Transition from a 35' track to a 42' track.

[DEW36]

Can some one lead me in the right direction. I thought I remembered seeing a post about transitioning from a 35' track to a 42' track to see how much speed you would need to gain. I tried searching for it again and I can't find it. I know there are so many variables and really no exact answers, but I am curious. Building cars to race against my children and staying within the rules is fun,but really curious to see once all the upgrades are done where the car would be time wise with just starting. If my fastest car ran a 2.49(forgive me I can't remember the rest of it) on a 35' track just using what came in the kit in about where would it be using higher quality wheels and axles from DD4H? Believe me I am just fine with last place racing with all of you. It will be a great experience when I get my car done and sent in.
Thanks.

Sorry if I overlooked the post.

 

[Kinser Racing]

IMHO it's really hard to say, you just have to do it to find out. There are just to many variables involved. Your prep could be different, your tuning, set up, track conditions, ect.

 

[txchemist]

Can not be done without a LOT of info. I can say your 35ft track is set up way fast. If you go get a bearing car and set it up correctly and run it and get the times, then one can model your track, and then you can model the car, and then you can transfer the car to the 42 ft track BUT that all has to be redone every time either track gets moved or set up. If the track at Johns just changed 0.013 all I can say is it just made your car 0.013 slower.

So you need to just send in a car and take notes.

Now all those step improvements have very accurate times from testing on John track that will hold up.
As a guess, you will pick up 0.06 sec with the Cheetahs, another few hundredths with 92 axles, If you did not use the silver bullet, add in another 0.03 sec of speed possible.

 

[DEW36]

Thanks for the info. I knew it would be difficult to tell, but my curiosity got the best of me. I thought our track was a 32' but when I asked them they said it was a 35'. Hopefully in the next couple of weeks I should have enough money saved to order my stuff and see what happens. Thanks again.