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Description
Double Cylinder Electric Flat-twin Solenoid Engine Electromagnetic MotorDouble Cylinder Electric Flat twin Solenoid Engine Electromagnetic Motor Features:. Features: The flat double cylinder electromagnetic engine model boasts an exquisite, mini but domineering appearance, high restoration and strong magnetic power, which is a professional model toy that can show your personality clearly. Supports brushless ESC and forward&reverse rotation.. Sophisticated Manufacture: Made of high toughness alloy material, CNC process and
Double Cylinder Electric Flat-twin Solenoid Engine Electromagnetic MotorFeatures:
.Features: The flat double-cylinder electromagnetic engine model boasts an exquisite, mini but domineering appearance, high restoration and strong magnetic power, which is a professional model toy that can show your personality clearly. Supports brushless ESC and forward&reverse rotation.
.Sophisticated Manufacture: Made of high-toughness alloy material, CNC process and metal drawing process, the elaborately-polished model with originality features rich-in-luster, delicate and cool surface, along with the mechanical sense of metal for long-term use and storage, suitable for an ideal desktop display.
.Operating Principle: Electric energy is converted into magnetic energy, and then the magnetic energy is converted into mechanical energy to do work. According to the principle of magnetic repulsion and attraction of opposites, a small amount of electric energy is scientifically used to generate strong magnetic energy. Through the electromagnets of each cylinder repel and attract each other within the set range, the strong repulsive force and attracting force pressure the lower magnet into movement, thereby pushing the connecting rod and driving the crankshaft to rotate to complete the engine work process.
.Usages & Values: Suitable for the modification of 1/10 model cars, the product with lots of fun can be operated and used in science and education experiment or teaching, which is helpful to understand its structure and principle, improve the interest in learning scientific knowledge, also available as a personal collection and tabletop ornament.
.Notes: The customized product was taken in kind without modification to reflect the original taste of the metal. You can paint it any color you like, or optimize the machine structure if you have the superior hands-on ability. More room for expansion and upgrades are waiting for you to DIY and operate the engine in line with your ideas.
Specifications:
.Material: Metal
.Piston Diameter: 8mm
.Piston Stroke: 8mm
.Voltage: 6V-12V (7.4V 2S Li battery is recommended)
.Current: Over 1A
.Product Dimensions: 8 x 5.5 x 3.8cm
.Product Weight: 62g
.Package Dimensions: 15 x 10 x 8cm
.Package Weight: 90g
.Packing: Carton Box
.Ages: 14+
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
4.8 ★★★★★
Based on 1950 reviews
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Product Reviews
★★★★★ 5
Long term durability and still my dogs fav toy!
We’ve had this ball for 13 months now. It’s still my dogs #1 favorite toy. I have dogs like that to chew and they have tried but this thing is still fully intact. Definitely got my moneys worth and my dogs love it!!
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Reviewed in the United States on June 24, 2024
★★★★★ 5
Dog loves them
I have these balls in every size they come in. My dog loves them and they are the only thing that he can’t destroy. I also have put a squeaker from a destroyed toy inside of one (it was a difficult thing to do) and made my own indestructible squeaky ball as well as putting a small sized ball inside a medium sized ball to make something that he plays with on his own for hours.
Even if you just use it as a ball without any of the modifications I have done I highly recommend this product. You can play with your dog indoors and not be too concerned about damaging anything. It also is great for playing in the snow since it doesn’t sink as far as other balls.
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Reviewed in the United States on January 5, 2024
★★★★★ 5
Great for small dogs
This ball lasted 5 minutes for my bully. That's my fault for not reading that it was small. I'm going to look for the largest size in hopes to get a few more minutes worth of chomps. My dog loved it.
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Reviewed in the United States on April 18, 2023
★★★★★ 3
Too easy to chew apart even for easy going dog
I bought this to hold treats for my dogs to work at getting the treats out. I thought the dogs would roll the ball and toss the ball. No. The lab took one look at the ball and immediately chewed apart one section and let the treats out. So the ball was then useless.
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Reviewed in the United States on August 4, 2025
★★★★★ 5
Dog is in love with this Toy!
Color: Assorted, Size: Medium
This is a super great dog toy & one of the best we have purchased for miss "destroy the toy" dog! I have an Australian Cattle Dog who has a pretty big chomp reflex. She destroys most all of her ball toys in just a few minutes because she chomps so hard. So far, this is the only "open type" of dog ball toy she has not ruined quickly. It's actually lasted over a year so far! It is showing some wear & tear & a couple ares have almost been chomped through, but that would be expected with the way she chomps on it. She absolutely adores this toy & it is her total favorite! It has been well worth the money & then some for her. I've already bought a couple of "spares" but she is still playing with the original one I bought. Please note: I never, ever leave it alone with her! I use it only to throw or kick & for her to chase & retrieve. I try not to let her just chew & chomp on it, but that is what she'd really like to do. We play with it all year long, even in the snow. It's fun in winter because it does not sink & get lost in deep snow as quickly as a tennis ball sized toy would. It fills up a bit with snow, but that seems to make it even more fun for my dog. I highly recommend this toy. I just wish JW would offer it in some other brighter colors besides the blue.
01/06/2016 Update:
My dog still is playing with this very same Hol-ee Roller X Extreme! I'd bought her a couple of spares but this 1st one is still holding up under her chompers! It's worn looking but has not torn or broke yet. I do not let her just sit and chomp on it though. It used as a retrieving and chasing toy, but she does get a few goods chomps in each time she gets it. We play with this toy basically every single day, so I'd say this is a very durable dog toy and the best one I have bought ! I highly recommend it.
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Reviewed in the United States on January 19, 2015
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