jerryj39

My Feedback: (30)

I have aquired a Challenger 720 receiver model HP-7RM72F. It says Aristo-craft on the sticker which I think is now Hitec. It says it is FM dual conversion narrow band. Channel 20. I have a Futuba and a Airtronics radio. Is this receiver compatible with either? If not anyone want to swap or buy?

heliguy

My Feedback: (3)

The Challenger 720 is Futaba compatible. Hi-Tec Xtals work fine in it.

Is it the brown case or the black case model? The brown case model had some problems. Early units used Molex plugs (white funny looking) later units used slimline (JR/Hi-tec compatable).

For what it's worth - Al
http://www.rchelibase.com

jerryj39

My Feedback: (30)

It is the black case model. It says FM Dual conversion narrow band. It has 7 channels plus the battery socket. It has the new style plugs.

heliguy

My Feedback: (3)

Jerry, I had a few of those myself and had no problems with them. They were made by what is Hi-Tec today.

Good luck - Al

Chris Betz

i have one of these receivers and one made for an Expert 7 channel I bought these radios new in 1988. i am planning on sending these in to Kraft midwest to have them converted to the frequency of my new Futaba. I was also wonderring if any body knows which servo arms will work with these servos I no that futaba will not work.

Thanks Chris

heliguy

My Feedback: (3)

Chris, If you have the Aristocraft 402, or the 402x, servo's then they take Hi-Tec arms. I am not sure about the World version (Expert) but I think they would be the same.

For what it's worth - Al
http://www.rchelibase.com

Chris Betz

Thanks for the information I have also found that I can order ball bearing from Boca Bearing for the Futaba S148 and replace the oilite bearings that come standard with these servos.

Thanks again Chris

captinjohn

jerryj39: What is the model numbers on the servos? I am trying to find gears for a Aristo servo. Thanks john