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Rear wide tire conversion

PostAuthor: Vugar » Sat Sep 12, 2020 10:37 am

Hello guys, I've looked around on the forums and couldn't find the answer to my question and was just confused with the tire sizes!

I would love to fit a wide tire on my xv1100 (86) and by that I mean those beefy 200mm fat tires you see on custom choppers. This is for simply looks as I prefer much wider tired so slim ones.

So my question is how would I go about doing this as I can simply expand the swing arm by having it cut in the middle and welded to widen it, because the rear wheel is cam driven and the wider tire would not align with the stock cam shaft right?
It also ofcourse has drum brakes but I'd be happy to convert to disk brake system with the new bigger rim

Also, how about the front, can I change that to a bigger profile without having to do much changing etc.

Thanks!

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Re: Rear wide tire conversion

PostAuthor: Jake » Sat Sep 12, 2020 12:10 pm

:pop:
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Re: Rear wide tire conversion

PostAuthor: Flyingdog » Sat Sep 12, 2020 2:16 pm

Jake:
Is this seat take'n?

:pop:
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Re: Rear wide tire conversion

PostAuthor: Naspc » Sat Sep 12, 2020 8:24 pm

Hey Flyingdog, can you move your head a little? :pop2: lol
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Re: Rear wide tire conversion

PostAuthor: Flyingdog » Sun Sep 13, 2020 2:12 am

Sorry..can't scrunch down any further.



Booster.PNG


Got an extra helmet if ya need it incase the height make ya atad queezy and somewhat unstable. :cl:

Sorry Vugar: Sometimes these things just happen, till everyone gets with the program. :bg:
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Re: Rear wide tire conversion

PostAuthor: Vugar » Sun Sep 13, 2020 3:58 am

Did I ask something controversial or has it just been answered a million times already? :ops: I'm confused lol :help: sorry if it's the second one!

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Re: Rear wide tire conversion

PostAuthor: Flyingdog » Sun Sep 13, 2020 5:16 am

Vugar wrote:Did I ask something controversial


Well...So you would like to go from:
Wide Tire swingarm2.PNG


To:
Wide Tire swingarm1.PNG


By way of "something" like this (or a reasonable homemade facsimile):
Wide Tire swingarm.PNG

Wide Tire swingarm3.PNG




JMO: I see the concept and most anything can be massaged/shaped to work, but shaftdrive vs chaindrive (or lack of {counter sprocket?} in this case) ..and I don't even see the shocks being re-attached :bg:
Umm..don't forget to post pictures. Think it would be easier to pony up $50k and buy a fat tire custom.
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Re: Rear wide tire conversion

PostAuthor: Vugar » Sun Sep 13, 2020 5:59 am

Thanks flyingdog and I see what you mean. So I can technically do thay by what essentially would be building a new bike lol
In that case would a 150/90 or another size be the biggest possible/safest tire I could fit on the xv1100 rear?

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Re: Rear wide tire conversion

PostAuthor: Jake » Sun Sep 13, 2020 6:04 am

_______________________________________________________________________
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It’s what you know for sure that just ain’t so.”

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Re: Rear wide tire conversion

PostAuthor: Jake » Sun Sep 13, 2020 6:05 am

Vugar wrote: would a 150/90 or another size be the biggest possible/safest tire I could fit on the xv1100 rear?


150/90 is it.
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Re: Rear wide tire conversion

PostAuthor: Vugar » Sun Sep 13, 2020 7:41 am

Alright so definetly looks like I'm keeping all that stock and whacking on the biggest tire that it'll fit

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Re: Rear wide tire conversion

PostAuthor: Jake » Sun Sep 13, 2020 8:39 am

Don’t know if you could see the images that I posted earlier.

I posted from my PC, then when I looked just now on my iPad, they weren’t visible, so I removed the image tags, now just a link to the pics. They should be visible to everyone.
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It’s what you know for sure that just ain’t so.”

~Mark Twain


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Re: Rear wide tire conversion

PostAuthor: Vugar » Sun Sep 13, 2020 8:57 am

Jake wrote:Don’t know if you could see the images that I posted earlier.

I posted from my PC, then when I looked just now on my iPad, they weren’t visible, so I removed the image tags, now just a link to the pics. They should be visible to everyone.


Funnily enough as I was replying and quoting your message to say I can't see fhem the links to pictures came up and I just opened those but yes couldn't see before haha

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Re: Rear wide tire conversion

PostAuthor: Flyingdog » Sun Sep 13, 2020 8:58 am

Jake wrote:They should be visible to everyone.


Came across ok here.

Vugar wrote:Alright so definetly looks like I'm keeping all that stock and whacking on the biggest tire that it'll fit


As Jake said...Been running a 150/90 for 35yrs..never a problem. But, don't give up the dream. I've always wanted to build a Virago hillclimber/3' extended rear-end and nitrous. But alas..it would probly just go "Poof"... But, don't give up the dream. :id: :bg: :cl:
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Re: Rear wide tire conversion

PostAuthor: beltdrive » Thu Sep 17, 2020 3:41 pm

If the wide tire is your dream, you could buy a TR1 xv 1000 engine - yes with a chain drive - and fit a swingarm from a wide tire bike, yes you can make it a 1100

I do not have - right now - the inside chain to center swingarm measurement, this measurement x2 will tell you how wide a tire this built will allow.

You can also make a long swingarm bolt, so you can have a short chain to a idler sprocket on this bolt and a long chain from the other idler sprocket beside the first sprocket, to the rear sprocket, in this set up you can go as wide as you like.

You can even go belt drive if you like, if you do not understand I will make you a drawing, but you have to go with a chain drive engine 

I run a 180 on my Beltdrive Special
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Re: Rear wide tire conversion

PostAuthor: Hellgate » Thu Sep 17, 2020 8:27 pm

^^^ That's the best idea I've heard so far.
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Re: Rear wide tire conversion

PostAuthor: beltdrive » Mon Sep 21, 2020 3:20 am

The inside chain to center frame/swingarm measurement is 94 mm, so you can max run a 180 tire behind the TR1 engine.

You can take apart the engine and machine a longer output shaft and that will move the sprocket out where you need it, now to say this is complicated is an understatement, but anything is possible.

You can like I said :" make a longer swingarm bolt, so you can have a short chain to a idler sprocket on this bolt and a long chain from the other idler sprocket beside the first sprocket, to the rear sprocket, in this set up you can go as wide as you like.

Now make sure you understand that the swingarm bolt has to be machined for it, so it is wider where the bearing are, so you can tighten it without binding the bearings and the stubaksel " pipe"

Now Gen 2 virago frame has a different svingarm bearing set up, than Gen 1, and I do not have one here, so I cannot comment to much on it, other than I am afraid that the stub aksel will be in the middle of the swingarm bearing, if that is the case you will have modify the frame, if that is the case, my advice would be "you can only do this built on a Gen 1 frame",

You have to make at least half a new svingarm, as the "drive side" has to very be different to  accommodate the new driveline setup, if you are not a good welder, get one to do the welding for you, as the steel moves, you have to set it up croket in order for it to be straight when it cools down. 

As all the things you do, make sure it is safe or get pro help to make it RIGHT,  being on the motorway smiling and have a nice ride with the love of you life on the backseat, all loaded up wth holliday luggage in the midle of 6 lanes of cars and trucks, you do not want a swingarm failure - just trust me on this - 
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Re: Rear wide tire conversion

PostAuthor: faffi » Mon Sep 21, 2020 4:18 am

If you absolutely want to retain shaft final drive, you could fit an engine and swingarm from an XVS1100 or BT1100. That would involve either modifying to use a mono-shock, or convert the XVS swingarm to twin shocks. The latter will also require new (wider) upper shock mounts on the frame.
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