Re: Specialites TA Carmina
Peter Jon White
Ken Sacks wrote:
> I run a T.A. Zephyr with a 48-38-22 (!!) chainring and a 12-27 cassette,
> and no trouble shifting. Wait for Peter White to return from the bike
> show (he's driving cross country and wont't be back until the weekend)
> and ask him.
My BMW goes very fast. I got home Monday night. It took 60 hours to
drive from Las Vegas to Hillsborough with plenty of sleep. And I didn't
get arrested! Not even once!
The shifting performance is indistinguishable from Campy with the TA
rings on the Carmina crank. The TA rings are made of the same hard
aluminum alloy as Campy, and the teeth are all cut by CNC machines, not
stamped.
--
Peter Jon White
Peter White Cycles
24 Hall Rd.
Hillsborough, NH 03244
603 478 0900 Phone
603 478 0902 Phax
http://www.PeterWhiteCycles.com
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Thanks!
Russell Seaton
Mike Beganyi wrote:
>
> Hi All,
>
> I've got a new brevet bike built up and I'm debating cranks. This past
> year I switched from a triple (never really used it all) to a compact
> and haven't looked back.
>
> I'm debating a Specialites TA Carmina in the 94 diameter double. I like
> the idea of chain ring options - being able to run the standard 34-50
> compact as well as the potential for a 30-44 combination is very
> appealing for Green Mountain gap rides and New England brevets with lots
>
> of climbing, as well as some light touring.
>
> I'm running Campy Record 10sp Ergolevers and wondering how the shifting
> is on the Carmina's.
>
> Thanks,
> Mike
No experience with TA cranksets. I use a 94mm bcd Race Face Turbine LP
crankset as a micro compact crank on a bike. Outer and middle 94mm bcd
positions are the only ones used. Inner 58?mm bcd position is not used.
Its mounted on a 103mm JIS taper World Calss titanium bottom bracket.
Chainrings are usually 48-40 TA. Cassette is usually 12-23 10 speed
Campagnolo. Record Ergo shifters. Front derailleur is a Veloce double
35mm clamp on. For the Triple Bypass I used 48-30 chainrings. Front
shifting was not great with an 18 tooth spread. I had to twist and turn
the front derailleur and monkey with the limit screws to get it to work
sort of acceptably. Sometime soon I'll acquire one of the compact
specific front derailleurs to see if that helps shifting with the 48-30
rings. If I had a 35mm clamp on triple front derailleur laying around
I'd use it instead of buying the compact front derailleur. I do have 28
and 32 mm clamp on triple front derailleurs in the spare parts box.
Double front derailleur works perfectly with 48-40. This bike is
destined to be my 2007 brevet bike and I will likely use 48-36 rings on
it. Bought the 36 ring cheap from Cambria Bike Outfitters. Double
front derailleur will work just fine with the 12 tooth spread. On the
Triple Bypass ride I put on a 13-29 cassette in addition to the 48-30
rings to be sure I had low enough gears. 94mm bcd 5 arm chainrings are
fairly common so its easy to get a variety of ring sizes.
I have a triple on this year's brevet bike. Used it on one climb out of
the Mississippi River valley on the 400k. Never used it on the 200,
300, 600, or 1200. Never lost any sleep having an unused inner
chainring. Never considered spending money to replace it on that bike.
I bought the micro compact crankset for a new bike build because it was
something different. I already have bikes with a double and triple.
Ken Sacks
Michael Beganyi
Thanks all.
A little late, as I've had the crank mounted and have been riding it!
I went with the Carmina 94 Double. A beautiful crank, and the local mech
who watched over me as I put it all together was impressed.
I'm running a Campy Compact FD with 10 speed.
I put this all on a Phil Wood BB.
I currently am running the 50 / 34 combo, but have purchased 48 / 32 set
for climby brevets / fast tours in the NE, and after pulling my trailer
around a bit I'll probably be investing in a 46 / 30 combo.
No complaints other than 1 instance of chain suck (it was ugly) at an
event I was pacing another rider through. First major climb and I sucked
the chain around the BB! Luckily I had access to the quick link on the
Campy chain and was able to sort it out, with no damage to the frame or
the chainrings.
I did notice that the rings have 9sp embossed on them, despite my
request that my LBS verify they were 10sp compatible. They appear to be
working fine with my 10 sp system - but I do worry about premature wear
and tear... should I?
Pics of the bike, rigged for some sloppy fall riding, can be found here:
http://picasaweb.google.com/mike.beganyi/IndependentFabricationsTiClubRacer
-Mike
Mike Beganyi
:: ::
Design & Consulting
802-536-0106 :: office
802-310-3546 :: mobile
www.mikebeganyi.com <http://www.mikebeganyi.com>
Peter Jon White wrote: