Rob Allen | Roller Gun Tips

Here are some tips about our roller guns.

[dicungDon]

Thanks Uncle Rob. I got a 90 cm Tuna Roller gun. Put a 14 mm rubber on it and double wrapped it. It shoots like a dream. I always adore your spearguns. The only brand I ever used.
I have a question, for a blue water environment (chasing tuna, wahoo etc), would you still recommend a 110 cm length still? I'm thinking of getting a 120 cm Carbon GT Roller for blue water. Thanks, Uncle Rob :-) Greetings from Australia.

[atdi]

Great tips as usual Rob, aloha and mahalos from Hawaii!

[ГеннадийЮхненко]

It's always very interesting to watch you short and helpful clips. In this video, for me interesting, how to do up bands specially for roller gun, I mean extra rope for loading. Thanks:)

[DeepBlueSpirit]

Great advice to check rubbers with a scale. So simple. Never thought about that. Thanks for sharing! ><)))*>

[BowhuntingAfrica]

I’ll be fast asleep but I’ll watch first thing in the morning 👍🏻

[Rawly]

Great video Rob, thanks!!

You say in the video that to calculate the size of the rubbers, we make half the tube + 10cm for 16mm rubbers.

Is the formula the same for 14mm rubbers?

Is it really half of the tube, or half from the head to the last notch?

I have:
Tube = 83cm
Head/Notch=92cm

you say it should have a pretension of 19/20kg for 16mm rubber,
it should have between 10/15kg for 14mm?
as I said in a previous answer in another video?

thank you very much!
Greetings from Portugal.

[cyosh]

Aloha Rob. Appreciate your informative videos. Question on roller band wishbones. What is the purpose of the two same size wishbones? Do you double them up on the notch or just hook one so the other hits muzzle and doesnt kick shaft up? Thank you 🤙🏾

[MattTitchenal]

I notice you do sell these up to 130 cm. What happens at 110 cm that makes it not worth it to go bigger? In an extreme example of a 150 cm gun, what happens that makes it not beneficial to convert to roller? Is it just too hard to load? Would a 150 cm single roller be less powerful than a double standard band? Love your gear, and thanks for making these videos.

[jt]

Hey Rob great video. Question though, I have seen guys not placing the loops at the end of the rubber around the anchor points, istead they use another length of dyneema connecting the loops and this goes around the anchor points and under the barrel. The rubbers are then half the barrel length.

Advantages/disadvantages of this and do you recommend it?

I can only think that it would make it easier and faster to adjust pre tension on the go rather than having to cut the rubbers..

Thanks for your time

[AleksPetrovProspecting]

Hey Rob, if I would like to convert my Scorpia 700 (non rail) with 6.3 mm spear to roller, what bands should I use and should I change the barrel and spear too?

[BOYSOFDAKAR]

Thank you Rob, nice and interesting video ! Do you have a study of impact spears for your tuna guns (110-140) between 2x16mn and 16m roller ? BR. JCF

[nataliciomartins]

Um dia ainda vou conseguir comprar uma Rob Allen, as melhores arbaletes que existe 🙌🙏

[markokucan]

So if I understand it right. 90cm spreargun with 16mm bands you cut at 55cm of rubber length. What about 14mm rubber band? Should I cut it at 45cm?

[rrobison]

Hey Rob, How do these guns perform New England waters?
Rob Robison

[Thebullet]

Great Video! Thank you for the info. Where could I buy/find the stainless steel band anchors? Cant find them!!!!

[jasonibrahim]

Hi Rob, I have 14mm bands and a 6.6mm spear. What pretension weight should I have?

[martincjoergensen]

Could you do a video on band choice for different purposes for your rollerguns? I have your 90 cm roller and have tried it with different bands configurations with your 6.6 mm 120 cm spear. I am hunting small and fast fish (trout) so my goal is the fastet shot with minimal drop and recoil - for fast twict instinctive shooting. Penetration is not an issue, since the biggest fish are usually 8 kg. I have tried both your 14mm and 16mm bands cut to your recommendation - half barrel length + 10 cm = 55 cm total but also shortend to 50 cm. I dont have the facilities to pooltest, but my initial impressions are that the 16mm cut to 50cm deliver the best speed with minimal drop but a little recoil, which I can handle. I would like to hear more about your testing results and your thoughts about recommendations for band choice for your great rollers. Again - thanks for the great videoes.

[martincjoergensen]

Very interesting video. You mention the impact of temperature on the rubbers. I live in Denmark and often hunt in waters around 0-8 degrees. How do cold temperatures impact the rubbers? Since things often contract when getting colder, my intuition tells me to cut the rubbers a bit longer than normal - but what do you think?

[scottalvarez]

Rob, big fan here. I have your 1200 Tuna Railgun. It comes with two bands. How does the performance compare from the stock setup to switching to the single roller?

[ruitian]

Dear Rob, my roller head seems having got some sand jammed in the ceramics bearing and when I spin the bearing, I can hear sands friction sound and not as smooth as when it was new. Any tips of how can resolve this? Thanks, Rui