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QuoteToday been working on the tie rods that go between the crossmembers. Made up the rods, threaded each end 4-40, then started on the nuts. These are castle nuts, from the photos it and plans it looks like these rods may have served to compress the rods towards each other a bit, to adjust the tension in the crosshead guides? The diaphragm plate and the bearing main bearing caps fixed the frame rod centers. The tie rods, as you noted, just stop the cross head guides from spreading apart. I don't know that they were intended to pinch the guides together as you needed some operating clearance. Normal practice was to shim between the cross head guide and the cross head supports to get the right distance, not torque up on the tie bolts. It was not until 1922 and the model 740 that Stanley double nutted the tie bolts (a nut above and below the cross member) so that they stopped the cross head guides from spreading or converging. It helped stiffen up the frame rod assembly slightly. To offset this improvement they started stamping the engine serial number (in addition?) on a frame rod, adding a stress riser. Previously it was just found on the rear cross member, top face. -Doug
Today been working on the tie rods that go between the crossmembers. Made up the rods, threaded each end 4-40, then started on the nuts. These are castle nuts, from the photos it and plans it looks like these rods may have served to compress the rods towards each other a bit, to adjust the tension in the crosshead guides?
What? Plenty of room! Why I must measure several inches across on the monitor... -Doug
I'm seeing a 90degree jig with four rods, 4 turned and drilled parts and a crossmember all soldered together at one time,, or cris will just carve it out of a solid block..
are you going to turn the insert section of the guide fixtures long and then add a sleeve to the back side off the crossmember.. should all align nicely
Chris--When I have to set down and take a break from my project, I always set at my computer and look at your project. Very, very nice.---Brian
One other question for the crankshaft area - there are a pair of nuts on each frame rod holding the crankshaft bearing blocks together. But, there is then a spring and another nut. What is that for? Is the 'nut' inside the spring, against the bearings, really a nut, or does that have a clearance hole? Guessing it is part of the mount to the frame?
Is the cylindrical unit above the axle a generator for lights?