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Author Topic: 18 inch cb750 rear wheel  (Read 3218 times)

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Offline jwl41085

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18 inch cb750 rear wheel
« on: January 06, 2009, 06:41:02 PM »
i just bought a parts bike and it has an 18 inch rear wheel.. i thought 17 was the biggest? or is this some aftermarket piece.. it looks as if it was fixed up at some point, it has koni shocks dyna ignition and a new mustang seat and lower bars.. any help??
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Offline ekpent

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Re: 18 inch cb750 rear wheel
« Reply #1 on: January 06, 2009, 06:46:45 PM »
The 18 inch is standard and you see a lot of conversions where guys put on the 16 inch "Harley" tire.
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Offline jwl41085

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Re: 18 inch cb750 rear wheel
« Reply #2 on: January 06, 2009, 06:53:22 PM »
ah right on. my other bike has that conversion then..  i just figured 16 was the norm
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Offline MCRider

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Re: 18 inch cb750 rear wheel
« Reply #3 on: January 06, 2009, 06:55:01 PM »
Quote from: ekpent on January 06, 2009, 06:46:45 PM
The 18 inch is standard and you see a lot of conversions where guys put on the 16 inch "Harley" tire.
Well both are standard, the 18s up to K7 or so, then the 17s. Must have bought an older parts bike.
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Offline ekpent

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Re: 18 inch cb750 rear wheel
« Reply #4 on: January 06, 2009, 06:57:34 PM »
I have never had any newer than 1976 so the 77-78 did have a 17 incher then ???
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Offline MCRider

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Re: 18 inch cb750 rear wheel
« Reply #5 on: January 06, 2009, 07:01:14 PM »
Quote from: ekpent on January 06, 2009, 06:57:34 PM
I have never had any newer than 1976 so the 77-78 did have a 17 incher then ???

I'm a little confused as to your holdings, but the pre 76 were 18s, 77-78 were 17s and the 16s are owner conversions available since the beginning.
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Offline ekpent

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Re: 18 inch cb750 rear wheel
« Reply #6 on: January 06, 2009, 07:08:36 PM »
Thanks for the info,did not know 77-78 had 17 inch tires. Have not owned one of those years yet,usually look for 76 or older.
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Offline Patrick

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Re: 18 inch cb750 rear wheel
« Reply #7 on: January 06, 2009, 07:09:43 PM »
My '78 F3 750 came with an 18-inch Comstar.

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eldar

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Re: 18 inch cb750 rear wheel
« Reply #8 on: January 06, 2009, 07:12:07 PM »
The 69-76 K had 18. The 77/78 k had 17. The 77/78 F had 18 inch comstars. I think the A was the same as the f. The only years I am unsure of are the 75/76 F.
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Offline MCRider

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Re: 18 inch cb750 rear wheel
« Reply #9 on: January 06, 2009, 07:13:02 PM »
Quote from: Patrick on January 06, 2009, 07:09:43 PM
My '78 F3 750 came with an 18-inch Comstar.



Uhhh, what Eldar said. 
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Offline scondon

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Re: 18 inch cb750 rear wheel
« Reply #10 on: January 06, 2009, 07:24:17 PM »
Quote from: Patrick on January 06, 2009, 07:09:43 PM
My '78 F3 750 came with an 18-inch Comstar.



   I think the comstars throw people off to the fact that the 77-78 F models are SOHC cb750's. 4-1 pipes and different tank/seat stylings make even the 75-76 F model a oft forgotten member of the family. Wave that SuperSport flag high and proud Patrick ;) ;D

Quote from: eldar, Master of the K8 Thunder! on January 06, 2009, 07:12:07 PM
The 69-76 K had 18. The 77/78 k had 17. The 77/78 F had 18 inch comstars. I think the A was the same as the f. The only years I am unsure of are the 75/76 F.

   75/76 F has 19F/18R spoke wheels like the K model, only disc brake on rear instead of drum. Pretty sure the A has a 17R Comstar(Ughh) :)
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eldar

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Re: 18 inch cb750 rear wheel
« Reply #11 on: January 07, 2009, 06:37:57 AM »
Do they? I thought the A was the same as the f? Maybe not, it was an odd duckling.
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Offline scondon

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Re: 18 inch cb750 rear wheel
« Reply #12 on: January 07, 2009, 09:18:10 AM »
Quote from: eldar, Master of the K8 Thunder! on January 07, 2009, 06:37:57 AM
Do they? I thought the A was the same as the f? Maybe not, it was an odd duckling.

   Drum brake in the rear, so more like the K. Apparently the Comstar was only on the '78 model. Looks like 17R on all three years of A model production though. I could be mistaken since I'm just spoutin' what I "think" I know about'em ;) :)

http://www.sohc4.net/index.php?title=CB750A#About_the_CB750A
« Last Edit: January 07, 2009, 09:28:32 AM by scondon »
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Offline mick750F

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Re: 18 inch cb750 rear wheel
« Reply #13 on: January 07, 2009, 04:12:46 PM »
Quote from: scondon on January 06, 2009, 07:24:17 PM
Wave that SuperSport flag high and proud Patrick ;) ;D

Yes!!! ;D ;D ;D Pity the commoners with their "K" bikes!  ;D ;D ;D

Mike
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