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I was reciting the list of other people's complaints. I think they are very appealing.
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Philip
Philip Williamson
www.biketinker.com
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- Sugino OX801D: $ 530 (includes BB).
- TA Pro 5 vis: $ 590
- Shimano Dura-Ace: $ 500+ (includes BB)
- Rene Herse: $ 385
Sure, you can make budget cranks for less, but you get what you pay
for. We priced the Rene Herse cranks attractively, so we can sell
significant numbers and thus ensure chainring availability.
The reasons for the proprietary bolt circle are simple: None of the
common bolt circles allow useful combinations like 48-32 and 46-30.
Basically, René Herse took the 1934 Stronglight cranks (now better
known from copies made by TA, Velo-Orange and others) and eliminated
the weak spots (fiddly, undersized bolts, need to remove cranks each
time you remove chainrings), while keeping the good parts. We took
Herse's design and updated it for the 21st century by using modern
materials, a slight slant of the arms to improve ankle clearance and a
few other tweaks to make it work with 10-speed.
More about the rationale behind these cranks can be found here:
http://janheine.wordpress.com/category/components/rene-herse-cranks/
Jan Heine
Compass Bicycles Ltd.
I would have liked to have seen them recreate the TA Zephyr cranks. I mean if you're going to the effort & expense of all new tooling, do it for something that is not near-proprietary and that a subset of the Retrogrouch multiverse is always clamoring for, myself included.
Just you wait till I'm King of the World!On Wed, Dec 14, 2011 at 8:53 PM, Ryan Ray <ryan...@gmail.com> wrote:
The Velo Orange "Grand Cru" 50.4 bcd cranks:Q-factor around 139mm
165mm, 170mm, 175mm lengths
easy to find vintage chain ring optionsChain rings from 50 down to 28 will fit550gunfortunate VO type all over them$200
Compass Herse Cranks:
Q-factor around 142mm
171 length
not easy to find vintage chain ring options if possible at allChain rings from 50 down to 24 will fit540gsmall, beautiful rene herse logo$385
I'm not saying the Rene Herse cranks aren't amazing and higher quality. I also think the RH cranks are the best looking cranks I've ever seen. If I had ridden PBP every year for the last 5 years on the same bike I'd be pre-ordering one of these cranks right now. As it is I'm still playing with just the right chain ring set up on my bike before choosing the VO/GC 50.4 cranks or the Alpina on sale at VO right now.- Ryan
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Cheers,
David
Redlands, CA
We have the new cranks made in Taiwan, because that is where the
knowledge to forge aluminum bicycle cranks resides today. TA has their
blanks forged in Taiwan, and I believe Campagnolo did the same until
they switched to carbon. We'd love to produce closer to home, but it
is hard enough to bring a new product to market without trying to
teach a manufacturer how to make something they never have made
before. There is a reason why all US-made cranks are CNC-machined and
not forged.
We are working with the best forge in Taiwan - our engineer visited
them all before we selected them - so the cost is no less than it
would cost in the U.S. Compass Bicycles is committed to sourcing
products from the best possible makers, as close as possible to home.
This means tires and fenders from Japan, lights from Germany, but
leather fender washers from the West Coast and some machined sub-
assemblies from Chicago.
Jan Heine
Compass Bicycles
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Works with a ten speed chains? Mmmm I wouldn't want to have to make
it work. 4mm width, must get tapered some for the teeth though.
Lets see, for $299.99 one could get a Campy alloy cross crank that was
built for ten speed systems, but has full pins and machined ramping to
aid shifting on the 46/36 rings. Made by a fairly good quality
manufacturer. But doesn't look 100 years old.
Quite light weight though - 540grams without the bolts. Wonder how
they did that? Must be the near net forging that produces a piece with
less materials. Less machining necessary. Interesting.
Maybe they'll test them.
Phil B
Most high-quality chainrings step down at the teeth to a thinner width
than the main body of the ring. Even in 1938, when the original Herse
cranks were introduced, 4- and 5-speed chains were not 4 mm thick on
the inside. (The exact measurement for 5-speed is 2.38 mm.) So the new
rings are the same as the originals from the 1970s (which used modern
chainring bolts instead of bolts and nuts), except that the teeth are
a little bit thinner, and shaped a little differently to optimize
shifting.
> Quite light weight though - 540grams without the bolts. Wonder how
> they did that?
By putting material where it is needed, and nowhere else. Compared to
the originals, we added a little material around the pedal eye (where
cranks tend to break) and went to a net-shape forging process to
ensure the strength in that area. (The originals were even lighter,
but we figured adding a few grams to increase the strength would be
prudent.) The downside of the net-shape forging process is that you
need a separate forging die for each length, but I would not be
comfortable riding such a lightweight crank where grain structure
around the pedal eye had been weakened by machining the crank to
length.
Jan Heine
Compass Bicycles Ltd.
I have, second hand, six years ago, from one source, heard of four
failures. The guy who mentioned the failures rode the ENO cranks and
thought 4 failures was a small number. If you called White Industries,
they'd probably tell you how many cranks they've produced and how many
they've warrantied.
Agreed on the Q and weight. Also agree on the Made In Petaluma appeal.
Philip
CNC machining seems to be what domestic machinists find cost effective
- Paul uses it as well, and I like to buy locally produced stuff. So I
might buy a set of WI if I had the cash and actually needed a new
crank. I wouldn't be particularly happy about the pinned and ramped
BLACK chainrings, but I'd rather bet my teeth on a WI than with an
unproven lightly produced forged crank.
Box Construction - does that describe the crank arm cross section
after material is removed from the inside?
Phil B
On Dec 15, 9:57 am, Philip Williamson <philip.william...@gmail.com>
wrote:
And would they be better in any way than the Rene Herse cranks?
I see the Sugino OX801D as functionally similar - low Q, low weight, 46/30 or similar chainrings.
http://www.flickr.com/photos/tksleeper/6517852851/in/set-72157628434893689
I don't claim to be knowledgable, but I really like the quality I saw in the WI's and have heard nothing but good things about wi. I don't think it makes them better but I do believe they are good enough and other than taste and money I haven't found anything "better".
Kelly
CNC product are as good or bad as the metal CNC'd. I am sure Paul and
WI use excellent stock. I was disapointed at first that WI did not
offer polished rings the VBC. After seeing the cranks in person I
changed my mind.
Given Compass' excellent product history, I would be willing to give
the new crank very serious consideration had I not already owned a
wonderful Stronglight modded to perfection by J P Weigle on my glamour
bike and two very excellent (and wonderfully versatile what with the
interchangeable spiders) TA Carminas on my tour and Citi bikes.
Just me, but I do not think either the WI or Compass cranks would look
good with those egg beater style cleat pedals. Vintage platform style
or maybe the early Campy cleat pedals that carried the shape over from
the Athena toe clip pedals.
> > Philip- Hide quoted text -
>
> - Show quoted text -
I see the Sugino OX801D as functionally similar - low Q, low weight, 46/30 or similar chainrings.Not at all. The main draw for the RH cranks for me is the ability to run 48/30, 48/28 but the Sugino OX801D can only go down to 34 like regular old 110 cranks.
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http://store.electrabike.com/eSource/ecom/eSource/items/items-2-S0-lV1crankchain-lV2.aspx?store=
On Dec 14, 4:51 pm, William <tapebu...@gmail.com> wrote:
> Let me see if I remember the full list of gripes about Compass' reissue of
> Rene Herse Cranks:
>
> 1. They only come in 171mm ?! Lame
> 2. They cost $385 ?! Lame
> 3. You can't get a big chainring ?! Lame
> 4. Proprietary rings ?! Lame
> 5. Three bolts ?! Lame
> 6. No ramps or pins or shift assist of any kind ?! Lame
> 7. Made in Taiwan ?! Lame
>
> Nevertheless, I'd still really love to have a few sets of them, and now
> they are accepting orders for them.
>
> http://www.compasscycle.com/Cranks.html
>
> If you bought them for me I'd run them on both of my go fast bikes in a
> 48/32. I'd run a 46/30 or maybe even a 44/28 on my brevet bikes. Maybe
> it's time to liquidate some more stuff....
44/28, yes, but not (yet, anyway?) 42/26 or 40/24 -- they're not
offering any big rings smaller than 44 teeth.
--MR