Hi all just looking at the Kalkhoff Endeavour Impulse S11 Alfine on the 50 cycles site and it says the bike has Impulse 2 and the range is up to 125 miles but just looking at the 2014 catalogue it says the bike has Impulse 2 Speed and only 85Km range, have they changed the specs or motor? is the Impulse Speed different to the Impulse 2 ?
Kalkhoff Endeavour Impulse S11 Alfine questions
- Thread starter Deus
- Start date
The Impulse 2 is the 2014 version of the Impulse crank drive rated at 250w. The is fitted to many Kalkhoff bikes, usually with a 17Ah battery that can take you up to 125 miles (in eco mode on the flat). The Impulse 2 Speed is the 350w unit or German 'S' class motor. With the same battery it could probably cover the same distance in eco mode on the flat and sticking to 15mph. However, this bike can go much faster, and the faster you go, the less distance you will travel.
Bosch limit the power of their standard motor on Alfine 11 bikes to look after the hub.
The Endeavour is not a Bosch bike, but I would be very wary of buying a Speed pedelec with a claimed 70nm of torque with an Alfine hub.
There's a derailleur Endeavour which would be a safer - and cheaper - bet.
The Endeavour is not a Bosch bike, but I would be very wary of buying a Speed pedelec with a claimed 70nm of torque with an Alfine hub.
There's a derailleur Endeavour which would be a safer - and cheaper - bet.
I have an Alfine 11 on the Rose and, as with most things cycling, there are things for and against.
Hubs are neater and cleaner - the higher chain line also keeps the chain cleaner - the extra few cm above the road really makes a difference.
Lower maintenance - there's just one cable to keep in trim, and even I can manage to line up the two little yellow dots on the hub which indicate proper set-up.
I had the first 500 mile oil change done and it did make a difference.
Shifting at rest - handy in traffic or any other time you forget to change down when coming to a stop.
Extra weight - even on an ebike you can feel the extra weight in the back wheel in comparison to a derailleur/cassette bike.
Gear range - this is a matter of opinion. I found first too high and had to tinker with sprockets to get it right.
If the Kalkhoff has as much grunt as they say it does, it won't need a particularly low first gear.
Pardon my amnesia, and I'm not sure your theory works in practice.
The chain ring will inevitably be the same one fitted to the 10 speed derailleur bike.
I believe the Shimano hub sprockets are the same and take a 10-speed/single speed chain.
It could be possible to slap a heavier duty chain on, but I expect a trained bike mechanic would tell you not to do it.
Someone with the technical knowledge (flecc again, probably) may be able to expand on that.
Shimano used to list their hub gear sprockets as 1/8" or 3/32" but don't always do so now.
Sturmey Archer ones are compatible and they do list in both widths so the correct larger 1/8" can be used on Shimano, Sunrace Sturmey and SRAM hub gears.
The snag is with crank motor units and the chainwheels supplied with them. Panasonic used to supply both 1/8" and 3/32" for the old units but I'm not sure if they do for the later one, Also I don't know about the Bosch and other crank units, but I suspect many will just go for the simplicity of 3/32 only.
However, it's the rear sprocket and chain that take most of the wear, so at least they can be longer lasting 1/8" types. Some makers also supply longer lasting high grade premium chain to help further.
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