Re: [CR] 13 Tooth SunTour Perfect FW Cog

(Example: Framebuilding:Technology)

Date: Thu, 7 Jan 2010 23:16:29 -0600
To: Kevin Kruger <ktk1_7_0_2_8@yahoo.com>, <classicrendezvous@bikelist.org>
From: "Mark Stonich" <mark@bikesmithdesign.com>
In-Reply-To: <819772.31285.qm@web31403.mail.mud.yahoo.com>
References: <819772.31285.qm@web31403.mail.mud.yahoo.com>
Subject: Re: [CR] 13 Tooth SunTour Perfect FW Cog


At 1/7/2010 06:08 PM -0800, Kevin Kruger wrote:
>Just to clarify, the Perfect freewheel that I have is a six-speed
>standard spaced model, that appears to have the 13T cog threaded
>into the second smallest cog, like the Winner design.

Now that changes everything.

Too bad they didn't do this make Ultra spaced 7 speeds on Ultra 6 bodies. Would have made for better touring FWs than the New Winners with only two splined positions and a largest threaded cog of 21t
>But it is clearly a PERFECT stamped model body, so a blanket
>statement about them cannot be made.

I was careful not to state that you didn't have a FW with a 13t and a standard Perfect body, just that one couldn't screw onto the standard 44mm threads.
> That's the point I guess I was trying to make.
>
>And no, I am not going to dismantle this freewheel to prove it.

If I ever get my hands on one it's coming apart, so I can get a look at that 2nd cog.

Which cog has the male threads? (ie, does the 13 screw into #2, or onto, like a New Winner.)
> Trust me, my eyes are seeing correctly.

No doubt.


>Regards,
>Kevin Kruger - Grantville, PA
>
>=======================================================================================================================================================================================
>
>It would be just barely possible to make a 13t cog that could screw
>onto the 44mm threads of a non-PC-6500 Perfect or Procompe FW, But
>you wouldn't be able to use a chain on it.
>
> I just wrapped a chain around a 13t cog and there is only about 2-3
>thousandths clearance when placed on the threads of a Pro Compe
>body. You need to have some sort of flange or spacer and the chain
>would never clear that.
>
>BTW If someone does need a 13t 5 speed New Winner cog, I have one
>with very little use.
>
>At 1/7/2010 07:32 AM -0800, Kevin Kruger wrote:
> >Dave and other interested listmembers. It was stated on the list
> >that a 13 tooth cog was not available for the "Pro Compe" or "8.8.8"
> >bodies. Well I have a SunTour "Perfect" freewheel, which I think is
> >the same as the "Pro Compe or 8.8.8." body, and it has a 13 tooth small cog.
> >
> >I'm not a SunTour freewheel body expert, so you may want to query
> >the list for a confirmation in the ProCompe/Perfect
> >compatibility. If the bodies are the same, then you may have some
> >luck finding a 13 tooth cog, as previously stated, I have one on a
> >"Perfect" bodied freewheel.
> >
> >Best of luck with your search!
>
>Mark Stonich;
> BikeSmith Design & Fabrication
> 5349 Elliot Ave S. Minneapolis, Minnesota 55417 USA
> Ph. (612) 824-2372 http://bikesmithdesign.com
> http://mnhpva.org
>
>
>
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Mark Stonich;
     BikeSmith Design & Fabrication
       5349 Elliot Ave S. Minneapolis, Minnesota 55417 USA
            Ph. (612) 824-2372 http://bikesmithdesign.com
                        http://mnhpva.org