Author Topic: "Zasshuken" Monoshock cb750 build  (Read 24705 times)

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Offline cbxr750

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Re: cb750 cafe monoshock build
« Reply #25 on: January 28, 2016, 02:26:06 PM »
Retro, can you shoot me a PM? gotta bounce some ideas off you. struggling to find some missing parts for the rear and i would like to pick your brain on shortening the arm.
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Offline Retro Rocket

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Re: cb750 cafe monoshock build
« Reply #26 on: January 28, 2016, 02:29:02 PM »
here's a pic of the pivot area brace after removing the monoshock section...



Pm me your questions mate... ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
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Offline cbxr750

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Re: cb750 cafe monoshock build
« Reply #27 on: February 02, 2016, 12:10:32 PM »
Small update: Have a guy coming Saturday for the Radian. Hopefully all goes well with that and I will be purchasing parts once the money is deposited. Looks like Punxsutawney Phil didnt see his shadow so spring is coming quick. I better get to work haha. Hope to have the majority of the bike done by May. Yes. I am ambitious.
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Offline cbxr750

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Re: cb750 cafe monoshock build
« Reply #28 on: February 07, 2016, 02:56:36 PM »
Sold the radian yesterday. Guy ended up dropping it on the way home  :'( nothing major but it needs some fixing. Just placed an order for some parts and will be buying the cognito parts soon as well. Very excited to get the project going again.
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Offline vonvendetta

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Re: cb750 cafe monoshock build
« Reply #29 on: February 07, 2016, 04:34:05 PM »
To add to a couple things. Going to a gsxr front, I would go with a gps speedo. Those cheap sensor ones don't work well at all and have you running wires that you can't hide. Picture attached before I added the hoop etc.

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Offline cbxr750

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Re: cb750 cafe monoshock build
« Reply #30 on: February 08, 2016, 12:07:56 PM »
To add to a couple things. Going to a gsxr front, I would go with a gps speedo. Those cheap sensor ones don't work well at all and have you running wires that you can't hide. Picture attached before I added the hoop etc.

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Very cool bike! I ordered a speedo already. I have used the sensor speedos before. A bit tricky to dial in but I have some experience. The wires I can deal with for the time being. I just do not have the money for something like that at this time. I am trying to keep the budget on track. Which is extremely difficult!
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Offline cbxr750

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Re: cb750 cafe monoshock build
« Reply #31 on: February 12, 2016, 08:19:05 AM »
Ricks rectifier, coils, headlight and levers came in. Placed my order with Cognito for rear sets, bracket, stem, top triple, linkages. have the speedo in transit and the rest of the ignition. picked up some sheet metal and tube for the cowl and seat hoop. rolling along nicely! spending vday mocking up the bike to take measurements for the rear suspension and hopefully get the hoop done and mock up the cowl and electronics tray.

« Last Edit: February 12, 2016, 08:22:43 AM by cbxr750 »
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Offline SOHC4 Cafe Racer Fan

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Re: cb750 cafe monoshock build
« Reply #32 on: February 12, 2016, 03:35:31 PM »
Any details on that multi-LED headlight? 

It should be bright enough that you don't end up riding into walls:


;)
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 cbxr750

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Re: cb750 cafe monoshock build
« Reply #33 on: February 13, 2016, 08:31:08 AM »
 ;D
HAHA it may improve my sight a bit.
http://www.amazon.com/gp/product/B00YC6JGSU?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00
this is the link. its for a Jeep so I will need to make some custom brackets to mount it up right.
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Offline SOHC4 Cafe Racer Fan

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Re: cb750 cafe monoshock build
« Reply #34 on: February 13, 2016, 04:06:38 PM »
;D
HAHA it may improve my sight a bit.
http://www.amazon.com/gp/product/B00YC6JGSU?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00
this is the link. its for a Jeep so I will need to make some custom brackets to mount it up right.

That's downright cheap. Let us know how it holds up.
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 cbxr750

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Re: cb750 cafe monoshock build
« Reply #35 on: February 15, 2016, 12:14:07 PM »
Got some work done on the bike saturday. not a lot but i started mocking up the tail section. This is a pretty rough idea. I wanted to get a visual to tweak and measure and then plug into google sketchup for a model. The entire section needs to be shortened and I may curve the seat a bit. cowl will be shortened, heightwise as well. also set the headlight to get a visual. I love it!



Swung by the IMS in chicago on sunday and met Evan from Speakeasy Motors in New York. Cool dude and he brought a badass ducati arm swapped 750 he built for a customer.


Spotted this beauty as well. Nice cafe on display for Progressive Insurance. complete with a Kott tank.
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Offline SOHC4 Cafe Racer Fan

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Re: cb750 cafe monoshock build
« Reply #36 on: February 15, 2016, 03:41:37 PM »
Swung by the IMS in chicago on sunday and met Evan from Speakeasy Motors in New York. Cool dude and he brought a badass ducati arm swapped 750 he built for a customer.


Spotted this beauty as well. Nice cafe on display for Progressive Insurance. complete with a Kott tank.


That was some work to shoe-horn the Ducati Monster arm into the swingarm pivot.  I once considered it but it adds a LOT of weight.

FYI - the cafe "complete with a Kott tank" IS a Kott bike -- his seat, tank emblem, oil tank and plating touches.  Engine likely build by his engine guy in Cerritos.
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 cbxr750

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Re: cb750 cafe monoshock build
« Reply #37 on: February 15, 2016, 05:01:38 PM »


That was some work to shoe-horn the Ducati Monster arm into the swingarm pivot.  I once considered it but it adds a LOT of weight.

FYI - the cafe "complete with a Kott tank" IS a Kott bike -- his seat, tank emblem, oil tank and plating touches.  Engine likely build by his engine guy in Cerritos.
[/quote]

It looks beefy in there! Im glad i went with the gsxr arm. Its less weight then stock. And the Kott bike. Learn something new everyday  ::) I just figured it was his tank lol. Its funny, I go to bike show that has mostly new bikes and harleys with some choppers and a stretched gsxr or 2 and these were the only 2 bikes i liked haha
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Offline SOHC4 Cafe Racer Fan

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Re: cb750 cafe monoshock build
« Reply #38 on: February 15, 2016, 06:19:56 PM »
Well, it's Dustin's insomuch as he pounded knee indents into a Honda tank and then affixed a KOTT metal logo onto the side.  ;) 
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 cbxr750

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Re: cb750 cafe monoshock build
« Reply #39 on: February 22, 2016, 09:40:38 AM »
Small update over the weekend. Fixed a slight hole in frame from the passenger pegs. Cognito parts came in. Ordered a 2006 R1 shock for the rear since it was a quarter of the price and the Gixxer guys said it will work. Hopefully have the suspension wrapped up by the end of the week. Pressed the new stem and bearings in. Decided to go with a fiberglass cowl so that i can achieve better quality as i cannot shape metal easily at my house. Also hope to have the hoop done this week and i can start making the electronics tray and oil tank.


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Offline cbxr750

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Re: cb750 cafe monoshock build
« Reply #40 on: February 22, 2016, 12:12:36 PM »
2 questions for you guys.
1) what battery would you recommend? here is the one i was looking at. http://www.amazon.com/dp/B00COT25Y4/ref=wl_it_dp_o_pC_S_ttl?_encoding=UTF8&colid=32CK3DC47GUVP&coliid=ICME93SIP5F3

2) what capacity does my oil tank need to be and where can i get braided lines?
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Offline SOHC4 Cafe Racer Fan

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Re: cb750 cafe monoshock build
« Reply #41 on: February 22, 2016, 01:48:14 PM »
I am not the biggest fan of Anti-Gravity.  Of the lithium-ion batteries, they seem to be more fragile.  If you get a short in the reg/rec, they burst.  No bueno.

If you are committed to Li-Io, then I would recommend Shorai.  Remember you will need a special charger for Li-Io.  A Battery Tender will not play well with these batteries.

The Li-Io tend to hold their charge well, but if you have a little bit of parasitic drain, they will run out.  If they get beyond a certain voltage, there is not reviving them -- unlike conventional gel batteries.

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 cbxr750

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Re: cb750 cafe monoshock build
« Reply #42 on: February 22, 2016, 02:08:06 PM »
I am not the biggest fan of Anti-Gravity.  Of the lithium-ion batteries, they seem to be more fragile.  If you get a short in the reg/rec, they burst.  No bueno.

If you are committed to Li-Io, then I would recommend Shorai.  Remember you will need a special charger for Li-Io.  A Battery Tender will not play well with these batteries.

The Li-Io tend to hold their charge well, but if you have a little bit of parasitic drain, they will run out.  If they get beyond a certain voltage, there is not reviving them -- unlike conventional gel batteries.

Thanks for the tip! I just need one that is small and can be mounted in different orientation if necessary. Will the Shorai work for that? what kind of CA and AH will i need? i am running LED everything and new ricks rec/reg as well as dynateck coils and ignition.
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Offline SOHC4 Cafe Racer Fan

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Re: cb750 cafe monoshock build
« Reply #43 on: February 22, 2016, 02:40:11 PM »
With LED lights you will not need a huge battery.

Take a look at the Form Factor #1 or #2 batteries compared with the Form Factor #5 (which is the stock CB replacement).  You can shrink down to a much smaller space and still get 18AH and 270CCA.

http://shoraipower.com/battery-specifications
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 cbxr750

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Re: cb750 cafe monoshock build
« Reply #44 on: February 22, 2016, 05:24:19 PM »
Sweet thanks!

So i have the r1 shock sitting on the counter when i got home from work. 30 minutes of grinding and it bolts right in to the linkage on the gsxr. One step closer!

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Offline cbxr750

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Re: cb750 cafe monoshock build
« Reply #45 on: February 23, 2016, 06:37:57 AM »
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Offline cbxr750

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Re: "Zasshuken" Monoshock CB750 build
« Reply #46 on: February 24, 2016, 09:32:39 AM »
Thanks for the tips on the battery. Im going to make a paper model of the shorai to see how it fits. Came up with a cool name for the build. Zasshuken is Japanese for the mutt. Quite fitting since the bike has parts from all different years, makes and models. Hit a bit of a snag with the rear wheel. Turns out the guy sold me a 1992 gsxr 1100 wheel which is almost 2 inches wider than the 88 wheel. I am working on a solution for that now. Ordered bolts and such for the linkage so hopefully can attach the arm to the frame soon. Still need to bend my hoop and integrate the tail light then start the electronics tray. its a long road ahead but i am making strides. Heres a couple pictures of the rear wheel clearance.


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Offline Retro Rocket

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Re: cb750 cafe monoshock build
« Reply #47 on: February 24, 2016, 02:05:47 PM »
The 88 wheel is an 18, not a 17, it should be a 18x 4.5, the 88 front is 18x2.75
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 cbxr750

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Re: cb750 cafe monoshock build
« Reply #48 on: February 24, 2016, 02:39:38 PM »
The 88 wheel is an 18, not a 17, it should be a 18x 4.5, the 88 front is 18x2.75
Correct this is a 17x5.5 off of what i believe is a 92
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Offline cbxr750

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Re: "Zasshuken" Monoshock cb750 build
« Reply #49 on: February 28, 2016, 07:37:31 PM »
Huge progress this weekend. Spent 3 full days on her with some help from my best friend. Got the cognito stem and triple on. Hoop bent and welded in. Suspension setup welded in. Shes sitting on her own weight now. Just need the lower bracket made for the linkage.


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