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Author Topic: Story of one CB-1  (Read 4458 times)
Velos
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« on: September 27, 2016, 05:08:52 PM »

Hello everybody!
I was recently chatting with a_morti and he said that I should make a post here Smiley
So here it is: a little story of one CB-1 that is living with bears under sounds of balalaika…

Autumn 2004
Few weeks after purchasing.
I already have my first fall.



Winter 2005 - 2006
After first crash.



My first experience of integration non-stock parts.
Front fork, disk and brakes from CB400SF'94.



2007
Frame was prepared for new swingarm integration.



Assembly at home Smiley



Rear cowl and tank are still gloss.




2008
Black matte color.
My friend wished to buy it.
But it still will be stored by me...
At this time I already bought CBR600F4i, so CB-1 goes to stand without riding.




2009
Some photos for our local moto-magazine.




2011
My friend takes cb-1 to his garage.

2014
For 6 years of standing there were no even a one ride on the road by my friend.
I decided to buy my CB-1 back Smiley

2015
I am looking for a spark )
Left engine cover was welded for 6 or 7 times (during my ownership).
For last 4 years the engine has never started. So hall sensor finally have missed it’s normal position because of ambient temperature changes.



There also was a mess in carburetors due to 4 years of standing…
I had to replace 1 idle jet and all locking needles.

Video Smiley

2016 – nowadays

Here starts the second “upgrade marathon”.
It is still not finished yet.
When I was buying my CB-1 back I had a goal to make it in a way I always wanted.
The goal is not reached yet, but it becomes closer and closer.
There is no any common sense in this project. There is no goal of money saving (I don’t want to make even a preliminary estimate of the total cost).
I like this bike. He is dear to me as a memory of my father from one hand.
From the other hand I am moved by a desire: “I wish!”   

Fork
I have inadvertently found this one:





This is a stock front end from Ducati 749 with brake calipers )
It is very nice, except the huge diameter of steering axle.
Steering axle is so big that there is no room if you will insert it in CB-1’s frame.
After a long period of thinking there was a decision:





The drawing on a last picture has some mistakes, which were corrected during machining (in case if someone else will decide to perform this madness).

New steering axle for stock CB-1’s bearings:



Upper 749 bridge is beautiful, but it’s also not applicable for installation. There is a huge hole for steering axle and steering damper mount is butting to the fuel tank.



This 749 fork has a rare diameter (53 mm), so I had the only option: to make my own upper bridge (with blackjack and hookers Smiley ).



And polish it...



Lower stem also needed to be upgraded.



First of all I needed to press in new steering axle.
The other problem is steering limiter. Stock 749 steering limiters didn’t give enough space for steering.
So I decuded to cut it off... And polish )



In assembly:



For steering limiters I came up with this construction:



After measuring stock CB-1 limiters new construction was applied to 749 stem with welding:





And of course polishing. I can’t allow myself not to use it since 2007 Smiley




Wheels
I suppose Italian engineers loves fat sizes Smiley
Diameter of new wheel axle is 25.
So there was no option to keep stock CB-1/CB400SF wheel.
I used wheels from Ducati Monster 800.



After some measurement I realized that it will be impossible to insert Monster rear wheel in NC29 swingarm. In no way…
So I used 5`` wheel from SF400VTEC.
The advantage of using this wheel is that there is no need to remake ant mounts. I had to make only two new spacers.



I used a powder painting .



For rebuilding period I used temporary tyres. They are nearly close to those that I want to use on the road.



BTW, I want to use:
- Front 120/60-17 on a 3.5’’ rim (the rim is Brembo!).
- Rear 160/60-17 on a 5.0’’ rim.
In fact it’s the only change from stock geometry.
All other dimensions stayed the same!

Brakes
I was able to get front brake rotors with front wheel (320mm).



Also I got stock 749 4-pistons brake calipers with front fork.



Despite the fact that wheel and fork a both came from Ducati they still needed an adjustment.
Monster’s front wheel is 10mm (5mm each side) thinner in rotor mount than 759’s wheel.
First I tried to make rotor spacers, but they didn’t match (rotor can’t find his center because of heigh).
Then I tried to develop an adaptor. I even almost finished drawing:



But during drawing I realized that there is no need in such adapter.
The concept is simple:



Rear brake stayed stock from CB-1.

Front master cylinder was used from stock Hayabusa’07 (my second bike Smiley ).
I will test it on the road.

Attachments

I was looking for different options during writing this article in original language. To save the original exposition: I was looking for switches, clutch lever mount, etc.
Clip-ons were used form 749:



Initially I was planning to use sotck CB-1 gauge. So upper bridge was made with mounts for it. But I was unable to cope with myself and bought this:




At the moment of writing original post I didn't decide how to mount it.

Rear shock
I used a CBR893 shock.
I found info about it’s compability on this forum Smiley 
In 2007-2008 I installed NC29 swingarm without progression.
Link.
So I have performed spring swap.
I also took it to hydraulics workshop for service (gas/oil/seal replacement).



At this checkpoint it looked like that:





Fork was “capitally” installed. All attachments were putted for clarity  Smiley

Some time later

Switches and gauge have found their places.
I always was dreaming about separated throttle grip from switch. Now my dream come true ))





Currently I am waiting for brake and clutch levers. I have ordered them from Titax. Those chez guys are not hurrying Smiley
But rearsets are already here!




It is a Sato racing rearser for CBR929/954.
Their quality is perfect and they are compatible with CB-1.
I had to made only two modifications:
-   use stock adapter for shift axle ( I had to pull it out from stock);
-   use additional spacer between frame, because NC29 swingarm is very “fat”.



The only disadvantage is non-folding pegs.
I have used this “spare part” from China Smiley



For headlight I have developed this construction:




It should looks like this:




I am going to use rubber adapters in mounting plates (for compensation of vibrations):




At the moment it looks like this:



PS: sorry for my English Smiley
PPS: during making of this translation I get a photo from a CNC-master:



Next steps:
-   rear cowl/rear subframe/seat modifitcation;
-   piston rings / valve seal replacement (stock);
-   muffler welding;
-   cbr400RR camshaft sawp;
I have read a lot about FCR carbs, but I am not sure I will be able to tune them here (no specialists, no spare parts, no adavantage for road use)…
« Last Edit: March 03, 2017, 06:17:30 AM by Velos » Logged
filterMan
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« Reply #1 on: September 27, 2016, 05:22:34 PM »

Like, just wow! So much time, money and passion.

Great work, when do you think it will be finished?

Thanks for sharing.

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Velos
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« Reply #2 on: September 27, 2016, 05:39:42 PM »

Thanks Smiley
I think I will finish it in spring 2017.
To be honest I have very little time to stay in garage...

PS: I have missed a "Brake" section.
It is on it's place now Smiley
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a_morti
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« Reply #3 on: September 27, 2016, 05:44:23 PM »

Awesome. Just amazing!
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Cam Drive Gear Train Smiley
stussels
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Finally! HondaCB1.org is here!


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« Reply #4 on: September 27, 2016, 07:20:31 PM »

thats some amazing work.  i love to see cb-1's getting breathed on like this!
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'90 CB-1
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« Reply #5 on: September 27, 2016, 07:28:38 PM »

Velos!

JAW ON FLOOR!.

those are the only words that come to mind after reading your story.
 Shocked
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jim dalton
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« Reply #6 on: October 01, 2016, 05:41:48 PM »

I was wondering If you would consider taking my wife in part exchange?
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Velos
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« Reply #7 on: October 02, 2016, 06:30:31 AM »

Headlight mount is ready.










I was wondering If you would consider taking my wife in part exchange?

Sorry, I am not sure that I had understood you right Smiley
Do you want to change your wife for some parts? )
« Last Edit: March 03, 2017, 06:18:15 AM by Velos » Logged
VintageHunter
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« Reply #8 on: October 02, 2016, 03:30:08 PM »

keep goin' Velos....keep goin'. get er done!
she's lookin' awesome.
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jim dalton
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« Reply #9 on: October 03, 2016, 09:17:33 AM »




I was wondering If you would consider taking my wife in part exchange?

Sorry, I am not sure that I had understood you right Smiley
Do you want to change your wife for some parts? )
[/quote]

 Grin Grin Grin
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VintageHunter
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« Reply #10 on: October 03, 2016, 12:19:51 PM »

No....I think he wants to exchange his wife for the "whole" CB1...not just some parts.



I was wondering If you would consider taking my wife in part exchange?

Sorry, I am not sure that I had understood you right Smiley
Do you want to change your wife for some parts? )

 Grin Grin Grin
[/quote]
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kostasCB1
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« Reply #11 on: December 04, 2016, 08:02:39 AM »

Really impressive work, can't wait for the rest! Smiley
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ptlcb1
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« Reply #12 on: January 07, 2017, 11:13:53 PM »

Crazy impressive!!!
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Velos
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« Reply #13 on: January 09, 2017, 08:04:33 AM »

Time to make some keepalive/update.

Engine works have been started.



Inspection after disassembly have showed that it is necessary to replace second gear and rod's bearings.
In addition to this I have also ordered new piston rings, crankshaft's bearings, rod's bolts and nuts and new counter-shaft with root bearings.
It's a pity, but for now it's impossible to order new gears... I had to buy used...
Keep your transmission in safe!









While engine is assembling I have finished my ex upgrade (9 years have past): NC29 progressive linkage.
Bye bye mister "central stand linkage".
Hello mister "progressive shock linkage". Wellcome to the world of aftermarket shocks Smiley









It's a temporary potted welding. Solid welding will be later.
« Last Edit: March 03, 2017, 06:18:59 AM by Velos » Logged
Velos
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« Reply #14 on: January 09, 2017, 08:55:02 AM »

Some photos of engine with spare parts:

« Last Edit: March 03, 2017, 06:19:24 AM by Velos » Logged
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