Cannon 1979220 owner manual Blowback Charts

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Blowback

Blowback

Simply stated, blowback is what happens to the downrigger weight when you pull it through the water behind your boat. As your speed increases, so does the horizontal distance between the weight and your downrigger. The faster you go, the farther the weight is behind you. The farther the weight is behind you, the shallower the weight is.

The following charts provide you with blowback information for three sizes of Cannon downrigger weights pulled at three different speeds with no lures attached and with no current. Current drag, water salinity and the use of non- Cannon products will affect your actual trolling depth.

As an example, the first chart shows that if you are trolling at 4 MPH with an 8 pound weight and you have 100 FT. of cable in the water with no current; the downrigger ball is actually at a depth of about 80 FT.

Blowback Charts

 

8-Lb. Weight at 2, 4, and 6 MPH

Actual

2 MPH

4 MPH

Depth

6 MPH

of Weight (ft.)

 

 

Amount of Cable in Water (ft.)

 

10-Lb. Weight at 2, 4, and 6 MPH

 

2 MPH

ActualDepth

4 MPH

6 MPH

of Weight (ft.)

 

 

Amount of Cable in Water (ft.)

 

12-Lb. Weight at 2, 4, and 6 MPH

ActualDepth

2 MPH

6 MPH

 

4 MPH

of Weight (ft.)

 

16

Amount of Cable in Water (ft.)

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Contents MAG 20DT/HS Parts Description BoomMag 20 DT New Features CannonLink DetailsMounting Accessories Downrigger Mounting on BoatsSide Rail Mounting Pedestal MountingInstalling the Base on Your Boat Decks up to 7/16 thickDecks thicker than 7/16 Decks thinner than 1/4Mounting the Downrigger on the Base Setting Up Your DownriggerAttaching the Boom Terminating the Downrigger Cable Cannon Uni-ReleaseSingle Rod Holder Assembly Dual Rod Holder Assembly Attaching the Rod HolderWiring Your Downrigger Electrical Specifications & Wiring InstructionsConnecting to the Battery Your Boats Electrical ConditionPowering Multiple Downriggers Typical Operating TimeLowering the Weight Powered Descent One speed fits allOperating Your Downrigger Manual Descent Fast or SlowRaising the Weight Adjusting the Depth MeterShort Stop System Positive Ion Control SystemUsing Positive Ion Control Blowback Charts BlowbackTrouble Shooting SolutionTen Good Trolling Tips Consider special knots and swivels. aCannon Limited Warranty Environmental Compliance Statement