Difficulty:★★★☆☆
Inside Umbrella — 3rd Rail Arrival = 1st Short Rail + 2nd Long Rail
Family 6 · Ticky · Umbrella & HookInside & Outside Umbrella System
Inside Umbrella
Presets:
Steps:
Club Terms:Inside UmbrellaDù trongĐánh dù thuậnBung dù· Cut OB1 to the short rail, open to the long rail, and flare out like an umbrella to OB2.
3-Second FormulaDiamond System
Inside Umbrella: Short Rail 20 → Long Rail 30 → Open to 50
Hit short cushion first to flare out across both long cushions.
Cue Tip
2h30 · 3 tips
2:30 running · 3 tips
Thickness
4/8 ball
Half-ball (4/8)
Stroke
Speed 3/5
Smooth follow
Table CompensationWatch kiss risk
OB1 crosses table; use 3/8 or 5/8 thickness to clear.· Apply base formula
3rd Rail Arrival · Tap cell to drawShort Rail Hit × Spin Expansion Factor
| Short Rail Hit | 1.5 | 2 | 2.5 |
|---|---|---|---|
| 10 | |||
| 15 | |||
| 20 | |||
| 25 |
How to play it
Quick Recognition (Inside Umbrella)
Cut OB1 to the short rail, open to the long rail, and flare out like an umbrella to OB2.
3-Second Key Points
- Formula: 3rd Rail Arrival = 1st Short Rail + 2nd Long Rail.
- Table Rule: Hit short cushion first to flare out across both long cushions.
- Parameters: Tip 2:30 running · 3 tips · Thickness Half-ball (4/8) · Stroke Smooth follow.
- Kiss Control: OB1 crosses table; use 3/8 or 5/8 thickness to clear.
Table Condition Compensations
- Standard: Apply base formula
- Fast Cloth: Slide longer; aim −4 units
- Slow Cloth: Wider bounce; add +5 units
- Firm Speed: Firm speed delays spin; −3 units
System formula
Đích Băng 3 = Điểm chạm Băng ngắn × Hệ số mở (1.5..2.5)
Calculates 2nd and 3rd rail expansion when the cue ball hits the short rail first and flares out.