Rotary Power Train for temporal displacer
1635ZZ Bearing 3/4"x1 3/4"x1/2" inch Shielded :: Kit7775 :: 3/4" inner diameter = 0.750 inch
http://www.vxb.com/page/bearings/PROD/Kit7775
http://us.misumi-ec.com/vona2/detail/110300416620/?Inch=0&CategorySpec=00000029824%3A%3A5
Belts are made from vinyl tubing 5/16 OD-3/16 ID; ends spliced with 3/16 OD tubing and vinyl cement
Pulleys are made from MDF (Medium Density Fiberboard) ¾” thick. Grooves (“U” type) coated with epoxy
Pulley PD
5”
Pulley OD
5.5”
Pulley ID:
3.75 (fan motor hub)
OD of shaft adapter stub (rotation head)
OD of shaft adapter stub (fiberglass pole)
OD of shaft adapter stub (fiberglass pole)
Motor shaft is 0.582” OD
Motor mount 6” x 4” x ¼ steel plate with 5/8 hole for shaft (bolted and stationary)
Bearings (4) for fiberglass shaft 0.75” ID
Bearing adapters for fiberglass shaft tdb ID, 1.5” OD
Inner PVC
Outer PVC
1-1/2"
2"
2-1/2"
1.9
2.375
2.875
1.59
2.047
2.445
0.145
0.154
0.203
1.0”nom
1.32” OD
0.936” ID
(23.77mm)
”
2” nom x 80
2.375” OD
1.913” ID
0.22 Wall
2” nom x 80
2.375”
OD
1.0”nom
1.913”
ID
1.32” OD
0.22
Wall
0.936”
ID
(23.77mm)
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1635ZZ Shielded Ball Bearing is radial, deep groove ball bearing,
bearing is made of Chrome Steel with chrome steel balls and steel
cage,1635ZZ is closed with Metal Shields to protect the bearing from
dust or any possible contamination, bearing is Shielded and self
lubricated,the quality is set to EMQ (electric motor quality) to ensure
high speed,1635ZZ bearing is lubricated with grease.
Item: 1635ZZ Ball Bearing
Type: Deep Groove Radial Ball Bearing
Cage: Steel
Balls: Chrome Steel
Radial Clearance: C0
Material: Chrome Steel
Quality: Electric motor quality
Lubrication: Self Lubricated (Grease) Bearing
Closures: Double shielded with Metal shields Z/ZZ/2Z
Size: 3/4" x 1 3/4" x 1/2" inch
Inner Diameter (ID): 3/4" inch
Outer Diameter (OD): 1 3/4" inch
Width/Height/Breadth (W/H/B): 1/2" inch
Quantity: One Bearing
Equivalents: 1635-2Z and 1635Z Bearings
http://www.vxb.com/page/bearings/PROD/Kit7775
Steel Pipes Dimensions - ANSI Schedule 80
Pipe Size
(in)
1/8
¼
3/8
½
¾
1
1¼
1½
2
2½
3
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Diameter
(in)
External
Internal
0.41
0.54
0.68
0.84
1.05
1.32
1.66
1.90
2.38
2.88
3.50
0.22
0.30
0.42
0.55
0.74
0.96
1.28
1.50
1.94
2.32
2.90
Transverse Areas
(in2)
Nominal
Thickness
(in)
External Internal
Steel
0.10
0.12
0.13
0.15
0.15
0.18
0.19
0.20
0.22
0.28
0.30
0.13
0.23
0.36
0.55
0.87
1.36
2.16
2.84
4.43
6.49
9.62
0.04
0.07
0.14
0.23
0.43
0.72
1.28
1.77
2.95
4.24
6.61
2
0.09
0.16
0.22
0.32
0.43
0.64
0.88
1.07
1.48
2.25
3.02
Length of Pipe
(per sq. foot of)
External Internal
Surface Surface
(ft)
(ft)
9.43
17.75
7.07
12.65
5.66
9.03
4.55
7.00
3.64
5.15
2.90
4.00
2.30
2.99
2.01
2.54
1.61
1.97
1.33
1.65
1.09
1.32
W
Volume
(ft3/ft)
0.0003
0.0005
0.0010
0.0016
0.0030
0.0050
0.0089
0.0123
0.0205
0.0294
0.0459
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(lb/ft)
0.31
0.54
0.74
1.00
1.47
2.17
3.00
3.65
5.02
7.66
10.30
Three concentric PVC pipes
insulates shaft from wood frame.
Top “clamp” collar (Enco 3285236) is backed up by cotter pin.
Entire weight of rotor hangs from
this bearing.
Bearing sleeve cut from
Schd 40 1.5”PVC slip coupling
(final dimensions: 1.900 OD,
1.755 ID, wall 0.075, height
0.625 )
Main shaft 1018 steel ¾”,
2.5 ft length. Bearings vxb
#1635ZZ 3/4"x1 3/4"x1/2"
Total of 4 required: two for
main shaft, 2 for fiberglass
counter shaft.
Outside clamp collar 2+3/8
bore, 3.5 OD, 0.75 thick. (Enco
328-5001) One required.
Washer is 1.900” OD, 1.285”
ID
Outside clamp collar 2+3/8 bore,
3.5 OD, 0.75 thick. (Enco 3285001) One required.
This bearing experiences the
greatest radial “wobble” load.
The sleeve must be secured with
epoxy and shallow grooves or it
will work loose.
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Shaft collars ¾ bore, 1.5 OD, 0.5
thick (Enco #328-5236 ) Required
5+2
Schedule 80 PVC pipe:
2” x 12”
1.5” x 10.5”
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1.0” x 10.5”
Pulley is made from MDF then epoxy coated
and painted. Intended to slip if over-torqued.
Clamp collars hold it in place vertically.
Groove accepts 5/16 OD tubing.
Pulley facing washers are 2.85 OD,
1.52 ID and 1/8 thick.
Rod carrier is 1.5” OD, 2”
high, with ¾” bore to accept
axle. A ½” pilot bore goes all
the way through.
Counter weight (TBD)
Three Allen screws (¼-20) at
120 degrees fit in axle groove
and secure carrier to axle.
0.5
1.2
Groove is 1/8“ deep, 1/4”
wide. Accommodates ¼-20
conical screw tips.
0.5
1.5
2.0
Rod is 5/16 x 3 ft (2 ft 6” sweeps active area;
the other 6” is for a 5 lb lead balance weight).
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Rotating Electrode
(Actual size, sphere not to scale)
Upper electrode is made from two IKEA serving bowls joined to form a sphere (flats not shown). It is mounted
on a 5/16” SS smooth rod sheathed with vinyl tubing.
Rod is stainless steel, 5/16 OD,
3 ft. length
Sphere is about 8.25” in
diameter, flats not shown
nylon
tie
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Other hole passes 8-32 x ½
screw. Rod end is drilled ¾ ”
deep and tapped for 8-32 x
½” SS screw.
One hole for rod is
5/16” OD.
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Fiberglass tube and thrust bearing adapter (two required)
(Top)
Pulley 5.5 OD, 5.0 PD, ,
bore 1.5” 0.75 thick
made from MDF (two
required). Epoxy sealed
and painted.
clamp: 1.5” bore , 2.375”
OD, 9/16” thick (Enco
#328-5240) Total of 4
required for top and
bottom sets.
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(Bottom)
Optional: bore out to
reduce mass (ID about
7/8”)
reduce OD to fit ID of
fiber pole (about 1.25”)
1.5” OD x 0.5” (stock)
2.5”
reduce OD to fit OD of
bearing inner race (about
1.0”)
3.0
3.25
reduce OD to fit ID of
bearing inner race (about
0.75)
4.5
1. Lower bearing is the main thrust/radial bearing. A belt links it to the motor.
2. Upper bearings is used as a radial bearing. A belt links it to the HV rotor
Both bearing holders accommodate adjustment for belt length and are partially shielded against weather and insects.
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Plan view of cross beam and pole pulley configuration
(scale 1” = 1 ft)
Upper cross beam mounts on upper
inside edge of top frame above the
diagonal braces.
Mounts for fiberglass rod bearings are
outside the swept area of the rotor.
32.5 x 5.5
12”
12.72
”
12”
21.72 x 3.5
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Bearing Mounts for pole adapters
(actual size; shows
1. mounting plate
2. bearing holder plate (inner outline)
Bearing cap is Schd 40 2.5” PVC slip cap, bored to fit fiber
pole and rotate with it. (3.375 OD, 2.87 ID, bore 1.5 ID )
Drawing below shows three items:
1. bearing holder (circular) cut from 4 x 4 x 0.5 aluminum
flat stock.
2. Bearing holder mounting plate cut from 5.5 x 4 x 0.5
aluminum flat stock.
3. Outline of the protective cap.
4.0
2.00
0.687
5
2.70
2.87
2.75
4.81
2
5.5
mounting plate made from 5.5 x 4 x 0.5 aluminum flat stock. Dye, mark and mount in 4 jaw chuck. bore ¾ hole
shown. Make the two 3/8 slots in drill press
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2.87
2.70
1.75
1.36
10 degree bevel
0.375
0.5
Bearing mount made from 4 x 4 x 0.5 aluminum flat stock. Dye and mark circles. Center in 4 jaw chuck. Bore
and bevel as shown. Cut off excess plate material.
Coat bottom of bearing holder with epoxy, then affix to mounting plate by using a ¾” mandrel and bearing for
centering the ¾” bores. Can be further secured with roll pins.
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Motor Envelope dimensions
(1/2 scale)
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Fan motor schematic
High
Med
Low
L&1
L,2,3
L&3
YEL
PRP-BRN 76 ohm
YEL-RED 76 ohm
1
4
L
YEL
2
PNK
3
GRY
4
YEL
RED
YEL
5
PWR
WHT
BRN
main
winding
Reverse
aux
PRP
WHT
WHT
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Provisional Spark Gap
6.0”
5.0”
Mushroom drawer knobs, satin
nickel finish. Styleselections
#0231698, UPC885221000936.
Drilled and tapped for ¼-20
thread.
Max separation is about 5”.
11.8”
8.75”
Plastic standoffs and base are ¾” x
1” rectangular acetal.
1.5”
0.75”
Bottom of standoff (at left) is drilled
and tapped for two #10-24 screws.
Depth is 1.25”. Screw length 1.5”.
Base is drilled for locations and then
again for pass-thru.
0.75”
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Standoff Insulator
Standoff is made from ¾ Schedule 80 pipe, 6”
length, with 1” wood dowel plugs at ends. One end
has a #10x2” wood screw which screws into the
tower frame. Marine epoxy and an off-center pin
prevent the screw from rotating.
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