wtcc5

@Pylon80: Yes, the white plastic will leave as soon as I find enough people to jump on board the carbon conversion train. @Fomoco90: I posted the link to all .stl-files above… The aero bumper would need a redesign for a print. I know what to do, but time is limited these weeks. @all: Please let me know here if there is interest for the conversion shown in the picture below: The grey parts made from carbon will fit plug and play to your Group C chassis. The black parts are 3d-printed ride height shims and white are not included parts. I would need about 20 pieces made for my manufacturer to start. The price will be approximately 50€ plus shipping to your home.

A longer post coming up. I filled the small slots of free time with developing parts for the Group C series cars, but then was so exhausted and lazy to post it step by step... sorry. @ruebiracer: The MadCap project will come, but not before next year I assume. The KRv5.2 development for the KleinSerie World Championship is next in line. The Kinzigtal Event is already blocked and the Room is booked. As it has a Kyosho event, @Quincyand I also got new Kyosho cars for it too When driving the F103GT some years ago, I worked a lot with the friction-plate-setup. Until today this setup has its fans and it is for me typical Tamiya pan car design. As it also works pretty good, I want to have it on my R91 runner too. It is easy to implement regarding the design, but to make it perfect, it cost more time than thought. This is because the upper pod damper mount differs from that of the F103. Also some parts aren't available any more and I want it to work on more than just my car. One of the early designs: The front shall feature a vertical servo position. Unfortunately the links will collide with the upper frame. A new design, then solved that and got rid of the unavailable aluminum front damper mount: This is how I drove yesterday and proved the concept: Now I wait for the invoice of my manufacturer for the carbon parts. The Porsche was in need of rear wheel covers. These were an easy task and look superb (still need paint): They press fit so are maybe not good for racing, just show and rolling around showing off Then I made the diffusor part for the Porsche. This took a lot of hours to get it right. Fortunately the first design was spot on and just needed small detail changes to make it perfect: It consists of three parts to simulate the towing-eye and the air-jack-post. Then it gets installed on the body: The C11 bumper print was outsourced to a friend, who has more skills how to handle TPU material than me: Last saturday Mario and I let our Group C cars fly at Indoor Racing Senden. I am happy how the car handles, but it needs a lot of skill to run it on the limit and hit the sweet spot. The friction-plate-conversion is a must for these chassis in high-grip condition. Marios all stock car was very twitchy to drive in comparison: Had the 956 with me that day to create more attention for these cars as it looks fabulous: All my designs are also available now at Thingiverse for you guys. I even made a friction plate conversion for you to print (and so save money). Check it all out here: https://www.thingiverse.com/wtcc5/designs Enjoy!

Thanks! MCI who else I made so much more for these cars, but found no time to post it, yet…

Thanks guys @Pylon80: Would love to have a Mazda and a Jaguar, but chances are low to get them for an ok price. At the moment, I have other things in the pipeline for these chassis and the 956 is not finished. I hope these things will entertain you, too

I put two more hours into this body. I discovered that for this livery the wing plates have to be blue on the outside too. So another paint session was needed: Then I could install the wing and add the sticker: So this is it. Not difficult to build, but it takes a lot of time. Some more pics with the body on the C11 chassis: The taillights add so much realism to it

@rich_f: Ah, yes! I forgot The diffusors are ready for download here: https://www.thingiverse.com/wtcc5/designs Enjoy!

I am slowly coming forward with this body. It is easy to underestimate its complexity. What you see next, took eight hours… Well it is worth the struggle no doubt As you see, not finished yet. @RennsportEd: I think of them the same way. The C11 wheels look fantastic on this body. I am normally not a fan of black wheels, but here they look racy and realistic. Unfortunately they will leave for dished wheels front and rear.

Porsche 956 time! Body first this time with the C11 chassis used temporarily as body stand.

C11 diffusor printed and installed:

Spent another 5 hours with CAD to make the Mercedes C11 diffusor: The wing stay is now mounted on the diffusor, because the original is much too deep and interfered with the center part of the diffusor. As I want a balance of scale look and performance, this was (in my opinion) a necessary step

The installation went nearly fine… I hit all the difficult marks, but missed the easy one Which results in the kit spur not fitting. As I wanted to have the diffusor on the car, I switched to a Modul 04 93t spur. Enjoy: I decided to make a redesign that is more scale for the R91 and make variants for the 104t/70t kit spur as well as the 93t.

… too much greed everywhere… I could print the diffusor and it became very nice: Installation comes next.

I will try some more things for these chassis. Somehow, I thought about a proper bumper for the C11. The classic honeycomb design with a branding: Easy to print and nice to look at. With so much space in front of the chassis... why not make it an aero-bumper? I added two front diffusors and closed all open surfaces at the bottom: Now, this is a more challenging print...

These are the best friends Very nice pictures!

So… how many cars did you drive that day

Practicing my CAD skills on a diffusor design for these chassis. I try to combine realistic look with function, although the pod layout is not helping. It is also more difficult than hoped. Work steps: Comparing it to a design "juanmedinar20" uploaded on "printables.com": Now, I need to make a test print and hope for the best

In the meantime @Fuijos body arrived: this one is a beauty! No scratch, with body parts and very well build. Saying thank you isn't enough. This generous gesture will not be forgotten! I went on to the CAD-software and draw the rear wing mount and the front body post mount, taking measurements from the original R91 parts sprue. Then the printer took over: The result: In anticipation of the delivery of the body, I build another C11 chassis during the week. On it I installed the new parts. The front body mount brace: ... and the rear wing stay: I wondered why the "GoodYear" sponsor decals were missing. Fuijo told me these were not part of the rere decal sheet. You must wonder why some companies refuse to have free advertisement? No problem for me fortunately I have a huge sticker "collection" and found six fitting ones for wing and body: While at it, I put on the tire stickers and painted the C11 wheels with a chrome pen to get closer in look to the original-hard-to-get-R91 wheels. This all came together to this: What a view

@-maydeN: Thanks Yes, it is. I ordered another C11 Prices went down to 109€ including shipping in Germany The prices for spares, foam tires and body became so high in the last months, it is much cheaper to just buy the whole kit in a sale...

@skom25: Sorry to hear that. I am indeed in a lucky position/location to have nearly every (race-) track type within a 120km radius. Starting with Offroad 1:8 dirt and 1:10 carpet only 10 km away. Then 28km away a 1:10 Onroad/1:10 Offroad/1:28 Onroad Carpet Indoor tracks. Further away then three outdoor Onroad asphalt tracks. After the successful race with my TT-02 conversion (see TC Designs), the next race (8. December 2024) is one for the XQ11. It will be a DMC Sportkreis Elektro Glattbahn event, so I can use the strong Hobbywing V10 G4 motor together with my beloved BWOAH! body and a tire of my choice in the EGTWHO class. Today I tried a Sorex tire (28 with black insert) and it didn't work at all. I later switched to the previous used RCK 28MX tire and suddenly was glued to the track. The track development was strong, even though we were just three guys today. I even had grip roll in the fast corners and was forced to make crazy glue on the sidewall of the fronts. This then made the car behave much better and the fastest laptimes dropped down to 9.3s. I never was so fast on this track. The XQ11 Hara feels nimble and has rotation galore. I increased the droop in front and used a 1.3mm anti-roll-bar in the end. This all made the car more stable in this high-grip environment. I missed the 32nd lap on the five minute run by some tenth. These could easily be found if I have a bit more confidence and stable behavior. I will work on the setup (rollcenter --> inner A-arm mount shims) next time. I also ordered a Matrix tire, which should be even better than the RCK 28MX tire. Today was a lot of fun. The car overall was on another level. Even the motor didn't feel that strong with this chassis. Again, I could prevent the body from getting dents. Which is my main goal every time

Hi! These are Tamiya h-parts 9005434: https://www.modellbau-seidel.de/index.php?firma=Tamiya&best=9005434

This thread comes with a bit of delay. When the C11 was announced about two years ago, I ordered two. One went into the NiB stock and one was build in February last year. It was also then, when I checked my favorite R/C shop and found a new Nissan R91CP body set plus all body parts for it (except cockpit and sticker set). This went into the box, too. Unfortunately I didn't made any build photos of the C11, because of being selfish and wanting to enjoy the build Of course this car got some Hop-Ups. First the result of the C11 build: Why the gold braces you might think. I wanted to make it golden all around (the body too), but then lost all motivation as I saw how the wing has to be masked. At that time I could buy a factory painted wing in silver, so the body became silver too. As Tamiya cheaped out of proper body parts, I bought the body parts for the Mercedes C-Class DTM body and used the mirror and wiper from it to complete the C11. Another thing, that bothered me, was the position of the rear wing. The real car has it sitting higher and a bit closer to the body. I did some drawings and printed three versions until I was satisfied. The chassis received 90s electronics and a fitting black and gold Sport Tuned motor. The yellow damper was replaced by the short Hi-Cap variant. And of course ball bearings for the front tires... come on Tamiya Now, with the Porsche 956 being so late (Germany seems to be the last country to get the shipment...), I wanted to build another Group C car. So the Nissan R91 will be next here.

Race Report from the RCKleinSerie event at Indoor Racing Senden The old body was beaten up from last years action pretty much. I felt the urge to make a new one last week. Same livery, but optimized and combined with a MCIracing Toyota GT One sticker sheet: On Saturday I went to the track for practice. It became a productive day for me, thanks to European- and World-Champion Dominic Greiner. He was looking for company on track and I wanted to practice race rhythm. So we found each other on the same pace with different cars. Dominic tested a new FWD prototype for Serpent and is as fast with it as I am with my KRv5.1 4wd Still our runs together made this day satisfying. I haven't driven under pressure for the whole year and wanted to practice this. Dominic tested my focus, by staying close when I was in front. We switched positions often and tried to hunt us. For me it was a revelation to see how much time I loose when missing the apex by some centimeters, also how much speed you need to carry through the corner every time. I learned a lot and gained a lot of confidence in our last run when not cracking under pressure for a long time. You seldom get a chance to run with this level of driver this close and I was afraid to screw up, damaging both of our cars. In the end our runs really made my day and gave me a good feeling for the upcoming race day. Sunday came and I was still pretty nervous again. The typical: "I have done that a hundred times, but not if someone watches." -thing. On the first qualifying run I really got a shot of adrenaline which interfered with my motoric capabilities. It hindered my fine precise movements and made the fast chicane difficult to drive. Luckily my adrenaline seemed to be drained for the rest of the day as I calmed down more with each run. The outcome for the GT-Sport (my class) was very low. We had four entries and one guy didn't show. The other two drivers were relaxed. One just wanted to attend a race, took all the stuff he had at home and put together a (TT-02) car. He drove slow but clean pace, not crashing and with a good situational awareness. The second driver drove this class at the Augsburg RCKleinSerie World Championship Warm-Up just one week earlier. Tim Gehrling finished second behind my great rival from 2019: Chris Funke there. He used the Xpress XQ2S and I expected him to be a lot closer than the other guy. Qualifying then showed that I had found a very good setup and overall pace. I won each heat with two laps advantage, which was definitely more comfortable than thought. The finals over eight minutes resembled the qualifying. With my gained confidence, I blasted away in the first one and fast built a lead... to roll the car three laps in Tim then asked jokingly, if I try to make it more thrilling for us The track marshal was fast and I continued on, this time without more mistakes. In the second final, I make a small mistake again, again without consequences. I am very proud of the third final: To conserve the tires, I switched rears and fronts. You shouldn't do that normally, but I could risk it. Surprisingly the car loved that bit more steering and rotation, while staying planted. This time I made no mistakes during the never ending eight minutes. The car was great through our fast sweepers, where I could run through full throttle. This was an easy win. I am extremely happy that the v5.1 is a step forward regarding driveability and control on the limit. The v4.1 and v5 had a tendency to loose the rear suddenly, especially with thick diff oil. This version translates diff oil into safe rotation. Good for drivers with limited abilities like me. And the body looks like new also Win-Win! Look at the cool prize the winners got instead of cups or medals:

Thanks @RichieRich . I see it like you. The car had its development and it is completed. And this is what this thread is for only.

@Aurigarius: I just wrote it as it has happened. You were angry and hardly allowed me to say anything. And if I did, you cut me off. So, I don’t know what should’ve motivated me to speak to you again in person (the same day). Seeing on Fb and at Kinzigtal how you reacted to criticism to your new race format idea, didn’t left an impression that you like discussions about topics you already have a opinion to, too.

@chen chun hsiung: Hi! Sorry, I missed your inquiry. If this is still on your mind, please send a PM. The same happened as last year. After the indoor season (2023/2024) I was a bit fed up with Onroad and development of this car. The summer break was much needed. I gained a lot of motivation to work with the v5.1 again. The car will have its first race for the RCKleinSerie in two weeks from now. So where did I left? Last winter I ran one battery indoors with this version. It already felt promising on track, but very soft on the spring. Until some days ago, I thought, I made a mistake with the damper mount geometry. The first run after the summer on our indoor track was ok. Not great, but it never is after summer. The track misses grip and the line has to be used several days to gain back its traction. The car behaved ok, but was beyond the sweet spot. It lacked steering and asked for a wake driver in fast sections. The rear had a tendency to step out of line. Well, on the first day the focus is to not crash the car and relearn the rhythm. I did that and setup wise just made sure the ride height and tire loads were correct. As homework, I noted to make anti-roll-bars in two more wire thicknesses (1.2mm & 1.5mm, with 0.9mm already on the car): The second practice day (a week ago), I focused on an easy-to-drive-setup and worked with the bars and droop. The day started with laptimes beyond 10s. The car felt much too soft, so I tried harder springs, which felt good on the table, but terrible on track. The front was unwilling to turn-in and the rear tried to overtake the front in the fast corners. So, I stayed with the proven 2.5-2.8 in front and 2.6 in the rear. Limiting the droop was very effective. Even though the car feels very soft, it hardly rolls with increased droop. The rear was still too nervous. I tried a 1.2mm bar in the rear and voilá, the rear was planted from then on. Overall my best time got down to 9.9s/lap. Again, after that day, I noted different setup changes and tasks on my Todo-list: 1. I shimmed the lower inner arm mounts upwards The rear got 2.5mm all around. 2. The front was totally shimmed wrong with too much anti-dive. The FR-mounts now are shimmed 2mm and the FF-mounts 1.5mm: 3. While at it, the rear diff received 2000cst oil for more rotation and 4. I replaced the 44mm drive shafts, which are slightly too short with the new TRF421 45mm versions. Chassis overview: Today then, I tried the new setup and was instantly convinced. During the day, I could further improve balance and rotation while making the car super easy to drive. I made more changes to the roll-center by shimming the inner upper arm mounts, increased the droop a bit more in the rear and tried harder oil in the rear differential. And while the tires were getting close to falling apart, I managed to improve my times by 3 tenths/lap to a 9.6s and 31L in 5:08,0 minutes: That was a satisfying day with an important step for my race setup. Next time, I will use new tires, confirm my setup and see if I can squeeze out a bit more rotation for that last tenth