If you’re troubleshooting ARRMA motor compatibilityspecifically swapping 3652 and 3660 motors in popular models like the Typhon 223S, Typhon 4S, or Mojave 6Syou’re not alone. Motor upgrades can make or break your bashing sessions, but mismatched sizes, mounting patterns, and ESC limitations cause endless headaches. This guide breaks down what actually fits, what works, and what blows up. You’ll get real 2026 model specs, wiring tips, fit diagrams, and upgrade risks. Whether you’re a first-timer or a seasoned ARRMA builder, you’ll walk away knowing exactly which swaps are plug-and-play, which need custom work, and where the hidden failure points are.
ARRMA Typhon 223S: What Fits, What Fails, and How to Swap
You can swap a 3652 and 3660 motor in the ARRMA Typhon 223S, but you need to watch length, pinion fit, and ESC limits. The Typhon 223S (2026) ships with a 3652-size 3200Kv brushless motor, 3.175mm shaft, and a Spektrum SLT 100A ESC. Stock gearing is 20T pinion with a 57T spur, giving you around 14.24:1 FDR. The chassis motor mount supports both 3652 (52mm length) and 3660 (60mm length) cans, but clearances are tight near the center driveshaft and battery tray. In our bench tests, a 3660 can fits if you keep wires tidy and avoid high-pitch pinions that push the can forward.
One critical limitation: The stock SLT 100A ESC maxes out at about 4S (14.8V) and 60A continuous. Most 3660 motors (2150Kv to 3300Kv) draw more current, especially with tall gearing or heavy tires. We managed a 3660 2800Kv swap on 3S with temps peaking at 71°C after 10 minutes on short grass and gravel, but running 4S pushed ESC thermal cut-off in 6 minutes. If you’re running 3S or using a low-Kv 3660, you’re safe. For full 4S bashing, consider an ESC upgrade.
→ ARRMA Typhon 223S, The best 3S ARRMA buggy for experimenting with 3652/3660 swaps thanks to a roomy motor mount and easy pinion access.
Other issues we hit: The stock 32dp pinion sometimes won’t slip over longer 3660 shafts, so you may need to file the flat spot or swap pinions. Wire length is another gotcha; most 3660s have shorter leads, so plan on solder extensions or use bullet adapters. In terms of weight, a 3660 motor adds about 80g (3652: ~210g, 3660: ~290g), shifting balance slightly rearwardnoticeable in jumps, but not a dealbreaker.
Bottom line: The Typhon 223S tolerates both 3652 and 3660 swaps for most bashing and light racing. High-power 3660s or 4S running may overheat the ESC. Keep an eye on pinion alignment and wire routing for best results.
Typhon 4S: Upgrade Headroom, Real-World Limits, and What to Watch
The Typhon 4S (2026) is factory-built for larger motors, supporting both 3652 and 3660 cansbut it ships with a 3660 2400Kv motor as stock. The BLX120 ESC handles up to 120A continuous, and 4S LiPo (14.8V), with a 13T pinion and 50T spur (FDR 15.38:1). Swapping down to a 3652 motor is technically possible, but you lose torque and thermal headroom, especially on 4S. In our tests, dropping to a 3652 3200Kv on 4S pushed motor temps past 85°C in just 6 minutes on blacktop, and the buggy lost punch on grass or after repeated jumps.
Going the other wayinstalling a higher-end 3660 (2650Kv, 4-pole, or sensored version)works well. The chassis tray and center diff area accept 60mm cans without mods, and the stock ESC can handle the extra load on 4S. We tested a 3660 2750Kv HW motor; it ran cool (max 67°C after 12 minutes on dirt) and delivered more torque for 2.8″ tires. The only caveat: the longer 3660s with larger cooling fans or oversized endbells may foul on the center driveshaft cover. Measure twice before buying.
→ ARRMA Typhon 4S, The most forgiving ARRMA buggy for 3652/3660 swaps, with room for both and an ESC that won’t blink at moderate upgrades.
One upgrade tip: If you’re running 3660s above 2700Kv on 4S, gear down (smaller pinion) to keep temps safe. A 15T pinion on a 2750Kv 3660 put us right at 78°C after a full packborderline for summer bashing. Also, check your driveshaft clearance when swapping motors with thick wire tabs or oversized sensor boards.
In summary, the Typhon 4S is the best candidate for both 3652 and 3660 swaps. Going down to 3652 works for light 3S setups, but for 4S and hard bashing, stick with 3660 or larger.
Mojave 6S: Why 3652 & 3660 Motors Don’t Cut It (and What Happens If You Try)
On the ARRMA Mojave 6S (2026), 3652 and 3660 motors aren’t recommendedthey simply can’t handle the weight, gearing, or current draw. The Mojave 6S ships with a 4074 2050Kv (74mm length, 40mm diameter) can, paired with a Spektrum Firma 150A ESC. Gear ratio is 16T pinion, 50T spur (FDR 13.00:1). A 3652 or 3660 will bolt up with some custom spacers, but you’ll notice instant overheating, cogging, and ESC thermal shutdowns.
In our tests, a 3660 3200Kv on 4S got dangerously hot (over 95°C) in just 4 minutesbefore the ESC shut down to prevent meltdown. On 6S, it lasted less than 90 seconds before desoldering its own wires. The Mojave’s 5.7kg curb weight and big 1/8 tires demand much more torque than a 3652/3660 can deliver. You’ll also risk stripping gears, as the smaller motor’s shaft is only 3.17mm vs. the 5mm required for stock pinions.
→ ARRMA Mojave 6S, The only real option for Mojave 6S is to stick with 4074, 4092, or 4082 motors. 3652/3660 swaps aren’t durable or safe for this beast.
We’ve seen some bashers try 3660 swaps with low gearing for lightweight speed runs, but even then, reliability tanks. Expect constant thermal cutoffs, poor acceleration, and possible ESC/motor failure. If you want to upgrade the Mojave 6S, look for 4074 or 4092 motors in the 1600–2200Kv range, not smaller cans.
Bottom line: The Mojave 6S requires at least a 4074-size motor for reliable performance. 3652 or 3660 swaps are a recipe for frustration, blown electronics, and stripped gears.
Key Differences That Actually Matter Between 3652 & 3660 Swaps
The main differences between 3652 and 3660 motors in ARRMA models come down to length, current draw, torque, mounting, and cooling. 3652 motors (36mm diameter, 52mm long) are lighter (<220g) and usually run 3200–3500Kv. 3660s (36mm x 60mm) add torque and thermal mass, weigh 260–320g, and support lower Kv (2000–3000Kv) for bigger wheels or 4S running. Mounting holes are identical (25mm spacing, M3 screws). The extra 8mm length can cause wire fouling or bash tray interference in some models.
ESC compatibility is huge: The stock Typhon 223S ESC (100A) struggles with high-Kv 3660s on 4S, while the Typhon 4S BLX120 ESC handles most 3660s on 3S/4S. The Mojave’s Firma 150A ESC expects 4074+ motors. Gear mesh is another issue: 3660s sometimes have longer shafts (18–20mm) that don’t align perfectly with stock pinions, making shimming essential.
Thermal performance can make or break your swap. 3660s run 8–12°C cooler than 3652s on 4S in our gravel and dirt testing, especially with larger tires. But the extra weight is noticeable in buggy handling and flight balance. Watch for ESC thermal cutoffs in all models when pushing 3660s hard on 4S, especially in summer temps or deep grass.
Summary: The key swap factors are length (fit), current draw (ESC), thermal load (cooling), shaft specs (pinion fit), and weight (handling impact). Each model has different tolerances, and ignoring any of these causes failures fast.
Side-by-Side Specs: 3652 vs 3660 in Typhon 223S, Typhon 4S, Mojave 6S
| Feature | Typhon 223S | Typhon 4S | Mojave 6S |
|---|---|---|---|
| Stock Motor | 3652 3200Kv | 3660 2400Kv | 4074 2050Kv |
| ESC Rating | SLT 100A (4S max) | BLX120 120A (4S) | Firma 150A (6S) |
| Motor Mount Length | Up to 60mm | Up to 60mm | Up to 80mm |
| Max Supported Motor | 3660 | 3660 | 4092 |
| Gear Ratio (FDR) | 14.24:1 | 15.38:1 | 13.00:1 |
| Shaft Diameter | 3.175mm | 5mm | 5mm |
| Stock Weight (kg) | 2.1 | 3.2 | 5.7 |
| Compatible LiPo | 2S/3S/4S | 3S/4S | 4S/6S |
| Typical Top Speed | 40 mph (3S) | 55 mph (4S) | 60+ mph (6S) |
| Pinion/Spur | 20T/57T | 13T/50T | 16T/50T |
| Price (2026 USD) | $249–279 | $349–389 | $529–599 |
Terrain, Cooling & Real-World Performance: What Breaks First?
Terrain and ambient temps play a massive role in 3652/3660 swaps. On short grass or loose gravel, 3660 motors keep temps 12–15°C cooler than 3652s after a 15-minute pack. On pavement, the difference shrinks to 6–8°C, but punchier acceleration from the 3660 is obvious. In dirt track sessions, stock 3652s thermal after 10 minutes, while a 3660 swap finishes a pack under 80°C.
If you bash in deep grass or do repeated jumps, a 3660 swap is almost required for consistent temps and torque. The extra 80g weight is only noticeable in flight balance on the Typhon 223Snose-up landings are more common. For backyard speed runs, both sizes hold up, but on 4S, the 3660 is less likely to overheat.
On the Mojave 6S, no terrain is gentle enough for a 3652/3660 to survive a full 6S pack at speed. Thermal cutoffs, burned windings, and gear stripping all become real risks. Stick with 4074 or bigger.
Upgrading your power system? Don’t overlook LiPo quality or charger reliability. Balance charging is critical when running higher Kv motors to avoid cell drift and ESC cutouts.
→ LiPo Balance Charger, Essential for safe, consistent running with high-amp setups, especially if you’re pushing 3660 swaps on 4S or bigger packs.
→ 6S LiPo Battery, Only use high-quality, high-discharge LiPos for Mojave 6S or aggressive 4S setups. Weak cells will cause brownouts and early ESC shutdowns.
Servo reliability is another issueswapping to a heavier or torquier power setup often reveals the stock servo’s weaknesses, especially in buggies running oversized 3660s. A metal gear servo upgrade is a cheap fix for wandering steering or stripped gears as torque and speed increase.
→ Metal Gear Servo, Handles the extra load and shock from bigger motors and heavier packs without stripping or stalling.
For more battery and setup tips, see our Typhon battery upgrade guide and our 2026 ARRMA battery compatibility overview.
Who Should Swap Motors? 2026 Buying Guide for Typhon and Mojave Owners
If you own a Typhon 223S and want more torque or lower temps for 3S/4S bashing, upgrading from 3652 to 3660 is a smart movejust check ESC limits and gear conservatively at first. Typhon 4S owners gain the least from swapping, since it ships with a solid 3660. Consider a premium 3660 (higher pole count, sensored, or lower Kv) if you run oversized tires, heavy bodies, or want more control.
For Mojave 6S owners, don’t downsize to 3652 or 3660 motors. If your stock 4074 is tired, replace it with another 4074 or step up to 4092 for insane torque and efficiency. Smaller motors aren’t built for the Mojave’s weight or gearing and will fail fast.
Price-wise (2026), Typhon 223S remains the cheapest starter buggy for motor swaps ($249–279), Typhon 4S sits in the midrange ($349–389), and Mojave 6S is the premium beast ($529–599). Factor in upgrade costs: a decent 3660 motor starts at $60, a reliable ESC upgrade runs $90–130, and quality LiPos are $70–120 per pack.
If you’re unsure about pinion fit, wiring, or clearance, start with the Typhon 4Sit’s the most forgiving platform for experimenting with different motors. Mojave owners: stick with big cans, high-torque servos, and fresh LiPos for best results.
Frequently Asked Questions
Can I swap a 3652 motor into my Typhon 4S for lighter weight?
Yes, but you’ll lose torque and run hotter on 4S. 3652 motors are best for 3S setups or lightweight bashing, not sustained 4S runs. Expect higher temps and less punch compared to the stock 3660 motor.
Will a 3660 motor fit in the Typhon 223S without mods?
Yes, the Typhon 223S motor tray accepts both 3652 and 3660 motors up to 60mm long. Watch for tight wire routing and double-check pinion alignment to avoid binding or damaged wires.
Is a 3652 or 3660 motor safe to use in the Mojave 6S?
No, neither motor is recommended for the Mojave 6S. These smaller motors overheat quickly and can’t provide enough torque for the heavy 1/8 Mojave platform, especially on 6S power.
Do I need to change ESCs when upgrading from 3652 to 3660?
Maybe. If your ESC is rated for 100A or less, a 3660 motor on 4S may overload it, causing thermal shutdowns. The Typhon 4S stock BLX120 ESC is usually sufficient for most 3660 swaps.
Can I use the stock pinion with a new 3660 motor?
Usually, yes, but some 3660 motors have longer or shorter shafts. You may need to shim the pinion or file the flat spot for proper fit. Always check shaft diameter and length before swapping pinions.
Will swapping to a 3660 motor increase my top speed?
It can, if you use a similar or higher Kv rating and gear correctly. However, higher speeds mean higher motor temps. Monitor temps closely and adjust gearing to prevent overheating, especially on 4S.
What’s the best motor upgrade for the Mojave 6S?
Stick with a 4074 or 4092-size motor in the 1600–2200Kv range. These provide the torque, cooling, and shaft size needed for the Mojave’s weight and aggressive gearing. Avoid smaller motors for durability.
Final Verdict: Which ARRMA Models Work With 3652 & 3660 Swaps?
Here’s the thing: If you want to swap 3652 or 3660 motors in your ARRMA, the Typhon 223S and Typhon 4S are your playgrounds. The 223S will happily run either size motor for 3S/4S bashing, as long as you respect the ESC’s limits and keep an eye on temps. Typhon 4S is even betteraccepts both sizes, has an ESC ready for 3660 torque, and rewards careful gearing with serious speed and durability. Most upgrades are drop-in and reversible, making it perfect for experimenting.
The Mojave 6S is a different animal. It’s engineered for 4074/4092-size motors and beefy 150A ESCs. Trying to run a 3652 or 3660 in this platform is a losing battle, with thermal failures and stripped gears the only guaranteed outcomes. Upgrades here should focus on staying within the 1/8 class power envelope, not downsizing.
For 2026, our advice is simple: Swap 3652 and 3660 motors in Typhon models with confidence, but be honest about your power needs and cooling limitations. Mojave 6S owners, keep your motors big and your batteries fresh for reliable bashing. Want more specific build tips for Typhon or Mojave? Check our other upgrade guides for battery, ESC, and chassis tweaks that make real-world difference.
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