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RCM - New build 'GS3' - pics

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Sat Dec 07, 2019 8:37 am PostPost subject: RCM - New build 'GS3' - pics
AK
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Seeing the Roger Clark Motorsport build pics on facebook..... they are pretty tasty. The GS3 (gob stopper 3) seems to be another level entirely. Amazing build so far :O


They are releasing a picture a day on the run up to Christmas. First 6 days so far...


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So December has arrived and the countdown to the big day has now started! No not Christmas, Gobstopper III reveal day! Each day leading up to Christmas we will be showing you some of the amazing components that have gone into this epic build. Christmas decorations RCM style! Lets get started...

#RCM #GobstopperIII #PrecisionTurbo #antilag #inconel





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Day 2 of our RCM advent calendar series and one of our most valued technical partners Alcon Specialist Brakes & Clutches steps up with this engineering masterpiece! Boasting a torque capacity rating of 826 lb.ft/1120Nm this 140mm quad plate carbon/carbon system is more than capable of handling whatever we can throw its way!

Weighing a featherweight 2.42kg it’s engineered to absolute perfection and combined with a custom made 185mm 0.7kg titanium flywheel will mean the engine has far less mass to spin than anything we have ever used before!

#RCM #GobstopperIII #AlconClutch #CarbonClutch #Teamwork





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Hot on the heels of yesterday’s RCM advent series pic of the amazing #Alcon Carbon clutch comes the answer to the many questions we were asked regarding how will the starter and gearbox be configured on Gobstopper III???

The car will run a totally bespoke 6 speed sequential transmission incorporating an active centre diff with billet casing and bell housing. This also mounts the 1.4Kw starter motor for seamless interaction with the titanium flywheel assembly. Using a fully custom built system allows us to position the engine and transmission exactly where we need it to be for optimum weight distribution 💪

#RCM #GobstopperIII #Billet #CNC






Quote:
Day 4 of our RCM Gobstopper III Advent Calendar Series is a vivid demonstration of how one of the primary targets of this particular project was to substantially reduce weight when compared to our previous Gobstopper race cars.

The complex latticework of 142 CNC laser cut T45 steel tubes in 1 to 1.5mm thick gauge are painstakingly TIG welded together to create an overall chassis weight of just 130kg whilst still offering unrivalled structural rigidity and safety for the driver.

Once the chassis design had been finalised the computer model was run through a crash test simulation by leading automotive and engineering consultants MIRA in order for it to be granted FIA certification. Exceeding the test criteria by a huge margin is testament to the many hours of skilled craftsmanship which has gone into this vital part of the project.

With the biggest single saving in weight of over 220kg compared to the chassis used in Gobstopper II we now have the perfect foundation to build on!





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Day 5 and with the main fabrication work completed the chassis was put into a basic primer ready for the dry build to begin. At this point in the build all suspension and drivetrain componentry was installed to ensure each aspect of the cars layout was suitably packaged and all systems positioned for optimum performance and balance. This is the stage in the cars development where the bulk of the real hard work is carried out and is vital in ensuring the final assembly goes smoothly.🔧🔩⚙️📐📏





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Day 6 and not exactly in sequence but we thought you guys deserved a bit of a treat going into the weekend!!

#Gobstopped #GobstopperIII #RCM #EJ20 #BRZ #Subaru





Porn....


If you dont know anything about RCM and their 'Gob Stoppers', google GS1, GS2.
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Sat Dec 07, 2019 6:44 pm PostPost subject:
Jackstrath
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Its porn indeed, but its not a Subaru is it lol

Im on the fence if im honest, whats it built for? Its a kit car.
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Sun Dec 08, 2019 2:03 am PostPost subject:
AK
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aye, not really a 'car' or production based car... but it'l be a bit like a BRZ ... maybe Laughing

Still - the level of work going into the design/fabrication is whats opening my eyes.

Its no 'kit car'... they look to be simply designing a full build from the ground up.

USE - To break lap records I expect. Not sure what it'll be eligible for, but most likely TA type stuff. World Time Attack - no idea how it'll fit in with regs. Goodwood again?
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Impreza Race Car, 1200kg, 480bhp - SLS/SMRC
Mini Race Car x3 - SMRC, SMRC, SLS
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Sun Dec 08, 2019 2:04 am PostPost subject:
AK
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Day 7 and we thought it was time to reveal Gobstopper III’s power unit! Built to a similar spec to the EJ20 based engine used to devastating effect in Gobstopper II, our 2.0L 900bhp motor saw RCM winning the Goodwood Festival of Speed Hill Climb in both 2015 and 2016! Setting a time just 0.3 seconds off Sebastien Loeb's 2014 winning time driving the Pike's Peak Peugeot 208 T16 at our first attempt was followed by overall victory again in 2016 this time fending off the McLaren P1 GTR LM hypercar of ex IndyCar racer Kenny Brack.

https://www.youtube.com/watch?v=ViDP0ZH3mm0

With a twin timing belt system, new custom twin plenum billet intake manifold, 200amp McLaren/TAG alternator and boosted by a Gen2 Precision 6466 turbocharger it’s a proven and reliable package now wrapped in an all new super-lightweight chassis!

#GobstopperIII #RCM #EJ20 #PrecisionTurbo #Twinbelt #900bhp+ #Antilag #NothingwrongwithanEJ20 #Itshowyoubuildem



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Mini Race Car x3 - SMRC, SMRC, SLS
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Sun Dec 08, 2019 5:02 am PostPost subject:
Jackstrath
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AK wrote:
aye, not really a 'car' or production based car... but it'l be a bit like a BRZ ... maybe Laughing

Still - the level of work going into the design/fabrication is whats opening my eyes.

Its no 'kit car'... they look to be simply designing a full build from the ground up.

USE - To break lap records I expect. Not sure what it'll be eligible for, but most likely TA type stuff. World Time Attack - no idea how it'll fit in with regs. Goodwood again?


aww yeh its porn, on every level. Maybe kit car was the wrong term. Its an engineering work off art really when you look at it.
Some amount of R&D has went into it and im sure it will all work on track nicely. Im not sure it would work with time attack regs, well not world time attack. Im sure one of the rules that stands out was the firewall had to remain in the stock position. And that what I was trying to say above, andy forrest for example took what was once a stock impreza and modded around the rules to work.

This car will be mighty, no doubt about it! Interesting they still have a F4 and not went to a F6, but I guess it will all be down to weight and the position of the weight! Like look where the engine is! Mega!
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Sun Dec 08, 2019 5:50 am PostPost subject:
AK
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Prob just sticking with what they know... Last 2 versions had ~900bhp H4's. Andy was something like 1200bhp (TT H6, think single turbo on last iteration) when wound up LOL Fucking bonkers

IF they were to take on WTA (not to current regs) - It'd prob need more power :O

Its a shame Andy sold the 'Storm Trooper' as this looks like it may have been an interesting bit of competition between the tuners Smile
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Sun Dec 08, 2019 7:33 pm PostPost subject:
Jackstrath
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What did GS2 do at knockhill time attack? It was damp iirc? or did it get a dry run ? What did the storm trooper finally do?
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Sun Dec 08, 2019 11:14 pm PostPost subject:
AK
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Cant remember GSII - can try looking back TA results

Storm Trooper - 48s IIRC
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Sun Dec 08, 2019 11:18 pm PostPost subject:
AK
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Day 8 and after the phenomenal response to yesterday's Gobstopper III engine post we thought we would show you what lies under the surface!

Our RCM Race Spec cylinder heads run without the use of traditional head gaskets instead using a special water/oil O ring sitting in a CNC cut groove on the head surface whilst combustion sealing is taken care of by an inconel gas ring at the top of each bore. More on that coming soon Wink

#RCM #GobstopperIII #Nogaskets #EJ20




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Impreza Race Car, 1200kg, 480bhp - SLS/SMRC
Mini Race Car x3 - SMRC, SMRC, SLS
911 - 1981 Air Cooled 3.0
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Tue Dec 10, 2019 12:57 am PostPost subject:
AK
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Day 9 – Our Gobstopper spec bottom end really shows how far you can push the OEM EJ20 closed deck block! We’ve been using this strong and reliable foundation for all our Gobstopper engine builds since 2005 collecting x3 Time Attack Championships and x2 Goodwood Hill Climb titles along the way! Running aluminium Nikasil coated liners with our own spec 75mm billet steel crank, conrods, head studs, p... See more — with Omega Pistons and Arrow Precision Engineering.



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Wed Dec 11, 2019 4:47 am PostPost subject:
AK
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Day 10 and after an amazing response to the previous days posts we thought we would wrap up the powertrain series of images with a final shot of the completed Gobstopper III engine assembly patiently waiting to being lifted into its new home!



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Mini Race Car x3 - SMRC, SMRC, SLS
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Thu Dec 12, 2019 1:18 am PostPost subject:
AK
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Day 11 and finally one for you chassis guys! Our double wishbone suspension uses in board Nitron Racing dampers for roll with a separate single damper to handle aero loading avoiding the need for us to run overly heavy springs to stop the car grounding out in high downforce situations.

Also in shot is the electric power steering pump which helps keep the package as compact and lightweight as possible!

#RCM #GobstopperIII #Nitron #Aero #ChassisArt #Fabrication — with Nitron Racing Systems Ltd.



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Impreza Race Car, 1200kg, 480bhp - SLS/SMRC
Mini Race Car x3 - SMRC, SMRC, SLS
911 - 1981 Air Cooled 3.0
500 - 1969 Fiat 500 L
X5 40d M Sport
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Fri Dec 13, 2019 12:17 am PostPost subject:
AK
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drool

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Day 12 – and yet another piece of British engineering excellence from official technical partner Alcon Specialist Brake & Clutch! Unlike the carbon/carbon brake system previously used on both Gobstopper I and II, our new 380mm carbon ceramic setup removes any requirement for a warm up procedure making it the ideal material for shorter sprints and hill climb events.

The 6 piston billet aerospace grade aluminium alloy calipers are machined for strength, high stiffness and super lightweight. When combined with the carbon ceramic discs this kit offers similar weight saving advantages of a full carbon/carbon kit but with far superior performance when cold.

#RCM #GobstopperIII #Alcon #CarbonCeramic #Nitron #Samco #UKmade — with Alcon Specialist Brakes & Clutches, Nitron Racing Systems Ltd and SamcoSport.



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Impreza Race Car, 1200kg, 480bhp - SLS/SMRC
Mini Race Car x3 - SMRC, SMRC, SLS
911 - 1981 Air Cooled 3.0
500 - 1969 Fiat 500 L
X5 40d M Sport
Mini Cooper Park Lane
MB Sprinter Camper
Track Scotland
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Sat Dec 14, 2019 6:37 am PostPost subject:
AK
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series and plenty of exotic materials on display today! The centre exit exhaust system is constructed using 0.7mm Inconel and expels gases efficiently into a low pressure area at the rear of the car above the main carbon aero tunnels through its 3.75” bore pipework.

Packaging the suspension components amongst the T45 steel chassis and advanced aero pieces in Gobstopper III was certainly a challenge but again official technical partner Nitron Racing Systems worked closely with the RCM team to supply a compact, dyno tuned spring and damper combination more than capable of handling the downforce loading this car will generate on track.

#RCM #GobstopperIII #NitronRacingSystems #Inconel #Downforce — with Nitron Racing Systems Ltd.



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Impreza Race Car, 1200kg, 480bhp - SLS/SMRC
Mini Race Car x3 - SMRC, SMRC, SLS
911 - 1981 Air Cooled 3.0
500 - 1969 Fiat 500 L
X5 40d M Sport
Mini Cooper Park Lane
MB Sprinter Camper
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Sun Dec 15, 2019 8:29 am PostPost subject:
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Day 14 – Whether it be F1, WRC or MotoGP over the recent years it’s become very clear that maximising the advantages offered by improved aerodynamic design has become the most important area of development when chasing the ultimate lap time.

Andrew Brilliant of AMB Aero, already synonymous with many successful projects in World Time Attack as well as other high level motorsport disciplines, was brought on board at the time the chassis was being built.

Tasked with producing an aero package for Gobstopper III, AMB Aero using the latest CFD modelling techniques, were able to accurately simulate aerodynamic effects against the cars body shape continually refining each piece to achieve a package which perfectly balances both high downforce with a minimal overall drag factor. — with AMB Aero.




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Impreza Race Car, 1200kg, 480bhp - SLS/SMRC
Mini Race Car x3 - SMRC, SMRC, SLS
911 - 1981 Air Cooled 3.0
500 - 1969 Fiat 500 L
X5 40d M Sport
Mini Cooper Park Lane
MB Sprinter Camper
Track Scotland
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