R-985 Blower Ratios
Posted: Tue Nov 08, 2016 8:53 pm
Does anyone know if there were different blower ratios for R-985s for different aircraft installations or where all R-985 blowers geared for the same ratio?
According to the type certificate data sheet, there were two ratios used.
7.1:1 on the R-985-5 (350 HP)
10:1 on other models (450 HP)
http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/55f5d74fc76375d58525676a00677446/$FILE/ATTFPUN1/5E-1.pdf