Hand throttle connection

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timjuhl
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Hand throttle connection

Post by timjuhl »

I've located a YS 950S Carb with a 1-897 throttle body which I understand is correct for the M38A1. The problem is that I can't see how to connect the hand throttle to the throttle arm on the carb.

Does anyone have a photo showing how the cable is connected? If it requires an additional part do you know of a source? I have wire stop for the end of the cable but that's it.

Thanks again!

Tim
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wilfreeman
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Post by wilfreeman »

Hey Tim,

There is a bracket mounted on the back 2 cover screws. Wes has an album showing a bunch of different angles of the carb - for some reason my phone won't let me post the link.
Matt
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wesk
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Post by wesk »

Image
The throttle cable goes thru the bracket at the top left of the photo.

Image

Image
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

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timjuhl
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Hand throttle connections

Post by timjuhl »

Thanks, that helps a lot. I currently have a Carter YF installed, using a different throttle rod that doesn't have the swivel installed. With your pix to go by, I went to a box of stray items from my parts Jeep and found the correct rod. I've also tracked down the throttle cable bracket so I should be in business as soon as the carb and a few other pieces arrive.

I DO appreciate the help!

Tim
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1946 Aeronca L16A Army Liaison Aircraft
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cabinfever
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Post by cabinfever »

I am having the same issue with attaching my hand throttle cable to the carb linkage.

Wes, in your last photo above, you show a "slide block" attached to the throttle rod. My throttle rod does not have the slide block. Is the side block something I can purchase as a separate unit and attach it to my throttle rod or does it come already mounted (ie, welded) to the throttle rod?

Does the slide block come by any other names?

I take it that a slide block is not the same as a wire stop.

Thanks
Steve Stark - 1955 M38A1 MD #85388

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whydahdvr
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Post by whydahdvr »

I couldn't find one in my local hardware or automotive store so I made one with a short, small bolt and two nuts. I drilled a hole through the bolt, set one of the nuts above the hole, the other below it, and then passed the throttle rod or cable through the hole. Then a cranked down the two nuts to compress on the throttle cable, holding it in place. I have some excess cable on the outboard end but am leaving that alone, uncut, for now.
Just a field expedient suggestion to get you going. It has been working well for me for a year.
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Post by wesk »

Is the side block something I can purchase as a separate unit and attach it to my throttle rod or does it come already mounted (ie, welded) to the throttle rod?
It is permanently fastened to the rod with a welded washer. It is free to pivot while the rod moves back and forth and also up and down a bit as well.
I take it that a slide block is not the same as a wire stop.
No it is not the same as a wire stop.
Wes K
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Post by cabinfever »

whydahdvr wrote:I couldn't find one in my local hardware or automotive store so I made one with a short, small bolt and two nuts. I drilled a hole through the bolt, set one of the nuts above the hole, the other below it, and then passed the throttle rod or cable through the hole. Then a cranked down the two nuts to compress on the throttle cable, holding it in place. I have some excess cable on the outboard end but am leaving that alone, uncut, for now.
Just a field expedient suggestion to get you going. It has been working well for me for a year.
I like that idea. I think I might give it a go. Thanks!

I might modify your design by making two holes in the bolt, one for the throttle rod to pass thru and the other for the hand throttle cable wire to pass thru. I will then use a wire stop on the outboard end of the wire. I believe that way there would be less chance of the cable wire to interfere with the movement of the rod.
Steve Stark - 1955 M38A1 MD #85388

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cabinfever
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Post by cabinfever »

wesk wrote:It is permanently fastened to the rod with a welded washer. It is free to pivot while the rod moves back and forth and also up and down a bit as well.
Wes, just to beat this topic to death, the photo below shows the correct slide stop for the hand throttle....right?

Image
Steve Stark - 1955 M38A1 MD #85388

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whydahdvr
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Post by whydahdvr »

Correct.
I just uploaded a picture of my field expedient version to my photo album.
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Post by RICKG »

whydahdvr wrote:Correct.
I just uploaded a picture of my field expedient version to my photo album.
I like your slide stop Josh. I'll put that to work on mine. Your main
throttle "farmer's cotter key" is field expedient too.. :lol:
keep 'em rollin'
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Post by cabinfever »

Well, I've been searching for the correct throttle rod for my A1 for a couple months with no success. My throttle linkage has no place to attach the wire coming out of the hand trottle cable.

I decided to do some jerry-rigging and came up with the following solution. I purchased a small 1/8" U-clamp (U-bolt) and two wire stops. Luckily, the threads on the U-clamp were the same size threads used by the wire stops.

I attached the set-up to the throttle rod as close as I could to the carb. I did not tighten the wire stop to the U-clamp so it can swivel side-to-side. The following is the best I could do at drawing my set-up. It works perfectly!

Image
Steve Stark - 1955 M38A1 MD #85388

Member - MVPA #35153
Member - Red Bull Historic Military Vehicle Association
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