Unlike the NASH transmission mounted speedometer drive sold for Model T's, which used more than two gears, did the Patterson drive use only two gears, one on the transmission output shaft and one on the end of the cable which was secured to the transmission inspection cover?
Does anyone have a copy or original booklet of Patterson installation instructions. There must be a copy out there as a booklet of them was sold on EBAY in the past years. if a booklet is available, I would be indebted to someone if they would copy their booklet and make it available to me.
Patterson Speedometer Drive for Model T
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ModelTWoods
Topic author - Posts: 1443
- Joined: Tue Jan 08, 2019 10:53 am
- First Name: Terry
- Last Name: Woods
- * REQUIRED* Type and Year of Model Ts owned: 1927 Model T coupe, 1926 4 door sedan
- Location: Cibolo (San Antonio), TX
Patterson Speedometer Drive for Model T
Last edited by ModelTWoods on Sat Aug 02, 2025 11:32 pm, edited 1 time in total.
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Allan
- Posts: 6654
- Joined: Sun Jan 06, 2019 7:21 pm
- First Name: Allan
- Last Name: Bennett
- * REQUIRED* Type and Year of Model Ts owned: 1912 van, 1917 shooting brake, 1929 roadster buckboard, 1924 tourer, 1925 barn find buckboard, 1925 D &F wide body roadster, 1927LHD Tudor sedan.
- Location: Gawler, Australia
Re: Patterson Speedometer Drive for Model T
The Patterson drive used a two piece bronze spiral gear fitted next to the clutch throwout. The two halves of the gear were held together by a couple of split [cotter] pins! This could be fitted as an aftermarket item, unlike the Nash drive which involved much more work to install.
If anyone has a spare tapered fibre gear that goes on the Patterson drive pickup in the transmission cover, i have a friend who needs one.
Allan from down under.
If anyone has a spare tapered fibre gear that goes on the Patterson drive pickup in the transmission cover, i have a friend who needs one.
Allan from down under.