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ultima/optima um-1 ot-27 centre gear question
Posted: Fri May 09, 2014 7:48 pm
by sdrob
quick question.... what is the difference between the 6 hole and 3 hole spur/counter gear version 1 and version 2??? have been trying to find out but cant seem to locate any info..
Re: ultima/optima um-1 ot-27 centre gear question
Posted: Fri May 09, 2014 8:24 pm
by GoMachV
The um1 gear set for ultima and ot27 sprocket set for optima both include the same counter gear, or at least compatible gears. I have never noticed a difference in the hole count, may have been a running change