How to test overdrive throttle switch and need arm

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chuck1006

Jedi Hopeful

Offline

• Oct 13, 2010

• #1

Hi,
I have a throttle swith for my 100-6 overdrive but am not sure how to test. I put the olm meater on and turn the rod. It goes from open to closed but should there be a gradual increase? I also don't have the arm or lever for it. Any ideas where to get?
Thanks
Chuck

 

5

57_BN4

Guest

Guest

Offline

• Oct 14, 2010

• #2

Hi Chuck,

The throttle switch is just a switch, it should go from closed somewhere about the rest position to open either side of that point. Pretty basic inside, just a cam on the shaft and a set of contacts that are opened whenever the cam is not in the rest position.

Here's mine that I screwdrivered open the other day.

Andy.

 

OP

C

chuck1006

Jedi Hopeful

Offline

• Oct 14, 2010

• #3

Thanks Andy...based on that, mine seems to work fine. Now if I can just find the arm and linkage that goes on it.
Regards,
Chuck

 

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John_Progess

Jedi Warrior

Offline

• Oct 14, 2010

• #4

Chuck,
I have an extra switch and you are welcome to the arm. I don't have an extra link but I think I can make one quickly. I live in Sale Lake so postage to Phoenix should be small. Let me know and have a good day!

John

 

Keoke

Great Pumpkin

Offline

• Oct 15, 2010

• #5

Be sure and pack it in Ice or it will surely melt I just left Phoenix-----HOT!!!---

 

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C

chuck1006

Jedi Hopeful

Offline

• Oct 17, 2010

• #6

Thanks John,
I would appreciate getting the arm. I don't have any pictures showing how the link (rod) attaches from the arm to the throttle linkage. I checked some british car part sites and they have the arm and rod but not the part that connects to the throttle linkage. I will probably buy the aftermarket relay on Ebay. I am trying to gather all the parts now and then will pull the tranny to put in the overdrive mainshaft and install the overdrive. I have a few spare parts too in case you need something. By the link do you mean the rod that goes from the arm to the throttle?
Regards,
Chuck

 

OP

C

chuck1006

Jedi Hopeful

Offline

• Oct 17, 2010

• #7

Hey Keoke,
Try driving a Healey here in 110 degrees. Like a sauna...guaranteed to lose a few pounds each outing..I should to do it more often! Of course, it's a dry heat!
Regards,
Chuck

 

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Healeysince59

Jedi Warrior

Online

• Oct 17, 2010

• #8

Come down to Tucson. In August we do a "Mad Dogs and Englishmen Run" . 100 miles at 100 degrees. This year we had 12 LBCs and they all made it.

Marv J

 

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chuck1006

Jedi Hopeful

Offline

• Oct 17, 2010

• #9

Hi Marv J,
Sounds like a fun run. Would like to try that but don't have a trailer so, it would be 100 miles to Tucson, the 100 mile run and 100 miles back to Phoenix. Not sure I would like to do that in August but one never knows.
Regards,
Chuck

 

Randy Forbes

Yoda

Offline

• Oct 17, 2010

• #10

Ppfffttt!

My Healey was a daily driver for quite a few of the years I lived in Southern Louisiana. Oh sure, we only had 95-105* temperatures in the summer, but it wasn't a dry heat, we were saturated in 100% humidity too.

:wink:

 

Keoke

Great Pumpkin

Offline

• Oct 18, 2010

• #11

chuck1006 said:

Hey Keoke,--WOT!!

Try driving a Healey here in 110 degrees.

Like a sauna...guaranteed to lose a few pounds each outing
.
I should do it more often! -- Me too-- :laugh:

Of course, it's a dry heat!

Oh Yeah!! CHUCK, then why was I wringing wet all the time except when I was dogging 1" hail stones.---Keoke --------- :laugh:


Regards,
Chuck

Click to expand...

 

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John_Progess

Jedi Warrior

Offline

• Oct 18, 2010

• #12

Chuck,
The linkage is made from 1/8" dia rod about 10.25" long with 90 deg. bends on both ends and a couple of "Z" bends in the middle to allow for clearance of the main throttle rod. On the part of the throttle system that is located above the transmission there is a lever that has a link from it to the main rod that goes from the firewall to the carbs. The throttle switch link attaches to this lever at approximately the same location as the link up to the main rod. Probably clear as mud but I can make you a switch link if you need one. Have a good day!

John

 

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IanIrving

Jedi Hopeful

Offline

• Oct 19, 2010

• #13

Hi Chuck, Look at the AH spares catalogue, under "switches", there's a picture and linkage is available from them. No connection with the company, just a satisfied customer.
Ian
https://www.ahspares.co.uk/en/products/default.aspx

 

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ahfan

Senior Member

Offline

• Aug 21, 2018

• #14

chuck1006 said:

Thanks Andy...based on that, mine seems to work fine. Now if I can just find the arm and linkage that goes on it.
Regards,
Chuck

Click to expand...

I just bought a new throttle linkage from AH Spares which came with the linkage.