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stryfe imr questions?


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#1 scruffynerfherder

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Posted 26 May 2017 - 01:21 PM

What's up everyone. Finally got a new stryfe and had some questions on imr batteries.

First off, how many imr batteries can I safely run in a stock internal (for now) stryfe?

I'm almost certain 2 imr's and 2 dummie batteries would be completely safe in a stock stryfe. But, I have seen/read that bypassing the thermistor will allow the stryfe to run on 3 imr's and 1 dummie without shutting off to protect itself, but is it safe to run 3 without damaging my stryfe?

Eventually I will replace motors, cage, flywheels, rewire etc, but can I run 3 imr batteries with just bypassing the thermistor and removing locks without killing my stryfe?

Also, which 14500 button top imr batteries should I buy? (Don't plan on going lipo)

Efest red? Efest purple? Some other brand of imr battery? Should I be looking for some kind of "protected" imr?

So, which imr batteries, and how many imr's can I safely run on a stock (for now) without destroying it?

Thanks everyone!
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#2 mykeypowell

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Posted 26 May 2017 - 02:12 PM

i reccomend red EFEST imrs there other other brands but i would reccomend them alsoyou can put 3 imrs in stryfe whe you bypassthe thermistor


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#3 scruffynerfherder

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Posted 26 May 2017 - 02:27 PM

Yeah it seems efest red are the most used.

So 3 imr batteries won't destroy a stock (for now) stryfe? I'm pretty worried I will end up melting everything inside lol. I am almost certain I would have zero problems running two, just want some comforting reassurance lol

Is anything needed to run 3 other than bypassing the thermistor?

What all would be needed to run 4 imr batteries?
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#4 mykeypowell

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Posted 26 May 2017 - 04:33 PM

nope it won't melt unless you charge the imrs to 4.2 (max) then it will melt but I've had one of my many stryfes run on three IMRs so yup


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#5 IAmAPenguin

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Posted 27 May 2017 - 09:16 AM

I honestly cant wrap my head around why anyone would want to use imr's or trustfires in a build at all, but if you insist i have heard that the EFEST red imr's are the best option if you want to go that route, as for running 3 i would say just take the safe route and stick with 2 to avoid any further difficulty. I would also strongly recommend switching up to a lipo if you want reliability and power because when you go and upgrade the motors and wiring in your stryfe, those tiny little batteries just wont be able to handle all of the shit that you are going to be throwing at them. They just wont give you the power, reliability and longevity that you are going to get out of a lipo, plus lipo's are pretty much dirt cheap now. the one im running on my stryfe with xp 180s is a turnigy 2s 1000mAh 25-30c high current lithium-polymer battery and it only set me back around 12AUD, now thats a great deal and is certainly worth all of the gain you will be getting from running a lipo. If you want to look into this topic with more depth i would highly reccomend checking out foam data services' two videos on 'Bringing balance to your blaster'.
Hope you found this useful,
Thanks.
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#6 scruffynerfherder

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Posted 27 May 2017 - 02:35 PM

I'm not too interested in running lipo, just drop in batteries that fit unmodded battery tray.

Should I uprgrade the wiring and rev trigger switch if running 3 imr's or will stock wiring hold up to 3? I eventually plan to rewire the whole thing but would like to run 3 imr's on stock wiring for a while if possible.
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#7 scruffynerfherder

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Posted 28 May 2017 - 10:38 PM

It would be easier to talk me into a nimh pack than lipo :) I just don't feel that I nerf or rc (hardcore) enough for lipo in either of them.

I'm always too worried about "mishandling" lipos, plus I'm not that hardcore into it. That and I already have nimh pack chargers and rc packs.

I like the idea of imr because its a simple drop in stock tray, not as "dangerous" as lipo, and I don't really like extended battery trays that much or external exposed batteries.

IF I went with something that wouldnt fit the stock tray, it would have to be able to fit in an expanded tray cover and be nimh. Both because I have nimh stuff already, and I wouldn't have to be nearly as careful as with lipo.

Should I redo wiring and microswitch with 3 imr batteries?

Also feel free to talk me into a nimh pack. What size would fit in an expandedd tray cover? Which nimh specs should I be looking for? Should I also redo wiring and switch with nimh?

Edited by scruffynerfherder, 28 May 2017 - 10:57 PM.

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#8 IAmAPenguin

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Posted 13 June 2017 - 03:13 AM

Well i guess with a proper re-wire with 18 or 16 guage wiring and a high current microswitch installed imrs wouldnt exactly be a bad choice, there are just better options out there. So with a re wire you should be safe running 4 imrs.
And yea, if you want to go the extra mile a NiMh pack is a very safe and reliable option that will last a lot longer and give more power than imrs if you don't want to deal with a LiPo. As for what size pack to use in a stryfe, i honestly have no idea but I'm sure you could find out if you just go browsing dimensions of certain packs and seeing if they match the stryfe battery trey dimensions. You can make more room for a NiMh pack by cutting out that big bit of plastic above where the batteries sit, if you do the hole for the pack should follow the same outer dimension of the battery door.
Last thing, in case you didn't know there is a bit of misunderstanding about the safety of LiPo packs, they are actually very safe as long as you don't short circuit them for a long period of time or do something stupid like stab the shit out them with a screwdriver. (then your REALLY buggered).
But yea, hope i was helpful and hope i helped you make a decision.
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#9 Lasagna

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Posted 13 June 2017 - 12:32 PM

Rewire if you are going with 3 IMR's is best. IIRC Coop ran 3 IMR's + 1 dummy on a completely stock blaster, except for maybe thermistors. You will probably eventually kill the motors on 3 IMR's, but as long as you don't like rev for like a minute straight, you will be fine for the short term. If you don't thermistor, 2 IMR's is best for now, most likely.


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#10 Elmoboy

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Posted 10 October 2018 - 09:08 AM

I using 2 x Imr and 2 x dummy on stock stryfe. I stored the batteries inside.. But after 6 mth I try to play with it it wun run anymore.. Even if I use normal AA batteries. May I know what happen?
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#11 Meaker VI

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Posted 10 October 2018 - 12:22 PM

I using 2 x Imr and 2 x dummy on stock stryfe. I stored the batteries inside.. But after 6 mth I try to play with it it wun run anymore.. Even if I use normal AA batteries. May I know what happen?

Storing any batteries in a blaster isnt a good idea. It is possible you have blown one of the protection devices in the stryfe, requiring it (even with 22ga wire and otherwise stock parts) may fix it. If it were me, I would also check that the motors are ok first by stripping part of the wires going to the motors and then touching them to a AA or 9v battery.

I also see that you are from Singapore, so your English may not be perfect, but try to avoid abbreviations or shorthand in your posts.

Edited by Meaker VI, 10 October 2018 - 12:24 PM.

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#12 Elmoboy

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Posted 10 October 2018 - 11:20 PM

Storing any batteries in a blaster isnt a good idea. It is possible you have blown one of the protection devices in the stryfe, requiring it (even with 22ga wire and otherwise stock parts) may fix it. If it were me, I would also check that the motors are ok first by stripping part of the wires going to the motors and then touching them to a AA or 9v battery.

I also see that you are from Singapore, so your English may not be perfect, but try to avoid abbreviations or shorthand in your posts.


Thanks.. I stored the batteries inside and is an open circuit so what could have cause the malfunction? It is the same problem for my rapidstrike. I been doing this for the past year without problem so I left them inside.
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