Oversight of Bungartz walk behind tractors -- FRN / K and H5 series, built from 1955 till 1960 by Bungartz in München, Germany
Bungartz FRN (4-series) with 7 hp Sachs Stamo 280 two stroke petrol engine. Two forward and one reverse, duplicated by a high-low gear.
Bungartz FRK (5-series), with 7 hp Sachs 280 engine. Three forward and one reverse, duplicated by a high-low gear.
CAB F3 made in Bergamo, Italy. Ca. 1956-1959, looks like the Bungartz FRN series 4 or 5. The owner is Stefano Winckler in Italy. Engine is an air cooled Lombardini 4-cycle petrol engine.
The Bungartz H5 (4- and 5-series) was virtually the same machine as the FRN and FRNK, but it had a smaller engine: the Sachs Stamo 200 of 5 hp. In later years, the H5 got an 8 hp Stamo 280 as well, and now the difference was that the H5 lacked the high-low gear, so had only half the amount of gears.
Latest model of Bungartz FRNK, with 8 hp Stamo 280 engine. This is one in the 7-series. The 6- and the 7-series both were equipped with full differential and wheel clutches for easier manouvring. The 6-series had different operation of the wheel clutches.
This was my Bungartz FRNK with 7 hp Berning Di7 four stroke diesel engine, built 1959.
The FRNK was also available with a Berning Dk8 four stroke petrol engine, or a Hatz E79 four stroke diesel engine, but I have no pictures of these.
Bungartz FRN / K as supplied in the USA. Engine was a Wisconsin AENL 9.2 SAE hp petrol engine.
Source: Donald A. Jones' website on rotary cultivators.
| Series of the Bungartz "Mole"-series (series 1 - 3 is Bungartz H4). |
| series |
model |
serial numbers |
years |
engine |
characteristics |
| 4 |
H4 & FRN |
H4 nr. 1301 - ? (2029)
FRN nr. 14101 - 19000 |
1955 - 1956 |
H4: Sachs Stamo 200FL.
FRN: Sachs Stamo 280FL, 6-7 hp 2-stroke petrol |
- wheel flanges with aluminium ring (1x M10 bolt in center)
- no crown nut below clutch (2 forward speeds), optional support fitted by transverse bolt
- single or double worm gear => 2F + 1R or 4F + 2R
- clutch lever pulled upward
- wide quick action coupling
- hi-low control handle with automatic locking plate
- old model handlebar adjustment
- clutch in gearbox oil |
| 5 |
H5 & FRK & FRNK |
19001 - 22100 |
1957 - 1959 |
H5: Sachs Stamo 200FL or 280FL.
FRN(K):- Sachs Stamo 280FL, 7-8 hp 2-stroke petrol
- Berning D6 (from 1958), 6 hp 4-stroke petrol
- Berning Di7 (from 1959), 7 hp 4-stroke diesel |
- wheel flanges with aluminium ring (1x M10 bolt in center)
- crown nut below clutch (3 forward speeds)
- single or double worm gear => 3F + 1R or 6F + 2R
- clutch lever pulled to rear
- till nr. 19200 lower clutch cable support with screwing thread, from nr. 19201 with bent iron strip
- hi-low control handle with automatic locking plate
- new model handlebar adjustment
- dry clutch, bolted to wheel on gearbox side |
| 6 |
H5 & FRNK |
22101 - 23100 |
1959 |
H5: Sachs Stamo 200FL or 280FL.
FRNK: - Sachs Stamo 280FL, 8 hp 2-stroke petrol
- Berning D6 or D8, 6 or 8 hp 4-stroke petrol
- Berning Di7, 7 hp 4-stroke diesel |
- wheel flanges with tin plate (4x M6 bolts)
- single worm
- crown nut below clutch
- two gear box versions:
1. With differential and steering clutches, 6F+2R
2. With only steering clutches, 3F+1R (model H5?)
- clutch lever pulled to rear
(petrol versions along the bottom, diesel versions along the top)
- hi-low control handle with spring ring lock
- dry clutch, bolted to engine flywheel
- central control handle for differential and steering clutches on top of gearbox cover |
| 7 |
H5 & FRNK |
23101 - 24250 |
1960 |
H5: Sachs Stamo 200FL or 280FL.
FRNK: - Sachs Stamo 280FL, 8 hp 2-stroke petrol
- Berning D8, 8 hp 4-stroke petrol
- Berning Di7, 7 hp 4-stroke diesel
- Hatz E75, 7 hp 4-stroke diesel |
- clutch bolted to flywheel
- clutch lever pulled to rear, along the top (only along the bottom at 4-stroke petrol versions)
- hi-low control handle with spring ring lock
- two gear box versions:
1. With differential and steering clutches, 6F+2R
2. With only steering clutches, 3F+1R (model H5?)
- hi-low by means of the differential
- central control handle for differential and steering clutches on top of handlebar stand
- air filter bolted to engine (petrol versions)
- little hood over handlebar stand to protect differential controls |
| 8 |
FK |
24251 - ? (26841) |
1960 - 1966 |
- Sachs Stamo 281, 8 hp 2-stroke petrol
- Berning D6 or D8, 6 or 8 hp 4-stroke petrol
- Ilo L252, 8 hp s-troke petrol
- Hatz E75, 6/7 hp 4-stroke diesel
- Berning Di7 or Di8, 7 or 8 hp 4-stroke diesel
- Sachs D500W, 10 hp 2-stroke diesel |
- with differential and steering clutches
- internal gearbox brake (from nr. 24941 optional band brakes on wheel flanges)
- 4F + 3A
- clutch bolted to engine flywheel |
|
