It appears to me that they press ball bearings onto the axle ends then the truck simply drops onto them and the lower bar retains them?Andrew Pugh wrote: ↑Fri Jul 15, 2022 11:46 am That style of retaining the bearings can’t be good for bearing life, but it may not reduce it enough to matter. Neat to see some of the big stuff!
-AP
Search found 1728 matches
- Fri Jul 15, 2022 8:37 pm
- Forum: Grand Scale Railroading
- Topic: Visiting the WF&P in St. Louis
- Replies: 29
- Views: 18648
Re: Visiting the WF&P in St. Louis
- Fri Jul 15, 2022 8:15 pm
- Forum: Grand Scale Railroading
- Topic: 12” gauge DRGW Inspired RR
- Replies: 148
- Views: 114388
Re: 12” gauge DRGW Inspired RR
I ended up drawing a section of a wheel set on the rails to see where the contact patch ended up and how it centers. Things change a lot with small changes to the radiuses and angles . The flange root radius is generally equal or larger to the radius on the rail head. As the wheel set moves side to ...
- Fri Jul 15, 2022 1:52 am
- Forum: Grand Scale Railroading
- Topic: 12” gauge DRGW Inspired RR
- Replies: 148
- Views: 114388
Re: 12” gauge DRGW Inspired RR
Your take up bearings should have specs available for thrust loads, I believe it’s typically around 20% of the load rating. We have some fairly large flange bearings in our rotoblaster that endure side loads just fine, it’s just important that you transfer punch the set screw holes and drill dimples...
- Wed Jul 13, 2022 3:27 pm
- Forum: Grand Scale Railroading
- Topic: 12” gauge DRGW Inspired RR
- Replies: 148
- Views: 114388
Re: 12” gauge DRGW Inspired RR
Curtis, the inner races of the flange bearings have set screws in them. Drill some dimples in the axles and set them with loctite they aren’t going to go anywhere. I used stressproof steel for my axles, it’s a medium carbon material with a good balance of strength and workability. 4140 is not needed...
- Mon Jul 11, 2022 11:20 pm
- Forum: Grand Scale Railroading
- Topic: Grand Scale Freight Yard Aspirations
- Replies: 16
- Views: 11573
Re: Grand Scale Freight Yard Aspirations
That’s a huge yard!
I admit to having spent too much time looking at them on google earth lol
The only caveat, is that you’ll find you’ll run out of real estate rather quickly in grand scale when building a yard, if not run out of $$$ first.
I admit to having spent too much time looking at them on google earth lol
The only caveat, is that you’ll find you’ll run out of real estate rather quickly in grand scale when building a yard, if not run out of $$$ first.
- Mon Jul 11, 2022 11:07 pm
- Forum: Grand Scale Railroading
- Topic: 12” gauge DRGW Inspired RR
- Replies: 148
- Views: 114388
Re: 12” gauge DRGW Inspired RR
To add to the above, I am using 12-1/8 for my gage, 12-1/4” maximum between the rails. Using the groovy track method so movement isn’t really an issue. With all the above, the riding car traverses the curve of my turnout 40’ radius very nicely and stays centered between the rails, the flange angles ...
- Mon Jul 11, 2022 11:00 pm
- Forum: Grand Scale Railroading
- Topic: 12” gauge DRGW Inspired RR
- Replies: 148
- Views: 114388
Re: 12” gauge DRGW Inspired RR
I’m using WP&F’s numbers for the most part, except I am using 1” thick plate blanks for my wheels. I turn a 5/16” wide 1/4” high flange on each wheel, then press them onto the axles such that the flanges measure 12.00” across the pair. Then I spin them between centers and turn a 2-5/6* angle on ...
- Sat Jul 09, 2022 10:54 am
- Forum: Riding Scale Railroading
- Topic: RRS GP-40 8 hp Kohler problem
- Replies: 11
- Views: 5743
Re: RRS GP-40 8 hp Kohler problem
I’d guess it’s the needle and seat in the carb, as this would allow any fuel below the shut off to gravity feed into the intake and engine. If it does have a fuel pump these are typically pulse operated from a vacuum line and don’t pose a problem for over fueling while sitting. Lastly the fuel tank ...
- Sat Jul 09, 2022 12:27 am
- Forum: Live Steam
- Topic: Check those trailer tires....
- Replies: 23
- Views: 7818
Re: Check those trailer tires....
... take 2 spares with me ... ++1 vote for this advice--if you have a two axle trailer, take two spares --I've had one tire fail and the flailing tread wiped out the stem of the other good one, resulting in two flats! Indeed, just happened to my uncle, piece of the front tire wedged in between the ...
- Sat Jul 09, 2022 12:24 am
- Forum: Live Steam
- Topic: Check those trailer tires....
- Replies: 23
- Views: 7818
Re: Check those trailer tires....
We had a chat about truck tires on trailers last year. Check post #26 here: http://www.chaski.org/homemachinist/viewtopic.php?f=8&t=110351&p=435768&hilit=trailer+tires#p435768 Page 2 of that post, yes. LT tires of the proper weight rating will serve you much better. Car and light truck ...
- Thu Jul 07, 2022 11:51 pm
- Forum: Grand Scale Railroading
- Topic: 12” gauge DRGW Inspired RR
- Replies: 148
- Views: 114388
Re: 12” gauge DRGW Inspired RR
My 2” scale stuff was supposed to run on 9.x inch track gage ( not modeling narrow gage). I opted for 12” for stability as I’ll be hauling Bulkhead flats full of firewood. By using the laser cut plate truck sides which are thinner than the prototypical castings, my trucks are very close to scale wid...
- Wed Jun 15, 2022 11:45 pm
- Forum: Riding Scale Railroading
- Topic: Hydraulic control
- Replies: 22
- Views: 12891
Re: Hydraulic control
It is a learning curve. The first time I drove a mini excavator I was very jerky on the controls and it jumped around alot. You learn to ease into it, by listening to the whine as the hydraulics start to move. Lengthened control handles will also help. I think all this combined with adding throttle ...