After hearing evidence, a jury found he committed the acts as alleged.
Now Sykes, of Sprinkwood Grove, Weston Coyney, has been handed an absolute discharge as the judge had limited sentencing options available to him.
The court heard the two victims, who are now adults, were sexually abused by the defendant when they were children.
In a statement read to the court, one said: “He has carried on with his lies and is hiding behind a so-called illness. He is a calculating, manipulative, violent sexual predator. He should be locked away and caged like the animal he is.”
Reading her own statement, the second victim added: “The entire process has been physically and mentally exhausting and unbearable.
“I have found it so hard to trust people. This has impacted heavily on me. My quality of life has deteriorated. I am not as outgoing. I have had hours of counselling and meetings with the mental health team. I have struggled with depression and anxiety. I take sleeping tablets at night and have had a lot of time off work.”
Sykes was placed on the sex offenders’ register for the next five years and was made the subject of a Sexual Offences Prevention Order, which prevents the pensioner having any unsupervised contact with any child aged under 16 for the rest of his life.
Judge David Fletcher told Sykes: “The court has been engaged in hearing the case for the last week and a day. During the course of the case there has been some of the most heart-rending evidence I have ever had to experience as a judge.
“You lied in the course of your discussions with the police. You should be thoroughly, thoroughly ashamed of your behaviour. It is truly appalling.
“This has been a difficult case for all of us involved in it and your two victims have to carry it with them for the rest of their lives.
“You would have been going to prison today for a considerable number of years if these had been specific criminal proceedings. I can do no more than apologise for the inadequacies of the system.”