Model A Ford - Mitchell Gear Splitter OverDrive System

Mitchell Gear Splitter

Introductory Video for Installing the Mitchell Gear Splitter

Mitchell Gear Splitter available in 27% and a 33% O/D ratio, The internals are simple...and in underpowered cars like model A's when being "toured" in the mountains, the ability to split-shift is a nice feature. After they are 'worn in' a bit, you can shift them on-the-fly without even depressing the clutch pedal, just lift and flip it in and out of O/D as need be. If I had to give a negative, I would say that the extra gear shift lever protruding from the floor can be a nuisance --especially in cars that have tight floor spaces.

Source URL's: 

Installing an OverDrive: http://www.management-advantage.com/media/DVD-OverdrivePreview2010.wmv
Short Story: http://www.365daysofa.com/post/10584346803/day-346-getting-our-hands-dirty 

Mitchell OverDrive: http://www.management-advantage.com/media/ModelAFordOverdrive.jpg

Ford Model A - Sealing the transmission shaft (gear box)

The transmission can be the cause of an oil leak. Therefore I have modified this part of the gear box.

In the lower part of the picture you can see the two gear shafts.

Here you can see the modified gear shaft on the left hand side with an O-ring. On the left is the old original one. You don't have to make this modification by yourself, you can buy it at Bratton's. Source:  http://www.maurer-markus.ch/ford_a/mod_getriebewelle.en.html