1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Prinsu Cabrack Vibration

Discussion in '3rd Gen. Tacomas (2016+)' started by Tim1o9, Jul 3, 2018.

  1. Jul 3, 2018 at 7:04 PM
    #1
    Tim1o9

    Tim1o9 [OP] Well-Known Member

    Joined:
    May 6, 2018
    Member:
    #252680
    Messages:
    75
    Gender:
    Male
    First Name:
    Tim
    UTAH, but like middle of no where UTAH
    Vehicle:
    2018 Tacoma
    But shaped indention in drivers seat
    So, I Installed my prinsu cabrack last week and when I was driving on the highway at speeds over 59 MPH my mirror was vibrating uncontrollably to the point I couldnt see what lane the cars behind me were in. I have never seen this before in my 2018 Tacoma, as I progressed down the road and kept up with traffic the vibrations got severely worse and the mirror started chattering audibly.

    Has anyone else had this issue, or did my truck just decide to go full retard?

    I have since Changed the wind deflector location from as lowly mounted as possible to one higher. This seems to have solved the issue20180701_164949.jpg
    You can see where the wind deflector is mounted in the middle 2 bolt holes, where prior it was the bottom two. I would like to replace the aluminum cross member for the wind deflector with a steel one and slide it back down and see if it is a structural rigidity issue.

    My theory is that when comparing the imposed wind speed of the narrow gap between the roof and wind deflector vs the imposed wind speed above the vehicle there is enough of a differential in the airflow to vibrate it at the perfect frequency to piss off the mirror. With the gap widened there is enough space between the upper and lower edge of the deflector that it does not vibrate as badly. I modeled the wind deflector in solid works, but I could not get a flow simulation to run properly let alone show how that flow would impact the wind deflector... one day I will get good at ansys.

    I ended up getting weather stripping and plugging that stuff on the bottom of the wind deflector and lowering the cross member all the way. Its not very noticable as far as wind noise is concerned. and there is minimal impact on my mpg
     
    Last edited: Aug 9, 2018
    rlx02 and SilverII like this.
  2. Jul 3, 2018 at 7:35 PM
    #2
    OriginalMan

    OriginalMan Well-Known Member

    Joined:
    Apr 28, 2018
    Member:
    #251976
    Messages:
    759
    Gender:
    Male
    Oahu 808
    Vehicle:
    2017 TRD OR 4x4
    Bilstein 5100/888; 5160/AAL; SCS Ray10 Limited Gold; 285/70 Cooper STT PRO; AVS; OVTuned; Prinsu Cabrac; RCI Bedrack; TC Bed Stiffner
    If it doesn’t work out I’ll buy it from you. Good luck!
     
  3. Jul 3, 2018 at 8:18 PM
    #3
    Doozy4212

    Doozy4212 upTOP Overland Technical Design and Application

    Joined:
    May 22, 2016
    Member:
    #187612
    Messages:
    2,227
    Gender:
    Male
    First Name:
    Drew
    Littleton, CO
    Vehicle:
    2017 TRD OR DCSB SUPER WHITE
    All the things...click the link in sig
    a steel extrusion will be absolutely no more rigid than aluminum. i recommend putting the bulb seal on the bottom of the deflector and moving it back down.
     
    OnHartung'sRoad likes this.
  4. Jul 4, 2018 at 4:55 AM
    #4
    RedBeard1

    RedBeard1 Hangry Fat Kid

    Joined:
    Nov 9, 2015
    Member:
    #169163
    Messages:
    2,507
    Gender:
    Male
    First Name:
    Red
    The Republic of Texas
    Vehicle:
    1985 Hilux Crawler(Pete), 2016 Quicksand TRD OR 6MT (Wombat), 2016 TRD Pro T4R (OVTUNE # 2403)
    Mostly stuff I built.
    Move your wind deflector down a hole and install the weather stripping across the bottom. Should solve your issues.
     
  5. Jul 4, 2018 at 7:00 AM
    #5
    jnjoiwngs

    jnjoiwngs JnJOwings

    Joined:
    Aug 25, 2017
    Member:
    #228049
    Messages:
    251
    Gender:
    Male
    First Name:
    Jessie
    PNW
    Vehicle:
    2018 White Tacoma TRD
    Hondo radio knobs, Rigid ditch lights, Cali-raised bumper light
    Turn your radio down:boink:
     
  6. Jul 4, 2018 at 7:03 AM
    #6
    EatSleepTacos

    EatSleepTacos MOBTOWN OFFROAD AMBASSADOR

    Joined:
    Mar 24, 2015
    Member:
    #151688
    Messages:
    42,001
    Gender:
    Male
    First Name:
    Randy
    Chesapeake, VA
    Vehicle:
    4x4 2005 SR5 AC 6MT POOP Edition
  7. Jul 4, 2018 at 7:12 AM
    #7
    Marbleyard

    Marbleyard Thread killer

    Joined:
    Jul 15, 2016
    Member:
    #192084
    Messages:
    796
    Gender:
    Male
    First Name:
    John
    Virginia
    Vehicle:
    2019 4Runner Pro
    SOLD 2016 taco: premium technology and tow package. OV Tune 1.05; A.R.E. V Camper Shell; BRO grille & Tails; OEM bed mat; Xenon Depot HID headlight conversion; reflective gray tailgate letter inserts; GoPro session; Hondo radio knobs; K&N cold air intake, quicksand painted dash bezels, Subaru dash speakers, Kicker CS 6x9 fronts and 6.5 rear speakers; All LED interior lights and LED high-beam headlights. Redline elite hood shock props. prinsu cab and camper rack with rough country 30" light bar; (2) 8" rear facing “F.U.”rough country black LED lights; prinsu cargo basket kit, (2) prinsu load racks; roadshower 4; ARB 2500 awning and room kit; weather tech floor mats; carhart seat covers; ckma12 ARB air compressor under the hood; blue ridge overland gear air tools bag, tool bag, driver's seat molle. Rack mounted TRED 800 recovery treds and plano case. Rotopax water and fuelpax fuel canisters; Pelican cased first aid kit in bed. rockblokz mud flaps. ARB rear dif. breather. Stand alone fuse block. SSO bumper with 10k smittybilt synthetic line winch and factor55 ultrahook. Pro Eagle 2-Ton “The Beast” jack. OME lift kit: 90000 front shocks and 886 OME coils, Camburg 310078 UCA, 60091 rear shocks with light duty Dakar leafs. Good Year duratracs 285/75R16. Black vinyl inlays on factory OR wheels; RCI Steel Front/Trans/Trans Case/Rear Diff Skids, Alum A-Arm; Mobtown bolt-on sliders with scorpion bed coating; pelfreybilt aluminum fuel tank skid; Cali-Raised full length Molle storage LH & RH bed sides; Caliraised bedside reinforcements; HELLA sharptone horns; Optima blue-top battery with AJT machined red tiedown bracket. AJT quicksand key fob. Overland Bound member #6996
  8. Jul 5, 2018 at 5:04 PM
    #8
    cblow5

    cblow5 taco sauce

    Joined:
    Jul 21, 2016
    Member:
    #192571
    Messages:
    961
    Gender:
    Male
    First Name:
    Chas
    Clayton, CA
    Vehicle:
    2016 Inferno TRD ORDC LB 4x4
    Bilstein Lift (5100/5160) w/HD Dakars, Mobtown skids, TRD CAI, Leer M180 cap, K02's, Prinsu Toprac & Cabrac, SOS sliders, Rigid OR lighting, Rokblokz, Firestone Ride Rites
    Prinsu supplied the weather stripping when I ordered mine, can't remember if it was extra cost. No vibration of any kind with it installed on lowest setting.
     
    OnHartung'sRoad likes this.
  9. Jul 5, 2018 at 5:13 PM
    #9
    Trident904

    Trident904 Touching Drum Sets

    Joined:
    Jun 13, 2014
    Member:
    #131875
    Messages:
    4,492
    Gender:
    Male
    First Name:
    Brian
    Treasure Coast, Florida
    Vehicle:
    17 4Runner TRD OR
    Modded it so much it turned into a 4Runner
    Got rid of my prinsu rack fairly quickly. Most useless POS I've ever purchased.
     
    twitchhero and here4cake like this.
  10. Jul 5, 2018 at 5:15 PM
    #10
    EatSleepTacos

    EatSleepTacos MOBTOWN OFFROAD AMBASSADOR

    Joined:
    Mar 24, 2015
    Member:
    #151688
    Messages:
    42,001
    Gender:
    Male
    First Name:
    Randy
    Chesapeake, VA
    Vehicle:
    4x4 2005 SR5 AC 6MT POOP Edition
    :rofl: So salty
     
    Trident904 likes this.
  11. Jul 5, 2018 at 5:20 PM
    #11
    Trident904

    Trident904 Touching Drum Sets

    Joined:
    Jun 13, 2014
    Member:
    #131875
    Messages:
    4,492
    Gender:
    Male
    First Name:
    Brian
    Treasure Coast, Florida
    Vehicle:
    17 4Runner TRD OR
    Modded it so much it turned into a 4Runner
    Not salty, it caused crazy rattling with my sunroof linkage during normal driving. When I removed the prinsu, rattling stopped. I know it's the sunroof linkage because I can still slap the headliner and duplicate the noise.
     
  12. Jul 5, 2018 at 5:21 PM
    #12
    OriginalMan

    OriginalMan Well-Known Member

    Joined:
    Apr 28, 2018
    Member:
    #251976
    Messages:
    759
    Gender:
    Male
    Oahu 808
    Vehicle:
    2017 TRD OR 4x4
    Bilstein 5100/888; 5160/AAL; SCS Ray10 Limited Gold; 285/70 Cooper STT PRO; AVS; OVTuned; Prinsu Cabrac; RCI Bedrack; TC Bed Stiffner
    Did you already sell it?
     
  13. Jul 5, 2018 at 5:22 PM
    #13
    Trident904

    Trident904 Touching Drum Sets

    Joined:
    Jun 13, 2014
    Member:
    #131875
    Messages:
    4,492
    Gender:
    Male
    First Name:
    Brian
    Treasure Coast, Florida
    Vehicle:
    17 4Runner TRD OR
    Modded it so much it turned into a 4Runner
    Nope, I threw it out.

    LOL, yes I sold it.
     
  14. Jul 5, 2018 at 5:22 PM
    #14
    EatSleepTacos

    EatSleepTacos MOBTOWN OFFROAD AMBASSADOR

    Joined:
    Mar 24, 2015
    Member:
    #151688
    Messages:
    42,001
    Gender:
    Male
    First Name:
    Randy
    Chesapeake, VA
    Vehicle:
    4x4 2005 SR5 AC 6MT POOP Edition
    That sounds like a sunroof issue and not a prinsu issue, even if the prinsu exacerbated the problem. We’re getting off topic though.
     
    Tim1o9 [OP] and Trident904 like this.
  15. Jul 5, 2018 at 5:23 PM
    #15
    OriginalMan

    OriginalMan Well-Known Member

    Joined:
    Apr 28, 2018
    Member:
    #251976
    Messages:
    759
    Gender:
    Male
    Oahu 808
    Vehicle:
    2017 TRD OR 4x4
    Bilstein 5100/888; 5160/AAL; SCS Ray10 Limited Gold; 285/70 Cooper STT PRO; AVS; OVTuned; Prinsu Cabrac; RCI Bedrack; TC Bed Stiffner
    :rofl:
     
    Trident904 likes this.
  16. Jul 5, 2018 at 5:29 PM
    #16
    vicali

    vicali tirekicker

    Joined:
    May 20, 2010
    Member:
    #37503
    Messages:
    739
    Gender:
    Male
    First Name:
    mike
    Kam,BC
    Vehicle:
    2017 TRD Sport 1D6
    Have the deflector on lowest setting with no weatherstrip.
    Never had a problem.
     
    Lt. Dangle likes this.
  17. Jul 5, 2018 at 5:37 PM
    #17
    here4cake

    here4cake Well-Known Member

    Joined:
    Nov 19, 2017
    Member:
    #236447
    Messages:
    621
    +1.

    Had one, sold it. Utter shit.
     
    Trident904 likes this.
  18. Jul 5, 2018 at 5:41 PM
    #18
    jowybyo

    jowybyo Mobtown Offroad

    Joined:
    Nov 19, 2013
    Member:
    #116863
    Messages:
    3,773
    Gender:
    Male
    First Name:
    Joe
    Baltimore, MD
    Vehicle:
    '14 MGM DCSB Postrunner 4wd Conversion, Debadged
    42 Designs Catch Can Mobtown Offroad Ribbed Tailgate Skin Mobtown Offroad Tailgate Cap Mobtown Offroad Locking Storage Doors Mobtown Offroad Utility Bed Bars (Prototype)
    Uh, say what? It has nearly 3x the bending stiffness for a given cross section.
     
    Tim1o9 [OP] and MESO like this.
  19. Jul 5, 2018 at 7:15 PM
    #19
    Doozy4212

    Doozy4212 upTOP Overland Technical Design and Application

    Joined:
    May 22, 2016
    Member:
    #187612
    Messages:
    2,227
    Gender:
    Male
    First Name:
    Drew
    Littleton, CO
    Vehicle:
    2017 TRD OR DCSB SUPER WHITE
    All the things...click the link in sig
    But dont you think in this application it would be negligible? Its not like there is that much force upon the wind fairing
     
  20. Jul 5, 2018 at 7:25 PM
    #20
    OnHartung'sRoad

    OnHartung'sRoad -So glad I didn't take the other...

    Joined:
    Jul 24, 2017
    Member:
    #224878
    Messages:
    4,915
    somewhere in the Mojave Desert
    Vehicle:
    2017 Tacoma TRD 4x4 (formerly 2002 TRD 4x4, 1995 4x4 4Runner, 1985 4x4 Toy PU) ... and RIP’s (rust in pieces) to a Bronco II 4x4 & S10 Blazer 4x4
    image.jpg

    Try using the weatherstrip mentioned by others on the bottom edge and push the fairing down, the top part back and the bottom part foreward while tightening it in the lowest setting so it sits just above the roof at the lowest angle to the wind possible without actually touching the roof (you dont want leaves and such getting caught behind it). This worked best for me and it is stable going 70mph in a heavy headwind.

    I don’t know why a few others hated them, but for me it was the best solution for use as a RTT base and a elevated photography platform I can stand on with a tripod (on a diamond plate base).

    I like the cabrack so much, I even made a matching lasercut aluminum rack like the Prinsu to go on top of my MX shell:
    image.jpg
     
    Last edited: Jul 5, 2018
    jnjoiwngs and Tim1o9 [OP] like this.

Products Discussed in

To Top