Hi Gordon,
I have a GT car set up for this (would need to check downforce on Magnet Marshal though) and would be willing to try it at our next event. The problem I have though, is that I don't have any rubber tyres to fit it. I would consider going with Luke's suggestion as far as using silicones for both classes. Your other suggestions for these two special classes seem fine to me.
Steve
LMP-E/GT-E endurance event proposal
Re: LMP-E/GT-E endurance event proposal
Luke, I think that with your suggestion, properly set-up GT-E cars will be as fast as LMP-E cars. I'm not too keen on the rubber tyres as it is not always easy to tell the difference between them and silicones. We need to have a definite difference in downforce and in straight line speed (RPM). Besides contributing to the desired 1 sec lap time difference, this reflects what actually happens in 1/1 racing - the LMP cars have more downforce and speed than the GT cars.
Re: LMP-E/GT-E endurance event proposal
Perhaps we can have an additional requirement of a minimum total car weight for both classes. This can be the same for both classes. It will prevent someone building a super-light car with the required minimum downforce that runs faster than everyone else.
Re: LMP-E/GT-E endurance event proposal
OK, here are my latest regulation suggestions:
- Body: LMP and GT models based on real cars that raced from 1982 onwards (for LMP, Group C onwards). Windows may be tinted so as not to reveal the cockpit.
- Chassis: Free.
- Minimum Ground Clearance: 1.0 mm / 0.040 in.
- Interior: Free but must comply with General item 3.
- Digital Chip: Free.
- Motor - GT-E: Up to 21,500 RPM.
- Motor - LMP-E: Up to 25,000 RPM.
- Gearing: Free.
- Motor Pod (where applicable): Free.
- Magnets - GT-E: Maximum Magnet Marshal downforce of 200 gms.
- Magnets - LMP-E: Maximum Magnet Marshal downforce of 275 gms.
- Wheels: Free.
- Axles: Free.
- Tyres: Free.
- Guide Flag: Free.
- Car Minimum Weight: 90 gm.
Re: LMP-E/GT-E endurance event proposal
Good Morning Gordon,
It's looking all good to a point ... and did you realize next month is a full year now we're trying at this special event ..?
Not sure if it's a good or bad thing but nonetheless ~ its still interesting trying to get it off and running
I looked over your latest suggestion thoroughly and (still) think - cars must not be able to magnetically adhere to a standard track piece upside down.
Here's why ... and see how fast these cars (both classes) might be going with suggested maximum mag. (200 & 275 gms) downforce.
My fully tested Scalextric Chev C6R GT-E car:
So instead of a flat all-out racing event, how about a steering one
Hope I made my thinking as brief as possible & I strongly believe this method (in green) will be much easier to handle all round the day of the event.
Luke
It's looking all good to a point ... and did you realize next month is a full year now we're trying at this special event ..?
Not sure if it's a good or bad thing but nonetheless ~ its still interesting trying to get it off and running
I looked over your latest suggestion thoroughly and (still) think - cars must not be able to magnetically adhere to a standard track piece upside down.
Here's why ... and see how fast these cars (both classes) might be going with suggested maximum mag. (200 & 275 gms) downforce.
My fully tested Scalextric Chev C6R GT-E car:
- • The Chev C6R car with a 18K rpm motor and bar mag 1.5mm/120 gm downforce ...... Rubber tyres - BLT 7.9 sec.
- • The Chev C6R car with a 21.5K rpm motor and bar mag 2mm/200 gm downforce ...... Silicone tyres - BLT 4.9 sec.
So instead of a flat all-out racing event, how about a steering one
Hope I made my thinking as brief as possible & I strongly believe this method (in green) will be much easier to handle all round the day of the event.
Luke
Re: LMP-E/GT-E endurance event proposal
Luke, I agree with you that the cars should be slower rather than faster, but if we use the upside down rule, the only differential in the classes will be the the motors and I believe that is not enough. What if we lower the downforce limits for both classes but still giving the LMP-E cars a higher limit than the GT-E cars? We can run some tests to determine the best downforce to help achieve slower lap times and the 1 sec minimum difference between the two classes.
I really feel that we should set up some cars and do some actual tests to get concrete feedback.
BTW, the 90 gm minimum weight for all cars will have a significant impact on performance. Heavier cars will have less acceleration and braking and will de-slot easier at a given downforce limit.
I really feel that we should set up some cars and do some actual tests to get concrete feedback.
BTW, the 90 gm minimum weight for all cars will have a significant impact on performance. Heavier cars will have less acceleration and braking and will de-slot easier at a given downforce limit.
Re: LMP-E/GT-E endurance event proposal
I'm going to set up an LMP-E car meeting all the listed requirements but with 200gm downforce. I'll also set up a GT-E car with 150gm downforce and we'll see how the two compare.
Re: LMP-E/GT-E endurance event proposal
Hi all,
I like Gordon's latest suggestion allowing the GT-E cars to run silicone tyres. For this class, I'd really prefer the Magnet Marshal checking of magnetic downforce rather than using the Upside Down rule.My car is now fully compliant with these proposed regulations (subject to Magnet Marshal verification). I estimate GT-E times (for my car at least) in the range of 6.4 to 6.6 seconds. This is a far cry from Luke's estimate of his Corvette's 4.9 seconds though.
Steve
I like Gordon's latest suggestion allowing the GT-E cars to run silicone tyres. For this class, I'd really prefer the Magnet Marshal checking of magnetic downforce rather than using the Upside Down rule.My car is now fully compliant with these proposed regulations (subject to Magnet Marshal verification). I estimate GT-E times (for my car at least) in the range of 6.4 to 6.6 seconds. This is a far cry from Luke's estimate of his Corvette's 4.9 seconds though.
Steve
Re: LMP-E/GT-E endurance event proposal
GG,
I presume these 2 car meetings are a tuning/race-testing timetable and all happening on a certain day or separate days
Steve,
You have me wondering what kind of GT-E car you are working on and with your estimated lap times of 6.4 to 6.6 seconds ... is that with a 18K rpm motor
Luke
I presume these 2 car meetings are a tuning/race-testing timetable and all happening on a certain day or separate days
Steve,
You have me wondering what kind of GT-E car you are working on and with your estimated lap times of 6.4 to 6.6 seconds ... is that with a 18K rpm motor
Luke
Re: LMP-E/GT-E endurance event proposal
GN Gordon and Steve,
You'll know, with all this planning and (the much needed) ideas to test these 2 type cars to help fine-tune the regs to make it all user friendly ...
We must remember this is the easy part with these 6 main slotcar factors.
The tough part is (even though I feel it will be very favourable) afterwards - getting 12 persons/racers to make up/choose the 6 Teams (X 2 drivers) to compete in this special endurance (maybe the 200th. milestone) event.
Luke
You'll know, with all this planning and (the much needed) ideas to test these 2 type cars to help fine-tune the regs to make it all user friendly ...
We must remember this is the easy part with these 6 main slotcar factors.
- • GT-E Car - 21.5K rpm motors - 150gm downforce - Weight 90gm - 1mm Ground Clearance - 6.5 sec. suggested lap times.
• LMP-E Car - 25K rpm motors - 200gm downforce - Weight 90gm - 1mm Ground Clearance - 5.5 sec. suggested lap times.
The tough part is (even though I feel it will be very favourable) afterwards - getting 12 persons/racers to make up/choose the 6 Teams (X 2 drivers) to compete in this special endurance (maybe the 200th. milestone) event.
Luke