Probably of limited interest here (maybe everywhere), but noticed that one of my LeBS' has started selling Maxon's, a Swedish-manufactured 500w rear hub system governed to 20 mph here (I think). However 0-20 mph in three seconds isn't terrible (to me). Price a whopping $2850 for motor/battery/controller/display/throttle. Anyone have experience with these systems? Reportedly very prominent in NASA's programs.
Maxon Bikedrive
- Thread starter 2old
- Start date
I dunno about that specific one, but other stuff by them has been talked about before:
by thread
https://endless-sphere.com/forums/search.php?keywords=maxon&terms=all&author=&sc=1&sf=all&sk=t&sd=d&sr=topics&st=0&ch=300&t=0&submit=Search
by post
https://endless-sphere.com/forums/search.php?keywords=maxon&terms=all&author=&sc=1&sf=all&sk=t&sd=d&sr=posts&st=0&ch=300&t=0&submit=Search
by thread
https://endless-sphere.com/forums/search.php?keywords=maxon&terms=all&author=&sc=1&sf=all&sk=t&sd=d&sr=topics&st=0&ch=300&t=0&submit=Search
by post
https://endless-sphere.com/forums/search.php?keywords=maxon&terms=all&author=&sc=1&sf=all&sk=t&sd=d&sr=posts&st=0&ch=300&t=0&submit=Search
LockH
1 PW
ESB "Search found 25 matches: +Maxon"... including this thread.
... and I see they have a website for their "maxon bike drive":
https://www.maxonbikedrive.com/
... w/a motor they note as "Swiss-Made".
... and they note "... The power and speed is electronically limited e.g. to 20 mph (USA) or 25 km/h (Switzerland) to comply with Federal Regulations for e-bikes"...
Hmm... "electronically limited"... hmmm... :wink:
... and:
8)
... and I see they have a website for their "maxon bike drive":
https://www.maxonbikedrive.com/
... w/a motor they note as "Swiss-Made".
... and they note "... The power and speed is electronically limited e.g. to 20 mph (USA) or 25 km/h (Switzerland) to comply with Federal Regulations for e-bikes"...
Hmm... "electronically limited"... hmmm... :wink:
... and:
8)
I got to see one of these in the flesh a few days ago and am hopeful to get ahold of a sample for testing and comparison. It's the only really original motor technology to enter the hub motor space since the transverse flux motors (Höganäs etc) from a few years ago so that in itself is exciting. My hope was that a geared ironless motor like this could be always engaged with very little cogging since there are no iron losses, enabling an efficient geared motor with regen and low rolling drag, but the actual Maxon motor still has a freewheel in it so that's not on the table.
With no iron it also has orders of magnitude lower winding inductance than conventional motors, requiring a special controller with much higher switching frequencies and such. I was told there was "no way" you could drive it with anything other than the included internal controller, although to me that sounds more like a challenge than a caution!
With no iron it also has orders of magnitude lower winding inductance than conventional motors, requiring a special controller with much higher switching frequencies and such. I was told there was "no way" you could drive it with anything other than the included internal controller, although to me that sounds more like a challenge than a caution!
LockH
1 PW
Capital J! "transverse flux motors"... "Höganäs"... "geared ironless motor"... Love it when ya "talk dirty" about ebike teck. Hehe... Watt caught MY eye was the bit about "electronically limited" (then gives 20 mph as an EXAMPLE)? In other words, this same motor might be "pumped up" to the emerging Euro/German 45km/h speed pedelec? 
Tks
Tks
If the inductance is super low, you could add some inductors in series with the phase wires. While this introduces some resistance losses, you can minimize this with good sized conductors. A high quality inductor will have much less switching loss than a typical motor winding.
LockH said:limited" (then gives 20 mph as an EXAMPLE)? In other words, this same motor might be "pumped up" to the emerging Euro/German 45km/h speed pedelec?
Tks
From what I understood from my discussions with Maxon was that the fast motor option actually has different internal gearing. Or in their own words "The system is geared with a single stage, the reduction ratio depends on the version."
So their fast S-pedalec model might have a lower torque output than the normal 25 kph model because it is geared for a higher speed rather than just having a motor winding or controller limitation setting the speed. That's quite unusual if so, but it would mean it's not just an electronic limit in the lower speed models.
fechter said:
Yeah that's exactly what I was thinking, although it also depends on the eRPM not being crazy high too. We'll see if a sample ever winds up accessible to dissection.
LockH
1 PW
Hehe... "not being crazy high"... Watt? Ya mean like some North Americans might like "crazy high" speeds and power?
:lol:
:lol:
ScooterMan101
1 MW
142 mm Through Axle Adaptors available ! and boost as well.
Finally a Rear Through Axle Hub motor .
Able to use a 10 speed rear cassette.
And at 7 Lbs. that is 2.5 Lbs. lighter weight than the Mac Rear Hub Motor, and right around the weight , or even less than that of average 500 watt geared hub motors.
Made so as to be able to ride up mountains , altitude gain of 3,200 feet , with an average grade of 10 % . Just what many of us have been waiting for,
so much of a wait that many Mid-Drives are now being designed for those who want to climb Hills/Mountains.
It does however need a higher watt hour battery pack, or more importantly , to be sold without a battery pack to lower the price , and be able to run 14s packs .
High price is the only Drawback I see . Europeans / Scandinavian's don't realize the Low Wages most of us have here in the U.S.
Finally a Rear Through Axle Hub motor .
Able to use a 10 speed rear cassette.
And at 7 Lbs. that is 2.5 Lbs. lighter weight than the Mac Rear Hub Motor, and right around the weight , or even less than that of average 500 watt geared hub motors.
Made so as to be able to ride up mountains , altitude gain of 3,200 feet , with an average grade of 10 % . Just what many of us have been waiting for,
so much of a wait that many Mid-Drives are now being designed for those who want to climb Hills/Mountains.
It does however need a higher watt hour battery pack, or more importantly , to be sold without a battery pack to lower the price , and be able to run 14s packs .
High price is the only Drawback I see . Europeans / Scandinavian's don't realize the Low Wages most of us have here in the U.S.
I haven't been able to find any pictures of the insides yet. I'd love to see the rotor/stator arrangement.
I guess nobody is brave enough to dissect a stupidly expensive motor.
I see Maxon motors in a lot of medical equipment I work on. Very nicely made stuff.
One thing they did right is the cooling fins. That looks like a great setup.
I guess nobody is brave enough to dissect a stupidly expensive motor.
I see Maxon motors in a lot of medical equipment I work on. Very nicely made stuff.
One thing they did right is the cooling fins. That looks like a great setup.
spinningmagnets
100 TW
Here's a front drum brake from a 1950's motorcycle (Twisted Oz museum, Kansas). Aluminum housing, radial rim fins, ventilated sideplates?
LockH
1 PW
Re the Maxon... "a robust planetary gearhead"... seen here:
https://drive.tech/en/stream-content/easy-rider
https://drive.tech/en/stream-content/easy-rider
I am--just send me one prepaid and I'll post a thread for it. :lol:fechter said:
briangv99
1 kW
ScooterMan101 said:
the howl of those steel gears isn't great either
[youtube]mvwJDAImEHc[/youtube]
LockH
1 PW
^^ Nice. "Published on May 8, 2015" on YT... kinda curious whether "things" might have changed near three years later...
Similar threads
