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Old 06-14-2012, 08:44 PM   #1
ChopperCharles OP
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Dual sport tire on a GL1100 rear wheel

I'm looking to put a Shinko 705 on a GL1100 rear rim. Stock tire size is 130/90/17. My options are 130/90/17, 130/80/17, and 140/80/17 in the Shinko. I believe it's a 2.5" rim for the GL1100. I want a nice beefly look on the back, handling isn't the *most* important, but it is important. I'm going to be running a 120/90/17 up front on a GSXR750 rim. The 130/80 and 140/80 say 2.75 is the minimum recommended rim width, but I don't think .25" is going to make a huge difference...

Thoughts?

Charles.
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Old 06-14-2012, 10:37 PM   #2
DaveStockwell
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You'll also want to check into the max weight the dual sport is designed to handle. A narrower rim will flex the sidewall more than intended and the heavier weight of the bike will both increase the running temp of the tire. I don't have the specific numbers but you might find yourself in a situation where you are running too hot and risking tire failure.
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Old 06-14-2012, 11:22 PM   #3
Jamie Z
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Quote:
Originally Posted by ChopperCharles View Post
Stock tire size is 130/90/17. My options are 130/90/17, 130/80/17, and 140/80/17 in the Shinko.

I want a nice beefly look on the back, handling isn't the *most* important, but it is important.
Maybe I'm confused. Why wouldn't you get the stock size?

Are you just wanting to look cool?

Jamie
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Old 06-15-2012, 12:51 AM   #4
Brendan J
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A 130/80-17 will work fine on the rim providing it is 2.5" wide. DR650's come standard with this rim width and the 130 is a very common fitment. but as mentioned before check the load rating of the tyre. Also check side clearances as knobbies are often wider than stated.
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Old 11-06-2012, 06:51 PM   #5
Aarono2
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Im curious about your bike....GL1100 with gsxr front wheel? Any pictures?
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Old 11-06-2012, 07:55 PM   #6
waterboybueche
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me too

I am curious too~~

Please post some pics!!
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Old 11-06-2012, 11:54 PM   #7
gkam
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It is a CX 650!
Dualsportadventsupermotar style!


Some transalps have a 130/80X17 tire on a 2,5" rim.
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Old 11-13-2012, 09:13 PM   #8
ChopperCharles OP
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Here's a couple pics of the bike, mostly finished. Been riding the hell out of this thing! Only little issues left now. (eg, need to clean up the wiring so the connectors are all inside the headlight shell or under the gas tank, the triple tree top needs to be polished or powdercoated, etc)







The tire ended up being a 130/80/17 on the rear, and a 120/70/17 on the front. I had a 130/80/17 on the front too, but it contacted the exhaust under hard braking and hitting a pothole, so I replaced it with the correct size for the rim. (Which also means my mechanical speedo reads correctly again)

Charles.
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Old 11-13-2012, 09:33 PM   #9
waterboybueche
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VERY COOL Chopper Charles

I like it alot!!!
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Old 11-13-2012, 09:52 PM   #10
ChopperCharles OP
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For the record, I disassembled a stock CX500 rear wheel (which had a 16" rim), and attached the 17" rim and spokes from a GL1000 to the CX500 hub.

Charles.
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Old 11-25-2012, 10:05 PM   #11
Robert^
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Charles,

Very, very nice. I have been researching the exact same type of transformation. What did you end up with for the front wheel / brake setup?

There is a Twtex.com forum thread http://www.twtex.com/forums/showthread.php?t=46633 where the builder made some spoke flanges for the rear hub to make the conversion. I believe there may have been some dishing involved to center the tire.

Another thread http://cx500forum.com/index.php?/top...x-650-project/ the builder got a custom rim from Kosman to finish the rear.

I have been amusing myself with the thought of designing a Hossack suspension for such a bike.

Quote:
Originally Posted by ChopperCharles View Post
For the record, I disassembled a stock CX500 rear wheel (which had a 16" rim), and attached the 17" rim and spokes from a GL1000 to the CX500 hub.
Charles.
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Old 11-25-2012, 10:08 PM   #12
Robert^
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Charles,

May I ask, what carbs do you have and what kind of power do you think you are getting out of the engine.

What forks?

I saw a brief list of mods such as bores, pistons, cams, and such and recall the Mikuni TM38's being recommended. What have you chosen to do or not do to the engine?

Your bike is very inspiring and super cool.

Thanks,
Robert
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Old 11-28-2012, 08:44 PM   #13
Jimo368
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Thats just fricken amazing, awsome job!
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Old 12-03-2012, 07:07 PM   #14
sraber
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Wow, Fantastic build!
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Old 01-08-2013, 01:59 PM   #15
ChopperCharles OP
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Engine is stock, carbs are a dual Mikuni kit that are being sold by Murray Feldman on the CX500 forum (http://cx500forum.com). They're custom-made specifically for the CX500 and CX650.

I've not done any work to the engine, other than slap on those carbs.

Still dialing in the bike, just got the suspension issues all worked out, and I've yet to put a whole lot of miles on it. Running pretty lean right now, so going to go up a main jet size and see how that works for me.

Charles.
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