Sisu S-321
Production figures of the pre-series and first serial units

Production batch
Used Volvo chassis
Used Volvo chassis
Used Volvo chassis
Produced Sisu models
Produced Sisu models
Produced Sisu models
Notes
Production batch
LV-66
LV-71
LV-72
S-321
S-322
S-323
Notes
pre
7
1×E
1×D
1×E lorry
1×D bus
7 lorries
Production started 1931, finished 1932.
I
-
3×E; 3×D
2×E; 2×D
5 lorries
2 lorries, 2 buses
-
1 chassis used for parts. Production started 22 February 1933, finished 1933.
II
-
3×E; 3×D
1×E; 3×D
4×E; 1×D
5×D; 1 lorry, 2 buses and 2 combination buses
-
One S-322D was afterwards converted S-321E and equipped with combination bus coach. Production started 5 April 1933, finished 1933.
III
-
5×E; 1×D
4×D
5×E
5×D
-
Production started and finished 1933.
IV
-
2×E; 4×D
4×D
6
4
-
Five S-321's are built on Crichton-Vulcan frame. Production started 20 June 1933, finished 1933.
V
-
3×E; 3×D
4×D
3
7
-
Three frames from Crichton-Vulcan. Production started 4 August 1933, finished 1933.
VI
-
5×E
5×D
5×E
1×E; 4×D
-
All frames from Crichton-Vulcan. Production started and finished 1933.
VII
-
5×E
5×D
5×E
5×D
-
All frames from Crichton-Vulcan. Production started 2 March 1934, finished 1934.

Question: Which model Volvo Chassis was later converted to include a bus coach and what was the original chassis?
Answer: Sisu S-321E vehicle was S-322D with a bus coach; this was built on Volvo LV-72D chassis.