BluePrint Engines

Visit our community sponsor

Thanks Thanks:  0
Likes Likes:  0
Results 1 to 7 of 7

Thread: Wiper Drag

  1. #1
    Junior Member
    Join Date
    Feb 2011
    Posts
    10
    Post Thanks / Like

    Wiper Drag

    Ok...Wipers on, but the drag on the windsheild seems excessive. I tightened up the gearboxes so I now have no more slippage, but the wipers sutll hang up. Seems like excess down force on window. If I put windex on I can get a couple of rotations but not alot before the motor stops. Seems to be a lot of friction. Any thoughts or ideas to improve? Looking to get through inspection this week and need the wipers moving. Do you think a coating of rain-x on the windsheild would solve the problem?

    Thanks in advance.

    Squid

  2. #2
    Senior Member edwardb's Avatar
    Join Date
    Feb 2011
    Location
    Lake Orion, Michigan
    Posts
    10,575
    Post Thanks / Like
    Something doesn't sound right. I've never seen the wipers themselves cause the kind of drag you're describing. Especially to the point of stopping the motor. They just don't push down that hard in my experience. Even on a dry windshield which I don't recommend anyway. How do they run without the wiper arms? I'm wondering if you have some king of excessive drag in the mechanism itself. Hopefully not.

    BTW, when I'm testing them dry, I usually a put a paper towel under each wiper. That lasts indefinitely for testing and has low drag.
    Last edited by edwardb; 05-29-2018 at 08:24 PM.
    Build 1: Mk3 Roadster #5125. Sold 11/08/2014. Build 2: Mk4 Roadster #7750. Sold 04/10/2017. Build Thread
    Build 3: Mk4 Roadster 20th Anniversary #8674. Sold 09/07/2020. Build Thread and Video. Build 4: Gen 3 Type 65 Coupe #59. Gen 3 Coyote. Legal 03/04/2020. Build Thread and Video
    Build 5: 35 Hot Rod Truck #138. LS3 and 4L65E auto. Rcvd 01/05/2021. Legal 04/20/2023. Build Thread. Sold 11/9/2023.

  3. #3
    Senior Member John4337's Avatar
    Join Date
    Feb 2011
    Location
    Copperhill, TN
    Posts
    425
    Post Thanks / Like
    Mine work fine, but the general consensus is to never run them dry. Wet the windscreen or use the paper towel trick

    John
    Last edited by John4337; 05-29-2018 at 08:16 PM.
    FFR #7388 - Mk 4 Complete Kit w/ IRS, Ordered 10/21/10, Delivered 12/8/10. 302 with FiTech and Under Car Exhaust, Heat & A/C, Rod Top. Hard top and shop built side curtains added 2023.

  4. #4
    Not a waxer Jeff Kleiner's Avatar
    Join Date
    Feb 2011
    Location
    Bloomington, Indiana
    Posts
    8,081
    Post Thanks / Like
    I'm another who always puts a paper towel between the blades and glass when running them dry. Did you lube the wheelboxes and cable liberally? I Lots of white grease is your friend when dealing with this fine example of British monkey motion engineering

    Jeff

  5. #5
    Member cwrandolph's Avatar
    Join Date
    Feb 2011
    Location
    Sidney, OH
    Posts
    50
    Post Thanks / Like
    As mentioned above, I would try running without the blades to find out if the binding is coming from the gearboxes or the cable. Any tight bends or kinks in the tubing? Did you over tighten the gearboxes? Good luck!

  6. #6
    RR20AC's Avatar
    Join Date
    Jul 2015
    Location
    Puyallup/WA
    Posts
    394
    Post Thanks / Like
    Blog Entries
    1
    When making up the flair ends of the tubes for the assembly I noticed that the tubes themselves would crimp slightly smaller just forward of the flair. I reamed mine out and fixed the bind.
    20th Anniversary MK4 Roadster, #8752, 18 of 20, Delivered 12/03/15, 1st Start 01/28/2017, off to paint 4/13/2017, Forte 351w/ Holley EFI, Forte throttle linkage, TKO 600/Forte Hyd. Clutch, UniSteer Electra Steering, RT's turn Signals, many Breeze parts, Paint by the Jeff Miller. Finished on 10/08/2017. 500 mile inspection on 10/21/2017, 3000 mile inspection on 1/14/19.

  7. #7
    Senior Member Crawleyscobra's Avatar
    Join Date
    Feb 2011
    Posts
    108
    Post Thanks / Like
    After doing all the different things listed in the forums to address all the various wiper issues, I noticed I had this exact issue too. What I did was replaced the springs in the wipers that press them onto the windshield. The springs were very strong, so I just found some at Lowes that were softer. Now they work like a charm.
    FFR6682 - received 7/30/08 - MK 3.1 complete kit, Forte built Ford Racing BOSS 427W(475HP/500lbs), TKO600, Power steering, Power Brakes, Hydraulic Clutch, VPM Front/Rear sway bars, Bump steer kit, SAI mod, 13"Front/11.65"Rear Mustang Cobra rotors w/calipers, NITTO NT05s - 255/40R17-Front, 315/35R17-rear,3.55 IRS.
    Visit my Blog: http://crawleyscobra.wordpress.com

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

FFMetal

Visit our community sponsor