1953 Tucker Sno Cat 443 Mt Washington WMTW Channel 8 Restoration

Track Addict

Bronze Member
GOLD Site Supporter
Hurricane summer delay so got some Tucker time.

Frame is stripped down with the exception of the rear upper table and front trunion mount. These are load bearing in the current state.

Next steps for the frame is to add bracing and support to true everything up and prepare for cutting the frame. Don’t want anything to shift.

Have a good plan the hold and allow the adjustment that may be needed to meld to new frame.
90BB93FA-A5BC-4EDD-9146-3A54F4076BBE.jpeg
C54E3A92-397C-4E95-B407-0A28B8E3EFEE.jpeg
B16763CE-FACA-4397-A343-9B4E8AD66027.jpeg
E93F29BC-62D6-4BFC-BE9F-29DB73F3F3C3.jpeg
B5DB8616-1068-4AD4-96C0-6DE282C5F659.jpeg
F3E08650-595E-4B2A-887E-E27AA7C52A16.jpeg
 

Track Addict

Bronze Member
GOLD Site Supporter
The turn tables came apart easily. New bronze bushings and rollers will be made.

The front table pivot bushing appears to be the same as swing arm pivot. Test fitting the table seems right.

The trunion pivot is amazingly tight. It’s has been off before and either was rebuild or didn’t wear. Bonus either way. Rest of the machining and repair needed for these components are in my skill set.
E5982271-36A6-4EFB-B0D4-6C64D91A32D3.jpeg
F5FFD329-9D0F-49CE-B073-648551B46089.jpeg
E79AD70B-3D12-47DF-A9E7-8FFAA313DD0C.jpeg
E5982271-36A6-4EFB-B0D4-6C64D91A32D3.jpeg
F5FFD329-9D0F-49CE-B073-648551B46089.jpeg
E79AD70B-3D12-47DF-A9E7-8FFAA313DD0C.jpeg
80D4622D-8CCA-441F-82C6-D6A00BCDBD52.jpeg
3E840930-794B-45BF-94E8-3AA26EAB329A.jpeg
50BF9764-54E5-4212-A156-227BA2F120EF.jpeg
669E768B-7DD8-4166-B3DC-D8313FF4BC8A.jpeg
9DDA3955-0D76-4EA2-BB8D-E0703463EA60.jpeg
 

Track Addict

Bronze Member
GOLD Site Supporter
Braced the upper frame against any movement when in preparation for removal. Goal is to prevent any shifting once structural members are cut and grafted on to the new lower frame.

The 4 upright tubes the uni strut is attached to will be replaced with new material during the surgery.

The critical measurements are the motor mounts which are all attached to the upper frame and braced accordingly.
Moving along…
48BC075E-5826-4A2E-8E7D-04C3439B23E0.jpeg
31C934A3-4C66-4BF0-AEFC-CF17BB97CF32.jpeg
827BDB0D-6664-483B-B8A1-7694D6AD1E1A.jpeg
A0F4CFB3-FC9F-412A-BFDE-633F31FC49D3.jpeg



Big thanks to the Wednesday night crew and resources!
A7A86C6C-AC3E-4649-904F-BDC3A45F4976.jpeg
A7A86C6C-AC3E-4649-904F-BDC3A45F4976.jpeg
 

Attachments

  • 8F0B56CD-4AD6-4D51-B0D4-27E2701178CE.jpeg
    8F0B56CD-4AD6-4D51-B0D4-27E2701178CE.jpeg
    2.2 MB · Views: 14

Track Addict

Bronze Member
GOLD Site Supporter
This cat had a bench seat originally. The front bar was cut off on the driver side and the passenger post was missing along with a piece of the tube it was atrached

Patched the frame and fabricated a new crossbar and upright support for passenger side.

Filled some holes and cleaned up a horrible hinge weld job.


BE28030D-5A43-4EAE-846F-113D8947AC68.jpeg
DA603927-F334-48E0-97ED-EF1EFAECA929.jpeg
E2EBEB38-917A-4A1B-A287-0EBD0A110993.jpeg
 

Track Addict

Bronze Member
GOLD Site Supporter
Rear upper turn table removed. You can see how bad the frame was on this area

Removed the front trunion pivot. Never saw outer frame backers and the frame has bolt guides welded on. Upon closer inspection frame is broken under here and this was a sandwich repair.


807C792E-07A0-4621-B872-F25C7419D831.jpeg
741A2947-BF5A-4EA8-901B-157A98F0DFDE.jpeg
55BFE341-1F64-495B-BD6D-1BDA31A2B484.jpeg

Will use the pivot with the front oem frame as a locator to tie to the new frame.

Next steps is to prepare for the frame cut!


F7A852C6-57F0-4C80-B50D-29256A4AA7E0.jpeg
0C272AE7-95CF-45B6-89AA-6D5027B61777.jpeg
 

Track Addict

Bronze Member
GOLD Site Supporter
Got some nice tall stands donated. Once the upper frame is mounted to the lower frame plan is to flip the frame upside down to repair the bottom rot on the upper tube bottom. Need height to clear the roof frame.

Removed the tires from the axles and repurposed the dollys for some mobility over the winter of the frame.

Shuffled the frames around did some more mock up measuring and checking if the trunion mount.

Slight set back as we compared measurements. Piston mount frame tube was welded in front of the mark instead of behind so we are out 2 inches. I’ll take the blame.

On a positive note I wasn’t in love with reusing the cast piston mount welded on. Will use this take 2 opportunity to fab new mounts 1/2” plate and weld on.
D7DF156F-F9A0-438A-947B-12ACE425B918.jpeg
50C7679C-80D5-4E54-81E3-68E9093041A6.jpeg
64A4437D-E45B-4416-932F-8A87C8E74343.jpeg
82970A16-7D11-4FF6-A060-10BA5CCA9A5A.jpeg
DB21E479-63D5-4C79-A76F-C96AC260FFDB.jpeg
5519B5BA-9662-400B-8C4F-7512DDA3AEE0.jpeg
0473A695-B330-459B-A468-FBE0FF24CB33.jpeg
 

Track Addict

Bronze Member
GOLD Site Supporter
Bolt on clevis mount idea scrapped. There is barely enough room to fit 9/16 bolt without hitting the frame tube weld. 1 1/2” to work with.

Also the forces applied to the bracket isn’t ideal for the center bolt setup.

Probably why it was welded so new tabs will be fabricated out of this 1/2” plate and welded on.
9DE44ADC-CFA3-4DDD-8CC5-A22BF297FD3E.jpeg
 

Track Addict

Bronze Member
GOLD Site Supporter
Think this improved design keeps with the spirit of the original design.

Upgraded from 11 ga OEM to 3/16” on the cross tube and gusset. 1/2” plate upgrade from the questionable cast broken bracket.

I considered welding the tabs right to the tube but felt with the angles and forces at play the plate would spread the load better after welding all the way around.

Bronze clevis pin will get drilled for a roll pin. It was oversized so we created a shoulder on the large which acts as a stop or bolt head. The pin can only go in from one side and this eliminates a roll pin.


3F6DDAD6-46F1-49EC-89F8-EE9DD9739CF2.jpeg
E5FB7D0D-7B8C-4537-ACB4-B52BA3E1731E.jpeg
C51BE310-76FB-4EC8-B784-103565BE3A26.jpeg
8DA4C71F-276D-4B74-AE49-4BC7E258C0F5.jpeg
 

Track Addict

Bronze Member
GOLD Site Supporter
Patched more holes along the frame.

Added some more bracing. As long as I hold the engine mount dimensions, should be well within Tucker tolerance. Few more pieces to add.

Looks like the frame cut will be right behind the angled front down tubes. I front is a trunion mount bolt hole then we can use that to locate the other two bolts in the improved frame.
D9D845BC-F94B-41BE-B111-EA34BE03DEAB.jpeg
D19E1A62-E9B5-4BE6-9A86-423F61B0C821.jpeg
 
Top