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Offline Dafat1

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18 inch front and back wheels cb750
« on: September 05, 2015, 02:40:09 PM »
Has anyone here ever laced a 18inch rim to a 750/550 front hub? If yes, what lenght of spokes did you use? I have a stock 18inch rear rim and want to lace it up to the fronthub.
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Offline FunJimmy

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Re: 18 inch front and back wheels cb750
« Reply #1 on: September 05, 2015, 04:10:46 PM »
Both wheels on the Cafe Interceptor are 18".
Buchanan's did the wheel build and could sell you the required length spokes to do it yourself.
Give them a call.
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Offline SOHC4 Cafe Racer Fan

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Re: 18 inch front and back wheels cb750
« Reply #2 on: September 05, 2015, 04:14:02 PM »
Quote from: FunJimmy on September 05, 2015, 04:10:46 PM
Both wheels on the Cafe Interceptor are 18".
Buchanan's did the wheel build and could sell you the required length spokes to do it yourself.
Give them a call.

Jim,
I was going to suggest the same thing but I think he wanted the specific length since he's in Germany.   :o
;)
Don
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"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)

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Offline FunJimmy

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Re: 18 inch front and back wheels cb750
« Reply #3 on: September 05, 2015, 04:21:36 PM »
Quote from: CB750 Cafe Racer Fan on September 05, 2015, 04:14:02 PM
Quote from: FunJimmy on September 05, 2015, 04:10:46 PM
Both wheels on the Cafe Interceptor are 18".
Buchanan's did the wheel build and could sell you the required length spokes to do it yourself.
Give them a call.

Jim,
I was going to suggest the same thing but I think he wanted the specific length since he's in Germany.   :o
;)
Don

Thanks Don,

I hadn't noticed that detail, but I'm sure Buchanan's would tell him the required length if asked.
Maybe we could make the call to save long distance charges + the 9 hour time difference.
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Offline 754

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Re: 18 inch front and back wheels cb750
« Reply #4 on: September 05, 2015, 05:47:53 PM »
Jimmy get a tape or piece of string and measure yours... Easy peasy..
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Offline SOHC4 Cafe Racer Fan

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Re: 18 inch front and back wheels cb750
« Reply #5 on: September 05, 2015, 06:05:43 PM »
If there's no answer before this Tuesday, I will make the call.
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"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)

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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 johno

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Re: 18 inch front and back wheels cb750
« Reply #6 on: September 06, 2015, 01:24:06 AM »
cycle x have a sale on spokes as we speak.
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Offline Tintop

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Re: 18 inch front and back wheels cb750
« Reply #7 on: September 06, 2015, 06:28:33 AM »
Lacing an 18 to a 550/750 hub (front or rear) is not a problem.  Buchanan supplied the spokes for my conversion (using Borrani's).  From Europe I would try Central Wheel in the UK. http://www.central-wheel.co.uk/
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Offline turboguzzi

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Re: 18 inch front and back wheels cb750
« Reply #8 on: September 06, 2015, 12:14:28 PM »
there's another way, calculate the length!

not that hard, plenty of bicycle sites have online calculators with instructions, used them a few times for racing bicycles i was putting together, the same rules apply.... before you disassemble the wheel, dont forget to count the "spoke cross" and measure rim offsets, critical for the formula.
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Offline gschuld

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Re: 18 inch front and back wheels cb750
« Reply #9 on: September 09, 2015, 12:20:24 PM »
Keep in mind that the spoke angles drilled for a factory wm3 rear drum rim will be different than the spoke hole angles   for a rim drilled for a small diameter front hub.  I have seen drum rear rims spoked to fronts before, but just letting you know that it's not the ideal, or safe depending on who you ask, way to go.  Some of the smaller Honda CB fronts used 18 wm2 rims from the factory.  I believe they all used the same front hub as well.  So if you bought a set of front spokes for a cb400f, for example, that should be exactly what you need.  Please correct me if I'm wrong guys...

George
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Offline 754

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Re: 18 inch front and back wheels cb750
« Reply #10 on: September 09, 2015, 06:17:36 PM »
400f hub is lighter than 750 hub, will try to check spoke centerline of flange and width between. Flanges tonite..
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My next bike will be a ..ANFOB.....

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Offline scottly

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Re: 18 inch front and back wheels cb750
« Reply #11 on: September 09, 2015, 09:15:02 PM »
Quote from: Dafat1 on September 05, 2015, 02:40:09 PM
I have a stock 18inch rear rim and want to lace it up to the fronthub.
Frank, if he is going to use a stock steel rear rim, I doubt he is worried about weight savings. ???
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Offline 754

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Re: 18 inch front and back wheels cb750
« Reply #12 on: September 09, 2015, 09:47:43 PM »
If you use 400 spokes but the hub is not identical. To 750 hub, they may not fit..
 Note .....somebody with a 50 or 750 with a 18 upfront,  Please. Just get out a tape and measure the damn spoke length..
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Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Tim2005

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Re: 18 inch front and back wheels cb750
« Reply #13 on: September 13, 2015, 06:12:43 AM »
Just checked- 550 front hub with 18" rim, the spokes are 19cm, measured from centre of hub hole to face of rim.

400 spokes might work, I haven't measured any,  but you'll only get 36 in a set & you'll need 40 on a 750. I suspect they are also thinner.
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