UK Karting - Notice Board (2-Stroke Karting) : Try this site..... and a note to Huxley!

Notice Board (2-Stroke Karting)

Try this site..... and a note to Huxley!
Posted by 'itpro' on 01 Nov 2010 @ 13:37

| View Message Thread | Reply to this message |

itproJoined: August 2001
Total Posts: 6
[ View User Profile ]

http://www.bdkc.co.uk/Kart_setup.htm

They recommend 13/84

Here's a quick table for you

Drive Driven Ratio (to 1)
13 80 = 6.15
13 81 = 6.23
13 82 = 6.31
13 83 = 6.38
13 84 = 6.46
13 85 = 6.54
13 86 = 6.62
12 80 = 6.67
13 87 = 6.69
12 81 = 6.75
13 88 = 6.77
12 82 = 6.83
13 89 = 6.85
12 83 = 6.92
13 90 = 6.92
12 84 = 7.00
12 85 = 7.08
12 86 = 7.17
12 87 = 7.25
12 88 = 7.33
12 89 = 7.42
12 90 = 7.50

Print-out the table, it will be useful for you for the future.....

I have sorted them into the HIGHEST gearing to the Lowest gearing. That 'randomises' the sequence of drive and driven gears but gives you a pretty good 'smooth' chnage of ratios.

Huxley
********

I think your '3 teeth' estimate quite far adrift.

Look at the gears:- 12-83 and 13-90... they both give a rough ratio as 6.92:1. That would seem to show that it's nearer to SEVEN teeth than 3 teeth!

I think you are missing the fact that our 'pitch' (effectively, the size of the gap between two teeth) is MUCH smaller than on your bikes and that increases the number of teeth we use in a similar sized sprocket!

Ian

Message Thread:

Rotax minimax rev limit by 'HarryH1997' (31 Oct 2010 @ 0:20)

Re: Rotax minimax rev limit by 'itpro' (31 Oct 2010 @ 0:48)

Re: Rotax minimax rev limit by 'HarryH1997' (31 Oct 2010 @ 21:56)

Re: Rotax minimax rev limit by 'huxley' (31 Oct 2010 @ 22:55)

Try this site..... and a note to Huxley! by 'itpro' << You are here!

Re: Try this site..... and a note to Huxley! by 'huxley' (01 Nov 2010 @ 19:43)

Re: Try this site..... and a note to Huxley! by 'itpro' (01 Nov 2010 @ 19:52)

Re: Try this site..... and a note to Huxley! by 'huxley' (01 Nov 2010 @ 20:01)

Re: Try this site..... and a note to Huxley! by 'itpro' (02 Nov 2010 @ 1:35)

Re: Try this site..... and a note to Huxley! by 'HarryH1997' (01 Nov 2010 @ 23:02)

Hi Harry by 'itpro' (02 Nov 2010 @ 2:00)

Dick Emery, wasn't it Ian? (nt) by 'alanrr' (02 Nov 2010 @ 13:45)

Re: Dick Emery, wasn't it Ian? (nt) by 'itpro' (02 Nov 2010 @ 13:57)

Re: Dick Emery, wasn't it Ian? (nt) by 'alanrr' (02 Nov 2010 @ 17:51)

Re: Try this site..... and a note to Huxley! by 'huxley' (02 Nov 2010 @ 18:44)

Re: Try this site..... and a note to Huxley! by 'itpro' (02 Nov 2010 @ 19:04)

Re: Try this site..... and a note to Huxley! by 'HarryH1997' (02 Nov 2010 @ 19:26)

Re: Try this site..... and a note to Huxley! by 'huxley' (02 Nov 2010 @ 22:13)

Post a Reply:

You may post a direct reply to this message which will appear in this thread.
To post a new or unrelated message use This Form. Top of Page
Notice Board Index

[ UK Karting Main Index ]


News	Karts & Karting	Notice Board	Market Place	Companies Directory	Tracks Directory	Events Calendar	Race Results	Photo Gallery	Links