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Rally Track, New Plymouth

Ideas for track

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#1 charlesx

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Posted 15 February 2012 - 10:42 AM

Hi all.

Perhaps not the right place but any suggestions for minimum radii for rally track turns. Have done a bit of a design for flat but twisty track on 1.2 x 2.4m board. You have to start somewhere. Smallest radii is 70mm and maximum 350mm.

How does this sound or is it too tight.

Regards

Chas Le Breton

#2 gazza

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Posted 15 February 2012 - 02:14 PM

70mm is too tight, you want at least 100mm .... the tightest corner on my track is a 1ltr can of paint diameter ..... hi tech stuff
Quickly read this post before it is deleted or i turn grey again

Gary

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#3 charlesx

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Posted 15 February 2012 - 05:29 PM

Thanks for replies. Glad I asked.

See first draft below - clearly I need to change a few corners but this will not be hard and will probably improve alignment.

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Any other comments also welcome.

Main plan was just to build a reasonably demanding flat test track but see no reason why it should not be more.

See what you think.

Regards

Chas Le Breton

#4 rsclio

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Posted 16 February 2012 - 03:40 PM

Charles,
if your board is totally flat you can overlap a bit
Ie don't need full lane width make it like a carpark autcross
Ithink there is some on home racing world site to look at
Cheers
Mike

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#5 slots

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Posted 17 February 2012 - 06:36 AM

Charles, don't do a flat rally track. You'll regret it after the first drive. Go straight into elevations, particularly half way down that big straight
Stu

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#6 Ben_M

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Posted 18 February 2012 - 03:46 PM

This was my first track on the same size board.

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While it was a lot of fun I felt that maybe there were too many corners in it. If I was to do it again I would straighten out two lengths. I like the top 2/3rds of your design but my feeling is that the bottom third is a little too busy. Dont get caught up trying to fit as much track as possible into the space. What size board are you using? If its thick enough you can flip it over and do it again on the other side if you dont like it the first time. Im still waiting to do that to mine. Was thinking about putting a two lane oval to race my son on. Got a couple of years before that will happen though.

Edited by Ben_M, 18 February 2012 - 03:47 PM.

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#7 charlesx

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Posted 18 February 2012 - 04:44 PM

Ta for comments rsclio and slots. I really wanted to go for flat as I was thinking of getting routing done professionally. Have not built track since I started and never finished one using hacksaw when I was a kid. My son who did drafting for Green Acres has already said Autocad bit will be easy compared to last one.

On "too busy" comment wanted something testing but perhaps I went overboard. Have already eased corners out to minimum 100mm and simplfied slightly. Perhaps I need to simplify a bit more when I redraw.

Will post second version soon. One option might be to cut main straight separately and slightly longer than required for flat and routing out piece at what would normally be each end of lead-in so straight section can just be slotted in when I want to use. Some elevation or humps could then be built into this section.

See what I come up with.

Regards

Chas Le Breton

#8 charlesx

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Posted 18 February 2012 - 04:45 PM

Whoops - proposed track is 1.2 x 2.4m.

C Le B





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