(Very early) good morning, guys!
I had an issue with my Vado SL (a.k.a.
Fearless) in the last week of February. I had the e-bike transported to another city, where I was expected to do a training with an industrial customer. Having an e-bike with me made my life easy, from a breakfast at a service station at 4:30 am through commuting to a late dinner. However, something felt very wrong about my Fearless. There was a loud creaking in the motor area with each revolution of the cranks. It was making my rides inefficient and unpleasant.
To make a longer story short, it turned out the splined hole of the drive-side crank-arm got worn out. The reason was heavy beating that specific crank-arm was getting during my numerous crashes. (My brother swapped the L and R crankarms for a test and said it was obvious the R crankarm was damaged).
I could have ordered a full L + R set of crankarms for Specialized SL 1.1 motor in Germany:
CREO SL / VADO SL CRANK SL 1.1, ROAD/ACTIVE, 172.5MM, L+R ARMS, ALLOY, PRAXIS
webshop.bestbike.de
The cost including shipment would be some 90 euro.
It was also possible to buy a single Drive-Side crankarm:
Specialized Service Part
www.certini.co.uk
The price including shipment would be some 60 euro.
I decided to order the part via my Specialized LBS. The price I paid for the correct crank-arm was some 56 Euro. (Do not pay the attention to the bike lock!)
The rest was easy. I got my diagnosed Fearless with loosen pedal and crankarm. Now, the splined motor spindle was already treated with a lots of grease. I just mated the crankarm with the spindle, inserted a 20 cm (8") 8 mm hex key into the socket and started rotating the wrench clockwise. After the splines found each other, I simply rotated the wrench as long as it stopped turning, then gave a mighty push with one hand to provide the tightening torque (you actually do not need a long torque wrench to complete the operation: once the wrench stopped turning, you cannot turn it any more).
Done!
Let us see how it works today!