Kerr205
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| posted on 28/5/14 at 08:01 PM |
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Need some help quick!!!!!!!!!!!!!!!!
Evening everyone.
I have a zx9 formula 27 and need some help. My car was build by the previous owner to be mostly a track car so is geared to do 100mph max and with
track based suspension and brakes. This makes it massivley fast and handle amazingly well which is great fun but has got me thinking, are all BEC like
this? Are any geared to do much higher max mph and are therefore less frantic? Ive never been in any else bike engined so was wondering if anyone was
local or localish to me that could take me out to see what their car was like?
I'd love to be in another BEC.
Hope someone can help.
Kerr
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gaz_gaz
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| posted on 28/5/14 at 08:08 PM |
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might want to tell us where you are?
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mookaloid
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| posted on 28/5/14 at 08:09 PM |
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mmmmmmmmm looking for someone local to you eh?
It might help if you gave us a clue as to where in the world you are 
"That thing you're thinking - it wont be that."
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carpmart
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| posted on 28/5/14 at 08:12 PM |
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Why do you need some help quick? It's a passenger ride your after, slightly over egged the thread title?
You only live once - make the most of it!
Radical Clubsport, Kwaker motor
'94 MX5 MK1, 1.8
F10 M5 - 600bhp Daily Hack
Range Rover Sport - Wife's Car
Mercedes A class - Son's Car
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Kerr205
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| posted on 28/5/14 at 08:12 PM |
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Aaaaaahhhhhhhhhhhhhhhhh I see what I did there!!!!!!!!!!!!
I live in Perthshire, Scotland.
Best driving roads going.
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mark chandler
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| posted on 28/5/14 at 08:13 PM |
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100mph is no good for most tracks, even short circuits like Lydden and Brands Indy you will be bouncing off the rev limiter.
You need to gear for at least 125mph, if you have a sierra rear aim for a 3.38 live axle as high a ratio as you can find.
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Kerr205
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| posted on 28/5/14 at 08:23 PM |
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quote:
Originally posted by mark chandler
100mph is no good for most tracks, even short circuits like Lydden and Brands Indy you will be bouncing off the rev limiter.
You need to gear for at least 125mph, if you have a sierra rear aim for a 3.38 live axle as high a ratio as you can find.
It was built for Knockhill so 100 was an ok max. It was supposed to be just about hitting the limiter at the bridge after the straight the.d
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mark chandler
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| posted on 28/5/14 at 08:30 PM |
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Up the gearing, it will still be just as frantic, just faster
Ask yourself how long do you stay in 1st, just a few seconds pulling away.
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Kerr205
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| posted on 28/5/14 at 08:59 PM |
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quote:
Originally posted by mark chandler
Up the gearing, it will still be just as frantic, just faster
Ask yourself how long do you stay in 1st, just a few seconds pulling away.
I probably get to 20mph in 1st as a max.
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ian locostzx9rc2
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| posted on 28/5/14 at 09:24 PM |
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If the cars a live axle get a3.54 diff should get 120 to 125 mph approx dependant on your tyre profiles if it's a ind rear Sierra diff a 3.64
should be ok for about the same my striker with a 3.64 and 185 60 14 maxed out at 124 mph at 12000 rpm in sixth gear.
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Kerr205
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| posted on 28/5/14 at 09:26 PM |
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Thanks guys for all your replies. I think it would be worth while to look at chnging the diff ratios but would like to be taking out in another one to
see what its like/how different to mine.
Hipefully someone will come along who has one locally.
Thanks again.
Kerr
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snapper
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| posted on 29/5/14 at 05:36 AM |
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Jump under the car and let is know what axle?
Live or independent
If independent are the drive shafts push fit or bolt on.
If it is independent I would suspect you have a 3.9 diff and if that is the case you have several higher ratio options, 3.6, 3.38 & 3.14
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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ReMan
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| posted on 29/5/14 at 12:37 PM |
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quote:
Originally posted by Kerr205
quote:
Originally posted by mark chandler
Up the gearing, it will still be just as frantic, just faster
Ask yourself how long do you stay in 1st, just a few seconds pulling away.
I probably get to 20mph in 1st as a max.
20!
Check this out:
http://www.locostbuilders.co.uk/forum/23/viewthread.php?tid=121319
Even with the worst ration you should be getting around 40 in first
But as said , you would be wise to gear up to give your poor engine a rest! 
[Edited on 29/5/14 by ReMan]
www.plusnine.co.uk
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mcerd1
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| posted on 29/5/14 at 02:00 PM |
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quote:
Originally posted by ReMan
even with the worst ration you should be getting around 40 in first
But as said , you would be wise to gear up to give your poor engine a rest!
]
but that will depend on his tyre size too
[Edited on 29/5/2014 by mcerd1]
-
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ReMan
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| posted on 29/5/14 at 04:37 PM |
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quote:
Originally posted by mcerd1
quote:
Originally posted by ReMan
even with the worst ration you should be getting around 40 in first
But as said , you would be wise to gear up to give your poor engine a rest!
]
but that will depend on his tyre size too
[Edited on 29/5/2014 by mcerd1]
OK find a tyre size that will give 20 in first and 100 in 6th 
www.plusnine.co.uk
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