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Recent content by TestDriver

  1. TestDriver

    Grip - what influences grip

    And, adding to Pat's comment; Keeping the tires (assuming same size tires) as evenly loaded as possible. Cheers. Ramon
  2. TestDriver

    Piston Rod Material for Extreme Abuse

    Hello, I'll second Greg's comment on OEM durability concerns and I agree with Fabrico's suggestion of using hard plastic covers. In my opinion, if you used something similar to modern dirt bike fork shields, it would be an attractive and elegant solution. Ramon Mendoza
  3. TestDriver

    patented suspension

    One of the advantages I see is that you have camber gain in roll, as with sla setup, but unlike sla there is no camber gain in squat or heave. Of course, this advantage would be better suited to a high powered application such as a racecar. Ramon
  4. TestDriver

    patented suspension

    One of the advantages I see is that you have camber gain in roll, as with sla setup, but unlike sla there is no camber gain in squat or heave. Of course, this advantage would be better suited to a high powered application such as a racecar.
  5. TestDriver

    Tire Design: Hydroplane Resistance

    Jason, In this day and age, there is no cost vs. quality issues. If an OEM's specs cannot be reached on budget, the business is given up. There is too much to loose by sacrificing quality. There is also no real danger in using the general market tires available. As tireman9 said, the major...
  6. TestDriver

    Tire Design: Hydroplane Resistance

    ccw, Tire tread design is usually an optimization arrived at by compromising several different performance aspects of a tire. There cannot be a single best design for hydroplaning unless other factors are completely ignored. And unless it's a competition tire, this rarely happens. In...
  7. TestDriver

    Tire Design: Hydroplane Resistance

    Hello all, First of all, I test tires both objectively (I do most of the objective hydroplaning stuff at our facility) and subjectively for a living and have some insight to add. Most of this is from first hand knowledge. Some is from consulting with tire building (as opposed to tire testing)...
  8. TestDriver

    caliper clocking?

    There is also the very real effect of steering feel to be considered. Forward mounted calipers tend to add to the steering force felt by the driver while rear mounted ones tend to lower the steering torque feel. This is simply due to the moment imparted by the caliper's mass center (and all the...
  9. TestDriver

    Help locating odd wheels!

    Guys, Thanks for the continued posts. Like I said, I can always use more of these types of contacts. Ramon
  10. TestDriver

    motorcycle tyres

    Phil, I'm afraid you'll be in for a long search if you want specifics on tire content. Information such as compounds, curing procedures and most construction specs (other than what is offered on retail literature) is impossible to get for the end user. The same goes for what is commonly...
  11. TestDriver

    motorcycle tyres

    Hello all, I’m a little late to this thread but since I just found it, I’ll add my two cents. Regarding passenger vehicle tire testing, there is significantly more testing going on than what has been posted above. Besides the basic government standard tests (BTW, these are about to become much...
  12. TestDriver

    Help locating odd wheels!

    Matthew, Thanks for the lead. I never know when something like this might come in handy later. For anyone else interested in the wheels I ended up getting, here is further information. Colorado Custom wheels had a very rapid turn around time and were inexpensive. However, the wheels are...
  13. TestDriver

    Help locating odd wheels!

    Thanks Jen, I did have contact with Alcoa regarding this. They are capable of handling the project but the cost would have been several orders of magnitude more than what we had budgeted and what we'll end up spending elsewhere for this type of wheel. Regards Ramon
  14. TestDriver

    Important suspension parameters

    Roll axis gradient and any gradient change relative to roll. Related to caster and caster trail would be pin lead/trail. What about desired Ackerman percentage/change, steering ratios and so on. Ramon Mendoza
  15. TestDriver

    Help locating odd wheels!

    Thanks for the contacts Pat. I had not tried Oz in Au. I had only called their distributor here in the states. Maybe next time I'll try the source first. For anyone interested, I found two places in the US that would work with me on custom widths, diameters, offsets, etc.; Colorado Custom...
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