The O.S. MAX-61 VF is a high performance engine that has been developed expressly for FAI type R/C contest models. It em-ploys schnuerle scavenging and a rear exhaust port to facilitate the installation of a tuned silencer system, especially where …

Jun 16, 2005 · For what it's worth, my VF .61 with a Macs .60 pipe spins a 12x6 APC at 13,300 and an APC 11x7 at 14,200. Based on this, I'd run either a 12x6 or an 11x8 depending on the airframe application. The O.S. Max .61 V-series of engines were basically rear-exhaust versions of the FSR series.

Mar 6, 2003 · OS Max 61V With Propeller Reduction Gear GS R1 MIB. No.7F Carburettor, bore 24MM, Stroke 22MM CC 9.95 cc, weight 810 grams. Reduction ratio /1.391. Engine is new in box. First VR..

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Sep 26, 2019 · I don’t believe there is such a thing as a V engine other than the fact that the crankcase used for both is the same and just marked as OS MAX 61V. Oh, the VR is slightly more powerful as is often the case with RI engines (e.g., OPS, Rossi, etc.)

Mar 27, 2021 · Nice clean OS MAX 61V RE with header Incredible compression, spins freely. Has been oiled up and stored for years. However, due to the age and vintage, this motor is sold as is. I know its not the correct box, I must have mixed that up a while ago.

Dec 6, 2024 · OS Max 61v Rc Engine . breadcrumb. Toys & Hobbies; Radio Control & Control Line; RC Model Vehicle Parts & Accs

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O.S. MAX-61VF. INSTRUCTIONS FOR O.S. MAX 61 VF ENGINE. The O.S. MAX-61 VF is a high performance engine that has been developed expressly for FAI type R/C contest models.

Jun 16, 2005 · The O.S. Max .61 V-series of engines were basically rear-exhaust versions of the FSR series. The .61 VF had a front caburetor with rear exhaust, and the .61 VR had a rear carburetor with rear exhaust.