Patterson Speedometer Drive for Model T
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ModelTWoods
Topic author - Posts: 1460
- 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
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?
Last edited by ModelTWoods on Mon Aug 04, 2025 4:24 pm, edited 2 times in total.
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Allan
- Posts: 6716
- 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.
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ModelTWoods
Topic author - Posts: 1460
- 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
Re: Patterson Speedometer Drive for Model T
I bought a complete Patterson set up. I bid on an original installation booklet for a Patterson set up. The EBAY auction for the booklet ended last night. Unfortunately, I wasn't high bidder, so if the winner of the auction is a Forum reader, please get in touch with me. If you'd copy the booklet for me, I'll make it worth your time and effort.
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Shannon_in_Texas
- Posts: 195
- Joined: Tue Nov 05, 2019 10:40 pm
- First Name: Shannon
- Last Name: Helm
- Location: Arlington TX
Re: Patterson Speedometer Drive for Model T
Terry, this post may have what you need:
[https://www.mtfca.com/discus/messages/5 ... 1431056113]
I also have a Patterson drive setup but the pinion gear is pretty worn. Could you post pictures of your gear with some measurements?
[https://www.mtfca.com/discus/messages/5 ... 1431056113]
I also have a Patterson drive setup but the pinion gear is pretty worn. Could you post pictures of your gear with some measurements?
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Allan
- Posts: 6716
- 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 drive I have has a four start spiral gear and a 10 tooth fibre pinion gear which is well worn. The top right hole in the cover is round as usual. All the others are slotted. I presume this is to allow some sort of mesh adjustment between the spiral gear and the pinion.
Allan from down under.
Allan from down under.