ASP, Magnum, Super Custom (SC), and Sanye are all made by Sanye in China. Magnums are readily available in the US. The SC's are rather common in England and some of their protectorates. www.justengines.unseen.org in GB sells the ASP line and do a lot of business. They are easy to deal with where ever you are.

The Sanye type engines have been around for a while. Years ago Indy R/C sold the ASP's and then Horizon Hobby sold them until the last couple years. It appears that the Evolution engines are made by them.

The very first Magnum engines were made by Thunder Tiger. These engines will have TT typee names like GP or PRO. But Magnums have been the same as ASP's for some years now.

There is a newer series of ASP and Magnum engines (The XLS series) that is really setting the world on fire. They look and run like the OS FX series engines except the liners don't peel. There's a XLS 52 ABC that's in the Magnum line up has a round head but otherwise looks like the OS 50 SX ringed engine . Most of the 2 cycle engines are genuine ABC.

The four cycle engines look like the OS 4 cycles. They newer ones campare favorably with the Surpass II series. There is a difference around the area of the OS 70 Surpass II because the Magnum/ASP is in the 52 frame and is a 61. It runs about the same as a Saito 56 more or less.

The older series of 2 cycle engines in the 91, 108, sizes, though very reliable, were rather heavy and in a 120 frame. The new XLS91 ABC runs extremely well and so far seems to be free of the bubble problem found in the OS 91 FX. Right now they do not have a 61 displacement engine in the new series. They may never? The 91 is in a 61 frame.

Enjoy,

Jim