Tech-dat/acturator-dat/motor-dat/motor-waterproof-dat/2025-12-06-13-57-31.png
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Tech-dat/acturator-dat/motor-dat/motor-waterproof-dat/motor-waterproof-dat.md
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@@ -7,6 +7,11 @@ You place the motor *outside the water* by sealing it in a waterproof enclosure.
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8 8
- [[waterproof-container-dat]]
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+
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+
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+
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+![](2025-12-06-13-57-31.png)
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+
10 15
### Requirements:
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- A sealed plastic/metal container (PVC tube, acrylic box, aluminum canister)
12 17
- Rubber O-rings
Tech-dat/acturator-dat/propeller-dat/propeller-dat.md
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@@ -4,6 +4,7 @@
4 4
- [[RC-kits-dat]]
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6 6
7
+- [[pump-dat]] - [[pump-jet-dat]] - [[propeller-dat]]
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8 9
9 10
## 共轴双桨
Tech-dat/acturator-dat/pump-dat/pump-dat.md
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@@ -1,6 +1,7 @@
1 1
2 2
# pump-dat
3 3
4
+- [[pump-dat]] - [[pump-jet-dat]] - [[propeller-dat]]
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5 6
6 7
## tech
Tech-dat/acturator-dat/pump-dat/pump-jet-dat/2025-12-06-13-48-35.png
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Tech-dat/acturator-dat/pump-dat/pump-jet-dat/pump-jet-dat.md
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@@ -0,0 +1,57 @@
1
+
2
+# pump-jet-dat
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+
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+
5
+
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+
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+
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+
9
+## 1. Fully Submerged Jet Pump
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+- A jet pump’s **impeller and inlet** can be fully underwater.
11
+- Often used in **RC boats, small submarines, or pump systems** where the pump is submerged in a tank or body of water.
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+- The **motor itself** may or may not be underwater depending on design:
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+ - **Waterproof motor / sealed housing:** Required if the motor is submerged.
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+ - **Above-water motor:** Only the impeller/water intake is submerged (common in shallow-water RC boats).
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+
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+
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+
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+
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+
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+## Definition
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+A **jet pump** is a type of pump that uses a **high-speed jet of fluid** (usually water or steam) to **entrain and move another fluid**.
22
+It has **no moving parts in the pumping chamber itself**; the energy comes from a motive fluid.
23
+
24
+---
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+
26
+## How It Works
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+1. A high-pressure fluid (motive fluid) is ejected through a **nozzle**, creating a high-velocity jet.
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+2. The jet creates a **low-pressure zone** (suction) that draws in the surrounding fluid.
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+3. The mixed fluid enters a **diffuser** or mixing chamber where velocity is converted into pressure.
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+4. The combined fluid exits the pump at a higher flow rate.
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+
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+**Diagram Concept (simplified):**
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+
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+Motive fluid → Nozzle → Suction fluid drawn in → Mixing chamber → Outlet
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+
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+## Features
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+- No moving parts in the main pump (simple and reliable).
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+- Can pump liquids, gases, or even slurries.
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+- Can lift water from deep wells or create suction in fluid systems.
40
+
41
+---
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+
43
+## Applications
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+- Water wells (deep well jet pumps)
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+- Marine bilge pumping
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+- Boiler feed systems
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+- Chemical and industrial processes
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+
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+
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+
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+![](2025-12-06-13-48-35.png)
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+
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+
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+
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+## ref
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+
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+- [[pump]] - [[pump-jet]]
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\ No newline at end of file
app-dat/RC-apps-dat/RC-apps-dat.md
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@@ -13,7 +13,7 @@
13 13
14 14
- [[RC-kits-dat]]
15 15
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-- [[rc-marine-vehicle-dat]] - [[ROV-dat]] - [[rc-boat-dat]]
16
+- [[rc-marine-vehicle-dat]] - [[ROV-dat]] - [[rc-boat-dat]] - [[rc-submersible-dat]] - [[rc-submersible-tank-dat]]
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18 18
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app-dat/RC-apps-dat/rc-Marine-vehicle-dat/rc-boat-dat/2025-12-06-13-55-25.png
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app-dat/RC-apps-dat/rc-Marine-vehicle-dat/rc-boat-dat/rc-boat-accessories-dat/2025-12-06-13-40-01.png
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app-dat/RC-apps-dat/rc-Marine-vehicle-dat/rc-boat-dat/rc-boat-accessories-dat/rc-boat-accessories-dat.md
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@@ -0,0 +1,18 @@
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+
2
+# rc-boat-accessories-dat
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+
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+- [[ESC-waterproof-dat]]
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+
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+
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+
8
+- [[rod-tie-dat]] - [[rod-system-dat]]
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+
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+## propeller assembly
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+
12
+with oil filler
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+
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+![](2025-12-06-13-40-01.png)
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+
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+## ref
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+
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+- [[rc-boat]] - [[rc-boat-accessories]] - [[rc-boat-accessories-dat]]
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\ No newline at end of file
app-dat/RC-apps-dat/rc-Marine-vehicle-dat/rc-boat-dat/rc-boat-dat.md
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@@ -1,11 +1,42 @@
1 1
2 2
# rc-boat-dat
3 3
4
+- [[rc-boat-accessories-dat]]
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+
6
+- [[pump-dat]] - [[pump-jet-dat]] - [[propeller-dat]]
7
+
8
+- [[motor-waterproof-dat]] - [[motor-dat]]
9
+
10
+
11
+
12
+
13
+## jet pump vs propeller
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+
15
+| Feature | Jet Pump | Propeller |
16
+|---------------------|---------------------------|---------------------------|
17
+| Safety | High (no exposed blades) | Low (blades exposed) |
18
+| Shallow water use | Excellent | Poor |
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+| Efficiency | Lower | Higher |
20
+| Top Speed | Moderate | Higher |
21
+| Maintenance | Moderate | Easy |
22
+| Debris handling | Better | Worse |
23
+| Low-speed thrust | Weaker | Stronger |
24
+
25
+**Conclusion:**
26
+- **Jet pump:** Safer and better for shallow water, maneuverability, and RC boats running in ponds/lakes.
27
+- **Propeller:** Better for speed, efficiency, and simpler builds, especially in deeper water.
28
+
29
+
30
+
31
+![](2025-12-06-13-55-25.png)
32
+
33
+
4 34
## propeller setup
5 35
6 36
- [[propeller-dat]]
7 37
8 38
39
+
9 40
![](2025-12-04-00-14-33.png)
10 41
11 42
![](2025-12-04-00-17-02.png)
app-dat/app-dat.md
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@@ -2,6 +2,7 @@
2 2
3 3
- [[tech-dat]]
4 4
5
+- [[rc-apps-dat]]
5 6
6 7
## Power
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mechanics-dat/mechanical-parts-dat/hinge-dat/hinge-dat.md
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@@ -2,6 +2,9 @@
2 2
# hinge-dat
3 3
4 4
5
+- [[rod-system-dat]] - [[hinge-dat]] - [[rod-tie-dat]]
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+
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+
5 8
## info
6 9
7 10
![](2025-12-04-00-48-46.png)
mechanics-dat/mechanical-structure-dat/rod-system-dat/rod-system-dat.md
... ...
@@ -11,7 +11,7 @@
11 11
12 12
- [[stainless-steel-hallow-tube-dat]]
13 13
14
-
14
+- [[rod-system-dat]] - [[hinge-dat]] - [[rod-tie-dat]]
15 15
16 16
## size
17 17
mechanics-dat/mechanical-structure-dat/rod-system-dat/rod-tie-dat/2025-12-06-13-44-22.png
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mechanics-dat/mechanical-structure-dat/rod-system-dat/rod-tie-dat/rod-tie-dat.md
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@@ -0,0 +1,27 @@
1
+
2
+# rod-tie-dat
3
+
4
+- [[hinge-dat]]
5
+
6
+![](2025-12-06-13-44-22.png)
7
+
8
+
9
+
10
+## Tie Rod vs Hinge
11
+
12
+| Feature | Tie Rod | Hinge |
13
+|-------------------------|--------------------------------------|----------------------------------------|
14
+| **Function** | Transmits **tensile force** (pulling). | Allows **rotational movement** around a fixed axis. |
15
+| **Load Type** | Works under **tension**, rarely compression. | Works under **rotation**, may carry vertical/horizontal loads depending on design. |
16
+| **Movement Allowed** | Linear connection; **no rotation** at ends unless designed with joints. | Rotational; **connects two parts allowing pivoting**. |
17
+| **Typical Applications**| Structural reinforcement, suspension, kinematic linkages. | Doors, lids, flaps, robotic joints, mechanical linkages. |
18
+| **Example** | Car suspension tie rod, truss tie rod. | Door hinge, laptop hinge, robot elbow hinge. |
19
+
20
+### Key Difference
21
+- **Tie Rod:** Keeps parts **aligned and under tension**, preventing separation or spreading.
22
+- **Hinge:** **Connects two parts and allows rotation**, does not resist tension in a straight line.
23
+
24
+
25
+## ref
26
+
27
+- [[rod-system-dat]] - [[hinge-dat]] - [[rod-tie-dat]]
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\ No newline at end of file