| De Jansmolen, Goëngahuizen | |
| Name Of Mill: | De Jansmolen De Modden |
| Location Of Mill: | Nabij Peansterdyk 10, 8497 NL Goëngahuizen |
| Coordinates: | 53.0828°N 5.8869°W |
| Operator: | Stichting De Fryske Mole |
| Built: | 19th century |
| Purpose: | Drainage mill |
| Type: | Hollow Post Mill |
| Roundhouse Storeys: | Single storey roundhouse |
| Sail Number: | Four sails |
| Sail Type: | Common sails |
| Windshaft: | Cast iron |
| Winding: | Tailpole and winch |
| Pump Type: | Archimedes' screw |
De Jansmolen or De Modden is a Hollow Post mill in Goëngahuizen, Friesland, Netherlands which has been restored as a landscape feature. The mill is listed as a Rijksmonument, number 34000.[1]
The date that De Jansmolen was built is unknown. The mill was marked on a map of Smallingerland dated 1848. The mill was at work until 1952. During the summer it drained an area of 200pondemaat and during the winter it drained an area of 60pondemaat.[2] The mill was restored in 1954 and 1967. On 9 November 1978, the mill was sold to Stichting De Fryske Mole (English: Frisian Mills Foundation). The mill was restored again in 1990.[2]
De Jansmolen is what the Dutch describe as an spinnenkop. It is a hollow post mill on a single-storey square roundhouse. The mill is winded by tailpole and winch. The roundhouse is clad in pantiles and mill body is covered in vertical boards, while the roof of the mill is boarded vertically and covered in felt. The sails are Common sails. They have a span of 14m (46feet). The sails are carried on a cast-iron windshaft.[2] Apart from the brake wheel, the mill is devoid of machinery.[3]
De Jansmolen is open by appointment.[4]