Davies, 24, recently parted company with long-time mentor Anthony Hughes, who had coached him since he was 15.
“Ryan believes he can takes me to levels that I never imagined and I can’t wait to see it unfold,” Davies told BBC Sport.
“When it comes to the Rio Paralympics I know I have to improve and throw further.”
The Welshman, who was born with limited function in his right leg, took up athletics aged 15 after starting out as a swimmer and has enjoyed international success in both the discus and shot events, winning gold in the discus and bronze in the shot at London 2012.
But although he won European titles this year in both of his events and broke the discus world record, the disappointment of missing out on a gold medal at the Commonwealth Games was a low point.
“People will probably say I am harsh on myself but I don’t think I have had a good year,” said Davies, who was beaten in the combined F42/44 discus event in Glasgow by GB team-mate Dan Greaves, who was representing England.
“Coming out of winter training I was in good shape and thought I would progress a lot more than I did, but there were a lot of technical things frustrating me over the season.
“Glasgow knocked me for six. It was an event close to my heart and representing Wales and being team captain I wanted to lead by example and win gold but it was a tough competition and it was very hard to then pick myself up for the IPC European Championships in Wales.
“I needed to end on a high for my own confidence knowing I was still number one and the best at what I do and it was good to end on a win there.”