Stefan Mikes
Well-Known Member
- Region
- Europe
- City
- Mazovia, Poland
I visually inspected two Vado chainrings:
Deckas 48T is Narrow-Wide
Praxis 48T is Wave.
Deckas 48T is Narrow-Wide
Praxis 48T is Wave.
True and new to me.My Turbo Vado 4 is for the UK market and was manufactured in 2020. I have a spare chainring and have attached photos. From what you are saying there appear to be differences between your model and mine.
Majority of your problem is likely Torque of the chainring . It has to be exact on all of those tiny bolts . I've had teh same thing 3 times . Your manual should give you the specs for torque and a pattern as well to tighten . Doing it by hand and guessing won't workMy wife's Creo started making noise in the lowest two gears on a ride a couple of days ago. Riding next to her, it sounded like a derailleur out of adjustment. However, when I was able to look at it closely, it turns out the the chain is making micro-jumps as each cog moves onto the tooth (see video, which is in slo mo). In several decades of wrenching, I've never experienced this kind of behavior.
Prior to this problem showing up, her chain dropped (on a very bumpy descent), and ended up between the frame and the chainring, FWIW.
Any thoughts as to what may have happened, and a potential fix?
This is incorrect.You have to align outer chain link with the inner tooth. In your video, the outer chain link is on the outer tooth.
View attachment 78693
This is incorrect.
....
OUTER teeth of the chainring must mesh with OUTER links (plates) on the chain.
The ease of replacing the Praxis chainring on a Vado cannot be compared with the same process for Deckas (been there, done that)I now understand why a number of Vado users complained about the Praxis chainring because it didn't last long.
Yes, I followed the birth pangs of a newborn home bike mechanic.The ease of replacing the Praxis chainring on a Vado cannot be compared with the same process for Deckas (been there, done that)![]()
The picture of my chainring is of the original chainring.It all depends from which side of the Praxis wave chainring you're looking at it.
You are showing the inner side of the chainring as the drawing is on that side. Now turn it around and look from the other side, which is the side you normally see when the chainring is mounted on the bike. Then it is correct to say: mount the outer chainlink on the (now) inner tooth.
But what baffles me most with your Praxis wave chainring are the abrasions on both sides of your chain teeth shown. It shouldn't be like that, and it might be due to an incorrect chain line. I have marked your abrasion in red (regrettably "normal" on that side with wave system) and yellow (unusual on that side, even with wave system) in your picture I'm attaching.
Looking at the abrasions on your wave chainring teeth I now understand why a number of Vado users complained about the Praxis chainring because it didn't last long. My narrow-wide Deckas chainring doesn't show any abrasions after 2.500 km so I think it was a good choice to have switched to it.
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PS: mordase was the hedgehog beating the hare (me)![]()
The drawing as shown attached to my #28 is on the inner side of the chainring, facing the bike frame. At least it was that way from the factory with my Vado, and the Vados of others who commented in this forum.The picture of my chainring is of the original chainring.
The drawing, legend, printing, stencil, wording, etc., is on the OUTSIDE of the chainring as it faces AWAY from the bike towards the mechanic, NOT facing the frame of the bike.
Again, zero issues.
Are you saying that from the factory or when it was assembled it was done so incorrectly and it should be other than what it is?
So, just to be clear for my own knowledge, I will attempt to 'turn it around' today to see if it is mountable (the guard on the ring).The drawing as shown attached to my #28 is on the inner side of the chainring, facing the bike frame. At least it was that way from the factory with my Vado, and the Vados of others who commented in this forum.
And the abrasions on your chainring aren't normal, even not for a wave chainring.
I consider buying yet another Praxis for stockHeads up, you'll fix the Deckas chainring in 20 minutes next time.
Did you find the matching blue colour for it, to use your blue pedals?I consider buying yet another Praxis for stock![]()
It has been the same with my Praxis chainring: the diagram (showing how the chain links should be mounted) facing inwards (to the bike frame) and the protrusions of the threads on the opposite side of the chainring (which was free of any further wording, logos etc)....with the diagram, wording, logos etc all facing inwards towards to seat tube. This is how it was supplied from the factory. ...
there are circular protrusions on the opposite side ...
It would then "stand off" and not be flush, as those protrusions, nipples, whatever wording we use, mesh, fit, fall into place in the "dish" or receiving hole of the spider arm, and cannot be flush if reversed.As mine would have the protrusion pointing in towards the crank spider then a logical conclusion seems that the chainrings can be fitted either way around.