Rob Allen Rubber Bands- Blue Reactive
From: £0.26
Rob Allen comes as blue outer, amber internal rubber. It is a dipped, natural latex which is reactiveΒ and punchy.
Please add bands separately to your basket if there is more than one. Calculations can be found in the description below or please contact us to help.
This rubber is sold by the cm, if you require a 65cm band, please add 65 units. We are also able to make up the bands for you should you wish. Simply select one of the options above after reading about them below.
Want us to make your speargun band?
When ordering, please choose one of the pre-made band options using the check boxes provided. Here is a description of each option:
- Rob Allen dyneema wishbone. This is a closed loop band, common setup for RA, Riffe and Cressi spearguns. As it is a Β dyneema wishbone, it is suitable for finned or bevelled notched spears.
- Looped wishbones with removable bridle. These are perfect if you need to undo the bridle to fix it to your speargun. Guns that need this style are brands such as Pathos and Salvimar. These are made with a Dyneema wishbone and therefore suitable for finned or bevelled notched spears.
- Metal wishbone β used to replace screw in rubbers for a sharp spear notch. This is a closed loop band and such suited for branded spearguns such as RA, Riffe and Cressi.
- Roller bands are designed for your roller gun. If you have a different configuration than Rob Allen, Pathos or Salvimar roller bands, let us know and we’ll make it for you.
- Screw in rubbers– we’ll insert screw in adapters and tie them off so you can use them with your euro guns. You will need a separate wishbone, you may have one with your old bands. Or if it is unusable or you don’t have one, we would recommend this.
What length rubber do I need?
If you are not sure what length you need for your speargun please feel free to get in touch. However here are the recommended stretch factors and equations to use.
- 14mm is suitable for a stretch factor of 333%
- 16mm is suitable for a stretch factor of 320-333%
Now for the equations:
For Circular Bands
- Measure from the furthest notch/shark fin to the start of the muzzle hole
- Multiply by 2
- Divide by your stretch factor. If you would like 270%, divide by 2.7. If you would like 340%, divide by 3.4
- This number will equal number of cm needed.
For Roller Bands
We’ll make your bands to fit your specific roller, the most common set ups would be; Rob Allen, Pathos or Salvimar style bands. If you have a different configuration to these above, please let us know and we’ll make it for you!
- Measure from the furthest notch round the muzzle and back down the length of the gun to where the rubber will sit securely.
- Multiply by 2
- Divide by your stretch factor. If you would like 270%, divide by 2.7. If you would like 340%, divide by 3.4
- Multiply by 2 again
- This number will equal number of cm needed.
For Screw in Rubbers
Measure from the furthest notch to where the rubbers screw in
- Measure from the furthest notch to where the rubbers screw in.
- Multiply by 2
- Divide by your stretch factor. If you would like 270%, divide by 2.7. If you would like 340%, divide by 3.4
- This number will equal number of cm needed.
Remember that not all gun rubbers are made equally and the same is true for spears. Some spears work better when powered by a specific rubber and visa versa.
Also, be sure not to overpower your spear as this will lead to inaccuracies in your shots. Of course if you are unsure then please get in touch.
If you want Rob Allen Bands for your RA gun here are the sizes. Choose the closed circular rigging option if you would like us to make the band for you.
60cm gun: 37cm
70cm gun: 43cm
80cm gun: 49cm
90cm gun: 55cm
100cm gun: 61cm
110cm gun: 67cm
120cm gun: 73cm
Do you know why Rob Allen guns are so powerful?
The main difference that makes RA more powerful over the typical speargun is the type of latex used for their bands but its a big difference.
If you look at traditional rubber it will mostly be a block colour (often black throughout), if you look at RA rubber you will see its a natural gum colour and has rings in it like when you cut a tree in half, this is down to the way its manufactured.
Most traditional gun rubber is made via an βextrudedβ manufacturing process like squirting toothpaste out of a tube.Β The thickness is dictated by the size of the hole.Β This is much cheaper to make in comparison and the quality suffers because of all the additives needed to cure it so quickly.
Extruded rubber is about 30% cheaper on average but has poor notch toughness and loses its elasticity at a faster rate.
By comparison RA latex is made via a dipping process like how you make candles. The latex is repeatedly dipped until the correct thickness is achieved.Β For this process you can only use 100% pure natural latex (tree sap).Β This is why its always gum coloured.Β The blue outer colour is a UV protector to prolong the bands life.
The best elasticity comes from pure latex. The purer it is the better, the more additives needed the worse it becomes.
RA bands are made with the purest latex, this does make it expensive though β but do you buy a fantastic gun and then fit cheap rubber?
RA have tested most manufacturers from around the world and only use what they have found to be the best. When loaded and held at a specific stretch, all rubbers lose their elasticity to some degree, some more than others. Poor rubber can lose as much as 30% over 1 hour.
A fun fact that not many people know : )
If you need any assistance, please email enquiries@spearfishing.co.uk.
| Brand | |
|---|---|
| Diameter | 14mm, 16mm, 18mm |
| Rubber Manufacturing Style | |
| Rubber reactivity |
Rob Allen speargun rubber (sold by the cm)
| Brand | |
|---|---|
| Thickness | 14mm, 16mm, 18mm |
| Colour | Blue |
Band Rigging Service- Roller Bands
| Band Style | Rob Allen Roller Band, Salvimar Roller Band, Pathos Roller Band |
|---|
Band Rigging Service- Screw in Rubbers
| Thread material | Inox, Plastic screw with Inox tip |
|---|---|
| Band Style | Screw in Rubber (4 Screw Threads), Circular (2 screw threads) |
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