Flanker Andy Harris scored two tries and number eight Delmon also went over as Hellingly maintained their title bid.
There were also scores for Ron Francis, Steve Gower, Richard Whitling, Ian Bates, Steve Doyle and Ian Goodwin with Francis converting six.
Robertsbridge finished the game with 12 men after suffering three injuries.
Ditchling pulled out of their Sussex One game with Crowborough, who are keen for the clash to be re-scheduled.
Boro's Daniel Martin said: "They've offered to forfeit the match, but that won't do our points difference any good."
Hove were delighted with the efforts of five colts players thrown into the 40-13 friendly defeat at East Grinstead.
Young Ed Gregory was among the scorers, with John Oades also grabbing a try and Matt Cuttress adding a penalty.
Lewes sent a strong side to Seaford and enjoyed an 83-7 stroll, including try doubles for Gordon Denslow, Jez King and Sammy Cole. Nine conversions took Denslow's tally to 28 points.
Converted for the new archive on 30 June 2000. Some images and formatting may have been lost in the conversion.
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