A class bike build advice

[sockjohn]

Seems like most people who are starting with a modern sportbike and even a lot who aren't are running stock style wheels (17" mags)
My initial thoughts are to run a narrow front wire wheel and as big and narrow of a solid rear rim as I can find tires for.   From the reading I've done it seems like maybe the ease of finding speed rated tires is choosing a lot of peoples wheels and tires for them.  Is this correct? With an inline 4 tearing a wide hole in the air is my front tire even really going to make much of a difference?

I have looked for real data on the drag differences between a spoked wheel and a solid wheel, and haven't really found sufficient data yet.  There is lots of data on bicycle wheels, but nearly all of the solid wheels are designed for low aero drag, as opposed to designed for looks like many motorcycle wheels.

I suspect that wider and solid is far better than narrow and spoked, and actually have wondered if in APS that a wider front tire would be advantageous overall.  I would stick to the sport bike wheels.

[grumm441]

Lars, those leathers certainly fit you a lot better then they did me.....especially now, I just got to loose weight...oh, sure

A pity Lars didn't have them handy when I saw him
G

[Briz]

Scott; the headstock bearings on modern sportsbikes - the plastic caged ballraces - always share sizes with off-the-shelf taper rollers.
Just measure the head spindle & order taper rollers to fit. Then turn the headstock to suit the taper rollers.

[Stainless1]

None at 208....
John N, any problems at 250?
Joe, issues at 270?

Timkins are good if you have them tight and don't let em rust.

[kiwi]

Also consider that the wider the front tyre and forks are, the wider you can make your front fender. That may be beneficial for an unfaired bike.

[sockjohn]

Also consider that the wider the front tyre and forks are, the wider you can make your front fender. That may be beneficial for an unfaired bike.

This is along the lines of what I was thinking, but figured in APS where the speeds were higher the difference might be more significant.  I wonder what the legality of running a rear tire on the front would be, and how a bike would handle with a 300mm front tire?

(apologies for dragging the wide tire argument to bikes now!)

[kiwi]

Here is a pic of my A class bike. It might give you some ideas.
It is my first attempt at a bike for Bonneville and it seemed to go ok.
Went reasonably fast without that much power.

[saltwheels262]

Here is a pic of my A class bike.

nice looking bike.

franey

[wobblywalrus]

Do you plan to put partial streamlining on in the future?  If so, the greater strength in the triple clamp area provided by upside down forks can be a real bonus.