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Description
Mini V4 Brass Steam Engine Model Reverse Gearbox (without Boiler)Mini V4 Steam Engine Model with Reverse Gearbox (without Boiler) Features: . Exquisite Appearance: The model of the steam engine is small and novel. It can be placed in the palm of your hand like a treasure. It is exquisite and mini. . Steam Engine Structure: Piston slide valve. . Reversing Structure: Forward and reverse two gears, automobile hand wave structure, often meshing fork gear. Miniature stainless steel crankshaft, with bearings at both
Mini V4-Steam Engine Model with Reverse Gearbox (without Boiler)Features:
.Exquisite Appearance: The model of the steam engine is small and novel. It can be placed in the palm of your hand like a treasure. It is exquisite and mini.
.Steam Engine Structure: Piston slide valve.
.Reversing Structure: Forward and reverse two gears, automobile hand wave structure, often meshing fork gear. Miniature stainless steel crankshaft, with bearings at both ends, gearbox gears also fixed with bearings, brass gear transmission, shift fork clutch
.Instructions for Use: This steam engine model is small in size, low in power consumption, and high in thermal / dynamic conversion efficiency. It is an efficient power option in the case of small model space and low boiler (50 * 100mm diameter) power.
.Please connect the boiler by yourself (boiler is not included), add steam cylinder oil to lubricate all parts, connect φ4mm copper pipe, pressure between 2-4, open the steam valve
.Simple and Convenient Maintenance: Fully consider the player's use and maintenance issues, designed as a detachable structure, easy maintenance and replacement of parts
.Significance and Value: By operating the steam engine model, you can learn the operating principle of steam more intuitively. At the same time, this model is a collectible with collectible meaning. Can also be used for steam ship models, car models, small generators, etc.
.For Age: 14 years and older
Specifications:
.Color: As Shown
.Material: Metal
.Weight: 320g
.Dimensions: 115 x 95 x 80mm
.Cylinders: 4 Cylinders
.Bore x Stroke: 8mm x 8mm
.Valve Gears: Walschaerts
.Pressure: 3kg/cm²
.Temperature:50~120℃
.Lubricator: Screw-cap-type
.Axle: φ3mm
.Gearratio: 1:1(36:36)
.Base Fixing Hole: Ø315 x 25mm
.Product Dimensions: 12 x 8.5 x 10cm
.Product Weight: 320g
.Package Dimensions: 15 x 12 x 12cm
.Package Weight: 400g
.Packing: Box
Package Content:
.1Set x Mini V4-Steam Engine
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
4.6 ★★★★★
Based on 2220 reviews
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Product Reviews
★★★★★ 3
Excellent Time Keeper // Terrible Wristband !
The watch itself is fantastic. When I first got it, and set it up, I set it to the time on my computer, which is as accurate as you can get. In the beginning I checked the time accuracy daily. After a few weeks my time checks changed to once, or twice a week. I never had to change the watch's time. The seconds would vary a little, in comparison to the computer clock. But, it never got more than 30 seconds either side of the computer clock. However, the watchband is a big time NO-GO! The buckle, where you connect it on your wrist, can be frustrating most of the time when you are trying to put it on. Once you've got it on, the strap that goes beyond the buckle is held down by a sliding keeper, that slides in and out depending on what you're doing. Terrible design! I wanted to buy a "Twist-a-Flex" wristband, but couldn't find one that matched the unusual design where the straps attach to the watch body. I bought the watch 4 months ago. Today, one of the 4 pins, that connect the straps to the watch body, fell out somewhere, making the watch impossible to wear. Excellent price. Excellent timepiece. Worst design for a wristband that I've ever seen.
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Reviewed in the United States on September 22, 2020
★★★★★ 5
Excellent for price, you won't be sorry
If you are looking for a watch with a lot of features that doesn't cost a lot, this is your watch. I tear up watches fairly easily in my line of work and after I killed my Seiko I decided I would hunt out a cheap watch. There aren't a lot of watches at this price range that include a stopwatch, date (with day of the week), AND has a light that is bright enough to actually read the time in the dark. This one does.
The watch not dainty; it is big and bulky, bigger than I thought it would be, but not unwieldy and not super heavy. Expect it to be big. This also helps with readability (My son can read the time on this watch from the other side of the couch).
The band feels rugged, made of a pliable and soft- feeling rubber and has a two- pronged belt- like closure (think 'biker belt') that keeps it secure on the wrist. Additionally, the holes for the band goes the entire length of the band so it is adjustable for really small wrists up to about 9.25" circumference.
Others have complained about how easily the face scratches, but I suspect they've failed to remove the protective coating on the lens. It's a protective film that you have to get your fingernail under to pull off. Once that's off, the lens is crystal clear and fairly tough. I've had mine for a week now and used it under some fairly harsh conditions and the lens is still clear and scratch-free.
My only complaint seems petty for a watch at this price point, but the strap-end hold down 'belt'--- the loop that holds down the extra length of the strap when it's buckled--- moves easily and so in use it will occasionally come off and you have to retuck the end back into it. But seriously, this is really minor.
If you need an inexpensive digital that's easy to read in both daylight and darkness, ya don't mind a large and bulky, rugged- looking watch, and don't want to spend an arm and a leg, get this one. You likely won't be sorry.
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Reviewed in the United States on February 4, 2023
★★★★★ 5
Great wallet
Color: Brown (Bifold)
Great wallet, my son loved it!!
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Reviewed in the United States on April 17, 2026
★★★★★ 5
Black wallet 💰
Color: Black (Trifold)
I love it!!
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Reviewed in the United States on April 17, 2026
★★★★★ 5
Great product
Color: Brown (Trifold)
Great wallet
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Reviewed in the United States on March 12, 2026
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