Double Bell SR25 review.

[Greendore]

Hello all, this is my first post here and I thought I would share my new AEG turned DMR, the Double Bell SR25 (this one) 

I haven't really seen any reviews or videos on their SR25 so I thought I would share my thoughts on what I like and don't. 

First off the build quality. Surprisingly pretty good for how much the gun cost. Everything feels sturdy and well made, no wobble and a comfortable pistol grip. The only thing that felt SUPER cheap and got instantly replaced was the solid stock. It felt way to fragile, one drop or hard knock and it could shatter kind of fragile. Another bad point is the stock motor, I fired the gun 4 times through my chrono for a stock reading and the gearbox locked up. Now this could of been due to the fact that the gun is locked to semi-only by bespoke with the selector plate but it didn't matter as the gearbox was going to be opened anyway.

 

The gun has a quick spring change like the Cyma platinum series.

 

Just removed the stock and twist the spring guide until it pops out, simple!

 

 

 

 

 

Internally it has a V2.5 SRS gearbox which is a bonus! 

It has standard ok gears which I replaced, the nozzle was metal with an o-ring and the piston had steel rack teeth with a decent bearing head, the cylinder was ported which I also replaced along with the cylinder head. The air seal however from stock was REALLY good. So far impressed.

My piston had the 19 teeth but it was exactly like the picture above. 

 

Now some issues, I had to send the gun to a local tech as It was causing a massive head ache, it turns out the stock cylinder is smaller then the replacement non-ported SR25 cylinders.

 

Double Bell SR-25 Cylinder

 

SHS SR25 Non-Ported Cylinder

With a bit of modification he got the cylinder in with the gearbox closed. 

 

 

The Front of the gun you have a 420mm brass 6.02 inner barrel (the websites say 500mm, well its not) and a rotary hop up chamber, it felt a bit cheap so I replaced it.

 

 

 

New parts inside of the gun.

 

SHS SR25 Gears with perfect shimming.

SHS Non-ported Cylinder

SHS V2 Cylinder head

Perun AB++ mosfet

XT 22TA high torque motor

XT M130 spring

Stock piston

Stock nozzle

ZCI Rotary hop up chamber

Maple Leaf 6.02 410mm inner barrel

Maple Leaf MR Hop 70

Maple Leaf Omega nub

I'm using a 9.9v LIFE battery.

 

I replaced the cheap feeling hollow stock with a Cyma SR-25 solid stock, it only needed to be slightly shaved on the bottom of the stock to fit. 

 

The finished product. I'm using 0.32's and I'm getting 341-343 fps. Perfect for my site!

I'm pretty happy with the build, I'll be using it for the first time this Sunday hopefully with no cock ups! 

Edited November 8, 2023 by Greendore

[mirinjawbro]

total cost ?

[1st commando]

Nice little review but it should really be in the review section

[Greendore]

My bad! If an admin could move it there that would be great! 

[EDcase]

Interesting.  Should get moved to right place.

 

The gearbox locking up is often a symptom of a weak battery.

The original ported cylinder would be better as the port allows for more acceleration of the piston.  It should only be changed to non ported if the volume is not sufficient for the barrel length (which it shouldn't be)

[The_Lord_Poncho]

Great looking shooter! I have a cyma SR25, and its a heavy beast - maybe the Double Bell is lighter? The cyma stock is indeed good, albeit i frequently seem to get batteries stuck inside it, they are a pain to get out. I need to really devise some kind of solution.

 

If you continue to have lock up issues that you can't solve without flicking to full auto, I managed to semi lock the cyma SR25 with a couple of suitably sized washers on the rear receiver pin - in between the receiver and the gearbox. Quite quickly reversible - certainly without stripping the gearbox down. Albeit I suspect if you want to take advantage of that, you would need to replace your modified selector plate. I presume it works also in the double bell, but not tried!

[Greendore]

On 08/11/2023 at 18:09, EDcase said:

Interesting.  Should get moved to right place.

 

The gearbox locking up is often a symptom of a weak battery.

The original ported cylinder would be better as the port allows for more acceleration of the piston.  It should only be changed to non ported if the volume is not sufficient for the barrel length (which it shouldn't be)

I read up that any inner barrel 400m+ should have a non ported cylinder, I am tempted one day to buy a longer inner barrel to go into a suppressor so the non ported cylinder will come on handy.

2 hours ago, The_Lord_Poncho said:

Great looking shooter! I have a cyma SR25, and its a heavy beast - maybe the Double Bell is lighter? The cyma stock is indeed good, albeit i frequently seem to get batteries stuck inside it, they are a pain to get out. I need to really devise some kind of solution.

 

If you continue to have lock up issues that you can't solve without flicking to full auto, I managed to semi lock the cyma SR25 with a couple of suitably sized washers on the rear receiver pin - in between the receiver and the gearbox. Quite quickly reversible - certainly without stripping the gearbox down. Albeit I suspect if you want to take advantage of that, you would need to replace your modified selector plate. I presume it works also in the double bell, but not tried!

Ever since the upgrades and the new motor I haven't had 1 lock up :) I agree the cyma stock is a pain with battery's getting stuck! I have to keep removing the adjustable bit and the button/spring so I can fully fit and remove batteries from the stock

On 08/11/2023 at 09:40, mirinjawbro said:

total cost ?

£220 for the gun

£25 inner barrel

£32 motor

£40 mosfet

£45 for gears cylinder and head and shims 

£10 hop up chamber 

 

Total £372