NH Carb conversion throttle linkage

Discuss all things Model T related.
Forum rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules

Topic author
MN_Ford_Fan
Posts: 45
Joined: Sat Apr 04, 2020 7:37 pm
First Name: Ryan
Last Name: Uecker
* REQUIRED* Type and Year of Model Ts owned: 1926 Model T Runabout
Location: Hutchinson, MN
Board Member Since: 2019

NH Carb conversion throttle linkage

Post by MN_Ford_Fan » Sat Feb 19, 2022 1:20 pm

I have found a few posts on this topic, but no clear answer to the problem. I am installing Lang's NH conversion kit and it appears the over-the-top throttle linkage is too short. Because this issue has came up before, I am surprised this hasn't been addressed by Lang's in the instructions. I can't help but wonder if the 2nd hole in the carb throttle lever bracket might play a role? What else would that hole be for? Anyone have any insight on this issue?
The first picture shows throttle at idle and 2nd hole in bracket. The 2nd picture shows the short length with throttle lever fully raised.
linkage1.jpg
linkage2.jpg


Scott_Conger
Posts: 6523
Joined: Sun Jan 06, 2019 11:18 am
First Name: Scott
Last Name: Conger
* REQUIRED* Type and Year of Model Ts owned: 1919
Location: not near anywhere, WY
Board Member Since: 2005

Re: NH Carb conversion throttle linkage

Post by Scott_Conger » Sat Feb 19, 2022 2:46 pm

the 2nd hole is if you have a pre '25 carb with a longer throttle lever

the throttle rod is short because (it looks like) you have a home-made throttle lever possibly welded in an incorrect position on your column's throttle lever rod. At least that's what it looks like.
Last edited by Scott_Conger on Sat Feb 19, 2022 3:01 pm, edited 1 time in total.
Scott Conger

Tyranny under the guise of law is still Tyranny

NH Full Flow Float Valves™
Obsolete carburetor parts manufactured

User avatar

RajoRacer
Posts: 5172
Joined: Sun Jan 06, 2019 12:18 pm
First Name: Steve
Last Name: Tomaso
* REQUIRED* Type and Year of Model Ts owned: 1914 Touring, 1919 Centerdoor, 1924 TT C-Cab Express, 1925 Racer
Location: Longbranch, WA
Board Member Since: 2001

Re: NH Carb conversion throttle linkage

Post by RajoRacer » Sat Feb 19, 2022 2:58 pm

There was/is a clamp-on throttle lead available that was/is used for Vaporizer carburetor for blocks not supplied with the throttle rod hole in the center of the block. I might have a clamp-on lead around here.


Topic author
MN_Ford_Fan
Posts: 45
Joined: Sat Apr 04, 2020 7:37 pm
First Name: Ryan
Last Name: Uecker
* REQUIRED* Type and Year of Model Ts owned: 1926 Model T Runabout
Location: Hutchinson, MN
Board Member Since: 2019

Re: NH Carb conversion throttle linkage

Post by MN_Ford_Fan » Sat Feb 19, 2022 3:18 pm

Scott_Conger wrote:
Sat Feb 19, 2022 2:46 pm
the 2nd hole is if you have a pre '25 carb with a longer throttle lever

the throttle rod is short because (it looks like) you have a home-made throttle lever possibly welded in an incorrect position on your column's throttle lever rod. At least that's what it looks like.
I think you are correct now that I look at it closer. And the throttle linkage rod for my vaporizer looks homemade.
The throttle lever rod has the means to connect a linkage for the thru-block method, but my block does not have the hole. Looks like someone welded on the higher lever for the over-the-top vaporizer.


Scott_Conger
Posts: 6523
Joined: Sun Jan 06, 2019 11:18 am
First Name: Scott
Last Name: Conger
* REQUIRED* Type and Year of Model Ts owned: 1919
Location: not near anywhere, WY
Board Member Since: 2005

Re: NH Carb conversion throttle linkage

Post by Scott_Conger » Sat Feb 19, 2022 3:37 pm

Pretty much what I figured.
Just make an appropriate rod with a jog to go around the coil box and you're golden
Scott Conger

Tyranny under the guise of law is still Tyranny

NH Full Flow Float Valves™
Obsolete carburetor parts manufactured


Topic author
MN_Ford_Fan
Posts: 45
Joined: Sat Apr 04, 2020 7:37 pm
First Name: Ryan
Last Name: Uecker
* REQUIRED* Type and Year of Model Ts owned: 1926 Model T Runabout
Location: Hutchinson, MN
Board Member Since: 2019

Re: NH Carb conversion throttle linkage

Post by MN_Ford_Fan » Sat Feb 19, 2022 3:46 pm

Scott_Conger wrote:
Sat Feb 19, 2022 3:37 pm
Pretty much what I figured.
Just make an appropriate rod with a jog to go around the coil box and you're golden.
Yep, looks like that would be the easiest/cheapest method. The homemade rod for my vaporizer looks like it will be long enough to modify for the NH possibly. And now that I know it's not the original vaporizer rod, I won't feel bad modifying it. Thank you Scott!

User avatar

RajoRacer
Posts: 5172
Joined: Sun Jan 06, 2019 12:18 pm
First Name: Steve
Last Name: Tomaso
* REQUIRED* Type and Year of Model Ts owned: 1914 Touring, 1919 Centerdoor, 1924 TT C-Cab Express, 1925 Racer
Location: Longbranch, WA
Board Member Since: 2001

Re: NH Carb conversion throttle linkage

Post by RajoRacer » Sat Feb 19, 2022 3:58 pm

I recently opened up the throttle rod hole in a '27 block - there was actually an "outline" of the appropriate hole size cast into the valve side of the block - drilled a 5/8" hole and cleaned up the residual with a Dremel grinding wheel.

Post Reply Previous topicNext topic