basic settings and gearing for sprinting

[mnrvortxf20c]

anyone mind me e-mailing with regards to geo set up of the club/prosport cars for sprinting/hillclimbing? also the effects of rear sprockets on gearing? got my first test day booked and its the first time ill have ever driven on avon a15 radials! cheers

[LCM]

mnrvortxf20c said:

anyone mind me e-mailing with regards to geo set up of the club/prosport cars for sprinting/hillclimbing? also the effects of rear sprockets on gearing? got my first test day booked and its the first time ill have ever driven on avon a15 radials! cheers

I give up!

I've already sent you championship winning, record taking set up details for Clubsports/Prosports.

Working out the speed effects of changing front and rear sprockets is a GCSE maths level calculation.

I'm sure that you would get much more out of the sport if you bit of effort into working some of the basics for yourself. Unless of course you want me to drive your car for you as well!

[mnrvortxf20c]

the file you sent me wouldn't open as i told you in an email i sent,but thanks for the help. i was after a starting point to work from but ill figure it out for myself.ive only done track work which is a bit different to sprints.

[SportsLibre]

Simply choose the spreadsheet for your engine fill in the sprocket and rear wheel diameter and Robert's your father's brother

http://www.westgarage.co.uk/calculators/calculator...

As for setup, just get it evenly corner weighted, that was the single most effective setup to make the car go round corners without terminal understeer. For the rest, LCM settings probably the best but I had it much softer for my less agressive driving style.

As LCM says, the only way is to drive it and feel for yourself.

Edited by SportsLibre on Monday 10th February 22:48

[BertBert]

LCM said:

I've already sent you championship winning, record taking set up details for Clubsports/Prosports.

Can you send me the championship winning, record taking set up for the SR3 please?

LCM said:

Working out the speed effects of changing front and rear sprockets is a GCSE maths level calculation.

Now strangely enough, me and Mrs Bert spent a very pleasant 30 mins in bed last night...working out the gear ratios on her push bike

[LCM]

mnrvortxf20c said:

the file you sent me wouldn't open as i told you in an email i sent,but thanks for the help. i was after a starting point to work from but ill figure it out for myself.ive only done track work which is a bit different to sprints.

Didn't receive any email to this effect. So have resent info by foolproof means.

It's not sprints vs circuit which is the key factor but Dunlop vs Avon!

[mnrvortxf20c]

thanks LCM. i was refering to the rear sprocket sizes with circuit vs short sprint/hillclimb comment. im testing at kames next weekend so will try a few things out and report back. thanks again!

[LCM]

BertBert said:

LCM said:

I've already sent you championship winning, record taking set up details for Clubsports/Prosports.

Can you send me the championship winning, record taking set up for the SR3 please?

LCM said:

Working out the speed effects of changing front and rear sprockets is a GCSE maths level calculation.

Now strangely enough, me and Mrs Bert spent a very pleasant 30 mins in bed last night...working out the gear ratios on her push bike

No problem for you Bert. Just send the cheque to LCM Driver Aids at the usual address...................

30 mins? That's not what Simon T led me to believe............

Respect. Respect.

[SportsLibre]

mnrvortxf20c said:

thanks LCM. i was refering to the rear sprocket sizes with circuit vs short sprint/hillclimb comment. im testing at kames next weekend so will try a few things out and report back. thanks again!

For Kames you will want a large rear sprocket as it is short and twisty like a hillclimb.

[dunc_sx]

By the sound of it it must have been long gear ratios BertBert.

[scooby151]

Why A15? Are your hillclimbs very long? We normally use A92 here, unless you have loads of power and wheelspin and need A15. If it's any help, I use a 14 tooth front sprocket and 47-49 rear, depending on track. Mine is a 1300 ;-)

[mnrvortxf20c]

i have a92 for short hillclimbs, 2 sets a15 for sprinting. i think most use a15?

[scooby151]

Think you should also consider A94. You might not find them on Avon web page, but I can assure you that they exist :-) they come between the A15 and A92, so softer than a15 but harder than a92. They are used a lot in Italian hillclimbs, since they are quite long.