AlanG Posted May 13, 2020 Report Share Posted May 13, 2020 I want to fit oversize spindles to my SU's but can't find a reasonably priced reamer. Does anyone know where I might get one. Thanks Alan. Quote Link to post Share on other sites
RogerH Posted May 13, 2020 Report Share Posted May 13, 2020 Hi Alan, do you actually need the over size spindles. When I took mine apart I found that the bores had a quite hard bush already fitted. The spindles were badly worn but not the bushed bores If you do need a reamer try TRacy Tools in Devon https://www.tracytools.com/ Roger Quote Link to post Share on other sites
BlueTR3A-5EKT Posted May 13, 2020 Report Share Posted May 13, 2020 As Roger has written often the wear is on the old spindle and not in the body bush. Take the old spindles out and test the body bush size with the shank of a drill. That will guide you to the size of spindle required. A standard sized spindle is......By imperial micrometer 0.311” By my metric very-near 7.91 mm So that’s 5/16” then. Try a 5/16” drill shank in the carb body and see how much it wobbles before committing to spindles. Cheers Peter W Quote Link to post Share on other sites
Drewmotty Posted May 13, 2020 Report Share Posted May 13, 2020 (edited) As Roger has found above; I’ve rebuilt many sets of SUs H4,H6 and HS6 but I’ve never had to replace the bushes as all the wear usually occurs on the spindle. Try an unworn section of your spindle in the bush to see if it really needs bushes. Edit: looks like Peter can type faster than I can :-) Edited May 13, 2020 by Drewmotty Quote Link to post Share on other sites
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