In the meantime, here is a glimpse at how increases in voltage affect the Stampede's Rate-of-Fire (RoF).
Important Disclaimer: DO NOT attempt this modification unless you are familiar with electrical circuits and accept if your blaster is damaged in the process! Modify at your own risk!
Nerf Stampede - Voltage Increase / RoF Testing Video:
For my voltage tests, i just use different AA battery holders with various quantities of AA batteries so that i can see the effect of increasing voltage in smaller voltage "steps". Hence the use of alligator clips to interface temporarily with the AA battery holders just for testing purposes.
The 3.7V Li-Ion rechargable batteries i use are also AA-sized (14500), so i put them in AA to D battery converters, and since i wanted to test 6 of them, i simply used the original battery sled to hold those Li-Ion rechargables encased in the converters.
I'm actually planning to use Li-Ion rechargables in all my modded Stampedes for Nerf games (i have lots of those batteries). They also lighten the overall weight of the Stampede too. Will just use either 3, 4 or 5 of them (with battery spacers in the battery sled) to get a choice of 12V, 16V or 18V power... easy to tune and regulate for Nerf games.
Refer to my Nerf Stampede Mod Guide for all the other modification steps: http://nerfhaven.com...showtopic=20208
- Update! -
I have test fired more clips and have found that voltages of above 20 Volts produce way too high a rate-of-fire to be able to reliably chamber foam darts from clips and magazines. Although some clips might be able to fire properly once in a while, the majority of clips will get jammed easily very often. Just a slight delay in dart advancement or a bent dart can cause jams to occur.
Testing with 18 Volts provided more manageable speeds, the rate of jams occurring is less but it still happens, especially when worn-out foam darts happen to get stuck in the clips. Not a good situation to be in during a Nerf game!
Overall, i've found 15-16 Volts to be just right in terms of improved rate-of-fire, yet with smooth operation and virtually zero jams occuring, even when slightly bent or damaged darts are used. Therefore, i'd recommend using 15-16 Volts for reliable operation in modded Stampedes.
With that note... here is a Clip Reload & Test Fire video of a modded Nerf Stampede running on 15 Volts:
Edited by SgNerf, 29 April 2011 - 10:59 AM.