Can someone tell me what the speed record is for AMA 7 cell control line speed?
Thanks in advance.

You could always try the [link=http://records.fai.org/models/]FAI records page[/link]

See page 176 in the Jan 2006 Model Aviation. Probably on the AMA web site also. Class A, No Jr. record. Sr. is 64.35 MPH, Open is 90.42. Class B, No Jr. or Sr. record. Open is 119.63. don't know what A and B mean. Rulebook is found at the AMA site. FAI records are on the next page.