- Shimano Alfine or SRAM i-Motion?
I’ve not put enough mileage on to be able to comment on durability, but with a 32/20 setup it’s about the same spread of gears as the middle ring with 12-32 I think.
No problems setting up, centre-lock mount so I’m using an A2Z converter with a old-style 165 Mini disk.Posted 9 years ago
I Got a Genesis iO iD just before Christmas.
I’m running it as stock from the shop and it’s great! I mainly ride on the Malverns, which has a lot of Up and Down and I was worried about managing some of the steeper climbs with the range on offer.
I can report that I have tackled even the steepest bits without any problem. Infact, if they can ensure that the hub becomes suitable for more than ‘light xc use’ then I can seen no reason to remain with deraileur systems on mountain bikes in the future.
BenPosted 9 years agothisisnotaspoonMember
gearing would cross over, but no more than normal, only the last 3-4 gears are “new” each time you shift the front ring. But with a straight chainline there’s no reason (assuming the hubs can take the torque?) that you can’t ride in the theoretical 22 on the hammershmit and be in top gear at the hub. Giving a propper low range set of gears for climbing and normal gears for elswhere.Posted 9 years agochunkypaulMember
finished mine on new years eve but only done 80km on it so far, but set up was easy, running 32/20 on a ti29er, the bike is light and only notice the weight when handling the rear wheel alone
pros – quite cheap really, smooth changing, no rear mech to destroy at MM/SITS
cons noticed so far include – shifter doesn’t sit in my preferred location (too far inboard), feels a bit dragging in the low gears, cable still stretching resulting in gear changing from 2 to 1 a bit effyPosted 9 years agoforge197Member
I run an Alfine these are my thoughts so far
PROS – runs through all weather with consistent gear changes, easy to set up, stealthy (runs very quiet), awesome on days rides, cruising around on bridleways, forest trails and the odd singletrack. The bolted rear makes the back stiff.
CONS – heavy rear wheel is noticeable, changing gear underload isn’t great which in turn lends it not to be that great for undulating singletrack where quick gear changes are needed.
I like it but on the right type of ride which is all day riding as mentioned above, very muddy or nasty weather conditions.Posted 9 years ago
Yeah, agree with the shifter comments – it doesn’t interface well even with Shimano brakes.
Hadn’t noticed the draggy feeling – I can’t see how you’d feel it on a mountain bike (but then the iO is the first hardtail I’ve ridden for a while, so it all feels very direct)
TINAS comments about weight: don’t forget the 2 chainrings and front deraileur/shifter as well – I know that doesn’t total 1.6kg but it does bring the comparison closer.
As noted, it won’t change under load too well although a tiny pause in peddling (like a ‘hiccup’)is enough to shift, however I always back off the power on a deraileur system when changing, so for me there’s not a huge difference in the systems. I do love the fact that I can select a gear whilst stationary or freewheeling and it picks up immediately the cranks are turned.
BenPosted 9 years ago
Thanks for all the input peeps.
The Alfine is sounding quite attractive, certainly no one is condeming it aka IMs comment on the Sturmey Archer :¬)
I can live with a little extra weight – makes your legs ‘ard! And being a singlespeeder most of the time love the idea of a neat and clean configuration with all the benefits of a SS with regard cleaning and manitenance.
It doesn’t sound as if any of you have found it lacking in terms of ratio range..? Can you get up the steeps OK without busintg your knee caps?
I’ll probably want to run one with a Hope disk brake set-up. Any comment on that?
And, seems like no one has yet tried the SRAM hub?
MoldsPosted 9 years agoStonerSubscriber
you can get them from singlespeedcentralPosted 9 years ago
I have an alfined inbred, I really rate it! I certainly don’t notice the extra weight on the rear wheel, I guess if I concentrated I might be able to but in the real world of riding I just don’t 🙂
I run a 32 up the front and I find it to be the equivelant of a middle ring and 9 speed cassette. Fine for general riding, though I do sometimes wish for a faster top-end gear (is that the right term?) for when you want to go a bit quicker than 25-27km/hr… I might see if I can track down a 36 front ring (does such a thing exist?)
All in all, I like my Alfine… 🙂Posted 9 years agoStonerSubscriber
According to Sheldon
The Hub has a range from 1:1615 to 1:0.527 chich in nominal 26" gear inches is 22" to 67" with a 32:20 chainwheel/sprocket ratio
A stock 11-32 cassette with 44/22 at the front is more like 18" to 104". However if you ignore the big ring, then its 18" to 76".Posted 9 years agolardmanMember
running my Alfine on a Mountain cycle rumble, with slidey drop-outs. It works a treat so far, (not much mileage to date tho’) some strange jumps between gears sometimes, rather like inconsistent spacing between ratios. I’m sure i’ll not notice in a few weeks tho’.
Shimano deore disc (splined) seems to work fine with hub.
quiet, and solid feeling chain, which is a bonus.
All in all….. fab so far.Posted 9 years agoWipeOutMember
I’ve just ridden my Alfine hub the once, and it was favourable. I had a bit of problem with getting the lowest gears, but I think this is a cable issue.
Any suggestion or setup tips welcome.
Otherwise very good. Good spread of gears. I did notice the extra weight at the back, but I’m splitting hairs. I got utterly fed up with chain suck, worn chain rings, cassettes, mud fouling the gears and broken or bent deralliers. This is the way forward.Posted 9 years ago
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