Deleted member 803
Ravi, how do you compare the Dapu 350W with the new ST2 motor??
Where did you do the test ride? My understanding is that the belt driven Focus bikes aren't shipping til the end of the month.
They must have gotten a press unit as my dealer tells me they are shipping end of june.The New Wheel has a Focus Aventura step-through with a gates carbon drive. As far as I know, all of the Focus Aventura Impulse Speed 1.0 bikes have had the combination of a Gates Carbon Drive and a Shimano Alfine 11 IGH for a while now:
Really, I can pedal up an 18% grade at 18mph on my Neo Carbon and about 23 mph on flat ground. Do you have an Easy Motion bike??My 350watt geared rear hub, going up a hill >5% grade isn't really able to do more than 11 to 13 mph, even with me pedaling. That's what I've noticed.
yes I have the 2015 easy motion Evo StreetReally, I can pedal up an 18% grade at 18mph on my Neo Carbon and about 23 mph on flat ground. Do you have an Easy Motion bike??
I would really like technical specs as to the watt drain difference between belt and chain. It's well documented in motorcycling that a Gates belt robs horsepower to the rear wheel more than a chain. With a motorcycle it's insignificant due to the amount of available power. I wonder with a 250w-350w ebike, how much power/range is lost.
Really, I can pedal up an 18% grade at 18mph on my Neo Carbon and about 23 mph on flat ground. Do you have an Easy Motion bike??
Is this information available? Who compiled it and on what equipment? I'd like to read it. The loss of power from just the belt on a motorcycle is 10-12% more than an o-ring chain. The belts are essentially the same.There is 1-2W of drivetrain power loss using a gates carbon drive belt, however, that's in comparison to a well-lubricated chain, and since not all chains are optimally lubricated, the truth is that it's a wash. Belts and chains are roughly equivalent. The 1W loss would make a substantive difference for people who are only capable of producing 10W of power, but since most cyclists put out 75W-250W, I don't think that the 1W loss is big enough to matter.
Is this information available? Who compiled it and on what equipment? I'd like to read it. The loss of power from just the belt on a motorcycle is 10-12% more than an o-ring chain. The belts are essentially the same.
Probably interesting only for the avid racer. Thanks for sharing.Gates says that belts and chains are equivalent, and though they're basically correct, tests have shown a 1W larger loss on a belt vs. a chain:
I ride a belt driven bike and can't really tell the difference between my chain powered bikes. Just that it is a huge PIA to change a rear tire. I have done that tonight and managed to mess up the rear wheel ... it's going to LBS tomorrow. Tire is changed but belt is inoperable I'm a lousy mechanic.
Gorgeous bike!Thought I would share with you a photo of a redesigned stem that provides a hidden conduit for cabling to keep the look of the bike very clean.
The Model is a 2016 Kalkhoff Aventura Speed 1.0 and contains version 3 of their Impulse Drive. The bike now has 80nm of torque and runs quieter. In addition the display has a USB port for charging plus it will show turn by turn navigation.
I have to wait until the fall to receive, but I have no problem waiting.
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Does the Focus have an in tube battery version as the Karlkhoff?