This tyre should be fixed in a car. What type of a bolt should be chosen from the design library?
Length = 37.38mm
Diameter = 29.52mm
Usually (in fact 98%) you would NOT bolt the wheel to the car. The wheel would fit onto or against a hub or drum that has high tensile threaded studs protruding out of it. These are in the same circular pattern as the holes in your wheel rim obviously. You then slide your wheel onto these threaded studs and then put wheel nuts on from the outside.
Also, you may want to note that the holes in the wheel rim usually have an external chamfer on them and the wheel nuts have a external taper (chamfer) around one end. This is so that when you thread the nut along the threaded stud it locates each hole of the wheel rim concentrically and therefore aids in ensuring that the wheel spins true.
This picture shows you the brake rotor (hub) with the threads sticking out and two nuts have been loosely screwed on. Notice how the nuts are tapered on the inside end!
Hope this helps!
Hoping that you are using all standard sizes while designing, I will recommend you to use M30 size bolt for this. Use metric size and I will preferred DIN standard for this. As worldwide everybody is using DIN majority.
You would NOT use anywhere near a M30 thread for wheels on a domestic car.
It wouldn't come off Dave
M12 would be a reasonable average wheel stud / bolt.
I don't know how much detail you want to apply or how many components you want to build, or indeed how accurate you want to be, but if you are going to try and be as realistic as possible there are some pointers I can give you just from the asthetics of your wheel and rim. Are you going to create the braking system as well? If so, then the face that your wheel stud holes are on (in the rim) should be closer to the outside face of the rim so that all of the braking components fit within the inner cylindrical area that is left on the inner-side of the rim.
Also, for a standard domestic vehicle, cosmetically your tyre is too big for your rim (or your rim is too small for your tyre). You are also missing the central hub hole in the rim. Just trying to help you get the best result, not being critical.........
This is a typical disc brake setup once a wheel is removed (note the studs protruding). This all fits within the inside (rear) of the rim.
Another typical basic domestic vehicle disc brake system.
Now, this shows you a cross-cut of a wheel rim. Notice how the face of the rim is basically on the outside edge. This is so that all of your braking components fit within that big empty space on the inside of the rim. Also note the central hub hole!
This is a home assignment to model a car, no dimension is given at all. My ultimate intention is satisfying the instructor, not designing for real world. To design it for the real world you have to consider many factors.
Anyhow your explanation is giving real world knowledge as well. Thank you for that.
You're quite a guy Dave Bear - going out to take the wheels off just so you have pictures to upload -
You'd know if I had taken mine off mate, everything is currently covered in "red dust" John!
lol - red dust and ..... bird droppings - happy camping
This is an original design of a truck wheel given in the YouTube. I choose it because rim and tyre is designed together. I modified it to suit my requirements as a result there are many problems with this tyre.
There are many major differences between a truck wheel and a car wheel. Could you not find a car wheel on YouTube? Or better still a model on GrabCad or 3DCentral?
There are many YouTube videos about designing a rim & tyre but separately. This is a only one I found designing it together. I do not about the meaning of GrabCad or 3DCentral.
They are websites which contain hundreds of thousands of CAD models.
3DCentral...... 3D ContentCentral
3D Content Central
Retrieving data ...