Double Eagle M908B

[Rogerborg]

hahah yeah but a battery is a battery at the end of the day surely they cant have messed that up.

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Nuprol though.

Batteries can be shipped with random amounts of charge, and it could have spent weeks or months in a crate or languishing on a shelf.  I recently discovered that my B6 charger likes 3.8V per cell as a storage charge, which is above their nominal 3.7V per cell rating but actually only represents 40% of capacity.  Then it'll self discharge down from there.

So I'd always charge a battery before first use, and if you also have a Nuprol charger as well, that's at your own risk.  I binned my cheap lipo charger off long since and would recommend a SkyRC S65 or better these days.

yeah im going to ring them on moday morning and find out the crack about getting it back and getting the right one delivered

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I'd be friendly and constructive about it, mistakes happen and they'll want to sort you out.

. and yeah it is back away in the box now not opening it again i was like a kid at christmas so opened it and connected a batter to make sure it wasnt faulty then was like hang on and gave it a little flick and realised it was the plastic body one when i ordered the full metal on haha.

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Perfectly understandable, just don't tell PatrolBase that.  It's not a huge deal, they generally test-fire and chrono guns themselves anyway (or at least used to), so it's not like it came to you completely unfired.

yeah they have multiple options from what i read on there return policy information so hopefully get it sorted and the right one back to me straight away as i paid for next day delivery to be able to play tomorrow but thats not happening anymore.

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Aw, that's understandably frustrating.  Best of luck with a speedy resolution.

 

[JakeF]

Nuprol though.

Batteries can be shipped with random amounts of charge, and it could have spent weeks or months in a crate or languishing on a shelf.  I recently discovered that my B6 charger likes 3.8V per cell as a storage charge, which is above their nominal 3.7V per cell rating but actually only represents 40% of capacity.  Then it'll self discharge down from there.

So I'd always charge a battery before first use, and if you also have a Nuprol charger as well, that's at your own risk.  I binned my cheap lipo charger off long since and would recommend a SkyRC S65 or better these days.

I'd be friendly and constructive about it, mistakes happen and they'll want to sort you out.

Perfectly understandable, just don't tell PatrolBase that.  It's not a huge deal, they generally test-fire and chrono guns themselves anyway (or at least used to), so it's not like it came to you completely unfired.

Aw, that's understandably frustrating.  Best of luck with a speedy resolution.

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Yeah i have an asg smart charger that turns off when full and stuff like that so hopefully thats alright. yeah will be gettoing fully charged when i need to use it next weekend. yeah 100% friendly first no point in shouting as soon as they answer doesnt get me anywhere. They must have test fired it as there was a single BB in the mag. hopefully sorted for next weekend like i say i just want to use my new gear haha

 

[Fatboy40]

Also When i recieved the M904a i tried it with the battery i ordered aswell which is a nuprol 7.4 lipo and in full auto it sounded pretty slow i dunno wheather this is possibly not a full battery charge i dunno how much they come with new or thats just the rate of fir in the DE's? Or on the other hand if i should be running a 11.1. Ive seen people on the forums running the 904's on 11.1 but patrol base only recomend 7.4 with the m908b unless shooting over 390 FPS. does this matter what do people recomend??

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The Rate of Fire (RoF) will be slower with a 7.4v LiPo, and personally I only ever play with 11.1v LiPo's in my M904E and it's never skipped a beat (my FPS is around 340 on 2.0g bb's). I can only use auto at one site I go to and on a 11.1v the RoF is more than good enough to lay a hail of plastic down.

My only battery problem is that my capacity is too low on those I have, but I bought a 3,000 mAh Titan LiIo today at the site shop so fingers crossed this will be a beast.

 

[JakeF]

The Rate of Fire (RoF) will be slower with a 7.4v LiPo, and personally I only ever play with 11.1v LiPo's in my M904E and it's never skipped a beat (my FPS is around 340 on 2.0g bb's). I can only use auto at one site I go to and on a 11.1v the RoF is more than good enough to lay a hail of plastic down.

My only battery problem is that my capacity is too low on those I have, but I bought a 3,000 mAh Titan LiIo today at the site shop so fingers crossed this will be a beast.

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Yeah i know it would be better on a 11.1 just patrol base website said they recomend a 7.4 unless shooting over 390 FPS but if you and others have had a good experience with an 11.1 then think ill invest in one. Just didnt want to damage the gearox if it couldnt handle it.

 

[RostokMcSpoons]

Don't underestimate 'reliability' as a thing... Having had game days spoiled by guns failing chrono, or not working properly, if you have just the one gun you need it to work.

Now I'm not saying the 11.1v battery will cause you problems, but if the gun fails on you, you will suspect or blame the battery, and you'll be kicking yourself for using it, because at that point you'd take a gun firing 'slowly' over one not firing at all!

Having said that, I'm sure I'll send up buying an 11.1v eventually.  But I have two other rifles and a pistol in my collection as backup ?

 

[JakeF]

Don't underestimate 'reliability' as a thing... Having had game days spoiled by guns failing chrono, or not working properly, if you have just the one gun you need it to work.

Now I'm not saying the 11.1v battery will cause you problems, but if the gun fails on you, you will suspect or blame the battery, and you'll be kicking yourself for using it, because at that point you'd take a gun firing 'slowly' over one not firing at all!

Having said that, I'm sure I'll send up buying an 11.1v eventually.  But I have two other rifles and a pistol in my collection as backup ?

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Yeah thats a good point once i get the rif sorted and actually get delivery of the one i ordered xD ill 100% be using it on a 7.4 first for a full day and see how i feel never know with a fully juiced 7.4 could be absolutely fine so defo going to test it first and see. like you say id rather a working gun than not.

 

[JakeF]

Just to update everyone i have been in touch with Patrol Base today and they couldnt have been more helpful with my order issues (inprevious posts). They had labelled all there Double Eagle M904A's as M908B's in the warehouse so thats why i recieved a 4A. They where very appologetic and understanding. They gave me a couple of options of what i would like to do with the issue and all where a possitive giving me more than the differance in price between the RIF's. i choose to refund the difference and they are sending a free speed loader to me for my troubles. Customer service was 10/10 couldnt reccomed them more.

 

[Rogerborg]

Wow, good on them.  I am delighted to hear that, it's a great advert for them, even with the mix-up.

 

[JakeF]

Wow, good on them.  I am delighted to hear that, it's a great advert for them, even with the mix-up.

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100% This is the first time using them and i will be returning to use them again. The M904A its self wasnt in anyway bad i was actually really happen when just looking at it it was the fact it just wasnt what i paid for but with the difference sorted out im more than happy to call this my first RIF!! Cant wait till sunday to use this and get my sights and hop set up and really get a good feel for it. Deffo going to be running .25's for it first then might go for .28's will see how the .25's preform for me and my playstyle (running like a mad man into buildings with four people looking at the door normally xD).

 

[RostokMcSpoons]

100% This is the first time using them and i will be returning to use them again. The M904A its self wasnt in anyway bad i was actually really happen when just looking at it it was the fact it just wasnt what i paid for but with the difference sorted out im more than happy to call this my first RIF!! Cant wait till sunday to use this and get my sights and hop set up and really get a good feel for it. Deffo going to be running .25's for it first then might go for .28's will see how the .25's preform for me and my playstyle (running like a mad man into buildings with four people looking at the door normally xD).

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Glad you're getting your gun sorted, and patrolbase haven't let you down    

For the BB weight, I was pinging .28's around yesterday like a good 'un, had to make some fine adjustments to dial down the hop in the middle of a fight to get the best traectory so hops those with ease. 

And I've shown it'll lift 0.30s at short range in my smallish garden, so I wouldn't be at all surprised if you could go to 0.32s if you wanted to.
But if you're mostly going CQB then go with ... whatever is best value?

 

[JakeF]

Glad you're getting your gun sorted, and patrolbase haven't let you down    

For the BB weight, I was pinging .28's around yesterday like a good 'un, had to make some fine adjustments to dial down the hop in the middle of a fight to get the best traectory so hops those with ease. 

And I've shown it'll lift 0.30s at short range in my smallish garden, so I wouldn't be at all surprised if you could go to 0.32s if you wanted to.
But if you're mostly going CQB then go with ... whatever is best value?

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think i might bump it to .28's then since i play a mix of woodland and CQB village with some longer distances in the village still. thinking about tight bore barrel and new hop rubber in a month or so see how it feels.

 

[Rogerborg]

Yup, I like .28s as a decent combination of range vs cost.

Well, good news, you've got money in the budget for barrel and hop rubber.  You shouldn't really need them, although I do like Maple Leaf rubbers.

 

[Stevobeavo]

Just to add I've been using my 904G with a 11.1v battery for over a year now and it's been fine. 

Definitely noticed a improvement with the 11.1v over a 7.4v.

I'll be using a 11.1v with my new 904H too. 

 

[RostokMcSpoons]

This afternoon I found hobbyking had a tiny lipo 11.1v stock battery that still is 1200 mAH, and just a tenner.  It's due to be back in stock at the end of the month.  With your vote of confidence in the DE internals I'm sure I'll buy one and give it a go

 

[Druid799]

Just to add I've been using my 904G with a 11.1v battery for over a year now and it's been fine. 

Definitely noticed a improvement with the 11.1v over a 7.4v.

I'll be using a 11.1v with my new 904H too. 

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DE do actually recommend using 11.1v’s in them .

 

[RostokMcSpoons]

DE do actually recommend using 11.1v’s in them .

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Yeah, but that's with their 'full fat' spring giving > 400fps.   The problem is over-running the gearbox when there's less resistance from our namby-pamby 310fps (when new) springs.
So that's why Patrolbase etc recommend the 7.4v instead.  I'm sure there's a degree of 'CYA' in that, but it makes logical sense.  The good news is the empirical evidence suggests the DE internals are well put together and can cope (at least for a decent time)

So 11.1v is not a terrible idea. In fact with all this talk of the damned things I've just ordered the cheap 11.1v 1200mAH Nano-Tech from HobbyKing (slightly different version from the one I'd seen that triggered my previous post), because it's a stupendously cheap £11 delivered, so I'm going to try it.  And I could do with an extra spare battery so why not. 

As I said to Jake though, I've got a couple of guns that'll fill in if the DE dies on me.  As he's just got one, it's a slightly different equation.   

I seem to be fairly unlucky with my kit, I may be being unreasonably risk-averse
 

(Here's the cheapo battery: https://hobbyking.com/en_us/turnigy-nano-tech-1200mah-3s-15-25c-lipo-airsoft-pack-t-connector.html)

 

[Druid799]

Yeah, but that's with their 'full fat' spring giving > 400fps.   The problem is over-running the gearbox when there's less resistance from our namby-pamby 310fps (when new) springs.
So that's why Patrolbase etc recommend the 7.4v instead.  I'm sure there's a degree of 'CYA' in that, but it makes logical sense.  The good news is the empirical evidence suggests the DE internals are well put together and can cope (at least for a decent time)

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Now I do see this as a valid argument if your using your gun like a rental (gazillion sec bursts ?) but I’ve come to my own conclusion that with ‘sensible’ use of the trigger pretty much all current AEG’s can use 11.1v Batts with no detrimental effect to them (only ones I’d agree with not using them in are TM Recoils)the ones we had yrs ago yes I do agree you where on your way to an implosion in a gearbox with a lot of brands back then but the AEG’s you buy these days are of a far superior quality compared to what you had even just  6+yrs ago ? 

 

[RostokMcSpoons]

Yeah fair enough Druid.  I shall resist the small temptation to try this 'experimental' 11.1v battery in one of the two old guns and just try it in the DE

Btw with its MOSFET, does that add some extra protection?  I might use my M16 as a base for some experimentation, either going dmr, or super shorty..  plenty of room to add a MOSFET, would it be worthwhile?

(If there's more than a simple answer to that I'll chuck that question in to a separate thread)

 

[JakeF]

Yup, I like .28s as a decent combination of range vs cost.

Well, good news, you've got money in the budget for barrel and hop rubber.  You shouldn't really need them, although I do like Maple Leaf rubbers.

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yeah going to try .25's and see how it goes on sunday.

Just to add I've been using my 904G with a 11.1v battery for over a year now and it's been fine. 

Definitely noticed a improvement with the 11.1v over a 7.4v.

I'll be using a 11.1v with my new 904H too. 

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i think i will try it with the 7.4v first and see how i like it if i feel like i need a bit more then ill have a shop around. I think the trouble for me is the space in the buffer tube seems pretty small so with my lack of knowledge finding one that fits might be an issue but im sure a stick 11.1 wouldnt be an issues as i have my stock extended a bit aqnyway so has a bit more room for length.

 

[Rogerborg]

a stick 11.1 wouldnt be an issues as i have my stock extended a bit aqnyway so has a bit more room for length

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It's not the length so as the girth as the actress said to the bishop.  Wiring can take up quite a bit of space in the buffer, so you're either looking at trying to stuff the battery and wiring in side by side, or coil the wiring down into the buffer (remembering that it has to  be long enough to reach the end) and ram the battery down on top.

All that said, I'ma go and do some experiments now, as those 16-18mm x 20mm 11.1Vs might actually go into my MP5K or down a buffer tube.