CEN F-250 Crawler Build Once I saw CEN Racing's lifted F-250 RTR, I knew I wanted to turn it into a rock crawler. The first mod I performed was adding the much larger and stronger Ryft axles. Then, I corrected the suspension geometry to optimize articulation and stability using a mix of Axial's M6 stainless links. I added custom underpinnings between the chassis and suspension mounts to stiffen the chassis. I rearranged the chassis mounts and braces to optimize the weight balance and moved the battery tray to the front to benefit in crawling. I then added RC4WD's two-speed Wraith transmission for the truck to quickly get to the rock piles and gear down for the ascents. To mount the gearbox, I made a custom Delrin skid plate and dropped the position of the transmission to lower the center of gravity. Finally, I switched the stock front bumper for Axial's Basecamp bumper, which fits the front nicely, and provides a superior approach angle. Motor/ESC: Castle Mamba X/1412-3200kV Servo: NSDRC RS1 Wheels/Tires: SSD Challenger 2.2/Pro-Line Baja Pro X 2.2 Shocks: GMade XD Diaphragm 103mm https://i.postimg.cc/rmhw7Zj5/IMG-0024.jpg https://i.postimg.cc/jdfRhSpH/IMG-0341.jpg https://i.postimg.cc/N0dt09Xc/IMG-0342.jpg https://i.postimg.cc/7ZMDpQYb/IMG-0344.jpg https://i.postimg.cc/PxNjvXb8/IMG-0346.jpg https://i.postimg.cc/YSrkkfhR/IMG-0347.jpg https://i.postimg.cc/dVKwNKFz/IMG-0348.jpg |
Re: CEN F-250 Crawler Thats pretty dang cool! |
Re: CEN F-250 Crawler Is there a pic attached to the first post? Sounds like something I'd like to see, but there's nothing visible using my PC and either Chrome or Edge browsers... |
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Sounds like a cool project "thumbsup" |
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Re: CEN F-250 Crawler Sweet build man, that blue really pops!!! |
Re: CEN F-250 Crawler Appreciated! Big Blue Beast... "thumbsup" |
Re: CEN F-250 Crawler those axles look way to big under that truck but hay |
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I know it's not a scale rig, but the performance is amazing. |
Re: CEN F-250 Crawler It looks great! You did a good job, the long wheelbase gets me though. |
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The performance, despite its size, is incredible. Yes, it will get hung up on breakover, but I'm working on that with a 3D-printed skid plate. |
Re: CEN F-250 Crawler Thats awesome!! Looks way better! Are the ryft axles a lot bigger than the ar60s? |
Re: CEN F-250 Crawler Build Whoa I missed this one. I like wild builds like this especially when you go drive it and it surprises you. Love it. |
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The Ryft axles are larger all around. They aren't significantly wider, but they are much thicker and beefier. |
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Re: CEN F-250 Crawler That is really cool, do you have a comparison pic of what the project started as? |
Re: CEN F-250 Crawler 1 Attachment(s) Quote:
Attachment 402261 |
Re: CEN F-250 Crawler WOW, that is a wild transformation. With the 2.2 tires, and the Ryft axles, with the 2 speed, how would the final drive work out compared to a stock TRX4 2 speed? |
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It now has a very forward weight bias, with all of the weight down below with brass. Note the original chassis configuration with the battery in the back. I removed any parts that were not needed and moved the tray to the front. https://cdn.shopify.com/s/files/1/02...g?v=1661867790 With the two-speed and the rock racer/crawler mode with the Mamba X, it can race to the rocks, then climb them. I don't have the final ratio in my head, but I'll work that out and see: Axles are 38/13, so 2.92. The RC4WD two-speed: 1st is 5.05:1, and 2nd is 1.78:1. I'm running an 80T Robinson spur with a 20T or 4:1. So, 1st gear FDR is 58.58:1, and 2nd gear is 20.81:1 at the hexes. I can calculate the speed with the Kv and 2.2s later. |
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