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Description
XLPower Nimbus 550 Nitro Helicopter Kit w/o BladesBlades, Engine, muffler and electrnics are not included XL Powers latest endeavor is to bring a high performance yet cost effective heli fit for absolute beginners and carry them through learning even the most advanced flying. XLs Nimbus 550 Nitro is the perfect blend of electric type performance with an on the go fuel and fly nitro airframe, perfect for learning new maneuvers and for throwing in the car for at lunch or after work flights. 550 size
Blades, Engine, muffler and electrnics are not included
XL Power’s latest endeavor is to bring a high performance yet cost effective heli fit for absolute beginners and carry them through learning even the most advanced flying. XL’s Nimbus 550 Nitro is the perfect blend of electric type performance with an on the go fuel and fly nitro airframe, perfect for learning new maneuvers and for throwing in the car for at lunch or after work flights. 550 size can be flown in smaller areas and is super fun at fun fly events with a much more economical fuel consumption, cost effective to repair, and far less intimidation factor of flying aggressive or learning something new on a 700.
Nimbus 550 Nitro comes suited for the most common full size servo configuration, with option parts if you prefer to use mini servos, a pre-painted highly visible canopy, and bolt together easy building for getting you from the box to the air in no time. This airframe is built for flyers who want to fly as much as possible with the least amount of maintenance.
Features
- It features a proven tapered
clutch system adopted from the Nitro 700, making it the smoothest and easiest-to- align clutch stack available on the market. - With a 7.7 gear ratio, it
is perfectly matched to achieve a good rotor RPM while providing enough torque for demanding maneuvers with 550-580mm blades. Optional parts are available to stretch it to a 650-size with an 8.5 gear ratio. Engine maintenance is made easy with the ability to remove the engine from the bottom without disturbing other assemblies, taking only a few minutes. - The main gear directly
drives the head and has been designed to efficiently transmit rotor torque, producing peak power through extreme rigidity. - The core of the airframe
consists of a single-piece 7075 aluminum bearing block assembly and servo mount, which provides rigidity to the frame and drivetrain. - The cyclic servos are
arranged in a 120-degree layout for optimal control geometry. - The main gear hub utilizes
two one-way bearings, ensuring reliability even under extreme power combinations. Additionally, the large diameter tail boom eliminates the need for boom supports.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
Awesome
Color: Orange
Awesome Toy . My Jack is crazy over it. She usually get bored with others, but this toy still has her attention after a couple of weeks Runs a long time on a short charge. 👍🏻
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Reviewed in the United States on May 30, 2026
★★★★★ 2
Not the Fetch-Fest I Hoped For
Color: Orange
I had high hopes for the PetDroid Interactive Dog Ball, especially with the newly upgraded features and promises of durable, motion-activated fun. Unfortunately, it didn’t quite live up to expectations for my furry friend. Here’s why I’m giving it 2 stars.
Promising Features, Lackluster Results
The idea behind this toy is fantastic: a durable, motion-activated ball that would entertain my dog without much effort on my part. The ball is supposed to roll around on its own, keeping my dog engaged and active. However, in practice, it just didn’t capture my dog’s interest.
Durability
I will give credit where it’s due: the ball is well-made and seems durable. It can withstand some rough handling, which is great for more aggressive chewers. Unfortunately, durability doesn’t mean much if your dog won’t play with it in the first place.
Motion Activation
The motion activation feature is hit or miss. While the ball does move around as advertised, it didn’t seem to move in a way that intrigued my dog. He gave it a sniff, watched it for a minute, and then walked away, unimpressed. I tried multiple times to get him interested, but he simply wasn’t having it.
Lack of Engagement
The biggest issue is that the ball just didn’t engage my dog at all. It might be more suitable for a different personality type or breed, but for my pooch, it was a total flop. He’s usually quite playful and curious, so I was surprised by his lack of interest.
Final Thoughts
Overall, the PetDroid Interactive Dog Ball might work for some dogs, but it was a miss for mine. If your dog is easily entertained by automated toys, it might be worth a try. However, based on my experience, I can’t wholeheartedly recommend it.
Pros:
Durable construction
Motion-activated as advertised
Cons:
Did not engage my dog
Motion activation wasn’t intriguing enough
Might be more suitable for specific dog types or personalities
If you decide to give it a shot, just be prepared for the possibility that your dog might not find it as entertaining as you hope. For us, it’s back to the drawing board for a more engaging toy.
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Reviewed in the United States on June 14, 2024
★★★★★ 4
Pup Loves It, Some Other Notes
Color: Orange
We've had this for about six months and my 75 lb, 14-month-old German Shepherd pup LOVES IT. Her favorite is "Crazy Bouncing Mode." In fact, she doesn't care much for the normal mode. She chews it a lot - even drops it in her water bowl at times - and it's still going strong.
This is a great purchase. It's nice hands-off entertainment.
Do know that it is heavy compared to a normal ball - if your pup likes dropping it on the ground like mine does, it will land with a hard "thud," even with the included sleeve. Hopefully you don't have downstairs neighbors.
Also know that the cover that goes over the charging port is removable and your dog may choke on it if they chew it in just the right manner. Definitely only let the pup play with it while supervised.
All in all, great toy.
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Reviewed in the United States on February 11, 2026
★★★★★ 5
Bouncy, not hard, and good value.
Style: Fetch Balls (Pack of 10), Size: 2.5 inch
Great balls for the ball launcher and not rockhard like some of the solid rubber balls. These have great bounce, and because of the two holes, they make a fun whistling noise as they fly through the air. My dogs love them and they are a good value.
By the way, if you throw them too hard, they will go through chain-link and no climb fence because they squish a bit!
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Reviewed in the United States on February 16, 2026
★★★★★ 5
Excellent dog balls — safe design and very durable
Style: Fetch Balls (Pack of 3), Size: 2.5 inch
These fetch balls from Amazon Basics are fantastic, and my dog absolutely loves them. One of the biggest reasons I prefer these over other brands is the hole that runs through the center of the ball. This is a very important safety feature: if a dog were to accidentally get the ball stuck in the back of the throat, the hole allows air to pass through. That small detail could literally make a life-saving difference.
Aside from the safety benefit, they bounce well, are easy to clean, and hold up to a lot of playtime. They’re firm but not rock-hard, and my dog goes crazy for them. Great value, great quality, and a thoughtful design.
Highly recommended for dog owners who want a safer alternative to standard solid rubber balls.
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Reviewed in the United States on December 1, 2025