution for me is ordering a new display, snipping off that flimsy sheath and repairing.
If I don't like the clearance results (likely), I'll drill a hole in the side of the frame - for a correct entry point - chamfering the edges to accommodate the cable without crushing/ stretching in any fork position - short of a 270 degrees spin.
Don't believe me just watch.
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You ain't alone. A lot of 700 owners singing high anecdotal praises that fly in the face of 'number's logic' - can't be wrong.
A 'consistently reliable machine' is the consensus.
I think that bottom 'cable entry' on the Ltd is a huge part of the problem.
A custom 25Amp (1500Watt) controller in the Ltd's 22A Shell would help a lot too.
The MXUS is starved.
Thanks for the great info.
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Hey, gotta go. Working on my wheelies in local industrial area.
I am,
F'nF