Are hand throttles rare?

[LawMan02]

My '72 GMC K2500 has one. It was a truck that belong to a fire department and is equipped with a pto winch. Everything is in great shape and still works.

[Bob Moore]

shoobear - what year is the parts truck you found this on? If I know what year I will try to post some pics on Thursday.

[shoobear]

Hey it is a 1972 chevy 3/4,4x4.

[special-K]

So,are you using this hand throttle or would you like to sell it?...To,oh I don`t know,me?

[shoobear]

hey im gonna put in my new project truck. its too cool not to!

[knsmodels]

Originally Posted by chevy71super

My dad's 72 K10 had one. We used it to feed livestock. Put the truck in 4-LO, first gear, pull out the throttle and jump in back and feed. The truck would just "crawl" along. Local dealer ordered them that way for the ranchers.

My 72 K10 has this option and was ordered new by a farmer as a work truck and this is what I have always been told as to why.....

[mburgert]

My 72 Cheyenne C10 has one, for what reason i dont know. For the longest time i just figured it didnt work. But yesterday i took the dash bezel and pulled the knobs and i dedided to pull on the metal arm that hooks to the knob and to my surprise the gas pedal went down as it should. Now i just need to find a knob that works because the one i have just pulls off when i tighten the screw. Its kinda cool.

[ChevLoRay]

In 1970, the records indicated that 3% of the commercial trucks were equipped with the Manual Throttle. I didn't find other records that showed the percentages.

My 1969 book shows it to be an option on C and K 20 and up, option code K31, priced at $8.65 (MSRP), delivered. It isn't listed for the C or K-10's. But, looks like anyone could have bought one and put it on, themselves. That's the good thing about options from "back in the day". I once had a '71 Pinto and wanted a rear window defogger as well as some other options. This was back in '78. So, a visit to the Fomoco dealer and a look through their parts book, and I had my defogger. Wish I still had it...it was a fan unit and would have other uses, for me, today.

[mburgert]

My 72 c10 cheyenne actually has it listed as an option on the glove box. Cant wait to use it as my "cruise control" once i find a knob that makes it work or rig one of the other knobs to make it work.

[dougs69c10]

I have one on my 69 but its on the left hand side, to the left directly of the speedo.

[Bob Moore]

Guys take it easy. The hand trottle is a "twist" operation not a "pull". The twist gives a slow gentle movemen t to the cable as opposed to a yank on the knob. The choke is a pull and then push off. Does not have to be real precise in working. The hand throttle needs a very gentle application to avoid RPMs shifting and causing the truck to jump up in speed or buck out of control.

Most of the hand throttle cables I come accross now (35 years old approx) are broken - do not operate when turned. The mechanism is a worm gear but the cable has become detached internally.

A choke cable could do the job if yours is broken but could also create its own problems.

Does anyone know of a repair shop that deals in small cables like this or is there a board member that does this?

[boundstaffpress]

These are not cable.
My throttle has a single hardened steel wire that runs inside of a coiled steel guide. I'm working on some sort of fix for a detatched wire inside of the handle. I'm thinking that if I drilled a small bearing to accept the steel wire, I could fasten it to the wire with a punch.

If anyone else has a fix let me know, I would be glad to try it.

[ChevLoRay]

A hard wire that runs inside of a coiled flexible steel duct/tube/pipe/guide, is a cable. When you go to a parts store, and ask for a choke cable, or a throttle cable, it will look similar to the one you have. I'm not trying to be a wise acre, just trying to help you when you go to get a replacement.

When I was selling parts, I had people asking for "Center head gaskets for a '69 Deuce and a Quarter", as well as a "sturmistat". There's lots more of this stuff happening every day.

It's a cable.

[oscareltemblo]

It
was problably used for cruise control back in the day lol.

[Americanrider]

Here is the early style throttle coupler. I still have not hooked mine up yet.

http://67-72chevytrucks.com/vboard/s...34#post1505334

[Bob Moore]

Thank you ChevLoRay - Bob

I agree

[bucket]

as has been pointed out, the knob assembly needs to spin independently of the inner and outer cable which are fixed in place. i repaired mine by using bicycle shift cable. these come with a small boss on the end. i ground the boss down and perfectly round using a dremel. the cable then was fed through the opening in the side of the handle assembly where the aforementioned boss rests and rotates inside the handle assembly. (if you have seen one, you will know what i'm describing) anyway, worked good for me!

[Bob Moore]

Thank you Bucket. A great idea - Bob

[67_CST]

Originally Posted by Bob Moore

Most of the hand throttle cables I come accross now (35 years old approx) are broken - do not operate when turned. The mechanism is a worm gear but the cable has become detached internally... Does anyone know of a repair shop that deals in small cables like this or is there a board member that does this?

I have a small-engine repair place next to my shop that can repair twist cables, pull cables... just about any kind of metal-jacket or plastic-jacket cable set up. I think just about any knowledgable lawnmower/small engine repair facility would be able to fix these things.

[Bob Moore]

Boy I love this board. We have had 2 or 3 great ideas SHARED with other members. Everybody on this thread is trying to help each other out with ideas to fix a hard to find part.

Good thoughts about the bicycle shop and lawnmower repair shop. Funny thing is that I have my own lawn service business and had not thought of that angle.

Thanks for sharing - Bob

[mburgert]

FYI Chevy Duty sells the Throttle knob (9$) and the Throttle knob and cable combo (27ish) in their catalog. My luck they wont have them or backordered or something like that. My cable isnt broke because when i pull on the piece that is suppost to go into the knob it works (footfeed goes down), but when i twist it the thing makes a noise and "jumps" back to where it was before i started to turn it, so im gonna reorder the cable which i am assuming has the mechanism that allows it to twist outward becasue i see nowhere that i can get into the mechanism so im guessing its all one piece (ill ask to be sure though).

[special-K]

It sounds like the lower end of you cable isn`t turning.Try cable lube or,first,PB Blaster to free it up.The rarest aspect of this set-up is the mechanism at the pedal.

[wibilly]

i found one on a 68 custom camper cst in the bone yardi didn't take it because it looked cobeled on throtel linkage under the hood. after seeing the pic it may have been coreect. to bad some jack a$$ broke the dash bezel in to trying to get at somthing. i'll go back and get whats there. and a answer on the buddy buckets that if the other guy who asked a year ago didn;t get i could have for $75

[mburgert]

called chevy duty (now classic auto) they had the knobs but discontinued the cables . So i took my throttle out of the cab and saw that you could take it apart from the back, so i got it apart after about an hour of persuading. The mechanism consists of two "little bullet shaped pointed metal things" with the other side open ended with springs that fit inside. These push into the grooves of the "screwlike thing" which causes it to turn outward or inward. The cable on mine is attached to the other end (no breaks) so i am blaming it on the grooves not being deep enough or worn, or the points on the "little bullet shaped pointed metal things" not being pointy enough and fitting into the grooves. Its probably a combination of the two because when i took it apart i made the springs stronger by stretching them a little bit and it made no differnce.

[Bob Moore]

Pictures please - Bob