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  1. Warpspeed

    Twincharging - calling Warpspeed!

    The GTR drive train is not without it's quirks. The front diff is located in the GTR sump, and is pretty much impossible to adapt to something else (I have attempted this myself) and the available diff gear ratios are limited. The front prop shaft is also on the same side as you, and the...
  2. Warpspeed

    Stacking Diodes for HV Switching

    A real oldie but still useful. www.r-type.org/pdfs/1b3gt.pdf
  3. Warpspeed

    Twincharging - calling Warpspeed!

    It's a funny thing Pat, but talented, determined, and hard working people tend to be more lucky than most.
  4. Warpspeed

    Twincharging - calling Warpspeed!

    A great achievement Donald. With a lot of this stuff, raw engineering can only take you so far, the final bit is about tuning, tweaking, and optimization.
  5. Warpspeed

    Longitudinal motorcycle engine - torque effects

    Thanks Greg. There are probably several potential causes of torque steer, and as you say, more torque and tractive effort multiplies whatever is going on.
  6. Warpspeed

    Longitudinal motorcycle engine - torque effects

    Tex, the lower lateral link is not as heavily loaded during braking and acceleration as it is in cornering. It is the radius link that suffers most of the pushing and pulling, during braking and acceleration. I know it is not really all that clear cut and simple, but you can probably see what I...
  7. Warpspeed

    Longitudinal motorcycle engine - torque effects

    As you know the 323/Laser uses a typical strut type front suspension. While high lateral cornering forces will certainly create some definite compliance steer, pure tractive effort should not. The front wheels may move forwards slightly due to rubber compliance, but there is nothing there to...
  8. Warpspeed

    Measuring rotating Force

    If small torque change does not show up on a current meter, it will not show up on a watt meter either. The internal inertia of the fast spinning drive motor, and friction in the transmission, will mask small cyclic torque fluctuation in the output shaft. The motor current will be very...
  9. Warpspeed

    Turbo Shaft Play Tolerance?

    Yes, but the original poster referred specifically to "modern" turbos, which to me implies ball bearings. Those don't have a single dedicated thrust bearing, but use the angular contact ball races at each end of the housing to locate the shaft. Shaft expansion will tend to close up any end...
  10. Warpspeed

    Measuring rotating Force

    You can buy rotary torque transducers. The basic idea is usually some type of torsion bar with rotary encoders at each end. As more torque is applied, one end lags the other, and you get a variable duty cycle digital output proportional to torque.
  11. Warpspeed

    Turbo Shaft Play Tolerance?

    Axial tolerance can never be zero, because there absolutely must be allowance for thermal expansion. As Dick says, the type and size of turbo will change things greatly. Anecdotal evidence is all you are likely to get on an internet Forum. Best to contact the manufacturer of the specific...
  12. Warpspeed

    Stationary Vented Nicad batteries

    These are all excellent batteries. I hope your pockets are deep.
  13. Warpspeed

    high speed gearbox?

    A belt is probably the best way to go. Check out these Vortron high pressure air blowers. These run at those sort of speeds and power levels. You might even be able to buy some Vortron spare parts to do your job.... http://www.vortron.com/blowers.htm
  14. Warpspeed

    Longitudinal motorcycle engine - torque effects

    It is not normally very easy to do a back to back test on the same car with similar versus different front driveshaft lengths ! But I have had the opportunity to do exactly that. In Australia the Mazda 323/ Ford Laser comes normally aspirated with unequal driveshafts, turbo with a different...
  15. Warpspeed

    Variable frequency AC supply

    Not that I am aware of. The problem is this type of testing is fairly obscure, and so the test equipment needs to be custom made to suit the specific application. A lot of this type of analysis is done these days by computer simulation, often using "Spice". But that can only take you so far...
  16. Warpspeed

    Variable frequency AC supply

    OperaHouse is on the right track. This type of testing can generate some very low and reactive load impedances which can easily let the smoke out of many typical audio amplifiers. Either a single monster amplifier, or several amplifiers, but make sure there is some additional series resistance...
  17. Warpspeed

    Longitudinal motorcycle engine - torque effects

    Pat, I much prefer rear wheel drive, but these days most smaller cars do not offer much choice. FWD works pretty well, until you start to push the limits.
  18. Warpspeed

    Longitudinal motorcycle engine - torque effects

    Te effects of torque steer I was seeing on my own car were most likely due to positive caster and large scrub radius. As we all know, positive caster adds stability in a straight line, and even more so during heavy braking. But positive caster also has the exact opposite effect when tractive...
  19. Warpspeed

    Longitudinal motorcycle engine - torque effects

    I had a small Japanese FWD hatch with a twincharged engine. Under acceleration it would rock from side to side, and weave under acceleration, classic torque steer. Converting the same car to four wheel drive with a 60R/40F torque split fixed the problem. Bikes are fun, but rain, not being able...
  20. Warpspeed

    UPS Battery Type for Elevated Room Temperatures

    Thirty dc Kw for ten minutes is still quite a lot of power. Battery Ah capacity is always rated at the standard ten hour discharge rate, as the discharge rate increases, the achievable Ah capacity falls off quite dramatically. The problem being, that not all batteries are suitable for such a...

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