Shogun Stop It - does it work?

[novanicks]

Has anyone used the Shogun Stop It? (see link below)

https://www.shogunindustries.com/cgi...ew_item=101003

If so, does it actually work?

[R&S Motorsports]

Its a type of electrical surge protector for the solinoid. Basicly like the one that is protecting your computer or TV just a bit different.

[Bryan Gillespie]

I ran one in the nova, it seem to keep the spread closer together
Or it could have been that there was nothing else to blame.

[GaryGoFast]

Originally Posted by Bryan Gillespie

I ran one in the nova, it seem to keep the spread closer together
Or it could have been that there was nothing else to blame.

I had one, never new if it was working, Cant say it hurt either. How do you see the effects of it working?

[Ruth]

Originally Posted by GaryGoFast

I had one, never new if it was working, Cant say it hurt either. How do you see the effects of it working?

This illustration:



is a lab scope capture of a fuel injector but the same in theory.

A. Shows the 12 volt supply voltage.

B. Shows the voltage being pulled low as the trans brake button is being applied.

C. Shows the release of the Trans brake button and the inductive kick 60 VDC.

D. When the trans brake solenoid button is released , the magnetic field collapses, and this generates the inductive kick

If inductive kick was an issue for you, and the box worked as they claim it does…..at the release of the transbrake button you would no longer have that spike above 12vdc when the solenoid is released,

I have tested my car a few times over the years and never seen a issue with inductive kick. I believe this is product nothing more than a clipping diode? but I have never seen the inside of one, so I have no idea? Maybe the experts can chime in and elaborate?

I was told years ago by one of the manufactures of throttle stop timers I believe Biondo? ( I use a Mega 400) that the Mega 400 has diode protection built in, as does the Dedenbear and some other manufactures (so I was told….. and by no means to be taken as a fact)

Anyway you can measure inductive kick with a lab scope, a good graphing multi-meter, even a Digital Volt Ohm Meter. Set the DVOM to volts DC on min –max screen to catch it. Connect the - lead to a known good ground and the + lead to anyplace you want to test for high voltage and hold and release the trans brake button and measure the results)

I remember years back someone talking about inductive kick interfering with things like your throttle stop timer.....I guess thats possible? I run a position sensor on my throttle stop to my RacePak datalog to monitor for anomalies in stop time and position. (Thanks to H&C&G&G Racing for the help.)

Most of my issues to date are pilot error!

I’m writing a book on called “1001 Ways to lose” and am now working on chapter 239

HTH
Merry Christmas

[novanicks]

Thanks for the replys.

So Ruth, bottom line do you think it's worth running one? Also, do you think it would add more benefit to a non-delay box car?

[Bryan Gillespie]

Originally Posted by garygofast

i had one, never new if it was working, cant say it hurt either. How do you see the effects of it working?

you win a championship !

[Chris Williams]

Brandon, this seems like a whole lot of voodoo to me. There are probably 100,000 people actively racing cars, and I bet you can't find 10 who have done what this recommends. If this was really a problem, don't you think you'd hear about it all over the place? Don't you think Biondo and Dedenbear and RacePak and all the other people who make sensitive electronics for race cars put in power supplies that isolate them effectively? I know people who have been running the same delay boxes for years with no issues.

I think this is an electrical engineer who's chasing a theoretical problem, not an actual issue... Just my humble opinion.

As for the "Stop-It", the claim they make is that it will improve your reaction time by preventing the surge. But, the "surge" from the transbrake IS the reaction time, so any effect it might have (debatable) is too late...

[superstreet268]

i have wondered about the show gun stop it. once delay box relay is released doesnt that cut connection between trans sol. and the rest of the elec. system?

[Chris Williams]

I fail to see how this could effect reaction times (as advertised). The thing it's protecting you from is the bump from the solenoid hitting, right? Once the solenoid has hit, the party's over, isn't it? Other than perhaps a throttle stop on/off, and maybe a shift, all the electrical stuff that effects r/t (delay, etc.) has already happened, right? Am I missing something?