- Joined
- May 4, 2015
- Messages
- 3,583
YUPP the 1926 wow , I wasn't crazy I did remember it right. Thanks so cool and my thieving niece and bumb husband stole mine.
Dear Bruce: Would you be interested in a set of 3d files of each of the erector set parts. I have been drawing each part out in Soildworks so that I can redraw the more complex models that are hard to build using the old manuels, or has some else done this type of project. Tim KingOn to the cranks and the stop collars. Gilbert included a part# P24 crank in Erector sets. I have lots of them in my inventory of parts, so used nice originals to make the cranks. The ‘ED’ hoist has wooden knobs on the cranks which are held in place by peening over the end of the crank to capture a washer and the knob on the crank handle.
Started with the knobs. Turned a dowel down to the correct diameter. Then center drilled and drilled a hole for the crank handle. Next, a countersink was put in the end with an end mill. Used a grooving tool (MGMN 200) to cut some grooves (to match the original design) into the knob and parted.
Then to the drill press to put a countersink on the end of the crank handle. It’s a lot easier to peen the end of the crank when it’s at a knife edge. Used a drill bushing set over the crank handle to hold the drill bit on center. Then mounted the P24 crank in a jeweler’s vise, supported the back of the handle with a punch, and dropped on the knob and washer. Peened the end of the crank with a punch and hammer.
The ‘ED’ uses a number of stop collars which are Erector set part# ‘BH’. These are 5/16” diameter brass with an 11/64” hole through the middle, and a 6-32 tapped hole on the side. I used the same drill bushings that were used to make the hubs for the drums.
Last part made was the 1/16” diameter music wire friction brake. This was bent on the hoist with the drum in place. That gives a pattern for bending more using one of the brake drums as a pattern for the curved portion of the wire.
Time for the final assembly; just a matter of feeding parts on the axles, tightening set screws and adjusting the position of parts on the axles. You can see from a couple of the photos how the upper crank can move side to side to engage either just the upper drum or simultaneously engage both the upper and lower drums. Another part ready for an Erector set show in your neighborhood!
Bruce
View attachment 236487 View attachment 236488 View attachment 236489 View attachment 236490 View attachment 236491 View attachment 236492 View attachment 236493 View attachment 236494 View attachment 236495 View attachment 236496