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Watson Auxiliary Transmission
Posted: September 29, 2011, 4:05 pm
by Blackwaterforge
Does anyone know anything about Watson Auxiliary transmissions?
The tag says Watson Transmission
Brown-Lipe
Spicer
Model # 45
c 30-15-118-1
Weighs 110 lbs
Thank You!
Posted: September 30, 2011, 8:52 am
by R Pope
I believe the "Watson" is a rebuilder and you have a Brown-Lipe trans, known as a Brownie Box in the old days. They made all sizes, three to five speeds.
Posted: September 30, 2011, 7:25 pm
by Tech
The yahoo Detroit diesel group has a chart on the brownie gear ratios but it is looking for a four digit number like 8345-C
Posted: September 30, 2011, 8:13 pm
by rwhistles
`posted this sometime back.scroll down for pic. watson was a single speed aux. mounted one way it was an underdrive, turn it around it was an overdrive. about as scarce as brownies.
http://fordtruk.com/forums/viewtopic.ph ... rnsmission
course they might have made more than one model.
Posted: October 1, 2011, 5:29 am
by fmartin_gila
Posted: October 1, 2011, 12:43 pm
by R Pope
Whoa! Didn't see the 110 pounds part! Definitely not a real Brownie Box!
Posted: October 5, 2011, 1:08 pm
by Blackwaterforge
Here is the auxiliary transmission.
It weighs 115 lbs.
In under drive three rounds on the input shaft produces two turns on the output shaft.
In direct drive it is 1:1
In Overdrive three turns on the input shaft produces four rounds on the output shaft.
Is that a 50% under, 25% over?
I will have to clean it up and open it up but it turns smooth.
Dimensions are 19" long 12" high and 12" wide.
Thank You!

Posted: October 5, 2011, 3:39 pm
by Obsa
Don't know if you have seen this yet, if not maybe it will be of some help to you
http://www.google.com/url?sa=t&source=w ... jQ&cad=rja
Posted: October 5, 2011, 5:10 pm
by oldtrucks
I have something similar in my 1950 F7. I think I need to investigate a bit I might have a gem on my hands.
Posted: October 5, 2011, 6:47 pm
by aeromech
Posted: October 5, 2011, 6:49 pm
by aeromech
Make that
www.spicerauxiliarytransmissions.com
Fat fingers problem on keyboard.
Posted: October 5, 2011, 6:52 pm
by aeromech
one more time;
http://www.truckparts.org/part_type/truckparts/spicer-
auxiliary_transmission.html
Hopefully this is it.
Posted: October 5, 2011, 6:56 pm
by aeromech
Posted: October 5, 2011, 6:59 pm
by aeromech
Posted: October 5, 2011, 7:01 pm
by aeromech
Posted: October 5, 2011, 9:54 pm
by Obsa
Dang aeromech, this reminds me of something my Dad told me years ago when I first got married and the wife and I were talking about having children. The words of wisdom "Throw enough mud at the wall and some of it will stick"

Posted: October 6, 2011, 7:27 am
by Blackwaterforge
Thanks Guys!
Re: Watson Auxiliary Transmission
Posted: December 26, 2018, 7:40 pm
by chris401
Blackwaterforge wrote:Here is the auxiliary transmission.
It weighs 115 lbs.
In under drive three rounds on the input shaft produces two turns on the output shaft.
In direct drive it is 1:1
In Overdrive three turns on the input shaft produces four rounds on the output shaft.
Is that a 50% under, 25% over?
I will have to clean it up and open it up but it turns smooth.
Dimensions are 19" long 12" high and 12" wide.
Thank You!

Hello, did you end up using the Watson? Things aren't jiving between my 65 F-250 -parking brake - Brown Lipe 5531-A and auxiliary gas tank. Looking at other possible options.
Thanks
Re: Watson Auxiliary Transmission
Posted: January 6, 2019, 8:55 am
by Blackwaterforge
I did use the Watson.
I used parking brake but I don’t have auxiliary tank.
Re: Watson Auxiliary Transmission
Posted: January 6, 2019, 9:50 am
by chris401
Blackwaterforge wrote:I did use the Watson.
I used parking brake but I don’t have auxiliary tank.
Did you get your expected fuel mileage increase? I am going ahead with the Brown Lipe install on mine nut leaving out the fuel tank for now. I will install the tank when I install the Clark with the transbrake. If that does not work out I will just stick a transbrake on my current NP435 then install the gas tank.