What is the speed of KM short card? Hot topics and performance analysis across the network
Recently, KM short card (Killerbody Maverick) has become the focus of the field of remote control car models, and its speed and performance have become a hot topic among players. This article will combine the popular discussions and data on the entire network in the past 10 days to provide an in-depth analysis of the speed performance and related technical parameters of the KM short card.
1. Basic performance data of KM short card
| Project | parameters |
|---|---|
| Vehicle type | 1/7 scale electric short-haul truck |
| Original motor | 4274 brushless motor (2000KV) |
| Original ESC | 120A brushless ESC |
| battery support | 4S lithium battery (14.8V) |
| Official speed | 80-90km/h (original factory configuration) |
| Modification potential | Up to 120km/h (6S battery + gear ratio adjustment) |
2. Key factors affecting speed
1.Power system configuration: The KM short card is equipped with a 2000KV brushless motor and a 120A ESC, which can achieve a speed of more than 80km/h with a 4S battery. If you upgrade to a 6S battery (22.2V) and adjust the gear ratio, the top speed can exceed 100km/h.
2.Tires and ground conditions: According to the measured data of players, different road surfaces and tires have a significant impact on speed:
| Ground type | tire type | Actual measured top speed (km/h) |
|---|---|---|
| asphalt road | road tires | 92-95 |
| sandy dirt road | Studded tires | 78-82 |
| grass | all terrain tires | 65-70 |
3.Comparison of modification plans: Speed performance of popular modification combinations:
| Modification plan | Extremely fast improvement | cost estimate |
|---|---|---|
| 6S battery + large gear ratio | +30km/h | ¥800-1200 |
| High KV motor (2200KV) | +15km/h | ¥500-800 |
| Lightweight chassis | +5-8km/h | ¥300-500 |
3. Hot topics on the Internet
1.security controversy: Many players pointed out that modifications exceeding 100km/h need to strengthen the shock absorbers and braking systems. Recently, there have been discussions about cases where users failed to upgrade the brakes and caused rollover accidents.
2.Endurance test: Battery life is significantly shortened at extreme speeds:
| speed range | 5000mAh battery life |
|---|---|
| 60km/h cruising | about 25 minutes |
| 90km/h top speed | 8-12 minutes |
3.Match performance: In the recently held Asian RC Short Card League, a modified KM short card broke the category record with a linear speed of 112km/h. The related video received over 2 million views on the Douyin/Bilibili platform.
4. Suggestions on purchasing and adjustment
1.Recommended configuration for novices: Keep the original 4S settings and give priority to upgrading the metal steering components (approximately ¥200) to improve control stability.
2.Advanced player plan: Phased modification: first upgrade the 6S battery pack (¥600), then replace the 150A ESC (¥800), and finally optimize the transmission system (¥400).
3.Measured data reference: The test results of the well-known RC blogger "Speed Factory" show that the KM short-circuit speed is reduced by about 3km/h for every 10° drop in ambient temperature from -5° to 35°.
Conclusion
KM short card has become a star product in the recent RC model circle due to its excellent expandability. In the original factory state, the speed of 80-90km/h can meet the needs of most players, and through system modification, it can achieve racing-level performance. It is recommended that players balance speed and control according to actual needs, and always put safety modification first.
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