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Author Topic: CB750F2 cafe racer rebuild  (Read 6913 times)

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Offline NalydStrea

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Re: CB750F2 cafe racer rebuild
« Reply #50 on: September 18, 2020, 12:57:17 PM »
Today I mounted all the side covers, except for the alternator cover.

I'm missing washer #6 in the picture, part number 28109300000.



Also it's not available anymore at CMSNL.

I'm 100% sure it wasn't there before, because I put everything in bags and labeled them.

Can I use other washers for this as it's "only for the starter motor"?

Anyone has the dimensions of this washer?
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Offline seanbarney41

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Re: CB750F2 cafe racer rebuild
« Reply #51 on: September 18, 2020, 03:41:20 PM »
those get lost a lot as when you remove your stator cover, they will often stay in the cover, only to fall out unnoticed later.
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If it works good, it looks good...

Offline SOHC4 Cafe Racer Fan

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Re: CB750F2 cafe racer rebuild
« Reply #52 on: September 18, 2020, 04:22:43 PM »
If you like bead blasting, vapor blasting will blow your mind on other more delicate parts and finishes.
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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 NalydStrea

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Re: CB750F2 cafe racer rebuild
« Reply #53 on: September 19, 2020, 08:07:05 AM »
Quote from: SOHC4 Cafe Racer Fan on September 18, 2020, 04:22:43 PM
If you like bead blasting, vapor blasting will blow your mind on other more delicate parts and finishes.

I've read a lot about it.
You also don't need to worry about getting glass beads in your engine, which is a great thing.
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Offline NalydStrea

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Re: CB750F2 cafe racer rebuild
« Reply #54 on: September 19, 2020, 08:08:18 AM »
Quote from: seanbarney41 on September 18, 2020, 03:41:20 PM
those get lost a lot as when you remove your stator cover, they will often stay in the cover, only to fall out unnoticed later.

I'm sure it wasn't there, because I always double check those things.
Probably long lost by any of the previous owners.
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Offline NalydStrea

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Re: CB750F2 cafe racer rebuild
« Reply #55 on: September 19, 2020, 10:23:29 AM »
Found the dimensions on this forum:

Quote
Here's the measurements:

OD = 39.8mm (1.568 in)
ID = 12.2mm (0.481 in)
Thickness = 1.0mm (0.0394 in)*

mystic_1

I can laser cut it out of 1mm steel at work, but I think it's supposed to be a hardened steel washer...
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Offline Phil K

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Re: CB750F2 cafe racer rebuild
« Reply #56 on: January 15, 2021, 02:30:44 AM »
Did you manage to manufacture this part?

I am in the same situation but measuring the free play The disc could be 2mm to 2.5mm

What were your findings? ( and did you make a spare)??

Phil
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Offline NalydStrea

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Re: CB750F2 cafe racer rebuild
« Reply #57 on: January 21, 2021, 05:34:50 AM »
Quote from: Phil K on January 15, 2021, 02:30:44 AM
Did you manage to manufacture this part?

I am in the same situation but measuring the free play The disc could be 2mm to 2.5mm

What were your findings? ( and did you make a spare)??

Phil

Yes, I laser cut it out of 1mm thick stainless steel.
But the engine is still out of the bike, so I don't have any findings yet  ;D
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Offline NalydStrea

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Re: CB750F2 cafe racer rebuild
« Reply #58 on: July 15, 2021, 02:08:31 PM »
Long time no see again, as I don't have much (or any) time to work on the bike.
Meanwhile I worked on the frame to fit the seat that I 3D-printed.
I also installed my self-made frame split kit.





Also I ordered some oversize (61.25mm) pistons from CMS that I will balance tomorrow.



A larger update will come soon.
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