Editing 2-10-10-2 (section)

== Virginian Railway class AE ==
{{One source|section|date=August 2024|find=Virginian Railway class AE}}
{{Infobox locomotive
| name = Virginian Class AE
| powertype = Steam
| builder = [[American Locomotive Company]]
| ordernumber = 1227
| image = Virginian Railway AE.jpg
| caption = Virginian Class AE
| hatnote = Reference:<ref name=bruce/>
| builddate = 1918
| totalproduction = 10
| whytetype = 2-10-10-2
| gauge = {{Track gauge|ussg}}
| driverdiameter = {{convert|56|in|mm|0|abbr=on}}
| wheelbase = {{convert|64.25|ft|m|abbr=on}}
| weightondrivers = {{convert|617000|lb|kg t|0|abbr=on}}
| locoweight = {{convert|684000|lb|kg t|0|abbr=on}}
| tenderweight = {{convert|214300|lb|kg t|0|abbr=on}}
| locotenderweight = {{convert|898300|lb|kg t|0|abbr=on}}
| fueltype = [[Coal]]
| watercap = {{convert|13000|USgal|impgal L|0|abbr=on}}
| tendercap = {{convert|12|ST|LT t|1}}
| boiler = {{convert|118.5|in|mm|0|abbr=on}}
| boilerpressure = {{convert|215|psi|MPa|0|abbr=on}}
| firearea = {{convert|108.7|sqft|m2|0|abbr=on}}
| totalsurface = {{convert|8528|sqft|m2|0|abbr=on}}
| tubearea = {{convert|5580|sqft|m2|0|abbr=on}}
| archarea = {{convert|438|sqft|m2|0|abbr=on}}
| fluearea = {{convert|2510|sqft|m2|0|abbr=on}}
| superheaterarea = {{convert|2120|sqft|m2|0|abbr=on}}
| cylindercount = Four, compound (LP front, HP rear)
| lpcylindersize = {{convert|48|x|32|in|mm|0|abbr=on}}
| valvegear = [[Walschaerts valve gear|Walschaerts]]
| hpcylindersize = {{convert|30|x|32|in|mm|0|abbr=on}}
| tractiveeffort = Compound: {{convert|147200|lbf|kN|0|abbr=on}}<br />Simple: {{convert|176600|lbf|kN|0|abbr=on}}
| factorofadhesion = 4.19
| locobrakes = [[Railway air brake|Air]]
| trainbrakes = Air
| numinclass = 10
| fleetnumbers = 800-809
| operator = Virginian
| disposition = All scrapped from 1943-1953
| width = {{convert|12.0|ft|m|3|abbr=on}}
| height = {{convert|16.625|ft|m|3|abbr=on}}
}}

These ten locomotives were built in 1918 by [[American Locomotive Company|ALCO]] for the [[Virginian Railway]]. With a width of {{convert|12|ft|mm|0}}, they were delivered without their cabs and front low-pressure cylinders and were assembled after delivery. The {{convert|48|in|mm|0|adj=on}} low-pressure cylinders (on {{convert|90|in|mm|0|adj=on|disp=or}} centers) were the largest on any U.S. locomotive; these had to be inclined a few degrees to provide clearance.<ref name="bruce" /> The boiler was also the widest of any locomotive; Railway Mechanical Engineer says "the outside diameter of the largest course is {{convert|112+7/8|in|mm|0}}." but the drawing shows {{convert|118+1/2|in|mm|0}} diameter at the rear tube sheet. Their accompanying fuel [[tender (rail)|tenders]] were shorter than usual so the locomotive would fit on the Virginian's [[turntable (railroad)|turntables]].

This class were compound [[Mallet locomotive]]s. The rear, high-pressure cylinders exhausted their steam into the huge front cylinders.  They could also be operated in simple mode for starting; reduced-pressure steam could be sent straight from the boiler to the front cylinders at low speed, for maximum tractive effort.

The calculated tractive effort was {{convert|147,200|lb|kg|abbr=on}} in compound, or {{convert|176,600|lb|kg|abbr=on}} in simple for the Virginian locomotives.<ref>{{cite book |last1=Lewis |first1=Lloyd D. |title=Virginian Railway Locomotives |date=1993 |publisher=Walsworth Publishing Co. |location=[[Marceline, Missouri]] |isbn=1-883089-05-0 |page=32 |edition=1}}</ref>

The class remained in service until the 1940s. No examples have been preserved.<ref name="bruce" />