Specialized turbo vado SL 4.0 chainring information.

[Stefan Mikes]

I rode approximately 40 miles this weekend and did not have any chain drops. Could be placebo effect, however, I feel more confident under load and during shifts while under motor power with this Garbaruk chain ring. I did pass through the route where I CONSISTENTLY (but not always) drop the chain and had no issues.
Again...looking at the chain fitment on the Garbaruk ring....the teeth extend beyond the chain seemingly making it FAR more difficult to lose the chain. Additionally....the chain seems more tightly attached to the ring teeth when compared to the OEM Praxis.

So far so good.

I did realize: Should the Garbaruk drop the chain and should that chain lodge between the motor and the inside of the chain ring as has been occurring with the Praxis....it would require a slightly more difficult surgery to re-attach the chain. The OEM Praxis required only a 5mm allen key to remove the chainring enabling the chain to be reattached. The Praxis uses the chain ring guard and bolts (without nuts) which attach to the Praxis chainring which features threaded holes. The Garbaruk holes are not threaded....so the 5mm bolt attaches to a 7mm nut (more standard chain ring hardware). In other words....should I have the same problem with the Garbaruk....it would be a major P in the A to reattach while out on a ride.

Jason, I replaced a 32T Deckas chainring with a spare 42T Garbaruk one (and used a new longer chain) this week. I usually do the work with the e-bike inverted for better access. Now, I tried to place the KMC e11 chain on the chainring teeth the wrong way. Guess what. The chain just didn't want to be installed in the wrong orientation! The tooth pattern there is the chain links will snap onto the teeth only in the proper orientation! Therefore, I needed no diagram or whatever

FYI, my drivetrain is Shimano 5100 now, 11 speed, 11-51T cassette.

Besides (if anyone asked), a 48T chainring would fit a Vado SL frame just barely (and that might even depend on the frame size) so I do not recommend anything bigger than a 44T.