3 replies to this topic

[SolarFusion]

I have just recently finished a full mod on my Vulcan. AR/pin removal, o-ring taped, painted, and voltage doubled to 18v. I am still wanting a higher ROF however and was wondering if anybody has upped their Vulcan to say...24v?

Here is a pic to keep you guys happy:



EDIT: The RPM I'm currently getting is aprox. 3 rounds per minute.

Edited by SolarFusion, 17 August 2014 - 12:08 PM.

[Aeromech]

I've modded a few Vulcans back in the day. I cranked it up to 18V, but you should be able to get away with 24V without too much trouble. But there are some things to note:

-If you up the Voltage, I recommend using alkalines; they really aren't expensive and they last longer than a charge on a rechargeable batteries.
-Stay away from 9V batteries; they have a very low current output, and are extremely temperature sensitive. They will flat out not work in the winter.
-Smallest size battery that should be used is AA. They provide fair temperature resistance and lifespan.
-By pumping 24V into a 9V rated motor you are blowing away any factor of safety that the designers/engineers put into it. You are greatly shortening the lifespan of your system. It won't smoke or melt the plastic, but you may get a whiff of that telltale smell motors give off under a load.

I'd do it if you've already modded the thing.

[SolarFusion]

I currently have a pair of 9volt batteries hooked up to it. You are recommending plugging a bunch of AAs in series into it instead, alright, I guess I can do that. I have noticed that the motor tends to bog down about halfway through a belt, would that be a sign of the low current output of 9v batteries?

What do you mean by "Winter" temperatures? I live in an area where it gets down to -22f (-30C).

I do realize that what you said is true about the dangers of triple powering a motor however as I said; I want to see how much I can get out of it.

I have a problem however where it fails to load the belt and keeps turning over without the chain cogs grabbing. I end up needing to help feed it through. Is this a problem with the multi-level gear being improperly aligned?


Thank you for the feedback.


-SolarFusion

Edited by SolarFusion, 17 August 2014 - 08:45 PM.

[Aeromech]

What do you mean by "Winter" temperatures? I live in an area where it gets down to -22f (-30C).

I mean I've accidentally left a blaster in my car in the middle of HVZ week and needed to change the batteries to get the thing working again. A battery functions because of a chemical reaction that produces a flow of electrons. Cool down that reaction and you also slow it down, yielding a lower power output. If you crack open a 9V battery it's really just 6 tiny cylinder batteries stacked together like this. They are extremely susceptible to this phenomena because the individual battery piles are so small.

I have a problem however where it fails to load the belt and keeps turning over without the chain cogs grabbing. I end up needing to help feed it through. Is this a problem with the multi-level gear being improperly aligned?

From my experience this is more of a design flaw. The spring on the multi-level co-centric gear is aligned just fine. This is a safety feature designed to allow the operator of the blaster to pull a chain through without damaging the gears. Open up the blaster and notice a set of teeth that grab each other, but not incredibly tightly. These gears are design to pull apart enough to "slip" when enough force is applied; this occurs when the chain is pull through or when it's advance is prohibited. This is a really poor design because I have had Vulcans have many feeding issues similar to what you describe. See if you can put a stronger spring in that section, but if I recall these gears are stupid small, like 1/2" diameter tops, and you have to dissect your blaster fairly far to get to it. The other option is to fuse the two parts of the slip-gear together, but in the (likely) event of a jam, trying to pull the chain through would wreck your internals. Unless you modded the chain door to have a manual release a la airzone punisher.

Long story short, your problems are related to the Vulcan being flawed, not really anything you did wrong.