Bachmann c-19 axle gear

[Crashbig]

Ok so this might be a long shot but does anyone have an axle gear for Bachmanns c-19, I'm trying to cobble together the gear train from the C-19 into a Connie and it looks like its possible with a little tweaking but I either need the axle gear or the dimensions to try and match one up from some other source (r/c cars use pinion gears that look close) Thanks everyone