Fulham Park Raceway - 31/7/2010
Hi, I have just set up the 3 FPR track Camero's for Group W racing. I decided to record what I did . This will be uploaded to the web site for reference for any one to use who wants to set up Camero or other
Group W cars.
The first thing is to measure the 1/3 distance between the front & rear axles. I usually mark the chassis for future reference.
On the Camero the 1/3 distance falls exactly on the front edge of the magnet retainer. So unfortunately the centre of the magnet would be too far to the rear if fitted into the original front magnet position.
About 1/2 of the magnet retainer top is removed.This helps to locate the magnet in the correct 1/3 position measured to the centre of the magnet.
The end result is the magnet sits half way into the original front magnet position.
Also removing the front half of the retainer lip allows the magnet to move higher when packed with the 4 pieces of card ( about 1mm).
If a Professor Motor Magnet 28 x 8 x 1mm is purchased it can be fitted flat on the chassis with out the packing as was done with the original Scalextric bar magnet.
This is because the Professor motor magnet has less magnetic force than the 2mm thick Scalextric Magnet.
Professor Motor Magnets are available from Thunderbird Slot Racing. Professor Motor Part # PMTR1030
It can easily be adjusted by suitable button magnets to achieve a total downforce less than the 220g required by FPR rules.
Scalextric also supply a 1mm magnet but may be hard to get supply.
The button Magnets are available in various sizes from "Guass Boys" Web Site in the USA.
The 6mm x 1mm from Guass Boys Magnets seems a handy size for adjusting down force in all classes..
There has been no rear weight added to the Camero's but if need small amounts can be added to trim the handling.
The body screws are left a little loose so the body can be wobbled a little bit.
A white round sticker is placed over the screw holes to catch them if the unscrew with vibration. A small amount of Blue Tak can also be used..
I have replaced the Guide shoe on my Scalextric Camero. You can fit a Ninco or Fly brand of guide.
This eliminates the self centring mechanism on the original guide set up.
It also means you can direct contact the motor supply wires to the contact braise with small thimbles - no iffy spring arms to make contact.
Like all cars set up for Group W round the inner & outer edges of the tires with sandpaper then finish the tread of the tire with #600 grit sandpaper.
Make sure the magnets are fitted the correct polarity to be attracted to the magnet on the corner marshal pick up sticks.
A NSR 20,000 RPM Shark motor can be fitted under FPR rules . Try it with the standard motor first as the change may not be needed.
One issue with some Camero's if you fit Pauls Urethane tyres is to make sure you hab=ve clearance to the axle bearing retainer post on the side without the spur gears. Just sand the inside edge of the tire to achieve clearance.
Most of the above can be applied to other Classic Touring Cars to set them up for FPR Class W.
You will find you are racing with characteristics very similar to handling on a wood painted surface even though we have the standard Carrera Plastic surface and some magnet downforce.
The Urethane tires even Grain up like rubber tires do on the wood surfaces. For best results the Variable sensitivity and brake controllers are desirable. This is described in a section below.
Also please check the Road Circuit Rules page for all the rules for this class.
Please contact me if further help is needed with FPR Group W Set - ups. Cheers, John
GT/Sports Cars Class - Realistic Handling Set - up
The cars in this class vary largely in design, weight an power. So some custom settings may have to be done for each brand and model of car.
However most of the car set up is similar to that described in the Camero set up above.
The magnet still has to be in the front 1/3 of the distance between the front and rear axles. This measured from the front axle to the centre line of the magnet. This applies to all cars in this class.
There is a difference in the total down force allowed decided by the total car weight excluding the downforce. Cars weighing under 80 grams must have a maximum total down force of less than 200 grams.
Cars weighting over 80 grams must have a maximum total downforce of less than 220 grams.
For most cars work best with the magnet centre line very close to the 1/3 distance. The magnet allowed is again to be a bar magnet less than 30mm x 8mm . Some cars use the 2mm Scalextric bar magnet packed up to reduce downforce if necessary . I many cases the best option is to again use the Proffessor Motor 28 x 8 x1mm #PMTR1030 magnet. This is glued with Gell Grip flat to the car chassis in the 1/3rd position. Usually a 6 x 1mm or similar magnet was used on top to adjust the downforce as required.
We use Eurathane & rubber tires with the edges of the tire tread rounded off.
Most cars benefit from using variable controllers and variable track power supply for each lane as described below.
Most cars did not need any extra weight added to the Chassis.
Also please check the Road Circuit Rule page for all the rules for this class.