John OoSTerhuis
Life Is Good!
<cross-poSTing here>
A few years ago we learned that all ST1100 steering stem shafts' OD were not the same dimension. At that time the holder of the STOC ST1100/ST1300 Steering Stem Races/Bearings R&R Tool Kit bored out the ID of the race/bearing driver pipe so it would work on all ST1100 stems. The kit:
http://www.st-riders.net/index.php?topic=714.0
Fast forward to today. The pipe in question finally broke, having been pounded upon one too many times. The kit user kindly replaced the pipe and shipped on the kit to the next loanee who, you guessed it, had an ST with the larger diameter steering stem. He managed a workaround and put his ST back together, alerted me to the problem and sent the pipe to me to be modified. Unfortunately he didn't measure the diameter of his stem before reassembling. The STrider that replaced the old damaged pipe threw it away so its ID can't be measured. I now have the new diver pipe in hand and a local STrider who has volunteered to 'bore out' the pipe for us. How much is now the big question. So...
What are the ODs of the ST1100 steering stem's shafts? [the middle section of the stem, between the threaded top and the bottom boss the race or bearing seats on]
At the time we found out there were different ODs, IINM the STs with the larger diameter stem shafts were thought to be the later model ABS ones. I know the unmodified original pipe worked fine on my '91 non-ABS. However, the stem the driver pipe won't fit over is a 2001 non-ABS.
Can anyone help with info on this? Would be much appreciated. TIA
Regards, John
A few years ago we learned that all ST1100 steering stem shafts' OD were not the same dimension. At that time the holder of the STOC ST1100/ST1300 Steering Stem Races/Bearings R&R Tool Kit bored out the ID of the race/bearing driver pipe so it would work on all ST1100 stems. The kit:
http://www.st-riders.net/index.php?topic=714.0
Fast forward to today. The pipe in question finally broke, having been pounded upon one too many times. The kit user kindly replaced the pipe and shipped on the kit to the next loanee who, you guessed it, had an ST with the larger diameter steering stem. He managed a workaround and put his ST back together, alerted me to the problem and sent the pipe to me to be modified. Unfortunately he didn't measure the diameter of his stem before reassembling. The STrider that replaced the old damaged pipe threw it away so its ID can't be measured. I now have the new diver pipe in hand and a local STrider who has volunteered to 'bore out' the pipe for us. How much is now the big question. So...
What are the ODs of the ST1100 steering stem's shafts? [the middle section of the stem, between the threaded top and the bottom boss the race or bearing seats on]
At the time we found out there were different ODs, IINM the STs with the larger diameter stem shafts were thought to be the later model ABS ones. I know the unmodified original pipe worked fine on my '91 non-ABS. However, the stem the driver pipe won't fit over is a 2001 non-ABS.
Can anyone help with info on this? Would be much appreciated. TIA
Regards, John
Last edited: