Since I gave up on owning a Stromer ST5, I had considered several options that I could try at a local LBS:
- Trek Alliant+ 9.9S at Helen's Cycles
- Specialized Vadoo 5 at Cynergy Cycles
I noticed that both bikes have the same derailleur as the Stromer ST2: Shimano Deore XT.
However, unlike the ST2, both bikes shift with a noticeable klunk -- as if someone is hitting the bike.
At Cynergy, the salesman told me that one can learn how to shift smoothly by releasing the pressure on the pedals before shifting.
Although I understand the physics of it, I've grown leery of getting into a situation where the motor power goes through a chain & cassette drivetrain.
So, I decided to look for an ebike with an internal hub.
There are several that I considered; many have unique and attractive features:
- Cheetah E-Bike City
The first two feature the powerful Bafang motor; however, the lack of synchronization between the motor and the shifting turned me off.
The Cheetah can be configured w/ a Pinion hub; although the Neodrive Z20 250W is clearly not as powerful as the ST5's 850W motor,
it is hard to make an evaluation without experiencing the bike firsthand.
The problem with these 3 bikes is that there is no LBS nearby. Given that I'm not signing up for servicing my bike, I looked for other options.
And last but not least, I looked at R&M. Since it is clear that Chris Nolte is a big fan of R&M, I visited him at his shop
and really like the advice that I received there regarding the different R&M models. For my needs, I chose the Supercharger2 GT Rohloff HS.
I've had the bike for a few days and tomorrow will be my 1st commute. Already, I'm really glad that I chose the combination of the Bosch motor
with the E-14 Rohloff -- it's really nice to know that the system will optimally shift the Rohloff and decrease motor power.
This is by far the most important feature from the ST5 that I wanted to have on my new bike.
Although the Bosch Performance Line Gen4 with E-14 Rohloff is clearly not as powerful as the ST5 w/ Shimano DI2 drivetrain,
I think that after a while, I'll master pedaling at a high cadence and shifting like a Rohloff ninja.
There is only one accessory missing on the R&M that I purchased separately: a loud horn.
The ST5 horn was nice in that it was integrated but it was not very loud.
I haven't received the Loud Mini horn yet but I like the fact that it was designed with a theft-proof option.
Theft-proofing the bike is another factor that I really like about Chris.
So far, I'm happy to have switched from ST5 to the Supercharger 2 GT Rohloff HS.
The air suspension fork is really nice too! I look forward to riding this bike safely without maintenance worries.
Hope you are enjoying your bike.
I think you have had the bike for around a couple of weeks now. Do you mind sharing your experience a bit?
How is the acceleration and average speed of bosch gen 4 compared to stromer when you put the same effort? Which assist levels do you use and how is the battery consumption?
Once again enjoy your new bike.