VTX Mag Wheel

[jmaddox]

Does anyone have any info on a mod to use the vtx mag wheel instead of the spoke one. I was just checking out the cbr mod and was wondering if anyone has attemped the vtx wheel.

Jim

[AirportFF]

Isn't it shaft drive? I know when they do the rim mod they relace the Spirit hub to the VTX rim

[Mr.Sinister]

Might be able to do it with the Aero .

[AirportFF]

Is the Aero chain driven? I'd like to get a pic of the cush drive assembly. That may work.

[Mr.Sinister]

The Aero is a shaft drive . Honda moved in that direction because the 750 vt is considered a beginer bike and beginers are not suposed to want to maintane a chain . They discontinued the Spirit and ACE so they would not be competing against themselfs in the middlewieght cruizers . Older people and women are the demografic that they are targeting most . That is why it is less sporty . Beach bars , big fenders , big seat , fairing , light wieght , low maint , low seat . The paint is even a 2 tone classic look . Not very mannish . The chopper look scares the first time rider they are marketing to .

[AirportFF]

I didn't need to pull the rear wheel off of Susan's bike over the winter. I'm wondering if a Magna rear wheel will fit it. The brake parts are the same p/n.

Not as nice as say Sabre wheels, but easier to clean than those damn spokes.

[jmaddox]

I totally forgot about the shaft drive oh well. I guess it's eith buy a 1000.00 rim our go with the spoke mod.

Thanks
Jim

[Mr.Sinister]

I love the look of spokes. Hate cleaning them . Mags are nice . Might work ?

[AirportFF]

I've seen used Magna wheels on ebay go for as little as $50

[jmaddox]

I've seen used Magna wheels on ebay go for as little as $50
I sthe magna wheel a 5.5 so I can do the metz 200 on the rear

[AirportFF]

The Marathon on my bike is the 170/80 which is actually 1/2" wider than the 180 for some reason

But that's the widest you can safely go with that wheel

[Mr.Sinister]

Is not the 170 on the Spirit that way to ? If I put a 180 on it will pinch and be 1/2" narrower ? That has something to do with the aspect ratio ? Rustyjake will probibly chime in on this . He is pretty sharp .

[jmaddox]

So what is the largest tire we can put on a stock spirit rear wheel? How much smaller is it then the 200? I am trying to stay away from doing the vtx mod because at some point I would like to get a custom set of wheels.


Jim

[RustyJake]

You are correct in your thinking Mr. Sinister. I'm not expert but have my theories on it.
Width of the rim would have an effect on the overall width of a tire. Th VTX rim is probably wider then the stock rim on a spirit.
There was a good post on the site before it crashed that listed widths for some tires. Which showed discrepencies on the claimed width from the manufacturer and the measured width of a tire. I would have to assume that not all tires are measured the same. The other possibility is there is more then likely an industry standard in where a measurement is made, and on some tires having a larger sidewall the sidewall may be larger in width then where the measurement is taken. Looking at some tires, this could be the case if the industry standard is at taken at the point where the tread ends. Some tires exceed that width with the sidewall actually increasing the width. Which we as bikers wanting a larger tire, we'd measure at the widest point which may explain the differences in widths.
If you pinch a tire onto a rim that it wasn't designed to fit, it's definitely not going to be as wide as it should. Put it on a rim that is wider then it's made and it will be wider then the measurement as well because the sidewall is allowed to run straighter and isn't pulled into the rim.
Clint, was your 180 an 80 aspect ratio too? Could you measure the width at the point the tread ends or see if my 'theory' on the difference in widths is close. I'm thinking this, as well as the tire not having to be pulled into the rim are more then likely why we see an increased width on some tires.

[RustyJake]

So what is the largest tire we can put on a stock spirit rear wheel? How much smaller is it then the 200? I am trying to stay away from doing the vtx mod because at some point I would like to get a custom set of wheels.
Jim
The key question is "safely"??? There are some over at TSW running a 200 series tire on the stock rim. I believe that a couple may have had to sign waivers to have the tire installed on that rim. That tire recommends a 5.5" rim
Spirit stock tire is 160/80-15
160mm wide= 6.3" width
80% aspect ratio (height) 5.03" (x2=10.08")
10.08" + 15" = aprox. 25.08" total tire height

200mm= 7.87"

I'd say if you are in need of a tire, get one that looks good to you. If you are planning on going with custom wheels in the future there isn't a lot of need in laying out money for a tire that will be changed out. Unless you are in need of a tire right now, why waste your money?

[AirportFF]

This was beaten to death on the Magna forums and confused more people than anything. :rolleyes5 From what I gathered, the 170/80-15 Marathon is wider on the rim but also taller than the Metz 180/70-15.

The general consensus was exactly what you thought. The wider tire gets pinched more onto the rim, while the narrower tire's sidewalls aren't pinched as severely. Giving the impression of a wider tire.

If you stand both side by side off of the rim the 180 is a touch wider. As it should be.

My tire, mounted, is 7"wide and 4" tall from the rim to the outside edge. The rim is 4" wide at the widest point. While Susan's stock rear tire is a 160/80-15 and is 6 1/2" wide 4" sidewall height and the rim is 4 1/2 at the widest point.

It was even discussed that if you take a 180/70-15 Metz and put it next to the same size Dunlop the size was completey different.

[cryin'wolf]

There is a standard for tire measurements that all manufactures are supposed to follow. The tire is first measured across the tread cap, usually a 5 - 7 ply section, at a tire pressure of 40 psi. Note that the cap is not the entire crown if a tire. If you measure the distance between the two furthest opposing point of the crown you are measuring more than the cap. the cap is measured in CM's, 160 is 160 cm's across the cap. Then the bead diameter in IN's 15 is 15", 16 is 16" and so on. Aspect ratio or side wall height is a % of cap width. A 160 50 series tire in theory would have a 80 CM side wall 2 - 5 ply section, but because every tire company has different ply design and bonding procedure, the chine line or ridge between the crown and sidewall make some tires ACTUALLY wider or taller than others of same size.

As far as the VTX mag wheels go, I'd go with the 1300 version as it is a 15" vs. the 16" on the 1800. There is a larger selection of 15" tires and they're usually less expensive than 16" ones. The drive section of the hub comes apart the same as the stock SS750 at the cush drive section, it appears that the SS750 cush drive hub that the sprocket it attached to will fit in the vtx wheel without any or minor modification, also considering the stock tire size 170/80/15 it seems there would be little or no chain mis-alignment. :happy:

[Mr.Sinister]

Your pretty smart too .

[cryin'wolf]

...And you ought to see the good looks.

...... Don't everyone runaway at once. :no: