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Pulley Wheel Set: Ten Grooved Hardwood Pulleys Turned in Graded Sizes
A pulley is a wheel on a shaft with a groove round its rim that keeps the cord or belt in place (Wikipedia, Pulley). This set is ten hardwood pulleys from 30 to 75 mm, each bored for an 8 mm dowel shaft, so any two can be keyed to one shaft for experiments such as the differential pulley. Sizes and method are ours.
The picture: our drawing.
Kati
1 day
Maagizo
1
1
Cut the blanks
Cut the blanks
Cut ten round blanks from 18 mm hardwood with hole saws, from 30 to 75 mm in steps of 5 mm, each a few millimetres oversize.
Vifaa kwa hatua hii:
Ubao wa Mti Mgumu1 kipandeZana zinazohitajika:
Seti ya misumeno ya duara
Kekee cha Nguzo
Miwani ya usalama2
2
Bore the shaft hole
Bore the shaft hole
Bore each centre 8 mm, square to the face, for the dowel shaft.
Zana zinazohitajika:
Kekee cha Nguzo
Seti ya vichimbuzi
Kipima-unene cha dijitali cha inchi 63
3
Turn rim and groove
Turn rim and groove
Mount each blank on the lathe, turn the rim true to its size, and cut a groove round it between two flanges, about as wide as the cord. Measure each finished diameter at the bottom of the groove and write it on the face.
Zana zinazohitajika:
Kerezo cha mbao
Sahani ya uso ya lathe
Patasi ya kugeuza
Patasi ya kukata kaziKipima-unene cha dijitali cha inchi 6Miwani ya usalama4
4
Key hole and finish
Key hole and finish
Drill a small hole through the hub of each pulley beside the shaft hole for a pin, so two pulleys can be pinned together to turn as one. Sand and oil them.
Vifaa kwa hatua hii:
Mafuta ya Kitani20 mlZana zinazohitajika:
Kekee cha NguzoSeti ya vichimbuzi
Mkusanyo wa sandarusi
Matambara ya pambaVifaa
2- 1 kipandeKishikilia Nafasi
- 20 mlKishikilia Nafasi
Zana Zinazohitajika
11- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
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