1950 Cub in Cool, CA

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Stoffregen Motorsports
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Zip Code: 95614

Re: 1950 Cub in Cool, CA

Postby Stoffregen Motorsports » Sat Jun 12, 2021 11:45 am

No update, just pics.

I love that so many of the parts have IH either stamped or cast into them.
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The cylinders look pretty good after a quick hone. There was virtually no ridge at the top and only faint evidence of water in the cylinders.
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Assembly time.
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Stoffregen Motorsports
Posts: 45
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Re: 1950 Cub in Cool, CA

Postby Stoffregen Motorsports » Sat Jun 12, 2021 11:52 am

The manifold had some welding done on it many years ago. Instead of the 1.25" thread, someone welded on a 1" pipe fitting.
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During the cleaning process, I was careful to leave the rusty finishes, but I did clean everything thoroughly. The manifold and head were blasted with garnet (on the insides) and the manifold outside was blasted from far away, just to get the scale off, but leave the old-ness. All other parts were either soaked in the solvent tank, run through the ultrasonic cleaner, or sprayed with Purple Power and scrubbed with a brush. The air cleaner soaked in the solvent tank for about a week to get all the slime out.

I think it came out as nice as it could, without a restoration. A simple preservation.
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Wheels off for new tires.
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Stoffregen Motorsports
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Re: 1950 Cub in Cool, CA

Postby Stoffregen Motorsports » Sat Jun 12, 2021 11:58 am

First test drive. I'll see if I can upload a video, but for now, here's a pic of my 8 year old driving.
Image

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Re: 1950 Cub in Cool, CA

Postby Stoffregen Motorsports » Sat Jun 12, 2021 12:10 pm


SamsFarm
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Re: 1950 Cub in Cool, CA

Postby SamsFarm » Sat Jun 12, 2021 1:03 pm

In California, is it a requirement to wear a helmet while on a tractor? :lol:

Looks like someone is wearing one in your pic!

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1952 Farmall Cub
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Re: 1950 Cub in Cool, CA

Postby Clemsonfor » Sat Jun 12, 2021 2:21 pm

SamsFarm wrote:In California, is it a requirement to wear a helmet while on a tractor? :lol:

Looks like someone is wearing one in your pic!

He's an 8 year old and that tractor sits way up in the air. I think it's smart till he gets used to it. But I'm sure dad is right there to aid if needed. And I'm sure he told him just to push that switch in if worried and want to stop quick as well as hit brake and clutch

Stoffregen Motorsports
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Re: 1950 Cub in Cool, CA

Postby Stoffregen Motorsports » Sat Jun 12, 2021 2:26 pm

He was wearing the helmet already while he was following me on his dirtbike, so when he got on the tractor, I just told him to leave it on.

The tractor does sit very high, and if he fell off, he'd probably bounce. Kids are made of rubber, but I don't want to kill him.

Funny thing, his first idea was that he could drive the Cub around the fire access road on our property, which is hilly and steep. So while he does understand how things work, he's still not mature enough to understand the dangers of driving a 70 year old 2wd tractor down steep hills.

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Re: 1950 Cub in Cool, CA

Postby Stoffregen Motorsports » Tue Jul 06, 2021 1:17 pm

My Cub project turned out to be a wise choice. What I mean is that I was getting very much bored with my current line-up of vehicles. I have been driving the Cub around the property and up and down the road. Have not yet addressed the carb issue or the ignition timing, but with the choke partially on, it runs smoothly enough. Driving the Cub around has filled that void, at least for the time being.

Yesterday it got stuck in reverse. I dug up an old thread here about getting stuck in reverse, but I have a couple questions. Yes, I pulled the cover and did a visual inspection, but nothing looked amiss. No broken shift forks or broken shifters there so I just made a new top cover gasket and reinstalled the shifter. Then it happened again. Without completely tearing into it, I want to know two things first.

1 - Is there supposed to be a detent ball and spring on the first/reverse shift rod? There is not on mine, or it is stuck, because the rod moves freely fore and aft.

2 - The clicking noise others have described before the problem occurred, what is that clicking noise? I assumed it was just a bad gear, but have not verified anything as of yet. Could the clicking be a problem with the fork or the gear? Possibly a bearing? It is so consistent that it seems to me that it clicks in time with the revolution of the gear, not like a bad ball bearing.

3 - The shifter stick ball and socket assembly. Is it possible that there is something worn inside the ball of the shift lever which makes it difficult to move the stick? The stick mostly moves freely, but going from 1st/reverse to 2nd/3rd, there is a definite tight spot.

Any thoughts?

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Glen
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Re: 1950 Cub in Cool, CA

Postby Glen » Tue Jul 06, 2021 7:34 pm

Hi,
1, Yes, there is a detent ball and spring for the 1st and reverse shifter rod, like there is for the 2nd and 3rd shifter rod.
There should be positive snaps shifting into all 4 positions.

Below are listings for the ball and spring at TM Tractor.

http://www.tmtractor.com/new/tr/1953fp.htm

http://www.tmtractor.com/new/tr/2768fp.htm

Below are pics at TM Tractor of the 1st and reverse shifter rod, showing the detent notches.

http://www.tmtractor.com/tm-tractor/gtr/frsr_001.htm

2, I think people have said on here that the clicking can be caused by 1 of the shifter forks being slightly in the wrong position, so the underside of it is rubbing on the clutch shaft.
Look closely with a light and see if it touches the shaft anywhere. It shouldn't touch the clutch shaft.
It can be adjusted on the rod by loosening the bolt and turning it slightly.

3, If the Cub has been sitting for years, the shifter may need oiling inside it, or up under the cap, if it is tight. Easier to oil it when it is off, and you can turn it upside down. Pry the cap up a little, so oil will go in.

Below are pics.
The 1st pic shows how it should look under the shifter, the pic is looking from the left side of the Cub.
The forks should both be in neutral to put the shifter on again.
The 2nd pic, from TM tractor shows the bottom of the shifter, and the shape of the ball. :)
Attachments
Cub trans 4.JPG
Cub shifter 4.jpg

Stoffregen Motorsports
Posts: 45
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Re: 1950 Cub in Cool, CA

Postby Stoffregen Motorsports » Wed Jul 07, 2021 10:40 am

Thanks, Glen, for the detailed response.

I believe that if I install a new detent ball and spring, the problem will go away, maybe even the clicking.

My shifter is in great shape, but I will probably disassemble the unit to be able to smooth out the socket area with some emery cloth.

On a side note, I understand that the gearbox filling with water is a problem on these tractors. Mine was when I tore into it. I feel like water drips down the shifter stick into the trans, and a simple rubber boot fit snugly over the stick would at least help with this problem. Has anyone ever tried this or found a suitable boot? If so, I'd love to hear about that. If not, maybe I'll start the search for a proper boot.

Thanks again.

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Re: 1950 Cub in Cool, CA

Postby wrz » Wed Jul 07, 2021 12:25 pm

When you have the shift lever off look at your gears to see if you have a broken tooth on one of the gears. On one of my lo boys I drained the transmission oil and stuck my finger in the drain hole and felt something , then with a magnet pulled a tooth out. It makes a clicking noise when in 3 gear.
Wm

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Don McCombs
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Re: 1950 Cub in Cool, CA

Postby Don McCombs » Wed Jul 07, 2021 12:56 pm

Browse through the How To forum and you will find several solutions to this issue.
Don McCombs
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Stoffregen Motorsports
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Re: 1950 Cub in Cool, CA

Postby Stoffregen Motorsports » Wed Jul 07, 2021 10:56 pm

wrz wrote:When you have the shift lever off look at your gears to see if you have a broken tooth on one of the gears. On one of my lo boys I drained the transmission oil and stuck my finger in the drain hole and felt something , then with a magnet pulled a tooth out. It makes a clicking noise when in 3 gear.
Wm


Yeah, I haven't done that yet, but will make sure to check before I put her back into service.

Stoffregen Motorsports
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Re: 1950 Cub in Cool, CA

Postby Stoffregen Motorsports » Wed Jul 07, 2021 10:59 pm

Don McCombs wrote:Browse through the How To forum and you will find several solutions to this issue.


Don, to what specifically are you referring? The responses so far have led me in the right direction, and as I mentioned earlier, I did a search and found a couple other threads about the stuck in gear issue. Is there some specific thing you think we've missed?

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Don McCombs
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Re: 1950 Cub in Cool, CA

Postby Don McCombs » Thu Jul 08, 2021 6:18 am

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