Good points.
Likewise to avidtest’s comment. I held on to my BB7 mech disc brakes forever after hydraulics dominated. Just cause I had the tools/familiarity to service them.
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| Future of drivetrain? http://dirttreaders.com/phpBB3/viewtopic.php?f=2&t=17996 |
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| Author: | Kimba [ Wed Oct 16, 2019 7:07 pm ] |
| Post subject: | Future of drivetrain? |
https://www.youtube.com/watch?v=-9gQ1KRhesM |
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| Author: | 24v [ Thu Oct 17, 2019 5:41 am ] |
| Post subject: | Re: Future of drivetrain? |
Seems far too complicated to be reliable. |
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| Author: | 325racer [ Thu Oct 17, 2019 8:17 am ] |
| Post subject: | Re: Future of drivetrain? |
24v wrote: Seems far too complicated to be reliable. The same was probably said about the current derailleur systems. Think about coming from a single speed or dual cog where you manually move the wheel and chain to get a different gear. Imagine how "complicated" those seemed back then. What about an internal hub gear system, talk about complicated. This system actually seems fairly simple in comparison. I would worry about the bearings in wet conditions though. |
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| Author: | avidtest [ Thu Oct 17, 2019 6:23 pm ] |
| Post subject: | Re: Future of drivetrain? |
Pretty brilliant if it ends up working as hoped. Better for roadies in the beginning I'd think. Wouldn't dirt/grit be a concern when it comes to MTB though? Maybe a basic light weight (and sturdy) enclosure of some could be designed if so. If it pans out as a truly better system, I still can't ever see moving to it unless they offer a purely mechanical version. Just not a fan of battery/wireless and bikes. |
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| Author: | ajdonner [ Thu Oct 17, 2019 9:15 pm ] |
| Post subject: | Re: Future of drivetrain? |
Awesome to see people innovate. It's aesthetically really clean (in the internally routed cables or Di2 kind of way). I don't think complicated things are necessarily bad if executed well. We've all benefitted from more complicated things in our lives and don't give them a second thought because they work as they should (most of the time...). Couple critical thoughts: 1) the standard deraileur/chain set up is quite efficient. They've basically improved 'efficiency' from 97-98%, with an ideal standard setup, to 99% efficiency (1.5% friction to 1% friction). Whoop-dee-do. 2) The simplest thing they could've measured to show benefit would be weight difference which they claim they didn't do. Or they did and it wasn't in their favor; which I think is more likely. |
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| Author: | Canaan [ Fri Oct 18, 2019 8:34 pm ] |
| Post subject: | Re: Future of drivetrain? |
Interesting, but I'd be more enthusiastic if they had a prototype that actually shifted. |
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| Author: | 24v [ Mon Oct 21, 2019 5:32 pm ] |
| Post subject: | Re: Future of drivetrain? |
I get what you guys are saying about new and more complicated stuff. I was following right along until he started talking about the electronics of it. It uses a sensor to determine which shift ramp to choose, and has the servo/actuator thingy in the tube with the battery. Seems like a lot of stuff that has to go right while bouncing around, getting wet, dirty, greasy etc. I am not saying it wont work, just seems like a lot to ask for reliability. |
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| Author: | ajdonner [ Mon Oct 21, 2019 6:08 pm ] |
| Post subject: | Re: Future of drivetrain? |
Good points. Likewise to avidtest’s comment. I held on to my BB7 mech disc brakes forever after hydraulics dominated. Just cause I had the tools/familiarity to service them.
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