Bavarian C I

{{Redirect|C I|other uses|CI (disambiguation)}}

{{one source|date=December 2016}}

{{Infobox locomotive

| name = Bavarian C I

| bgcolor = 0081FF

| color = FFFFFF

| image = Bayerische C I Behaim Modell 1.jpg

| caption = Model of the C I "BEHAIM" in the Verkehrszentrum München

| builder = Maffei

| builddate = 1847–1849

| totalproduction = 5

| whytetype = 0-6-0

| gauge = {{track gauge|sg}}

| driverdiameter = {{convert|1,069|or|1,098|mm|ftin|frac=8|abbr=on}}

| over bufferbeams = {{convert|12,401|mm|ftin|frac=4|abbr=on}}

| axleload = {{convert|10.5|t|abbr=on}}

| emptyweight = {{convert|22|t|abbr=on}}

| serviceweight = {{convert|24.9|t|abbr=on}}

| weightondrivers = {{convert|24.9|t|abbr=on}}

| tendertype = 2 T 4.2

| fuelcap = 3 m³ coal

| watercap = {{convert|4.22|m3|impgal usgal|abbr=on}}

| heatingtubes = 160 or 119

| heatingtubelength= {{convert|3860|or|3756|mm|ftin|frac=4|abbr=on}}

| boilerpressure = {{convert|5.6|or|10|kgf/cm2|kPa lbf/in2|abbr=on}}

| fireboxarea = {{convert|0.39|or|0.91|m2|abbr=on}}

| evaporativearea = {{convert|72|or|56.7|m2|abbr=on}}

| cylindercount = 2

| cylindersize = {{convert|406|mm|in|frac=16|abbr=on}}

| pistonstroke = {{convert|609|mm|in|frac=16|abbr=on}}

| maxspeed = {{convert|40|km/h|mph|0|abbr=on}}

| retiredate = 1885–1895

| notes = Where 2 sets of figures are shown, the second applies to the engine with its replacement boiler

}}

Bavarian C Is were steam locomotives with the Royal Bavarian State Railways (Königlich Bayerische Staatsbahn).

They were the first six-coupled engines in Bavaria and were developed specially for the route between Neuenmarkt, Wirsberg and Marktschorgast. This route had inclines up to 1:40. The loco had an inside frame, a boiler barrel without a steam dome, an inside Stephenson valve gear, single-sided, suspended Taschenkulissen and a rectangular ballast tank on the boiler barrel to increase the adhesion effect. A total of five were built by Maffei. They were named: SCHARRER, BEHAIM, LEIBNIZ, SAALE and SCHNEEBERG. There is a finely detailed 1:10 scale model of BEHAIM in the Nuremberg Transport Museum.

They were equipped with Bavarian tenders of the class 2 T 4.2 type.