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Macmahone Hubs


streetjibs

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to have that many engagement points in a conventional ratchet and pawl hub the mechanism would have to be really small ar have the pawls offset so it only engages on 1 or 2 pawls at a time, hence not making it ideal for trials...but having never seen one/never taken one apart i can't really comment!

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i was looking at these as an alternative to hope or king for my dh bike. at the moment no one in the uk sells them, but they do look really really good quality. as for durability a complete unknown.

i love the way their superlight ti headset is 30grams heavier than the normal one :P

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I personally wouldn't go near that hub with a barge pole. To have that many engagements in that amount of space with a ratchet and pawl would just be bad news. Even if they are good quality, theres a reason even the hope "trials" hub only has 48 clicks or whatever.

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to have that many engagement points in a conventional ratchet and pawl hub the mechanism would have to be really small ar have the pawls offset so it only engages on 1 or 2 pawls at a time, hence not making it ideal for trials...but having never seen one/never taken one apart i can't really comment!

You may not have taken one apart, but like you said, if it's a conventional ratchet, that's gonna be some sketchy shit. W.I. freewheels have pretty shallow ratchets, and that's with 'only' 72 clicks with a 3 x 3 engagement system, so for there to be another 48 clicks to it, they'd have to either make the ratchet smaller and have more pits in it, or have fewer pawls engaging at once, and on a shallow ratchet that's a baaaaaaaaad idea. The smallest machining error and you're f**ked. On one of the early, early 96-click Tensile freewheels I tested, the pawls were slightly made wrong so they weren't perfectly square, and they skipped loads 'cos the pawls simply couldn't dig into the ratchet enough. Again, if they've got more clicks that those with this setup, it's gonna be uber dodge.

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Have a look at Industry 9 for more hubs, also with 120 clicks: http://www.industrynine.net/official/singlespeed.html

George Ryan, one of the Cannondale slopestyle riders uses them and they do rate them for DH... Never heard of anyone trying them for trials though.

The reason you can get away with 72 clicks in a ENO freewheel is because the freewheel ratchet can be fitted in a bigger diameter than is available in a rear hub.

Also many years back I read about a hub called the Hen's Teeth hub or something like that, again claiming 120 clicks, but built on similar lines to the Chris King toothed washer setup as far as I can gather.

Anyone know of any roller clutch hubs still doing the rounds or if any of them exist that don't explode when used for trials :P? No clicks at all, but potentially with pickup quicker than the 3 degrees 120 click hubs have...

Edited by psycholist
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A guy in Weston rides a silent clutch jobby - he loves it, reckons it's solid, instant etc

I got on the bike, it was slow, sluggish, not instant, didn't feel like a very strong engagement...

I wouldn't run one, and feel that the 48 click Pro II I'm currently sporting does a rather grand job of things. 120EP would be nuts if you could match the strength/reliability though :)

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king120black1.jpg

Looks nice! would like to find out that its not good though! any price??

It looks quite nice to be honest. I would imagine it wouldnt match a CK or a pro 2 for reliabillity or strength though?

Wonder if its better than a deng freehub? :lol:

Matty.

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found some more info... but seems like no1s tried em for trials and im not going to be the first! lol

they do a std hub (36 clicks i imagine?) 170gms!!

then they do a similar hub but oversized with big axle 380gms

and the king 120.

possibly the std hub would be an option for trials too....

anyways if someone does try one, id love to hear how it held up to trials use/abuse.

cheers

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Interesting product. nice design, lightweight, and superior pick up to a Chris King. as there is no info on the internals, im just wondering about the name "KING" on the hub body. is that some sort of clue to indicate that this Macmahone hub has modified chris king mechanical internals without direct violation of the chris king copyright/patent. i guess we will never really know at this time until some top rider is testing this hub in anger or someone buys it and pulls it apart. guess we will have to watch this space...

Edited by Rusevelt
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That's my impression of the shimano silent clutch hub I tried ages ago in a bike shop...

If you're looking at trying random hubs for trials you mightn't do badly with Shimano XTR. That's what I ran for the past 7ish years (One hub lasted 5 before it started to feel a bit iffy on engagement, the second was sold with my last bike, tightened the freehub bolt once and adjusted bearing tension once on both hubs and that's about it for servicing). The XT's I'd used before them lasted under a year before the freehub would seize/explode, and I ride a lot harder now. Older XTR's have 16 point engagement though. The new XTRs (2007 onwards) have 36 engagements and feel fecking fantastic on my XC bike... ENO freewheel on my current trials bike though, so no new XTR tried...

The rivets holding the disk to the spider in centrelock disks can't take two way loading without getting loose though, so if you're planning to run a back disk XTR is definitely out unless you like the wheel rattling a few degrees with the brake on.

Edited by psycholist
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I won't be trying one (I like Hope) but I prefer them to the Industry Nine ones even though I haven't ridden either simply for the fact you can use standard spokes - although I don't often snap spokes I think that the hub looks more vunerable on the Industry Nine.

As for the 120 engagements, what about two off set ratchet rings with two sets of two or three off set pawls.

Jamie

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A guy in Weston rides a silent clutch jobby - he loves it, reckons it's solid, instant etc

I got on the bike, it was slow, sluggish, not instant, didn't feel like a very strong engagement...

I wouldn't run one, and feel that the 48 click Pro II I'm currently sporting does a rather grand job of things. 120EP would be nuts if you could match the strength/reliability though :)

I rode two shitmano's silent clutches - indeed it is only instant in theory and spongy as hell. I calculated the actual eps by measuring the angle crank has to go before it engages and dividing 360 degrees by the result. It was something around acs eps (36).

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Industry nine also make standard flanged hubs, so you can build them up with whatever spokes and rim you like.

To be honest I'm surprised I didn't hear from a pile of people who'd exploded their silent clutch freehubs, given the operating principle for this type of hub, there's a lot of force trying to burst the freehub body when you pedal kick. That'd be why Chris King style hubs are inherently better for carrying pedalling loads though they are a bit too sensitive to contamination for my liking. My ENO has been awesome so far :).

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I won't be trying one (I like Hope) but I prefer them to the Industry Nine ones even though I haven't ridden either simply for the fact you can use standard spokes - although I don't often snap spokes I think that the hub looks more vunerable on the Industry Nine.

As for the 120 engagements, what about two off set ratchet rings with two sets of two or three off set pawls.

Jamie

I did think of that, but I thought they'd probably be a bit more vocal about it if they'd done something that cool. It'd be a total b*****d pulling the mechanism in/out of the hub.

RB Tractor hubs used to blow up a lot, IIRC?

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