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Author Topic: Captain Rats - CB750K1 Project  (Read 9468 times)

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Offline captain rats

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Re: Captain Rats - CB750K1 Project
« Reply #50 on: February 22, 2014, 10:16:27 PM »
Quote from: krusty on February 22, 2014, 10:11:08 PM
Is the front wheel in temporarily? Seem to remember the disc being on the other side?

Hah! Yeah I am a goose, it had twin discs when I got it, lucky you mentioned it. I would have been annoyed later. Thanks mate. Always take your book outside to the garage to reference..
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Offline captain rats

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Re: Captain Rats - CB750K1 Project
« Reply #51 on: February 26, 2014, 12:22:05 PM »
Did some inside work tonight. The PO of my bike had left the bike outside with a cracked speedo glass. Over time this filled with water and the internals got quite rusty. I opened them both up to lube and inspect and the speedo would not turn. In the meantime I ordered new faces, and a later K2 - K7 speedo. I swapped the internals over from the later speedo into the housing of the K1. I was surprised that they all fit so well and interchanged. New faces and used the better glass and surrounds from the other later speedos and they came out great.

Super stocked with the result.



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Offline calj737

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Re: Captain Rats - CB750K1 Project
« Reply #52 on: February 27, 2014, 05:38:00 AM »
Cap't - I am uncertain on 750s, but the long bolt in your picture resembles the upper motor hangar bolt on my 550/500s.

Regarding your lower engine mount bolts, a quick look at the parts fiche should indicate the proper length bolt for that position.

Bike looks killer-
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'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 captain rats

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Re: Captain Rats - CB750K1 Project
« Reply #53 on: February 28, 2014, 03:29:32 AM »
Cal.

That's a great idea. I will look at the parts fiche. That will tell me. I usually look at the cmsnl site.

Thanks for the idea!
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Online Stev-o

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Re: Captain Rats - CB750K1 Project
« Reply #54 on: February 28, 2014, 05:11:44 AM »
Just ran across this....subscribed. 

Have you considered Ikon shocks?


http://www.ikonsuspension.com/content/application_lists/application_lists.shtml
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'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Retro Rocket

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Re: Captain Rats - CB750K1 Project
« Reply #55 on: February 28, 2014, 12:50:26 PM »
Hi Rats, Ikon are in NSW as well....  ;)  I've used them for years, good shocks....

81 Boronia Street
Albury North
New South Wales
2640
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750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline Hutch

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Re: Captain Rats - CB750K1 Project
« Reply #56 on: February 28, 2014, 01:06:11 PM »
At under $200, why consider anything other than the Progressive 12 series. 
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Offline SOHC4 Cafe Racer Fan

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Re: Captain Rats - CB750K1 Project
« Reply #57 on: February 28, 2014, 01:15:13 PM »
Quote from: Hutch on February 28, 2014, 01:06:11 PM
At under $200, why consider anything other than the Progressive 12 series.

Because for a few more dollars, the IKONS are better!
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline Hutch

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Re: Captain Rats - CB750K1 Project
« Reply #58 on: February 28, 2014, 01:37:43 PM »
For my application as an example, Ikon 76 series $380 vs. Progressive 12 $190, with a 50% increase in cost are they 50% better... dunno.  Law of diminishing returns.
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Offline SOHC4 Cafe Racer Fan

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Re: Captain Rats - CB750K1 Project
« Reply #59 on: February 28, 2014, 02:15:54 PM »
Quote from: Hutch on February 28, 2014, 01:37:43 PM
For my application as an example, Ikon 76 series $380 vs. Progressive 12 $190, with a 50% increase in cost are they 50% better... dunno.  Law of diminishing returns.

In my opinion, YES they are worth it. I have owned both. I replaced the Progressives with the IKONS. Suspension and brakes are the most important things on your bike.  If you are happy with the Progressives, great.
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline Retro Rocket

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Re: Captain Rats - CB750K1 Project
« Reply #60 on: February 28, 2014, 03:11:40 PM »
Quote from: CB750 Cafe Racer Fan on February 28, 2014, 02:15:54 PM
Quote from: Hutch on February 28, 2014, 01:37:43 PM
For my application as an example, Ikon 76 series $380 vs. Progressive 12 $190, with a 50% increase in cost are they 50% better... dunno.  Law of diminishing returns.

In my opinion, YES they are worth it. I have owned both. I replaced the Progressives with the IKONS. Suspension and brakes are the most important things on your bike.  If you are happy with the Progressives, great.

Progressives are not as good as the Ikons, they are more of a replacement shock than a performance shock, I know guys that race Honda/4's with Ikons and Hagons, don't know any that race with progressives.. You get what you pay for...
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750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline captain rats

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Re: Captain Rats - CB750K1 Project
« Reply #61 on: February 28, 2014, 05:30:41 PM »
A bit more work, got the 290mm shocks from Cycle X on by changing the configuration of the bushings. Its low and firm, not sure how much fashion to put before function. Will ride them and see how it travels, the ikons etc seem like a nice upgrade.

I am going to try run it stock looking and mocked it up a bit. The seat is a bit lower than standard and I think I will just run the rear guard. I have some alloy café seat that looks ok but I might swap it out after I get it signed off by the transport authorities.



Put the carb airpods on it, oil tank and kicked some oil around it. will get the wiring circuit up to a starting level and go from there.



its actually looking quite ghetto, I do prefer it to look a bit like its been dug out from behind a dumpster..

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Offline captain rats

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Re: Captain Rats - CB750K1 Project
« Reply #62 on: March 01, 2014, 11:06:04 PM »
Trying to get my head around this wiring. It sucks!!

I mostly just want to get it started and then go from there. There seems to be a heap of connections that don't seem to match up. The PO had repaired wires over the years and added changed things beyond stock so I dont really know what should go where. The wiring diagrams are a bit of a help but the replacement harness is not exactly matching up. 

One problem I am having is working out what this is? That cylindrical (aluminium) thing behind the coils. It looks factory, has 4 wires out, on the old bike one (Brown with red stripe)went to a red overspeed warning light the other came from a yellow wire that is only in a wrecked handlebar switch mechanism (not yellow with a red stripe) and the other two end up looped into each other. I can see this on any other bikes I have looked at photos of nor in any wiring diagrams. Is it because it is a Japanese bike?




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Offline captain rats

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Re: Captain Rats - CB750K1 Project
« Reply #63 on: March 19, 2014, 03:55:35 AM »
Getting some where now.

Finally got enough stuff on it to get it started. I have a video which I will post up once I get it uploaded. I have two k1's and need to sell one, I prefer original/mostly stock looking bikes but i am resigned to the fact that one needs to be a cafe due to the parts I have. Here is a pic of it, I actually think it might be a bit of fun to ride around and be very hipster in my local city, might have to grow a beard and get some redwings.
« Last Edit: March 19, 2014, 04:41:02 PM by captain rats »
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Offline captain rats

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Re: Captain Rats - CB750K1 Project
« Reply #64 on: March 20, 2014, 03:08:05 AM »
Ok, uploaded the video.

Obviously some bits are missing, I just wanted to get her fired up, seemed like a big milestone then I can sort out the rest. Love the sound of the pipe.

Cb750 k1 motogpwerks pipe sound
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Online Stev-o

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Re: Captain Rats - CB750K1 Project
« Reply #65 on: March 20, 2014, 05:31:03 AM »
Yes, sounds great. 
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'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline tweakin

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Re: Captain Rats - CB750K1 Project
« Reply #66 on: March 20, 2014, 06:34:28 AM »
Congrats on getter her fired!
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Offline Ford40

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Re: Captain Rats - CB750K1 Project
« Reply #67 on: March 20, 2014, 07:17:18 PM »
Quote from: captain rats on March 19, 2014, 03:55:35 AM
Getting some where now.

Finally got enough stuff on it to get it started. I have a video which I will post up once I get it uploaded. I have two k1's and need to sell one, I prefer original/mostly stock looking bikes but i am resigned to the fact that one needs to be a cafe due to the parts I have. Here is a pic of it, I actually think it might be a bit of fun to ride around and be very hipster in my local city, might have to grow a beard and get some redwings.


I like this seat, do you have any info on where its from.
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Offline captain rats

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Re: Captain Rats - CB750K1 Project
« Reply #68 on: March 21, 2014, 02:31:07 AM »
Yeah thanks guys.

About the seat, I got it with a project bike. Think it was from California. I can prob find out if you really want to know.
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Offline captain rats

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Re: Captain Rats - CB750K1 Project
« Reply #69 on: June 18, 2014, 01:09:15 AM »
Have been quietly working away. It is amazing how much you learn by working on these bikes. I am so glad I have a few other bikes in various states of array to steal parts from.

Carbs were a real pest to get set right. Its amazing how many times this forum combined with Hondamans book have helped.

Here it is as she sits. I still have to sort a few more things out to get rego. It is too loud so I baffled the sh!t out of the GPwerks pipe to quieten it down.

This is close to what it will look like, I have had to do some things for rego. Wish me luck to pass inspection and I will be on the road.

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Online Stev-o

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Re: Captain Rats - CB750K1 Project
« Reply #70 on: August 23, 2014, 03:26:47 PM »
Good Luck....is it on the road?  Looks great...
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'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........
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