Four Stroke Recommendation for WM Spot On 50

dtm360 · Mar 26, 2007, 10:48 AM

I'm looking for a 4 stroke engine for my new WM Spot On 50.

http://theworldmodels.com/para/produ...airplaneid=162

The instructions recommend a 52-70. I was thinking of a Magnum 70. This is going to be my first 4 stroke after many years of 2 stroke experience from RC cars, helis and now planes, so I would like a fairly easy start to my 4s experience

Do you guys think the Magnum will be OK?.....or should I go the whole hog and get a Magnum 91?

sdueck · Mar 26, 2007, 10:52 PM

I would definitely go with a Magnum .91RFS. I just fired mine up (it beign my first four stroke as well) and this thing is great! I love it. I have already run 5 tanks through it tonight, breaking it in, and I am so eager to get it in my plane and fly! I knwo that it is only like 1 oz more than the 70, and like $20 more. The weight penalty is negligible, and you are already getting a good deal on the motor for like $150. There isn't much to complain about, other than the weather! Magnum .91 hands down!

P.S. I have been hand starting it, becuase my starter isn't here yet, and it was even easy to do that, even on a brand new engine. Now I am looking at 2 to 3 flips and the engine is running, even when it is super super rich. This thing is a hoss!

Mar 26, 2007, 10:48 AM	#1
dtm360 Registered User Hong Kong Joined Sep 2004 492 Posts	Four Stroke Recommendation for WM Spot On 50 I'm looking for a 4 stroke engine for my new WM Spot On 50. http://theworldmodels.com/para/produ...airplaneid=162 The instructions recommend a 52-70. I was thinking of a Magnum 70. This is going to be my first 4 stroke after many years of 2 stroke experience from RC cars, helis and now planes, so I would like a fairly easy start to my 4s experience Do you guys think the Magnum will be OK?.....or should I go the whole hog and get a Magnum 91?

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Mar 26, 2007, 10:52 PM	#2
sdueck I Wish I Was Flying... United States, CO, Littleton Joined Nov 2006 671 Posts	I would definitely go with a Magnum .91RFS. I just fired mine up (it beign my first four stroke as well) and this thing is great! I love it. I have already run 5 tanks through it tonight, breaking it in, and I am so eager to get it in my plane and fly! I knwo that it is only like 1 oz more than the 70, and like $20 more. The weight penalty is negligible, and you are already getting a good deal on the motor for like $150. There isn't much to complain about, other than the weather! Magnum .91 hands down! P.S. I have been hand starting it, becuase my starter isn't here yet, and it was even easy to do that, even on a brand new engine. Now I am looking at 2 to 3 flips and the engine is running, even when it is super super rich. This thing is a hoss!