Avinox Reveals its Motor Gearbox
- Thread starter Rob Rides EMTB
- Start date
sethimus
😠 Temu Gary 😠
never saw those in the field. probably a reason for it
slickrock
Well-known member
Does your bike have a snubber? Is there a spring tensioner employed (usually not for hardtail city bikes)? Fixed tensioner? Are there horizontal dropouts sliding rear axle to place increased tension on the belt?
VPP and DW4 style designs, you will probably never see a belt drive for this reason, unless they design a very elevated chainstay.
Vision_Tim
Member
Maybe we need single-sided swingarms for this, or the previous model Ibis Oso design that everyone hated.
slickrock
Well-known member
Agreed. Maybe this is where something like a VEER Split Belt Pro could come in handy. Basically make a version of with multiple pivots to put in a pack and used temporarily to finish the ride. Either that or assume that Gates belt you stuff in your pack is there to just get you home, and it swap out with a unfettered one.
sethimus
😠 Temu Gary 😠
or use a chain and just carry a spare multilink and be done with it
slickrock
Well-known member
Yep. You can always do the simple, expedient, and reliable thing, that has worked for over a century. Of course, the requisite chain tensioners required look an awful lot like derailleurs; the very aesthetic you not want to not be reminded of with your new ECVT bike.
But why bother when you can take the plunge and proudly show off your belt drive on your MGU/ECVT bike because no derailleur bike can, creating caste like the Star-Belly Sneeches. Just a glimpse of a belt on your EMTB means you are in an elevated class
Maybe you missed the already displayed chain mgu Avinox photo one page before this one…Yep. You can always do the simple, expedient, and reliable thing, that has worked for over a century. Of course, the requisite chain tensioners required look an awful lot like derailleurs; the very aesthetic you not want to not be reminded of with your new ECVT bike.
View attachment 188252
But why bother when you can take the plunge and proudly show off your belt drive on your MGU/ECVT bike because no derailleur bike can, creating caste like the Star-Belly Sneeches. Just a glimpse of a belt on your EMTB means you are in an elevated class
slickrock
Well-known member
I'm well aware and in the end chains will probably be the more prevalent choice for MGU EMTBs. The operative word here is choice, because with derailleur bikes you don't have one. They don't get to put "Stars Upon Thars"
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sethimus
😠 Temu Gary 😠
are you dumb? both need a tensioner…Yep. You can always do the simple, expedient, and reliable thing, that has worked for over a century. Of course, the requisite chain tensioners required look an awful lot like derailleurs; the very aesthetic you not want to not be reminded of with your new ECVT bike.
View attachment 188252
But why bother when you can take the plunge and proudly show off your belt drive on your MGU/ECVT bike because no derailleur bike can, creating caste like the Star-Belly Sneeches. Just a glimpse of a belt on your EMTB means you are in an elevated class
I have Pinion MGU with chain.
My friend has Pinion MGU with belt.
Both are full suspension with tensioner. Belt feels a tiny bit spongier, but there is no real difference. We note no difference in efficiency. Belt is lower maintenance, but a big ass chain that doesn't need to flex sideways has also a lot of durability.
(Side note: I think the resale value of my bike just dropped 2k. Thank you avinox!)
My friend has Pinion MGU with belt.
Both are full suspension with tensioner. Belt feels a tiny bit spongier, but there is no real difference. We note no difference in efficiency. Belt is lower maintenance, but a big ass chain that doesn't need to flex sideways has also a lot of durability.
(Side note: I think the resale value of my bike just dropped 2k. Thank you avinox!)
Eduardoramundo
E*POWAH Master
Specialized do not normally show anything off until it is ready to purchase and with the dealers.
I would take this with a big pinch of salt
Just realised I posted this in the wrong thread!
Full suspension "adventure" type bike with spring tensioner pushing belt up just below the chainring. Same design as Pinion MGU. Initially I had the Bosch dynamic setting set to +5 in turbo (power agressively coming on), and I think the belt cog jump may have been from standstill. I've since reduced the dynamic setting. Maybe the spring is a bit soft.
slickrock
Well-known member
But only one of them looks cool as this:
Not like some sh1tty derailleur like this:
or this:
Are you just purposely ignoring the great looking one that is already on Proto bike that you said you saw?
slickrock
Well-known member
True, I'm cherry picking and messing with the troll, but let's see how this prototype actually looks when it gets into production. Belts can get away with one tensioner idler and a snubber, but chains usually require two pulleys to take up enough slack. Looking at that prototype, that pulley doesn't seem to be taking up enough of it, especially with VPP/DW4 ish designs, there is quite a bit of chain growth.
sethimus
😠 Temu Gary 😠
why would a chain need 2 pulleys on the same bike and onley one when using a belt? did you go to clapping when everyone else went to physics education?
slickrock
Well-known member
Not too many of dem two-pulley belt tensioners are there.
sethimus
😠 Temu Gary 😠
that doesn’t explain the why on the SAME rear design. try again
But why bother when you can take the plunge and proudly show off your belt drive on your MGU/ECVT bike because no derailleur bike can, creating caste like the Star-Belly Sneeches. Just a glimpse of a belt on your EMTB means you are in an elevated class
I’d never heard the phrase ‘Star-Belly Sneeches’, so did a search.
Might be why you used the phrase in the first place, but there’s a lesson in that tale somewhere for us consumers of electric mountain bikes!
slickrock
Well-known member
Yet them 2-pulley chain tensioners just keep showing up - like a small underdeveloped derailleur.
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WARNING: Wearing unbranded non Fox or generic clothing may result in: experiencing genuine thoughts, saving money, forgetting to look wealthy on social media, and an accidental development of actual character. Use at your own risk.I’d never heard the phrase ‘Star-Belly Sneeches’, so did a search.
Might be why you used the phrase in the first place, but there’s a lesson in that tale somewhere for us consumers of electric mountain bikes!
The “War” is already on
Look at Gobao
sethimus
😠 Temu Gary 😠
i‘d say most probably because of different designs in mounting the motors to the frame and not having something to bolt a tensioner to as shown with the forbidden or the megamo prototype? now take forbidden‘s design of a high pivot with chain, i would bet that thing has less total resistance in the chain than my current velduro with a derailleur.
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