Featured Locomotive for October 2012

The Class B and C Climax

Last month we talked about the Class A Climax and its three types- so this month we can close off this session with the Class B and C Climax. These classes were similar in design but varied greatly in weight- number of trucks and pulling power- as the engine altered in weight so the rails went from pine logs to saw timber to iron rails to steel rails.

image of a train

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The B and C Class are radically different to the A in that the two cylinder marine engine was done away with and replaced by a single cylinder on either side of the smoke box- angled down approx. 40 degrees where through a gear it drove the cardan shaft to the bogies. B and C Classes appear in 1893 with steel cabs replacing the wooden canopy in 1912.

The B Class weight from 18 tons to 60 tons
The C Class weight from 70 tons to 100 tons- 3 trucks. We do not know of any examples in Australia.
The Tractive effort of the 'C' was 44-000lbs compared to the largest 'A' of 19-360lbs.

The Climax loco reached its supremacy in the US in 1930 just after the company sold out to the General Parts Company of Detroit Michigan after just on 50 years. For nearly 30 years the Climax was most popular with logging companies in the North Coast Great Dividing Range- later in the Victorian Gippsland. There were 7 'A's- 4 'B's and no 'C's. The date of purchases varied from 1903 to 1928. As it could go anywhere, use any rail and traverse almost any terrain. The death of the Climax was caused by huge logging tractors and trucks. Our model is of a Climax B Class of 25 tons (two trucks).

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