Power Knobs Guide

Power Knobs Guide

Which power knob fits my reel? How to choose the right power knobs? These are some of the questions that may come to mind when you decide to change the original reel handle knob of your reel. This article will help you choose suitable reel knobs.

How to Choose The Right Power Knobs for Your Reels?

Which power knob fits my reel? How to choose the right power knobs? These are some of the questions that may come to mind when you decide to change the original reel handle knob of your reel. This article will help you choose suitable reel knobs.
 
Table of contents:

  1. Part1. Types of Gomexus power knobs
  2. Part2. How to choose the right power knobs for your reel
  3. Part3. How to replace the reel handle knobs
  4. Part4. Rattling adjustment points
  5. Part5. Summary

Part 1: Types of Gomexus Power Knobs

We classify our power knobs into 4 series, and they are power knob series A, B,C,D(L in Japan).

Gomexus Knob Series Model Number Knob Size Material

A series

K35,A38,A41,A27, CA27,CA38, EA20,EA38,EA41, S22,TA20,A30,T22, TA38,TA41,AS30,S20

20mm,22mm,27mm, 30mm,35mm,38mm,41mm

Aluminium;
Cork;
EVA;
TPE;
Titanium

B series

B45,B47,TEV85,CT100 45mm,47mm,T-bar Aluminium;
Cork;
EVA;

C series

C27 27mm Aluminium;

D/L series

D47 47mm Aluminium;

 

Checkout Gomexus Power Knobs:

 

Part 2: How to Choose the Right Power Knobs

The most straightforward way to choose your power knob is to check the fitment table. Then, you can  find the right knobs according to your reel model. Click here to check.

If you cannot find your reel model number in the product fitment table, or if you are not familiar with the reel information, continue reading the guide.

Before we start, there are 2 methods of power knob installation:

  1. direct fitment (no extra tools needed)
  2. drilling fitment(need to drill a hole when replacing your original knob).

So when you choose the knob, it is also important to judge if you need to drill or not. Now let’s get started:

Step 1:
Take out your reel, look at your original knob, and check how it’s fixed. If it’s fixed by a screw, then our knob can directly fit your reel. And if it’s fixed by a rivet, drill fitment will be needed.(shown below in the picture)
 original reel knob fixed method
Step 2:
Measure your shaft size as shown below:

 A series knobs directly fit shaft size:

a knob shaft size

series knobs directly fit shaft size:

b knob shaft size

C series knobs directly fit shaft size:

c knob shaft size

D series knobs directly fit shaft size:

d knob shaft size

For Direct Fitment:

  1. A series knobs fit reel shaft size with 4mm in diameter, 27mm or 27.5mm in length.
  2. B series knob fit reel shaft size with 5mm in diameter, 37.5mm or 46mm in length.
  3. C27 knob fits reel shaft size with 5mm in diameter, 26mm in length. If you have a Abu Garcia reel, then it will fit well.
  4. D series knob fits reel shaft size with 5mm in diameter, 36mm in length.

Power knob series

Compatible shaft size

 

Shaft Diameter

Shaft Length

A

4mm/0.157inches

27mm/1.06inches;
27.5mm/1.08inches

B

5mm/0.197inches

37.5mm/1.476inches;
46mm/1.811 inches

C27

5mm/0.197inches

26mm/1.02inches

D

5mm/0.197inches

36mm/1.42inches

Example 1: If your reel shaft size is 4mm in diameter and 27mm in length, go ahead and choose from Gomexus A series knobs. They will directly fit your reel.
Example 2: If your reel shaft size is 5mm in diameter and 37.5mm in length, go ahead and choose from Gomexus B series knobs. They will also directly fit your reel.

For Drilling Fitment:

If your reel size doesn’t fit 4mm or 5mm, then maybe you need to do drilling installation. Or we don’t have a knob which is suitable for your reel.

Gomexus Knob Series

Reel Size

Shaft Size(direct fit)

A

1000-5000

4mm in diameter,
27mm or 27.5mm in length

B

above 5000

5mm in diameter,
37.5mm or 46.0mm in length

C

-

5mm in diameter,
26mm in length

D

-

5mm in diameter,
36mm in length

Step 3:

After identifying suitable knob series for your reel,  it’s time to decide which knob size fits the best.
Read the size number printed on the body of your reel, and check the tips below:

Reel Size

Recommended Knob Size

1000

Less than 35mm

2000

35mm/38mm

3000

38 mm

4000

41mm

larger than 5000

larger than 45mm/T-bar knob

Example 1: If your reel size is 4000, choose the knobs from Gomexus power knob A series because 41mm is the best size.
Example 2: If your reel size is 6000, choose from Gomexus power knob B series because the 45mm or 47mm will fit your reel well.

Tips: 
Normally you can identify the knob size on each product model. For example, A38 comes with a 38mm knob, and TA41 comes with 41mm knob.

Checkout Gomexus Power Knobs:

Part 3: How to Replace the Handle Knob

We will explain the handle replacement method using the Shimano Type A.Follow the steps below.(installation guide video)
A38 direct fit: https://www.youtube.com/watch?v=Y37RBZOnkI0&ab_channel=GomexusFishingWorld

power knob installation steps

  1. Attach the adjustment washer and bearing to the shaft in order. (Depending on the actual situation, use an adjustment washer to adjust so that there is no rattling.)
  2. Insert the knob body into the shaft.
  3. Install another bearing and tighten the genuine screw with a screwdriver.
  4. Finally, cover with a cap and tighten.

Helpful Tip: A bushing is needed when you replace your Daiwa knob.

Checkout Gomexus Power Knobs:

Part 4: Rattling Adjustment Points

Often, there is a gap when replacing the handle knob. It can cause the knobs to rattle. If your reel knob is rattling, we advise that you check the Gomexus knobs accessories. We prepared 5 washers of different thickness for you to fill the gap and eliminate any rattling.
Change the number of washers, tighten the screws with a screwdriver, and then move the knob up and down to see how loose it is. In some cases, you can insert multiple washers. However, if too many washers are inserted, the knob rotations will be slower. Therefore, make the washers thinner or reduce the number of washers.

Summary

Now that you’ve read the standard guide that we prepared for you, you can easily choose the right power knobs for your reels.

Do you have additional questions and queries? Contact us at customerservice@gomexus.com. We are always available to address your needs and answer your questions!