Individual Racing Parts (IRP) V3 Short Shifter Rattle Thread
 

EDIT: A solution has been found! See second post for DIY!


So I purchased the IRP V3 short shifter back in May, after watching tons of videos, and reading nothing but positive reviews. I previously had the Kartboy short shifter, and It got the job done, but the rattle absolutely killed me. I bought the IRP, due to the fact that I hadn't seen anyone complaining about it rattling. To my chagrin, it DEFINITELY rattles. Even worse than the Kartboy. I understand that it's a "racecar part" that has NVH, and my daily commute is only 7 miles, so I shouldn't be complaining, but the fact that the rattling ceases when I hold the button tells me that there's room for improvement. With that said, I sought out some solutions.

Tom, @gearOnePerformance machined a groove into the button of the reverse lockout, assuming (logically) that the rattling was coming from the metal on metal rubbing of the button on the shifter itself, but as of this writing, hasn't had the opportunity to test it. After talking to him extensively about his process, I decided to undertake the modification myself. I pulled my button off, only to find that my particular model already had an o-ring:

http://i.imgur.com/OXskHab.jpg

However, to my eyes, it looked to be too small:

http://i.imgur.com/Xdjfv7E.jpg

So I added a larger o-ring. No difference. Took the larger o-ring off, and carefully wrapped the button in a few layers of electrical tape, to the point where it simply would not wiggle. Again, no difference. My analysis is that it is not the button that is rattling, but the shaft of the button itself. At this point, my plan is to machine three grooves in the shaft, and add three o-rings, to see if that mitigates the issue. Failing that, I'm not sure what else to do, and I'm open to suggestions.

Will update this post with a DIY if I find a solution.

It seems as though we have a solution! I would like to extend a massive "thank you!" to @Hawk77FT for his help in tracking down this fix and putting together a DIY with pictures.

IRP has indeed released a fix for the rattle that occurs in the V3 short shifter. It consists of a rubber gasket, four plastic washers, and an aluminum spacer:

http://i.imgur.com/SmfXXt9.jpg

In addition to this, he fabricated a custom mount, made of carbon fiber a foam/rubber material:

http://i.imgur.com/8H5D7fg.jpg

http://i.imgur.com/vEdAUyg.jpg

http://i.imgur.com/nYWMOlu.jpg

http://i.imgur.com/dqB1TKg.jpg

http://i.imgur.com/M6FIHl9.jpg



Now, onto the DIY for the fix: (again, huge thanks to @Hawk77FT)

1.) Make sure that the vertical handle position has about 2mm clearance:

http://i.imgur.com/hkDfbCm.png

2. This image shows the gaskets fitment:

http://i.imgur.com/nJ0kiVN.png

3. If the shaft in this picture moves side to side, put on some thread locker.

http://i.imgur.com/VImBmoY.png

http://i.imgur.com/cDF1eZn.png

4. The black aluminum cylinder needs to be pushed in this position:

http://i.imgur.com/iRdLum5.png

5. Undo the screw pointed out in Image 1 and pull it a little so the cable has a small amount of tension. You will see the top cylinder (Image 2) moving a little).

http://i.imgur.com/TQ7l9E3.png

Enjoy!

Friendly FYI

3rd party hosting doesn't work for Photobucket anymore unless you're paying them like $400/yr. That being said, you should look into hosting your images elsewhere so they can actually be seen here in the forums.

Because I can't see either of the pics you posted.

Thank you, updated with imgur files. :thumbup:

bump for solution and DIY!

Follow up:


I have been using the anti-rattle kit for almost a month, and I've noticed ZERO improvement. I ended up getting my kit from FT86Speedfactory, who had it on my doorstep in less than 2 days. I'm still waiting for IRP's kit to show up. (It's been over a month now)

That said, I've noticed that the biggest improvement came from obtaining a piece of R/C foam, that's designed to protect the motors of R/C planes, helicopters, etc from crashes. I cut it into a pad, the same size as the bottom plate of the shifter, and sandwiched it in between the shifter and the rubber gasket. It didn't eliminate the rattle, but it helped. The source of the rattle is 100% the shaft of the button rattling around in the inside of the shifter, so I will continue to look for away to fix it....









which might mean a CAE shifter in is my future... :eyeroll:

Why not try some heat shrink over the shaft? It should still allow for installation and act as a buffer to keep the rattle down. Plus it's fairly easy and cheap to try.

How do you remove the reverse lock out button without disassembling the whole shifter? Would like to give it a go to reduce the vibrations on the shaft of the button.

On the front of the shifter, around the halfway point, there is a small allen screw inside of the silver cylinder. Simply loosen it, and turn the button counter clockwise. You may need to use something like a rubber mallet, or gloves with some sort of rubber on them to get the button to turn, or you may not. I've seen both easily removed buttons, and some that were not so easy.

Has anyone run into an issue with going from a transmission mounted shifter to a chassis mounted shifter? I imagine with heavy track use, you're increasing your chances of missed shifts / misalignments as the drivetrain floats and the chassis mounted shifter stays rigidly mounted?

Has there been any update to the rattling issue? That heat shrink wrap around the lockout button shaft was a good idea. Curious if anyone gave that a go?

I have not given the heat shrink idea a try yet, but it's a good idea. I'll try it this weekend and report back. The tolerances in the button tunnel are pretty tight, so I'm anticipating it being too thick.

As of right now, mine rattles just as much as ever, and I've developed a new issue where I can shift in to reverse without pressing the button. I've nearly backed into two people at stop lights because of this "feature".

Just a heads up for those that didn't see this.
http://www.ft86club.com/forums/showthread.php?t=123800

Just a heads up for those that didn't see this.
http://www.ft86club.com/forums/showthread.php?t=123800