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RC-Monster Mike · 05.24.2010, 11:04 PM

The V3 pinion is 8mm turned down to 5mm bore, actually. The couplers are opposite to match of course(8mm partially through and 5mm partially through). the set screw location is different as well. I drill and ream the original V3 version couplers to 8mm all the way through, then drill and tap another set screw hole for the 8mm version(bit of a PITA).

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RC-Monster Mike Site Owner Offline Posts: 4,915 Join Date: Nov 2004 Location: PA	05.24.2010, 11:04 PM The V3 pinion is 8mm turned down to 5mm bore, actually. The couplers are opposite to match of course(8mm partially through and 5mm partially through). the set screw location is different as well. I drill and ream the original V3 version couplers to 8mm all the way through, then drill and tap another set screw hole for the 8mm version(bit of a PITA).