[CR]Suntour Vista VGT and working chainlenght

Example: Events:Cirque du Cyclisme:2004

From: "heddarr" <heddarr@indianaconnect.com>
To: "Classic Rendez-vous" <classicrendezvous@bikelist.org>
References: <20040201170657.81606.qmail@web40710.mail.yahoo.com> <002f01c3eb75$595a58a0$0d65f0d1@peace>
Date: Thu, 5 Feb 2004 13:15:14 -0500
Subject: [CR]Suntour Vista VGT and working chainlenght

Warmest Greetings

Is anyone familiar with this model of Suntour rear derailleur? It looks like a 70's VGT only has VISTA on the Body plate. It has "all alloy VGT" on the pulley arms.

Lastly, as usual I have chosen a chainlength that is too short to go big big. and too long for the small small.

If the adjustment screw for the body angle is set to take up most of the slack so I can use the small small combo it struggles onto the small rear cog when using the middle and large front chainring which are combos I want.

If I reset the body angle adjustment screw to allow the body forward and very close to the small cog the problem is solved for the mid chainring but still persists in the large chainring.

I am using a Sedis Sport Chain and Shimano twist tooth cogs.

When using a Shimano Road DeOre the with the same chain length the problem of dropping into the smallest cog goes away but there is chain noise from the bottom pulley wanting to not track the chain angle.

I am going to try a shorter bb axel to move the chainrings closer to the stays in and retry.

Presently the front is a 26x36x46 and the rear is 14,16,18,22,26,32 Is this past the useable range of the VISTA?

Howard Darr
Clymer PA