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Author Topic: WM6 3.5 x 18 rear wheel  (Read 2761 times)

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Offline brandEn

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WM6 3.5 x 18 rear wheel
« on: March 04, 2013, 07:11:39 PM »
Another wheel/tire thread yay! :P


Anybody running a WM6 3.5 x 18 rear wheel on their CB750? I have done a bunch of searching around on the forum and have found people mention they were planning on running a rim this wide but haven't actually found anyone that is.


I just bought a new WM3 2.15 x 18 non dimpled rim I was thinking of using up front with a WM6 in the rear.
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Offline Retro Rocket

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Re: WM6 3.5 x 18 rear wheel
« Reply #1 on: March 04, 2013, 10:17:21 PM »
check your pm's mate.... ;)
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Offline JamesH

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Re: WM6 3.5 x 18 rear wheel
« Reply #2 on: March 04, 2013, 11:58:16 PM »
Pretty sure mikeb4 used on in his cr750 road bike build.
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Offline brandEn

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Re: WM6 3.5 x 18 rear wheel
« Reply #3 on: March 05, 2013, 08:18:30 AM »
Quote from: Retro Rocket on March 04, 2013, 10:17:21 PM
check your pm's mate.... ;)

Checked!
Thanks
 :)
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Offline brandEn

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Re: WM6 3.5 x 18 rear wheel
« Reply #4 on: March 05, 2013, 08:18:40 AM »
Quote from: JamesH_Sussex on March 04, 2013, 11:58:16 PM
Pretty sure mikeb4 used on in his cr750 road bike build.
Pics?
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Offline MCRider

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Re: WM6 3.5 x 18 rear wheel
« Reply #5 on: March 05, 2013, 09:06:39 AM »
Quote from: brandEn on March 04, 2013, 07:11:39 PM
Another wheel/tire thread yay! :P


Anybody running a WM6 3.5 x 18 rear wheel on their CB750? I have done a bunch of searching around on the forum and have found people mention they were planning on running a rim this wide but haven't actually found anyone that is.


I just bought a new WM3 2.15 x 18 non dimpled rim I was thinking of using up front with a WM6 in the rear.
I put a 3.50 x 17 on mine with a 140/70 tire. Not many miles on it, but it looks cool. Really dropped the ride height which wasn't an intended consequence, but I'll live with it. Anyway, Oh yeah I've got a rolling chassis with a really wide 18 on the rear. A 75F it is, so its a disc brake.

On the K, you'll run afoul of the brake stay up front. Can be moved to the outside of the bracket for clearance.
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Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline brandEn

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Re: WM6 3.5 x 18 rear wheel
« Reply #6 on: March 05, 2013, 09:36:50 AM »
Thanks Ron,
Are you talking about the brake stay on the front of the swingarm? I am running a box swing arm, wonder if that will give me more room...
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Offline MCRider

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Re: WM6 3.5 x 18 rear wheel
« Reply #7 on: March 05, 2013, 09:57:31 AM »
Quote from: brandEn on March 05, 2013, 09:36:50 AM
Thanks Ron,
Are you talking about the brake stay on the front of the swingarm? I am running a box swing arm, wonder if that will give me more room...
Yes. The brake panel stay rod travels to the front of the lower side of swingarm at a slight angle towards the centerline of bike. The rim will clear it, but the tire may not, depending. I had mine repositioned (moved and rewelded) but a less elegant fix is to bolt the stay to the outside of the bracket.

Diff swingarm, I don't know.

The tire, spread that wide, may (will) also hit the stock chain cover.
« Last Edit: March 05, 2013, 09:59:03 AM by MCRider »
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Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline brandEn

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Re: WM6 3.5 x 18 rear wheel
« Reply #8 on: March 05, 2013, 10:10:42 AM »
whats this chain cover you speak of?...
haha.

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Offline MCRider

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Re: WM6 3.5 x 18 rear wheel
« Reply #9 on: March 05, 2013, 10:45:05 AM »
Quote from: brandEn on March 05, 2013, 10:10:42 AM
whats this chain cover you speak of?...
haha.
tee hee
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Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline Retro Rocket

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Re: WM6 3.5 x 18 rear wheel
« Reply #10 on: March 05, 2013, 02:15:04 PM »
In the old days  8)  i just used to put a bend in the rear brake arm, that fixed the tire clearance problems... ;)
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If You can't fix it with a hammer, You've got an electrical problem.

Offline dbritt

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Re: WM6 3.5 x 18 rear wheel
« Reply #11 on: March 05, 2013, 08:00:05 PM »
Running a 3.5 x 18 on my 76k . I like the look. I am running a pretty tall tire. 130/90. Also I  changed the swingarm to a 78 which is a little wider and longer.
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Offline brandEn

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Re: WM6 3.5 x 18 rear wheel
« Reply #12 on: March 05, 2013, 08:02:54 PM »
Thanks dbritt, can you post a pic?
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Offline dbritt

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Re: WM6 3.5 x 18 rear wheel
« Reply #13 on: March 05, 2013, 08:03:16 PM »
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1976 CB750K
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1999 X-1 Lightning
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2007 127" Rigid Frame

Offline brandEn

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Re: WM6 3.5 x 18 rear wheel
« Reply #14 on: March 05, 2013, 08:06:42 PM »
Quote from: dbritt on March 05, 2013, 08:03:16 PM
Bike is here.
http://forums.sohc4.net/index.php?topic=115956.0

Nice!
Can you post your tire sizes? That front looks really cool.
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Offline dbritt

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Re: WM6 3.5 x 18 rear wheel
« Reply #15 on: March 05, 2013, 08:24:37 PM »
Front is a 110/90 18, rear is a 130/90 18. If I had it to do over again I might have tried a 140/80 on the rear but it might not have cleared the brake arm. I would have liked a little less profile on the rear.
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1976 CB750K
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1999 X-1 Lightning
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2007 127" Rigid Frame

Offline Retro Rocket

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Re: WM6 3.5 x 18 rear wheel
« Reply #16 on: March 05, 2013, 08:26:57 PM »
dbritt, what size is the front rim..?
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If You can't fix it with a hammer, You've got an electrical problem.

Offline dbritt

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Re: WM6 3.5 x 18 rear wheel
« Reply #17 on: March 05, 2013, 08:35:42 PM »
Quote from: Retro Rocket on March 05, 2013, 08:26:57 PM
dbritt, what size is the front rim..?
2.50 x 18
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1976 CB750K
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Offline Retro Rocket

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Re: WM6 3.5 x 18 rear wheel
« Reply #18 on: March 05, 2013, 08:45:59 PM »
Quote from: dbritt on March 05, 2013, 08:35:42 PM
Quote from: Retro Rocket on March 05, 2013, 08:26:57 PM
dbritt, what size is the front rim..?
2.50 x 18

Thanks... ;)  I  didn't think you had a 110 on a 2.15 rim... ;)
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750 K2 1000cc
750 F1 970cc
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If You can't fix it with a hammer, You've got an electrical problem.

JWExperience

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Re: WM6 3.5 x 18 rear wheel
« Reply #19 on: March 11, 2013, 03:05:39 PM »
Obviously this setup would affect trail so would it be enough to go with a rear tire with a smaller diameter by running a 140/70/18 to offset this difference? Also I was thinking that given the shape of the swingarm and brake arm that this may open up the ability to run a 150 tire. Anyone do anything like this with success?
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