« previous next »
Pages: [1]   Go Down

Author Topic: Need help with Cognito rearset bracket  (Read 1331 times)

0 Members and 3 Guests are viewing this topic.

Offline rangerdave1

  • Full Member
  • *
  • Posts: 22
Need help with Cognito rearset bracket
« on: October 12, 2018, 06:06:11 PM »
I have Cognito rearset brackets and tonight, I learned that the pivot bolt is to short. Now these brackets are similar to other brackets in how they mount to the bike.. They use the pivot bolt and engine bolts to mount to the frame. The issue is that the extra thickness of the brackets doesn't allow for the nut to thread on because the bolt is not long enough. The brackets are about 3/8" thick each. I am considering milling down where the bolt is on the bracket however unless I removed almost all the thickness, I don't think it will be enough any way

I'm sure others have had this issue and wondering what have been the solution.

1. Are there longer pivot bolts available? possibly from another yeah/model..
2. Should I get my stock pivot bolt lengthened at a machine shop?

And before anyone ask why I did not get Cognito's aluminium bracket, I chose the steel version because I felt their aluminium although beautiful, would not fit the look I am trying to achieve. I am trying to avoid a modern look on this bike. The rearset in the photo is not likely the one I will keep on the bike.

Thanks!


 
Logged

Offline seanbarney41

  • not really that much younger than an
  • Really Old Timer ...
  • *******
  • Posts: 10,835
Re: Need help with Cognito rearset bracket
« Reply #1 on: October 12, 2018, 06:24:23 PM »
I think a swingarm pivot from a 77/78 F will get you the length needed as this bike uses the swingarm pivot as mounts for rather thick aluminum plates that mount the passenger pegs(pass. pegs removed in this pic).20181006_154627 by Sean Barney, on Flickr

I have a similar set of those steel Cognito brackets for a 550 and they are easily twice as thick as necessary...unless going motocrossing and you weigh about 400 pounds
« Last Edit: October 12, 2018, 06:26:53 PM by seanbarney41 »
Logged
If it works good, it looks good...

Offline rangerdave1

  • Full Member
  • *
  • Posts: 22
Re: Need help with Cognito rearset bracket
« Reply #2 on: October 12, 2018, 06:31:02 PM »
Oh that might be exactly what I need.

Does any one have a 77/78 pivot bolt they could measure the length??

Yes the Cognito bracket is very thick and I agree is likely twice as thick as it needs to be. But it is very nice.
Logged

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,058
Re: Need help with Cognito rearset bracket
« Reply #3 on: October 12, 2018, 10:20:48 PM »
They should just tap one side to fit the swingarm bolt when they make them.

 If you have the taps, and a lathe, you could make an insert or a nut.
Logged
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline calj737

  • Really Old Timer ...
  • *******
  • Posts: 21,040
  • I refuse...
Re: Need help with Cognito rearset bracket
« Reply #4 on: October 13, 2018, 04:26:05 AM »
Quote from: 754 on October 12, 2018, 10:20:48 PM
They should just tap one side to fit the swingarm bolt when they make them.

 If you have the taps, and a lathe, you could make an insert or a nut.
They do. The OPs picture is NOT a Cognito bracket.
Logged
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline rangerdave1

  • Full Member
  • *
  • Posts: 22
Re: Need help with Cognito rearset bracket
« Reply #5 on: October 13, 2018, 08:39:05 AM »
Quote from: calj737 on October 13, 2018, 04:26:05 AM
Quote from: 754 on October 12, 2018, 10:20:48 PM
They should just tap one side to fit the swingarm bolt when they make them.

 If you have the taps, and a lathe, you could make an insert or a nut.
They do. The OPs picture is NOT a Cognito bracket.

I bought them from their website and got them yesterday.  ::)

https://cognitomoto.com/collections/rearsets/products/cb750f-rearset-brackets-gsxr-master-cylinder-conversion

Logged
Pages: [1]   Go Up
« previous next »