10 replies to this topic

[MercylessMaciver]

I'm in the process of modding my Rapidstrike. I have cut the wires and everything to the motors and cut out the resistors. Finally figured out how to get the fly wheels off as I'm wanting to put RM2 motors in. Question is, how do you get the motor casing out of the motor slot? It seems to be seriously stuck. I know someone out there has done this before, so how did you get them out? Dipping it in hot water? (assuming their glued in)

Thanks

[azrael]

Try cutting through the glue.

I don't recommend using RM2s. If you do, don't over volt it past 9v.

[MercylessMaciver]

I don't see any glue to cut through.... I'm trying to remove the metal casing of the motor and just can't seem to get it to come out. I've succeeded in pulling them out. Apparently, they were just stuck in there by friction and some little plastic grooves.

About the voltage. I will be using two Ultrafire's (3.7 V) as thats all the power I should need. Other option is just to use four 1.2 V Re-chargeable batteries.

Edited by MercylessMaciver, 08 September 2013 - 11:15 AM.

[MercylessMaciver]

Okay, its time for the next step and I have another question.

I don't have the RM2's yet to test it, but here's what I'm thinking.

1. Use the RM2's with 2x 18560 Ultrafires (3.7 Volts, 3000mAh) (if you look these up on Ebay, you'll find that they are bigger than AA's, my mistake when I ordered them, but I figured that they would be able to provide something extra due to them being bigger) I don't know to much about Voltage and Amps, but enough to rewire the blaster and not fry the motors in the process. Would these larger batteries be able to provide more amps? (I saw in an old thread someone talking about the RM2's needing more amps, and that Trustfires just couldn't deliver what they needed.) HELP???

OR

2. Use the RM2's with 4x 1.2V AA's. I'm trying to get the best performance out of my blaster without killing the motors, but a large upgrade from stock form.

Any insight would be appreciated.

[azrael]

Trustfires/Ultrafires usually do not have the current supply they boast, but if someone has heard otherwise, feel free to correct me.

To find out how much current you batteries can supply, you must know the discharge rate.
Then check out this page to learn how:
http://nerfscience.b...-page_5065.html

At 8.4V, they will need around 4-5A at stall. The batteries you linked can likely do this. However, do not expect a huge increase over stock.

[MercylessMaciver]

I can't really change from the RM2's now, so what would you suggest in the way of batteries? (without going to LiPo)

Would using 4x 1.2V Ni-MH work better with the RM2's than the 2x 3.7 V Li-Ion's?

[azrael]

No idea, you should look up the specs.

I'm not telling you not to use RM2s, just that they aren't really too much of an upgrade. Additionally, they can suffer brush failure rather quickly if you try higher than 9v.

[SnowMonkXV]

What is your preferred battery for a Tamiya Mach Dash Pro flywheel setup?

I checked all the sites listed in the link you provided, (( http://nerfscience.b...-page_5065.html )) However, as stated, there are so many types and ratings. After a search I found little in suggested batteries other then the typical Ultra/Trustfire selection.

Any thoughts or ideas are greatly appreciated.

[azrael]

Oh, not to threadjack, but I use one cell LiPos. I am currently using a 4300mAh Gens Ace hard case LiPo. Gens Ace is a good brand, if you want a battery that is cheaper, just get something with less current supply.

Feel free to PM me to continue to conversation.

[MercylessMaciver]

Okay, here's a question. How come Coop's RS is working great on 12ish volts (Ultrafires) on his YouTube video's (and I believe the new motors) and mine wouldn't work on my 8ish volts? (besides the decreased voltage) Would the decreased voltage make a huge difference in the recovery time for the motors?

Edited by MercylessMaciver, 19 September 2013 - 02:04 PM.

[azrael]

Okay, here's a question. How come Coop's RS is working great on 12ish volts (Ultrafires) on his YouTube video's (and I believe the new motors) and mine wouldn't work on my 8ish volts? (besides the decreased voltage) Would the decreased voltage make a huge difference in the recovery time for the motors?

You can use them, but the rate of fire is lower, since they aren't supplying the current that blaster needs at stall.
It's not about decreased voltage, it's that batteries literally cannot supply the current - there is a limitation. As you increase voltage, motors demand more current. That's the thought process behind overvolting. But if you exceed the limitation, recovery and rev time will be slower.

Check out Torukmakto's Rapidstrike, his RoF is noticeably higher than Trustfire equipped RS mods I have seen.

Edited by azrael, 26 September 2013 - 07:55 PM.