Author Topic: Home built rear sets  (Read 849 times)

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Offline timtune

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Home built rear sets
« on: October 12, 2023, 04:15:26 PM »
I want to build rear sets for my latest project (72' CB750K) so I'm looking for some ideas.
Right now I have a long carriage bolt thru the hole in the rear foot peg/ exhaust hanger. That position feels pretty good when I sit on it. So that's kind of the my goal to start.
I'd very much appreciate seeing anything that others have done for inspiration.
( I know they can be purchased but I'd like to at least attempt to build my own)
Thanks in advance.

Offline Rookster

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Re: Home built rear sets
« Reply #1 on: October 13, 2023, 03:16:33 AM »
Unless you have really long legs or are building a lay down drag bike the rear footpeg mounts are too far back.  Ideally you want the rearsets just behind the swingarm spindle.

Scott

Offline newday777

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Re: Home built rear sets
« Reply #2 on: October 13, 2023, 10:45:29 AM »
I want to build rear sets for my latest project (72' CB750K) so I'm looking for some ideas.
Right now I have a long carriage bolt thru the hole in the rear foot peg/ exhaust hanger. That position feels pretty good when I sit on it. So that's kind of the my goal to start.
I'd very much appreciate seeing anything that others have done for inspiration.
( I know they can be purchased but I'd like to at least attempt to build my own)
Thanks in advance.
What is your plan for build style and riding the bike?
Sitting short term tests is different than actually riding it.

You'll probably find that most don't put the rearsets that far back. If you do go that far back, you may find yourself scraping the brake/shift levers and your feet in deep cornering from the angle to get your feet to properly operate the controls(if you can get the rod lengths correct and angles to work properly).
I use the rear pegs as highway pegs. A few years ago, I also had been thinking that was the place to have the rearsets.
As Scott said most have been set up a bit higher than the stock rider footrests and back between the frame downtube and the passenger footpeg hoops.
John Tickle used to fabricate rearsets from aluminum plates and his pegs in the 70s, as pictured below. The plates are fairly simple to fabricate with the right tooling.
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline Rookster

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Re: Home built rear sets
« Reply #3 on: October 13, 2023, 02:26:40 PM »
Hi Stu

Dunstall sold the same rearsets.  That bike you posted looks familiar. One of its many iterations:


This was probably the coolest version of it:


Today, it's back to stock (mostly)


Scott

Offline newday777

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Re: Home built rear sets
« Reply #4 on: October 13, 2023, 03:40:41 PM »
Yah I copied a bunch of pictures when I was thinking about putting on a set
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline timtune

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Re: Home built rear sets
« Reply #5 on: October 13, 2023, 04:02:17 PM »
Thanks Guys!
I'll try some different positions. Now that I see the pics Stu posted and how the plates were attached I'm prepared to move them around some.

Offline seanbarney41

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Re: Home built rear sets
« Reply #6 on: October 13, 2023, 05:15:45 PM »
Agree with the posts above.  And will add...for good cornering control you want to be able to get crouched so that your weight on the footpegs is basically just a head of your butt cheeks.  Drag race guys seem to just want to get into an aerodynamic tuck and be able to hold down the wheelies so put the pegs farther back and lower, sometimes wayyy farther back. Drag guys are not cornering and are only on the bike a quarter mile at a time though. 
If it works good, it looks good...

Offline timtune

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Re: Home built rear sets
« Reply #7 on: October 20, 2023, 07:29:37 AM »
So I started in on my own design. I changed the shape a bit because I some old aluminum plates and I wanted to incorporate their shape to reduce jig sawing. The five black dots are were I intend to drill for mounting the pegs. There will be 5 different positions. Thoughts?

Offline timtune

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Re: Home built rear sets
« Reply #8 on: October 20, 2023, 07:30:37 AM »
Why won't it load both pics at once?????

Offline timtune

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Re: Home built rear sets
« Reply #9 on: October 20, 2023, 07:35:08 AM »
With the pegs back there the original rear brake looks to be in the way. I removed 3/4" from the tube that the lever pivots in and I've shortened the shaft about 1". Also cut the splined portion off the pedal and turned about 1/4" off each side to make much narrower.
In for a penny in for a pound.

Offline Rookster

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Re: Home built rear sets
« Reply #10 on: October 20, 2023, 09:16:35 AM »
The Dunstall / Tickle rearset brake lever is bent out away from the brake pivot.  The splined shaft could be cut at the middle but I left it alone in case I ever wanted to go back to stock (which I did).  The brake lever was in a really nice position but you will lose alot of leverage on the drum because of the shorter length of the lever.  I ended up building a rear disk brake conversion because the drum was ineffective with the shorter lever.  You can see it in the pics.  The bike that Newday777 posted a picture of is the same bike in one of its many guises.  I thought the Dunstall rearsets were really nicely built and were plenty strong.

Scott

Offline timtune

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Re: Home built rear sets
« Reply #11 on: October 20, 2023, 11:05:33 AM »
Yes. All the set ups I've seen so far have a much reduced lever length. So far I've heard few complaints. It is on my mind.

Offline timtune

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Re: Home built rear sets
« Reply #12 on: October 25, 2023, 09:36:26 AM »
Here's a pic of the brake side being mocked up. Note the shortened brake pivot shaft and the reduced length of splined attachment for the pedal. The black tube with nuts is just a place holder for the yet to be determined peg.

Offline timtune

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Re: Home built rear sets
« Reply #13 on: November 05, 2023, 09:07:59 AM »
Except for real footpegs I think the brake side is done.

Offline BenelliSEI

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Re: Home built rear sets
« Reply #14 on: November 05, 2023, 10:35:56 AM »
Looks very nice, and adjustable too.