[tincan]

What is the difference between RS-7 and RS-8 crankarms, other than the weight?

 

[flafonta]

weight

Seriously, I think the warranty. I think the RS-7 has a lifetime warranty, no question asked, while the RS-8 is more limited.

 

[quax]

The RS-8 is more likely to break after a 6 ft drop.

 

[Roadsters]

Recently in another thread someone mentioned that later this month, Middleburn will release its new external bottom bracket crank. Chain Reaction Cycles may be the first place we'll see it.

 

[PepperJester]

this month eh? Sounds worth waiting then. I'm looking for some new cranks for my DH bike and x-type middleburn's would be dope.

 

[kiatkiat]

I just went to middleburn website, there is a "road coming soon" under cranks section.
Is this the one?

 

[dougal.s]

Middleburn's extrenal BB cranks have been coming out this month for three years now. Interbike 2009 was supposedly a very likely debut for them, but the didn't appear.

The road section has been on their site for several years also.

Let's put it this way: They made a front hub, then delayed the matching rear hub by over two years.

 

[quax]

well, it was already presented at last year's Eurobike:

 

[dougal.s]

I meant Eurobike, not Interbike.

Nice find, none of the major websites had this, and the journalists I asked said they hadn't seen it.

Looks like an early prototype, possibly without the axle being fixed to either crank (coupling visible on non-drive side, yet self-extracting crank bolt on drive side?).

 

[quax]

(don't know anything specific about it)

 

[dougal.s]

That angle makes me more suspicous it's just a rough-finished ISIS crankset, you can clearly see the coupling on both sides.

The only reason I can imagine for having a coupling at both sides would be to facilitate the changing of axles to facilitate the usage of the minimum Q-factor for a given BB size or multi-ring setup.

 

[doco]

FWIW I contacted Middleburn at the beginning of January, and they said external bb crank will be released sometime "mid February"

they said to keep checking website for updates

 

[Smart Sam]

Awesome news, can't wait

 

[pbbullpup]

I would get excited about the external BB crank but I've been trying for days to purchse the RS7 and it does not seem possible.

 

[quax]

A friend of mine wanted to get some R7, too. He was told that Middleburn is totally sold out.

 

[Smart Sam]

From Middleburn themselves:

" To Rob all going well they will be available in the next 10 days time CRC should have them very soon after that date. From Matthew. "

 

[parkrider]

From Middleburn themselves:

" To Rob all going well they will be available in the next 10 days time CRC should have them very soon after that date. From Matthew. "

awesome! can't wait for the weight on these, hopefully a decent alternative to carbon and hopefully not a million miles off on weight either.

 

[sausagedog]

sorry to hijack but i emailed middleburn about a spider for a xtr-dh chainring and they said we dont do one we only do them for normal xtr bcd sizes, i asked if they could get a price for a one off as it would only be a case of changing the cnc sizes, reply was oh we only do 104bcd but hay thats no good.... to get customers the company need good customer service,and even if they said no we cant do one but heres a place that can, that would have been a good start. now i just cant be bothered in dealing with them even for a chainring or anything. sorry rant over.

 

[DavidR1]

sorry to hijack but i emailed middleburn about a spider for a xtr-dh chainring and they said we dont do one we only do them for normal xtr bcd sizes, i asked if they could get a price for a one off as it would only be a case of changing the cnc sizes, reply was oh we only do 104bcd but hay thats no good.... to get customers the company need good customer service,and even if they said no we cant do one but heres a place that can, that would have been a good start. now i just cant be bothered in dealing with them even for a chainring or anything. sorry rant over.

I don't think the problem they are having is coming up with customers. They can't keep up with the demand for the products that they do offer, so there is really no way for them to justify doing a one off spider for you.
Try emailing Shimano to make you a one off spider:skep: It just doesn't make any sense.

 

[sausagedog]

they should put notice up on the website saying soory for the delay, its the fact that i emailed a company that couldnt be arsed with joe public,if i was someone big in mt biking iam sure they would jump at me, i asked if they could do one. ok they cant but come on sure someone they know can.... lets take hope for a moment i asked about doing my calipers red,what was the reply no but they helped me and told me about a guy that does orange bikes anodizing.thats hows a company should be iam in retail and if i was like them i wouldnt have many customers its going that extra mile.years ago in bike industry everyone helped anyone now thats all gone, its all about £££££