Bishop Cam Steering Box Worm/cams.

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Robert Grunau
Posts: 100
Joined: Mon Oct 08, 2001 6:18 am

Bishop Cam Steering Box Worm/cams.

Post by Robert Grunau » Thu Jun 27, 2002 10:03 am

I have had a small batch of MG TB/TC Bishop Cam steering box worms/cams and matching pegs manufactured. The ratio is standard TC, 11/1. The worms/cams will also suit a TA/PB but slightly slower ( and lighter? ) steering as the TA/PB ratio is 8/1. Worms have been carburized hardened to a depth of 0.040 to 0.050" deep. Worms were quenched and tempered resulting in a case hardness of 63 RC. The inner splines were masked off and are approximately 42 RC. The pegs were carburized to a depth of 0.025" to 0.035" , quenched and tempered resulting in a case hardness of 56 RC. These hardness number match the upper limits of hardness for original worms. Original worms had a very large variation in hardness and I have aimed for hardness numbers at the upper range of the originals. The pegs were made slightly softer than the worms as they are readily replaced if necessary. I have the chemical properties of the base materials if interested. I am offering these worms and pegs at a combined price of $225.00 US$ a set plus postage. I will have a sample worm/peg at the Wolfeville Nova Scotia GOF next week. If interested or need additional information please email. Thanks, Bob Grunau And Bob. I would be interested in a worm with the lower ratio (for a PB). And needless to say, a matching peg. Regards, Lew Palmer Tom, I am investigating having some new Bishop Cam steering box worms manufactured. Any interst out there for either the 8 to 1 TA ratio or 11 to1 TC ratio? Bob Grunau --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.365 / Virus Database: 202 - Release Date: 5/24/02

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