Thermoacoustic Stirling engine Rufus

This crane is a replica based on a real harbor crane from England. The model of this crane is located on the edge of a canal in Driffield, East Yorkshire, Great Britain. This crane used to be used to lift goods from ships and even entire boats out of the water. The original and model have a gear with which the chain could be moved either in rapid motion or slowly with a lot of force. The crane has a brake so that the chain spindle does not unroll itself when a load is hanging on the hook. The brake has an integrated freewheel so that the braking force only works in one direction of rotation. When you crank a load up you don't have to overcome the braking force. The crane is rotated via a second spindle with a worm wheel. All milled parts in the model are made of brass. The intermediate columns and the rotating columns are supplied as free-cutting steel. The brake drum and idler pulley are made of gray cast iron. A round rod made of oak is included for the boom. The model is fully functional when assembled and can lift and hold loads of up to 250 g. If the base of the crane were to be enlarged even larger loads would not be a problem. The scale of the harbor crane is approximately 1:20.  All milled parts are included in the kit ready-made. All turned parts are included in the delivery as raw material. Of course, as with all other Bengs model building material kits, you will also receive all the necessary screws, nuts and a suitable chain. The base made of 4 mm sheet steel is included as a laser-cut sheet metal part. To the construction  A small lathe and a column drill are required, as well as a gas burner for soft soldering. The following should also be available: M2, M3, M4 taps, M3 dies, 4H7, 6H7, 8H7 reamers, files and a drill set. Otherwise, hand tools, which should be in every “technical model making workshop”, are necessary.   Here you will find a comprehensive construction report with lots of pictures for the Hercules harbor crane material kit Scope of delivery harbor crane material kit Finished milled parts Raw material for the turned parts All required screws, nuts and chain Construction plan harbor crane drawings (16 sheets) and construction instructions (4 sheets) Laser part base Dimensions of harbor crane material kit Height: 260mm Length overall: 350mm Max. Lifting weight with standard base: 250g Weight: 1.1kg  

Grinding ball/sanding ball made of abrasive fleece with a diameter of 75mm. The abrasive material is firmly mounted on a 6mm mandrel. You can use the grinding ball in a drill press, die grinder, drill, cordless drill. The maximum speed must not exceed 10,000 revolutions/min. The sanding ball is ideal for derusting, satin finishing and removing paint from hard-to-reach areas such as internal and external curves. It is suitable for wood, steel, non-ferrous metals, plastics, and much more. applicable. Professional quality with layered fleece elements. The following grinding ball variants are available:  Fleece grinding ball ø 75mm grain 80 coarse (brown)  Fleece grinding ball ø 75mm grain 120 medium (green)  Fleece grinding ball ø 75mm grain 600 extra fine (gray)

These NiMH batteries can be charged with almost any charger for NiMH batteries. Depending on charging and usage behavior, these can be recharged up to 1,000 times. These batteries are specifically for devices with above-average power consumption. We use these batteries to operate the glow ignition for our internal combustion engines. With 3500 mA, this battery has enough power to keep the glow plug operating for a long time. We use this battery to operate the glow ignition for our combustion engine Little Karl.Rated voltage: 1.2 V Rated capacity: 3500 mAh Charging current max.: 1750 mA

This brass Ms58 hexagonal material is very easy to machine and is ideal for turning, milling, drilling and tapping. The material is suitable for self-assembly of screws, model building nuts and other components for technical modeling. You can order different key sizes in our shop, or you can order a set of different diameters. Features of brass Ms58 hexagon  Hexagonal material brass with different key ranges Quality: Ms 58 (drilling and turning quality) Strength F45-50 Length: 300mm We supply the brass Ms58 hexagon in 300mm sections. Savings set Hexagon brass Ms 58 / You save 20% The brass hexagonal material savings set includes 300mm per 1 bar 4mm 5mm 6mm 8mm 10mm 12mm