I don't like fine thread. Always feels like it takes forever to get tight.
Not with an impact! Only time I've really used them. They are stronger.CK5
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One Piece at a Time: My 1985 Diesel Suburban
- Thread starter AgDieseler
- Start date
Not with an impact! Only time I've really used them. They are stronger.
Something like 50% more thread contact on most variants, so a significantly greater clamping force.
David
I am a hardware nerd. Here’s the double top lock, grade 8 flange head, and the hardened washer that’s a smidge wider than the locknut.
All together, it’s about 2x the cost of the grade 5 stuff from a big box store, but (to me) 3x better suited to these tasks.
David
All together, it’s about 2x the cost of the grade 5 stuff from a big box store, but (to me) 3x better suited to these tasks.
David
Just to clarify here, the greater clamp load on a fine thread comes from the bolt's thread minor diameter actually being larger than a same sized coarse thread bolt. The finer threads are shallower and both fine and coarse threads have the same outside diameter so the fine thread is actually larger where it counts. This lets you load the shank more creating more clamp load at the same stress level.
And the 'burb looks pretty cool too.
Well remembered. I forgot about...most of that. It’s been a long time since I referenced one of the fastener tables.
I’ll get you the number for the folks that build all these parts. They’re all right.
David
Oh man, now I'm going to find myself buying fine thread bolts....
There's the one thing I didn't know that I learned today. Thanks fellers.
Meanwhile, it’s raining, so I got a jump on the bump landing plates. They’re accidentally semi bowtie-ish.
David
David
I need some of those for my front axle
Here’s my recipe so far:
4x2 rec’ tube cut 6-3/8” long and trimmed to sit 1-3/8” tall; 1.5” hole saw applied to a 3-3/16”x4” pattern, centered.
Trim to taste, and burn.
David
jkroberts
Roberts Custom Trucks
Looks good man! Shackle angle is perfect. How much farther forward did you move the front hanger? Have you articulated it yet?
Not yet. With the front hanger set about 9” forward, I now need to lock in the spring perches and pinion angle so the axle doesn’t move around while cycling.
I’ve been waylaid by rain for two days, but that’s what’s next.
David
Now those are cool!
Spring plates with bump area. Turns out there’s not a lot of room above these, so the bump plate lost its sides. The can will clear the floor with 3/8” to spare.
David
David
If you had a dime for every dime you've laid...
Oh man, now I'm going to find myself buying fine thread bolts....
Hahaha! Isn't that what build threads are for?
I would definitely be wealthier if we counted the boogered nickels that preceded them.
Final measurement on the front mount is about 8-3/8” forward of original.
David
The drizzle was on/off today, which is not the greatest when trying to jockey a half sprung axle under this big-booty truck, but I got some good stuff done.
Pinion angle is set to within 0.1*, which is probably the error range for these digital gauges. Spring pads are heavily tacked. I’ll burn them in later when the pack is out.
Bump can simulator. 8.25” is the collapsed length.
The spring plate angle really eases up on the mounting options. There’s plenty of room.
Ready to template bump mounts tomorrow.
David
Pinion angle is set to within 0.1*, which is probably the error range for these digital gauges. Spring pads are heavily tacked. I’ll burn them in later when the pack is out.
Bump can simulator. 8.25” is the collapsed length.
The spring plate angle really eases up on the mounting options. There’s plenty of room.
Ready to template bump mounts tomorrow.
David
Started on the bump cans. CAD is super therapeutic.
David
David
