Nick,
Before I forget, it is not adviseable to gear up in a hi torque situation, as yours is, it is ok if you are spinning up something like a grinding wheel, but not anything that has a heavy load involved. Either the motor will stall and most probably say goodbye and lose all it's smoke, or you will start to get teeth flying off the speed increase gears.
Now on to the motors.
These are 24 volt motors, except the buggy one which is rated for 18 volts, but they run very sweet on 12 to 30 volts, except the buggy one, which I don't know what it will handle.
The small and middle sized ones are commercial hi torque, very low drain motors. The 550 size will pull less than 200MA on full load at 12 volts. So if you had say a 7AH gel cell battery (size about 6"L x 4"H x 2"W), that could give you up to 35 hours continuous running on one charge.
This first one is a 380 size. On normal model car racing buggies they are usually 540 sized, this is about 2/3rds the size of a 540.
This is the one I talked about, the 550 sized. It is about 1/4" longer than a 540.
As you can see, the buggy one is rather larger at about 5" diameter.
I do have a rather large amount of gears I have collected over the years. The large metal ones, if memory serves me right, are just over 25mm in diameter. All the metal ones are much of a muchness and with the limited sizes I have give roughly a 3 to 1 reduction. The very high quality ones, still in their clusters, are off the 550 sized motor I showed you above. All would need re-hubbing or machining to get them to how you want them
If you can use any of the above, except of course the buggy motor, when I am able to get out of the house, I will pop them in the post to you.
Bogs
