LiteSpeed: My speed record attempt car...

[Dagger Thrasher]

Cool! Thanks for the tip, I'll probably try that out. :)

[ziggy12345]

Daggerthrasher. I have a power calc spreadsheet from B4maz that you can use to calculate power required. I'll send you a copy if you PM me your email.

I was using some figures for your car and to get to 150mph in 10 seconds covering 1100ft with a 0.7g acceleration rate you will need around 1600 watts. This is a lot lower than you have calulated. Let me know how you calculated the power requirements and I'll check the spreadsheet

Cheers

[Dagger Thrasher]

Hey Ziggy! Don't worry, I already have that spreadsheet...but stupidly, I only have Works Spreadsheet and it won't open it right. It opens, but without the graphs etc (ironically I can view the whole thing fine on my phone, but not edit it). So I've not been able to really scientifically come up with a requirement. Just out of interest, what car specifications did you put into the spreadsheet?

I've just based my power requirements off of wht other people have run. I've heard people say you need all sorts of different levels of power to reach a certain speed, so I've just gone with a setup that will definitely have enough power; if it's a bit hot to handle, I can dial some of it out via the ESC and my radio. It's all dependent on current, anyway...with "only" 6S LiPo, it should have the uncontrollable bursts of power tha a truly HV system might, but as the power requirement goes up,the cells can just push out more and more current.

That's my theory anyway lol! Thanks for taking the time to use the spreadsheet file though...some more info on what you put in would be really useful. :)

[ziggy12345]

Here is a heads up for you. A rear wheel drive 2wd speed car wont work even with a gyro.

Take all the electrics out and put it into an Xray and you will get 145mph. If not then you will b lucky to hit 50 with that car.

Cheers

[vassmar]

Originally Posted by ziggy12345

Here is a heads up for you. A rear wheel drive 2wd speed car wont work even with a gyro.

Take all the electrics out and put it into an Xray and you will get 145mph. If not then you will b lucky to hit 50 with that car.

Cheers

Word on that. But it would be awesome if you can get this to work but i'm with ziggy

[Dagger Thrasher]

Guys, I know a RWD car is trickier than a 4WD car for obvious reasons. But by no means is it impossible...Nic Case has proven this himself with the RWD oval car he used for the unofficial 160mph speed run. With the right setup, this is do-able. :)

[ziggy12345]

I spoke with Nic about the 160mph run and it was slower than the previous run. The radar gun messed up

Cheers

[Dagger Thrasher]

I figured as much, but although it was a slower run, it still must've been over 100 for people to think it was 160. The thing is, I've still not spent all that much cash on this car yet, so I might end up changing chassis but I don't know. The thought of having a more inherently stable 4WD machine is tempting. But RWD is most certainly possible IMO.

[What's_nitro?]

I think as long as the body provides enough front downforce to keep the front wheels in contact with the ground you'll be fine. 4wd can still spin-out if you have too much power, which you will, of course. The only other issue would be steering and that's where the downforce would come into play. Besides, the power going to only 2 wheels will be more efficient and thus give more speed. Ever wonder why AWD cars get bad mileage?

[ziggy12345]

Any update on the project?

[ziggy12345]

Thats a no then

[Metallover]

Any updates lately? Subscribed!

[ziggy12345]

This project is dead

[What's_nitro?]

Great designs take time. I wouldn't count it out just yet.

[Dagger Thrasher]

Hey guys,

Thanks for the interest! But yep, I've decided, reluctantly, to scrap the project. I really did want to complete it and compete with it, but for reasons which I can't really go into here, I decided it'd be best to quit it.

Again, thanks for all the interest and compliments, they really mean a lot. Perhaps I'll have another crack at a speed record car in the future.