A center bench riding car
Posted: Tue Jun 12, 2018 9:29 pm
Needing another riding car for the Triennial, I pulled out the article in the Nov/Dec 2001 Live Steam about the center bench cars used at the British Columbia Society of Model Engineers. These all-wood, drop-center cars looked to be well designed and easy to make.
Putting the bottom line first, if the ones offered by SPSteam2491 here: http://www.chaski.org/homemachinist/vie ... 0&t=106731 had been available when I started, I would have bought one. If your time is worth something, seriously consider these. Making accurate cuts on full-size sheets of plywood is time consuming and not fun. And the fact that error is cumulative makes that even harder. A sixteenth of an inch off at one end of the sheet will come back to bite you when it’s all put together.
I made a couple of modifications to the design. The BCSME design uses an all-wood frame but I prefer a steel center beam, and I increased the ground clearance to 1 ¾ inch. I also raised the seat board a little higher, and my car is only seven feet long while theirs is eight feet. I added two hand holes in each end to make it easy to re-rail.
The finished car weighs about 150 lbs. including trucks.
I didn’t get photos of every phase but here are some snaps of the progress.
Here’s the 1x2 rectangular tube frame set up on the shop-made trucks.
The side and bottom pieces cut from birch plywood. I got my plywood from a specialty yard that supplies cabinet makers and got better wood at a lower price than what’s available at the big box stores. Always ask for a discount. This yard gives its best price to the local woodworkers’ club. And I’ve found that Home Depot and Lowes will give a veteran’s discount.
The two side pieces are reinforced with 2x2 and glued and screwed together.
Here’s the steel backbone in place with the two end floor pieces.
Putting the bottom line first, if the ones offered by SPSteam2491 here: http://www.chaski.org/homemachinist/vie ... 0&t=106731 had been available when I started, I would have bought one. If your time is worth something, seriously consider these. Making accurate cuts on full-size sheets of plywood is time consuming and not fun. And the fact that error is cumulative makes that even harder. A sixteenth of an inch off at one end of the sheet will come back to bite you when it’s all put together.
I made a couple of modifications to the design. The BCSME design uses an all-wood frame but I prefer a steel center beam, and I increased the ground clearance to 1 ¾ inch. I also raised the seat board a little higher, and my car is only seven feet long while theirs is eight feet. I added two hand holes in each end to make it easy to re-rail.
The finished car weighs about 150 lbs. including trucks.
I didn’t get photos of every phase but here are some snaps of the progress.
Here’s the 1x2 rectangular tube frame set up on the shop-made trucks.
The side and bottom pieces cut from birch plywood. I got my plywood from a specialty yard that supplies cabinet makers and got better wood at a lower price than what’s available at the big box stores. Always ask for a discount. This yard gives its best price to the local woodworkers’ club. And I’ve found that Home Depot and Lowes will give a veteran’s discount.
The two side pieces are reinforced with 2x2 and glued and screwed together.
Here’s the steel backbone in place with the two end floor pieces.