Having lowering brackets made - Couple of questions - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 27 (permalink) Old 08-27-2013, 03:11 PM Thread Starter
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Having lowering brackets made - Couple of questions

Hey all,

I'm going to have a local machinist make some lowering brackets for the
rear suspension based on some designs I found on the forum.

Hopefully someone can answer some questions I have about the designs. I searched all the posts relating to lowering brackets but couldn't find the answers I was looking for.

One design is flat and one is offset.(see link below for links to the designs.)

What is the difference? If there a benefit to one over the other?

One more thing; in the this thread...

https://www.vn750.com/forum/showthread.php?t=8872

kawaBengie mentions the axle holes need to actually be bigger than what the diagram indicates... At a glance and without measuring, it does look small.

I want to make sure I give an accurate design to the machinist.

Cheers,

1986 VN750
33,000 km's
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post #2 of 27 (permalink) Old 08-27-2013, 03:34 PM
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The axle hole is 9/16" the difference between the offset and non offset is right and left... another problem is that 1/4" material is too thick to put your nut back on with out either milling the axle hole out, or doing as I did and make a spacer and sandwich the shock between to pieces of meta, more like a car's spring shackle.



this pic shows the spacer

this picture you can see how I made the brace


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post #3 of 27 (permalink) Old 08-27-2013, 05:03 PM
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Cant get no better than that !...yer a star, Slim....



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post #4 of 27 (permalink) Old 08-27-2013, 05:32 PM
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a lot of peeps gave me hell about em back when I did them.. 4 years ago now, and still not a bend or tweek to em... and still haven't welded the spacers on like I had planned... Ohh one other thing.. I had to make new shock bolts... 9/16"X long enough no threads were left on the shoulder between shock and plates, torqued the locking nuts down, and then cut off the remaining thread. Now no more threads sticking through.
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post #5 of 27 (permalink) Old 08-27-2013, 09:20 PM
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Quote:
a lot of peeps gave me hell about em back when I did them..

I can pretty much picture who he/they were, lol....dont mess with a "finely engineered machine"....



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post #6 of 27 (permalink) Old 08-27-2013, 10:10 PM
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This is what I came up with by using B-man's idea. You can go to my profile and see them on the bike.
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02 honda sabre 1100
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post #7 of 27 (permalink) Old 08-28-2013, 08:06 AM Thread Starter
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Hey Slim,

I don't quite understand how the spacer and a brace to sandwich the shocks in between(as you said, like a cars spring shackles) allows you to get the nut onto the axle. Where are you making up the extra space on the axel? Its still 1/4" steel plate bracket fitted onto the axle with or without the spacer and brace, correct. F

It would seem to me that you would gain no more "axle" real estate" by doing this. I must be mis-understanding something.

Would having the brackets made out of 3/16" steel give me enough room to get the axle nuts back on without having to use spacers and braces?

Also, the offset bracket goes on which side of the bike? I'm guessing it'll be pretty obvious when I go to do a mockup. I guess it's designed that way to clear part of the gear casing.. ?

1986 VN750
33,000 km's
Coastered
R/R relocated
Yuasa MF Battery
Iridium plugs/new wires & boots.
Custom 900 Seat
Bar end mirrors
Lowered headlight
Carbs cleaned
Gold Phillings is offline  
post #8 of 27 (permalink) Old 08-28-2013, 11:49 AM
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I used 1/8" flat bar for all for pieces. The axle only goes through the the two back plates. The outer plates are to give support to the shock and keep the back plates from reeking.
So 1/8 + 1/8 = 1/4, where the designs you posted are made from 1/4" stock. 1/4 + 1/4" = 1/2". 1/2" leaves only a couple of threads for the axle nut to screw on.

3/16" stock still witty give you enough
Threads for the nut. I tried that after the 1/4" brackets failed.
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Last edited by slimvulcanrider; 08-28-2013 at 11:54 AM.
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post #9 of 27 (permalink) Old 08-28-2013, 12:24 PM Thread Starter
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Okay, that makes more sense now. Thanks for the clarification.

Just one last question on the off-set bracket. It seems a few folks on the forum have made there own brackets without making one of them off-set... ?

Does one of them absolutely need to be off-set. I'm just trying to avoid any complications surprises when once I try to get these brackets on the bike.

1986 VN750
33,000 km's
Coastered
R/R relocated
Yuasa MF Battery
Iridium plugs/new wires & boots.
Custom 900 Seat
Bar end mirrors
Lowered headlight
Carbs cleaned
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post #10 of 27 (permalink) Old 08-28-2013, 01:27 PM
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no, the offset isn't necessary.
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