Re: [CR]Gran Turismo rear der. mounted to Campy 1010a dropout?

(Example: Production Builders:Tonard)

Date: Sun, 30 Dec 2007 23:50:31 -0600
From: "John Thompson" <john@os2.dhs.org>
To: FujiFish1@aol.com
Subject: Re: [CR]Gran Turismo rear der. mounted to Campy 1010a dropout?
References: <cd6.215d8875.34a96939@aol.com>
In-Reply-To:
cc: classicrendezvous@bikelist.org

FujiFish1@aol.com wrote:
> Steven Willis also mentioned that. I was hoping that the one here was
> sleeved too, but alas, it is just a simple back nut, six-sided and flat
> on front and back. In addition ... MAN! ... I'm a fair bike mechanic,
> but that pivot bolt just didn't want to thread out of the black adaptor
> ... it felt like it was tightening the internal spring while trying to
> loosen. The threads are clearly standard right.
>
> After fighting to less than an eighth of a turn, I paused and
> thought. Is there any reason not to simply mount the unit &
> adaptor, rearward of the integral hanger, and pretend the latter isn't
> there? Seems to me it will lengthen the chainline, and I think I can
> afford the weight penalty. :)
>
> Here are a few shots of this tried on, although the back nut is not yet
> replaced for actual use:
> http://picasaweb.google.com/Torp84SL/Other
>
> So whadd'ya guys think ... will this work ok? I realize it gives me
> just a bit more funk edge on Harvey, but let's be realistic ... can
> anybody really, ever, out-funk the original FunkMeister Harvey? Really
> now? :)

The way you have it mounted now puts the pivot significantly behind where it was intended to be, but the GT is not that great a shifter that you're likely to notice much degradation in performance.

I think Mark Stonich said he had a couple of the sleeved nuts you could try; I'd suggest doing that instead.

--
John Thompson (john@os2.dhs.org)
Appleton WI USA