9 replies to this topic

[Baca2460]

I just got my first commission for a stryfe and I don't want them to have to deal with lipos. I was wondering if I could use 4 aa sized imrs with mtb rhinos.

[shandsgator8]

I don't know for sure if they would work,  but even if they do, they're not going to be the most efficient given their internal resistance.

 

I would strongly recommend against using such cheap lithium cells with high performance motors. You could make a 6-8 cell AA NiMH battery pack that should work ok with the MTB Rhinos (assuming you use respectable cells). But then that would take you additional time and effort and cut into your profit margins.

 

Your call.

[Baca2460]

As good idea as that sounds I haven't done a good amount of flywheel/electrical work so how would one go about doing that?

[shandsgator8]

If you don't know how to do that, you shouldn't be taking commissions.

[SirBrass]

No, you can't use IMRs with rhinos. IMRs don't have the discharge ability for any MTB motors. In fact, the batteries will be overly stressed by having more current demanded from them than they're capable of delivering.

Lipos are not much of a risk at all if you just treat them right (don't over-discharge, always balance charge them, and put them into storage (half charge) if you're not going to use them for about a week, and disconnect them when your not going to be using them). It's not much to ask really.

If you're not willing to design for lipo, NiMH or LiFe are your other options (but with noticeable performance drop off compared to lipo).

Edited by SirBrass, 22 March 2017 - 08:11 PM.

[Baca2460]

Sorry being dumb, I'll just use a Lipo.

[FFNerfmodding]

I would be careful with the Lipo, they are often very high maintenance. Be sure to read a few guides on how to take care of them if you are determined, and remember they are quite expensive to begin using, as the equipment required often begins totalling over $100... You may also want to know whether or not your buyer is willing to supply his own lipo battery, as he would need the expensive charging equipment as well. I recommend just attaching a generic XT60 clip to the main circuit after testing it with IMRs that carry a similar voltage. It's up to you, as it sound like, but I would talk to your buyer.

[scruffynerfherder]

Are there any motors that can be used with IMR batteries other than the stock nerf motors?

Every "answer" I've seen is always "go lipo" instead of answering the questions about IMR...

Even a motor that has same performance/specs as stock nerf motors would be nice (for stock replacements instead of buying a new blaster), or a motor with same performance/specs as stock motors but will carbon brushes and ball bearings would be nice instead of just "go lipo"...

[Meaker VI]

Are there any motors that can be used with IMR batteries other than the stock nerf motors?

Yes, any motor that can be used with a Lipo can also be used with any battery, but it may not perform as well. Watch your input voltage, a 2s battery setup will underperform when trying to push motors designed for 3s and the motors may burn out early if you go the other way.

Edit: Also, some batteries cannot supply the power required to push mod/stock motors, and will become damaged/explode trying (***fires, which, as I understand it, are designed for low-amp flashlights and not high-amp motors)

Edited by Meaker VI, 31 May 2017 - 01:17 PM.

[mykeypowell]

i like using li-mn packs that discharge 10 - 1000 depending on your pack