Re: [CR]Tevano Pista Cranks- Chainline Question

(Example: Racing)

Date: Thu, 3 Jan 2008 18:06:56 -0800 (PST)
From: "Fred Rednor" <fred_rednor@yahoo.com>
Subject: Re: [CR]Tevano Pista Cranks- Chainline Question
To: Sean Flores <seaneee175@gmail.com>, classicrendezvous@bikelist.org
In-Reply-To: <F774E429-0DC8-4AB9-92AC-0ECDE3262ADB@gmail.com>


> I just picked up a set of Tevano Pista cranks and > I'm trying to find out the correct axle length for > a proper chainline. > > A while back someone posted an old TA catalog, but > I can't seem to find it. > > Just curious what I need to find in the way of a BB. > Since it's a campy knockoff, would it take the standard > 109mm campy pista spindle, or the TA standard of 112mm? > > Additional info: Rear spacing= 120mm, BB shell is 68mm. Sean, Is the Tevano really a "clone" of the Campagnolo crankset? I'm asking because TA specified the same bottom bracket spindles for the Tevano cranks as they did for their other cranks. And the spindle specified for track use was the #314, which is 111.5mm long - but asymetrical, whereas the Campagnolo Pista spindle is symetrical. It is possible that a Campagnolo Pista BB will work; but this will depend on whether your frame's drive-side chain stay is suitably indented, and also on the size of your chain ring. This might lead to the rare situation of having too narrow a chainline at the crank. You'd have to measure... So the T.A. model 314 spindle might still be your best choice. Here are some other alternatives: 1) T.A. #344 spindle, flipped over. This would then be the same as a #314 on the drive side, but the left side arm would now be spaced a few extra millimeters to the left. 2) Campagnolo 112.5mm spindle - i.e. what you use on Record and earlier Nuovo Record cranks. 3) Any Campagnolo 111mm _symetrical_ BB, including modern Centaur and AC-H; but this has the same considerations as the Campagnolo Pista BB. 4) Modern Campagnolo 115mm _symetrical_ cartridge BB. I.e. the Centaur or AC-H pieces for modern Triple cranks. This should provide essentially the same chain line as #2, above, but the left side arm will be moved to the left a couple of extra millimeters. 5) Modern Miche Primato Track BB. The 110mm model will have the same considerations as #3. The 115mm model will have the same considerations as #4. Note that the cups on these allow you to play with the chainline and clearance a bit on the drive side. But if you use the 110mm version, and slide it to the right, you can reach a point where the left side arm rubs the chain stay. I hope this helps, Fred Rednor - Arlignton, Virginia (USA)

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