I made another bracket to support the drivers’ side of the wiper assembly.
I use some aluminum that I had in the shop but bending it created a crack.
Then I tested all of the assemblies with the stock long arm wiper blade. The colors for the different assemblies are the same as yesterdays post. You will notice that I was able to make the wiper stop in the center of the window. I can also change the docking to the passengers’ side like the original ACS cars were made.
Then I compared the sweep difference between the stock wiper arm and the ACS wiper arm. I found that you loose a little bit of area seeing that it is shorter than the ACS arm but the unit would still work for a Hartge setup which is good news. The blue tape in this picture is of the ACS wiper arm compared to the Red which is the stock wiper arm. The Mtech has a Hartge theme so I will use the stock arm on that car and use the ACS arm on the M3. As you can also see in this picture the ACS wiper arm needs a little different timing on the motor stop position than the stock wiper blade.
I made another bracket for the drivers side of the wiper assemble. After some research I found out that what I did wrong was to use the vise to bend the aluminum and your radius should be 1 to 2 times the thickness of the material so it won’t crack. So I used an old wrench that had the proper radius and made the second bracket. It worked perfect.
ACS drilled a hole in the back lip of the gutter at the top of the firewall. Others drilled the hole in the bottom of the gutter which would be easier but would also be in an area where water gathers so I will go with the ACS design once again. I still need to drill the hole but with the bracket is fitted correctly the wiper assembly does not move however without that last bolt I am sure it would develop a rattle. So I have to drill a new hole in the body which is not my favorite thing to do. Then I timed the motor to stop the wiper blade on the passengers side put some soapy water on the windshield and did the final test. It’s hard to see in the picture but the blade stops at the rubber molding on each side of the windshield so there is no need to lengthen the spacer in the wiper assembly arm.
All I need to do now is to take out the prototype wiper arm assembly to use it as a template to fabricate another one for the M3 and then button up both cars. Hopefully I will have it installed on the M3 for the SoCal Vintage meet next month. I hope to see you guys there.
Cheers,
Jim
I use some aluminum that I had in the shop but bending it created a crack.
Then I tested all of the assemblies with the stock long arm wiper blade. The colors for the different assemblies are the same as yesterdays post. You will notice that I was able to make the wiper stop in the center of the window. I can also change the docking to the passengers’ side like the original ACS cars were made.
Then I compared the sweep difference between the stock wiper arm and the ACS wiper arm. I found that you loose a little bit of area seeing that it is shorter than the ACS arm but the unit would still work for a Hartge setup which is good news. The blue tape in this picture is of the ACS wiper arm compared to the Red which is the stock wiper arm. The Mtech has a Hartge theme so I will use the stock arm on that car and use the ACS arm on the M3. As you can also see in this picture the ACS wiper arm needs a little different timing on the motor stop position than the stock wiper blade.
I made another bracket for the drivers side of the wiper assemble. After some research I found out that what I did wrong was to use the vise to bend the aluminum and your radius should be 1 to 2 times the thickness of the material so it won’t crack. So I used an old wrench that had the proper radius and made the second bracket. It worked perfect.
ACS drilled a hole in the back lip of the gutter at the top of the firewall. Others drilled the hole in the bottom of the gutter which would be easier but would also be in an area where water gathers so I will go with the ACS design once again. I still need to drill the hole but with the bracket is fitted correctly the wiper assembly does not move however without that last bolt I am sure it would develop a rattle. So I have to drill a new hole in the body which is not my favorite thing to do. Then I timed the motor to stop the wiper blade on the passengers side put some soapy water on the windshield and did the final test. It’s hard to see in the picture but the blade stops at the rubber molding on each side of the windshield so there is no need to lengthen the spacer in the wiper assembly arm.
All I need to do now is to take out the prototype wiper arm assembly to use it as a template to fabricate another one for the M3 and then button up both cars. Hopefully I will have it installed on the M3 for the SoCal Vintage meet next month. I hope to see you guys there.
Cheers,
Jim
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