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Wiper arc length
#1333113 Sat Nov 09 2019 04:53 PM
Joined: Sep 2019
Posts: 19
C
1953 3100 5win 325
My 53 3100 has a 12v conversion and a electric wiper motor. I’ve noticed my driver side wiper travels about 85 degrees along its path while the passenger side is easily 95+ degrees.

The drivers side of my split windshield leaves a good portion un-wiped.

Has anyone else experienced this? Is there a solve for it?

From a pure physics/geometry perspective I could “simply” lengthen the connection arm on the driver side wiper mast/knurl and that would increase the arc length. Wanted to throw it out there before I went that route.

Re: Wiper arc length
Carpas13 #1333125 Sat Nov 09 2019 06:33 PM
Joined: Dec 2018
Posts: 517
A
Shop Shark
Yeah use Rain-X and walk away......LOL





Re: Wiper arc length
Apache1 #1333127 Sat Nov 09 2019 06:42 PM
Joined: Sep 2019
Posts: 19
C
1953 3100 5win 325
Already did that. chug

Just want to see if there was another option.

Re: Wiper arc length
Carpas13 #1333128 Sat Nov 09 2019 07:03 PM
Joined: Dec 2018
Posts: 517
A
Shop Shark
Seriously, my 59 has wiper arms w/o a motor...just for looks.





Re: Wiper arc length
Carpas13 #1333195 Sun Nov 10 2019 05:09 AM
Joined: Jun 2011
Posts: 3,451
E
Shop Shark
Rainex is not much good with snow!

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
Re: Wiper arc length
EdPruss #1333220 Sun Nov 10 2019 06:45 PM
Joined: May 2001
Posts: 1,436
W
Shop Shark
I went with an LMC motor and concluded after much, much analysis that one of my arms needed lengthening. Maybe there was another adjustment that I didn't know about. The picture shows the lengthened arm. I made 2 of the holes elongated slots for adjust-ability, if needed (wasn't needed). They work great.

Attached Files
WiperArm.jpg (39.95 KB, 82 downloads)

1948 3/4-Ton 5-Window Flatbed Chevrolet

28 Years of Daily Driving. Now with a '61 261, 848 head, Rochester Monojet carb, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
Re: Wiper arc length
Carpas13 #1333489 Tue Nov 12 2019 06:31 PM
Joined: Dec 2002
Posts: 3,629
Moderator - The Electrical Bay and Rocky Mountain Bolters
Ed Pruss, I refuse to allow my old rides out in that stuff they put on the roads to melt the snow! I wonder if the instructions for the wiper explain how to correct the situation?


Another quality post.


Real Trucks Rattle

HELP! The Paranoids are after me!
Re: Wiper arc length
Carpas13 #1333502 Tue Nov 12 2019 07:32 PM
Joined: Jul 2000
Posts: 979
G
Shop Clutterist
Do you know the make and model of the 12v conversion motor? The sweep might be adjustable. The bar on the end of the armature may be adjustable. If there is room, you might be able to change the position of the motor.


Gord
----
1954 1/2 ton 235 4 speed
Re: Wiper arc length
Carpas13 #1333859 Fri Nov 15 2019 12:54 PM
Joined: Sep 2019
Posts: 19
C
1953 3100 5win 325
Gord - I have tried in vain to determine the maker of the wiper motor. Short of pulling the unit out (which I am trying to avoid until I know what my ‘fix’ plan is) the best I can find are two serial #s. One is likely a “quality control” #.

QC 200801

And the other is...

EX 013L 12V

No other markings or ID on the unit. Anyone able to discern the manufacture from this?


Moderated by  Rusty Rod 

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