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  1. S

    Jim's RCR Lola build.

    yes, that power should be "adequate", ahem.
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    Setup for top speed run?

    ^ you might look at the Carroll Smith books - Prepare to Win, Tune to Win. Haven't read them myself, but I think they are considered good resources for race prep. Top speed prep might be different, though I don't know why - a safe race car will likely make a safe straight liner, provided you...
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    Setup for top speed run?

    That is not a Ford GT40 - it's a Ford GT. Not trying to be pedantic, I'm saying it because the GT, while looking retro, is in fact a modern car with full manufacturer backed aero development. An accurate repro Ford GT40 is an ancient car by aero standards. There's lots of development that has...
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    Early planning options on transaxle

    One guy you can talk to about transaxles is Brian Copans at BMC&Gee in Ohio. He builds Porsche Cup car transX (G96-96) and knows what he is doing. Assuming he has a suitable case/core in house, he can build it with parts to handle whatever you want to throw at it.
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    Zoomie Headers???

    Here's one more - https://primotipo.files.wordpress.com/2015/03/cooper-mosport.jpg
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    Zoomie Headers???

    This is the only can-am car I can recall having zoomies - don't think they were very common. https://www.conceptcarz.com/z21308/chaparral-2.aspx
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    transaxle torque reaction

    HI Terry, Thanks for your thoughts. To recap, when you stand on the gas, the junction between the transaxle and the engine block is subject to a large bending moment ie like breaking the engine/gearbox over your knee, right at the junction. If your motor is delivering all 400+ foot pounds and...
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    transaxle torque reaction

    Thanks to Jac Mac, I've discovered a problem with my current oil pan set up regarding the adapter plate - there's no structure below the bottom edge of the block to support the torque reaction of gearbox upon hard acceleration. There used to be a stock LS7 pan, which had a bulk head that...
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    The F#@&ing things on FIRE!!!!!!!!!!!!!!!

    http://kiddetechnologies.com/products/detail/optical-flame-detection Neil, is this similar to what you are using? If so, where are you mounting it?
  10. S

    Albins AGB10-SS6

    I have no experience with Albins, but they certainly have a good reputation. Bigger question - is it sequential shift/dog box? If so, best reserved for track use only.
  11. S

    Red car in Iowa

    ^ if they are phased, it's nearly irrelevant what the angles are, as long as the universals don't bind.
  12. S

    Red car in Iowa

    How much this will matter is up to the driver, and the deflection angles in the universals - see the link below. But if you have two 30 degree joints out of phase, you are looking at approximately 40% difference in shaft speeds peak at 90 degrees, well within the steering angle range you would...
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    Red car in Iowa

    mathematically - a universal joint is unlike a CV joint. As you bend the joint, while the input shaft moves at a constant velocity, the intermediate or output shaft rotates a sinusoidal velocity, which is to say, + or -, depending on what phase of rotation the joint is in. So if you keep the...
  14. S

    Red car in Iowa

    ^ good catch - doesn't matter for mock-up, but it is out of phase and it will matter when it is ready to drive.
  15. S

    weird starter problem

    thanks for the ideas guys. I'm surprised that my starter might be in this condition as it has not been used much, but it is a big motor. This is great info.
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    weird starter problem

    gents, I was maneuvering my car in tight quarters yesterday, and managed to stall it. When I went to restart, I got no rotation, no nothing except a faint click. Battery is charged. After sleeping on it, I decided the pinion must be blocked from engaging the ring gear. I moved the car about 4...
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    Front spring rating help needed.

    ^ first inch of spring compression requires 220 lbs of force. Second inch requires another 220 lbs, so 440 lbs total. 660 lbs force will compress the spring 3". But that is not the wheel rate - the effective wheel rate will change as the angles in suspension change. I'm sure there is some...
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    Front spring rating help needed.

    Unfortunately, the KVA may need different springs from the GTD due to motion ratio differences between them. There's nothing wrong with preloading the springs to get the ride height you want, provided it gives you the ride you want, from a comfort and handling perspective. Does the car bottom...
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    Early planning options on transaxle

    The trade off here is simply bragging rights vs drivability. 600 rwhp will mean a BIG cam. One will which will make the engine a bit of a handful below 2000 rpm. And you are unlikely to get that power down on street tires.
  20. S

    Homemade CFRP mid engine sports car

    amazing level of fabrication here, very cool. One comment on open front design - I think it will generate significant lift at speed, all that air will pack into the wheel wells as there is a choke point between the tires and the chassis that will not allow easy escape. A rigid flap in front of...
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