I would also put the original stops back. The bolt system is IMHO sub-optimal at best. I can send some photos and dimensions. Joe Coquina
From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Russ & Melody via CnC-List Sent: Thursday, January 24, 2019 8:56 AM To: cnc-list@cnc-list.com Cc: Russ & Melody Subject: [EXTERNAL] Re: Stus-List Touche' steering system disassembly - issues of concern discovered Hi Dennis, I will guess that the sprocket damage is as you surmise, chain stop bolt riding past the limit. Notice chain link gouge in port side housing too when it rode up on the sprocket. I expect it was an single event while backing down and the person lost control of the wheel. There is enough momentum there to put the wheel hard over in a second and cause the damage. Your intuition is "bang on", reassemble without removing the sprocket. Trying to get that sprocket off the axle is flirting with disaster. Reassemble exactly as before, as the damaged teeth are not in the normally loaded area anyhow. Cheers, Russ ex - Sweet 35 mk-1 At 12:50 PM 1/23/2019, you wrote: Well, I disassembled Touche's steering system yesterday for a loooong overdue maintenance session. As in it's never been done in 47 years! Touche's steering system is by Morch. If you haven't checked your steering system, maybe this will inspire you to do so. Concern 2. Some of the teeth on the chain sprocket were damaged. This was a complete surprise. * This was apparently caused by the way C&C/Morch made stops to limit the travel of the rudder. They put a bolt at each end of the chain. The bolts must have caused the damage when the wheel reached its limit. * Note the two bolts with washers and nuts through the links of the chain here: https://drive.google.com/open?id=1nvJzh8xWDgetBCEE8eeOAtz4-up4ZvCf Next steps.  * The sprocket. Hmmmm. The chain makes a full 180 degree wrap over the sprocket. I believe there are plenty of undamaged teeth that will work. On the other hand, I could try to get the sprocket off the shaft and have a machine shop make a new one. I think that would be a risky option. First, I'm not sure how I would remove the sprocket. It has set screws ( https://drive.google.com/open?id=12GbE75ERXZGgz_NalJ93RcXf6rKvL5fi ). I removed a small one on the sprocket and a larger one on a collar adjacent to it. I suspect there is a keyway on the sprocket. It showed no signs of moving. There are some inventive ways to try to pull the shaft but again, they all have risk. Then there's the issue of the bearings. If I muck up the bearings, I'm screwed.  * Give some thought to a better way to stop the wheel at the travel limits. Dennis C. Touche' 35-1 #83 Mandeville, LA
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