Schumacher cougar LD3
#617
#618
Tech Initiate
Joined: Mar 2021
Posts: 38
#620
Interesting to see that it's a fairly standard looking LD3 - no special standup trans, extra rear weights, or crazy amounts of rear arm sweep. Heck, even the battery is pretty far forward. I'd say that's proof enough that these new cars can work great even outdoors. Even if people want to argue Hills was "high grip", I don't think you can argue it's as high grip as any of the indoor clay tracks these cars were really designed for. Even Nate Sutherland in an interview said Hills was a hard track to make the jump from stock to mod because you've got to be way more careful with the throttle than running at a place like Hoosier - jump to 4:00:25 for that moment.
#621
Tech Adept
Joined: Sep 2019
Posts: 103
From: 🇬🇧
Interesting to see that it's a fairly standard looking LD3 - no special standup trans, extra rear weights, or crazy amounts of rear arm sweep. Heck, even the battery is pretty far forward. I'd say that's proof enough that these new cars can work great even outdoors. Even if people want to argue Hills was "high grip", I don't think you can argue it's as high grip as any of the indoor clay tracks these cars were really designed for. Even Nate Sutherland in an interview said Hills was a hard track to make the jump from stock to mod because you've got to be way more careful with the throttle than running at a place like Hoosier - jump to 4:00:25 for that moment.
https://www.youtube.com/live/-VNinpd...yVt9TT&t=14418
https://www.youtube.com/live/-VNinpd...yVt9TT&t=14418
What an interesting curio these cars are... I still don't understand how they have all ended up there and that this was considered the optimal solution. Interesting to hear the Tebo interview where he was saying most of them look terrible to drive and unstable. I mean Davey Battas didn't, but I suspect this is talent related. Tebo was pondering how well his stand-up RB6 would have done...or cars from 2015 ish. Like, what was the design aim? I get they tried it with the B7 as 5 gear was the only option and that's a way of getting more weight to the rear. But Schumacher have the layback and chose to this route? Is it that the SWB and instability lead to quicker lap times...if you can hang onto it?.. Will we see cars get shorter now? I'd love to know what they tried and how they ended up where they did. For me, I thought 4 gear laydown would be worth a go. The XB2 with this was always a weapon on wet astro with this.
#622
Looking at the angle of the driveshafts, must shorten the wheelbase quite a bit.
What an interesting curio these cars are... I still don't understand how they have all ended up there and that this was considered the optimal solution. Interesting to hear the Tebo interview where he was saying most of them look terrible to drive and unstable. I mean Davey Battas didn't, but I suspect this is talent related. Tebo was pondering how well his stand-up RB6 would have done...or cars from 2015 ish. Like, what was the design aim? I get they tried it with the B7 as 5 gear was the only option and that's a way of getting more weight to the rear. But Schumacher have the layback and chose to this route? Is it that the SWB and instability lead to quicker lap times...if you can hang onto it?.. Will we see cars get shorter now? I'd love to know what they tried and how they ended up where they did. For me, I thought 4 gear laydown would be worth a go. The XB2 with this was always a weapon on wet astro with this.
What an interesting curio these cars are... I still don't understand how they have all ended up there and that this was considered the optimal solution. Interesting to hear the Tebo interview where he was saying most of them look terrible to drive and unstable. I mean Davey Battas didn't, but I suspect this is talent related. Tebo was pondering how well his stand-up RB6 would have done...or cars from 2015 ish. Like, what was the design aim? I get they tried it with the B7 as 5 gear was the only option and that's a way of getting more weight to the rear. But Schumacher have the layback and chose to this route? Is it that the SWB and instability lead to quicker lap times...if you can hang onto it?.. Will we see cars get shorter now? I'd love to know what they tried and how they ended up where they did. For me, I thought 4 gear laydown would be worth a go. The XB2 with this was always a weapon on wet astro with this.
Having said that the LD3 wet car is running the layback and still wants to let go a bit getting on power.
Last edited by Pistol123; 10-27-2025 at 02:47 AM.
#624
Interesting to see that it's a fairly standard looking LD3 - no special standup trans, extra rear weights, or crazy amounts of rear arm sweep. Heck, even the battery is pretty far forward. I'd say that's proof enough that these new cars can work great even outdoors. Even if people want to argue Hills was "high grip", I don't think you can argue it's as high grip as any of the indoor clay tracks these cars were really designed for. Even Nate Sutherland in an interview said Hills was a hard track to make the jump from stock to mod because you've got to be way more careful with the throttle than running at a place like Hoosier - jump to 4:00:25 for that moment.
https://events.redrc.net/2025/10/cha...in-schumacher/

#625
when you run the wide hub, you run narrower hexes, such as -2, to keep same overall width
take a look on petit for Ben Smith setup at Herts last year as an example. You do need the dirt inserts to achieve the “later” letter settings and depending on what you run, different length driveshafts may be required to retain correct engagement in the drive cup. I think it might be the dirt car UJs in this case.
take a look on petit for Ben Smith setup at Herts last year as an example. You do need the dirt inserts to achieve the “later” letter settings and depending on what you run, different length driveshafts may be required to retain correct engagement in the drive cup. I think it might be the dirt car UJs in this case.
Initially I was running H (wide) and that was nice, I changed at a practice session to B Narrow and that was horrible, really locked in the rear and then was unpredictable when it let go.
Last time out I tried F (wide and low) as that was what a mate was running. Much nicer, rear end while freer was much more predictable, only comment would be it had a little too much on power steering and not quite enough turn in.
I think I will either go back to H or try F wide and high (as per Ben's Herts setup you suggested). I think for our track that may lock the rear in a little too much, I know at the National with the number of cars and layout change the sand came up a lot at the National so I can see F wide and High being good for that.
I think with the flat Mezzo tyre it's all about keeping the car flat if you need the rear grip or using the lower RC heights to allow the car to roll off the tyre tread a bit to free the rear end. Slowly getting my head around...I think.
Thanks for the help.
Pete
Last edited by Pistol123; 10-10-2025 at 06:34 AM.
#627
Pretty standard, except for a new rear block to incorporate the pills system from the PB and the flat mount servo.
https://events.redrc.net/2025/10/cha...in-schumacher/

https://events.redrc.net/2025/10/cha...in-schumacher/

#628
From experience of running a b6.1 on wet astro, I always found compared to the laydown transmission with the stand up you are just weighting and age for it to rotate. Using the laydown and rear arms more forward gave you the rotation and rear grip once it was straightened up.
Having said that the LD3 wet car is running the layback and still wants to let go a bit getting on power.
Having said that the LD3 wet car is running the layback and still wants to let go a bit getting on power.
#630
Eight meetings in with the LD3 in mod and I have only broken a front wishbone and yoke. For carpet I think you will want the alloy front (and maybe rear) camber plates and the steering bar. Alloy front yokes and hubs would also be a good investment for carpet.



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