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Tech bros think this is what we want in an ebike
- Thread starter harrisonpatm
- Start date
lnanek
Power poster
I guess no one would buy in the US if it didn't go max speed allowed for ebikes so they created a price difference by locking the assist multiplier instead 
Although whoever creates those marketing materials doesn't pay attention to what they're doing. They clearly state they have a price for the unit then say only TBA in the chart right below that. :/
I tend to have a distrust of places that don't pay attention to details like that--makes me wonder what else has not had sufficient attention paid to it, though at least so far it's just a single marketing material here.
I tend to have a distrust of places that don't pay attention to details like that--makes me wonder what else has not had sufficient attention paid to it, though at least so far it's just a single marketing material here.
Anyone in Austin TX? You can test ride the TM-B! Happening right now Mar 13-16!
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ALSO and Rivian are electrifying SXSW. Join ALSO in Austin, TX, March 13–16 to test ride the TM-B ebike, talk EVs, and experience Transcendent Mobility.
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OlderGiantFan
Regular
TMQ Pedal assist quad, personal version, charges with a USB-C port.
docw009
Minor legend
I will accept the Rivian as a two wheel EV, but not as an ebike. The latter is partially powered by the rider, with assist from the motor, The Rivian is all motor, but the rider can add a little power to the battery,
I didn't read the Rivian claims, but Google Ai did, and it says the 60 mile $3600 model has a battery rated at 538 WH, while the bigger one is 838 WH and claims 100 miles. Wow. That's impressive. It's around 8 Wh/mile. the same number I get on my eebikes at 12 mph. The motor is putting out 100 watts, That's 100 Wh in an hour and I travel 12 miles. 100 over 12 is 8 WH/mile.
The difference is that on my ebike, I am pedalling enough to help the motor. I estimate about 50 watts, How much power does the rider put back into the battery on the Rivian? Google says a human could generate 100 watts for an hour on a bike powered generator before falling over. Cut that to 50 and most people could do it, That's like riding at 8 mph. Maybe the RIvian numbers will hold up.
I didn't read the Rivian claims, but Google Ai did, and it says the 60 mile $3600 model has a battery rated at 538 WH, while the bigger one is 838 WH and claims 100 miles. Wow. That's impressive. It's around 8 Wh/mile. the same number I get on my eebikes at 12 mph. The motor is putting out 100 watts, That's 100 Wh in an hour and I travel 12 miles. 100 over 12 is 8 WH/mile.
The difference is that on my ebike, I am pedalling enough to help the motor. I estimate about 50 watts, How much power does the rider put back into the battery on the Rivian? Google says a human could generate 100 watts for an hour on a bike powered generator before falling over. Cut that to 50 and most people could do it, That's like riding at 8 mph. Maybe the RIvian numbers will hold up.
chuyskywalker
Regular
Price and tech aside, the whole concept is a non starter (in CA, and most places that adopted the 3 class system) because:
These are not "fully operable pedals" as far as I can see. Maybe, maaaaaaaybe if you can pedal while there is no battery and power can be immediately and directly sent to the motor...but...man...what a slog that's gonna be.
These are not "fully operable pedals" as far as I can see. Maybe, maaaaaaaybe if you can pedal while there is no battery and power can be immediately and directly sent to the motor...but...man...what a slog that's gonna be.
Anyone test ride the TM-B yet?
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I test rode both the launch and base edition last Sunday at Cunningham Park NYC and was totally impressed! Amazing torque, quick acceleration, great suspension, easy to ride.
Interesting that the base model (with the 5x assist) was set up the same as the launch edition (10x assist) so it felt exactly the same power wise. Only difference was the suspension (coil springs instead of air). This suggests that the base model has the same drive train and can be hacked.
Another interesting thing was the throttle was not working at first (on the launch edition). After working the menu, they were able to get the throttle to work. I was told the reason it didn't work was because the 6 TM-B test bikes was set up for California which does not allow throttle. Is that true? They were unable to make the throttle work on the base model that I test rode- don't know about the rest (4) of the test bikes.
edit on throttle in California:
"Yes, California e-bike laws allow throttles, but only on specific e-bike classes. Throttles are restricted to a maximum speed of 20 mph and are completely banned on faster Class 3 models."
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I test rode both the launch and base edition last Sunday at Cunningham Park NYC and was totally impressed! Amazing torque, quick acceleration, great suspension, easy to ride.
Interesting that the base model (with the 5x assist) was set up the same as the launch edition (10x assist) so it felt exactly the same power wise. Only difference was the suspension (coil springs instead of air). This suggests that the base model has the same drive train and can be hacked.
Another interesting thing was the throttle was not working at first (on the launch edition). After working the menu, they were able to get the throttle to work. I was told the reason it didn't work was because the 6 TM-B test bikes was set up for California which does not allow throttle. Is that true? They were unable to make the throttle work on the base model that I test rode- don't know about the rest (4) of the test bikes.
edit on throttle in California:
"Yes, California e-bike laws allow throttles, but only on specific e-bike classes. Throttles are restricted to a maximum speed of 20 mph and are completely banned on faster Class 3 models."
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lnanek
Power poster
I'd kind of like one, but only if the throttle went to 30mph when pedaling. Just call it a boost instead of a throttle or something. Should be legal since technically it is just adjusting the PAS settings on the fly.
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thepronghorn
Regular
I rode a TM-B yesterday. It accelerates very quickly - feels like well over 2 kW peak based on my bike being 1200W max. The controls are very well tuned - acceleration, regen braking, 28 mph speed limit, and traction control are all dialed in. The pedaling feels less like a bike and more like a motorcycle that you control by rotating the pedals. The cranks feel really short, the q-factor feels pretty wide, and the stock pedals are the cheapest parts on the bike. I hope it would feel better to pedal with proper cranks and pedals. The regen works very well, brakes are strong, suspension is plush, belt is silent, but there is some gear noise. It's also very heavy. Bike rack or a couple steps is doable, but a flight of stairs would be a ton of work. I guess it's like the rest of Rivian's products - an SUV. It's what Americans love, but I wish we appreciated small, efficient transportation more.
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