Graham Chadwick Posted January 17, 2011 Share Posted January 17, 2011 I am building an Acro Wot, it will be powered by a SC 65 four stroke. my experience of four strokes is limited. What tank size will give me a comfortable 10 minutes? What size prop' would work best? I have shortened the nose by 3/4". The plane will be covered with glass cloth. All advice is appreciated. Quote Link to comment Share on other sites More sharing options...
ken anderson. Posted January 17, 2011 Share Posted January 17, 2011 hello graham....an 8 oz tank will do you a 10 min flight no bother...on various throttle setting's......as for a prop...i'm not a 100% sure for that size engine....but i would have thought somewhere in the region of a 11*6/12*6....google for the SC 65 4st--you should get the info re prop size on there...... ken anderson ne....1. Quote Link to comment Share on other sites More sharing options...
Braddock, VC Posted January 17, 2011 Share Posted January 17, 2011 Graham, my saito 62 is probably similar in output to your sc 65, but much lighter and I flew mine with a 13x6 graupner g-sonic using 10% nitro fuel, I have to say the plane went very much better with a saito 82 and 14x6 apc. I used an eight ounce tank and still used to land with about a 1/4 of it left and was contemplating fitting a 6 ounce one but it crashed first. I'd go for the 8 ounce tank especially for the first flights as you find out how the acrowot goes on and on and on on landing approaches...... Quote Link to comment Share on other sites More sharing options...
Bob Cotsford Posted January 17, 2011 Share Posted January 17, 2011 I've actually got an SC65FS in my Acrowot, but I can't remember what size prop it's using, I think it's 12*6 or 12*7. I'll look when I get in tonight. The SC65 is an older generation 4 stroke, but will pull the Acrowot around ok as long as you don't expect unlimited vertical performance. I'm using a yellow SLEC square tank IIRC, which gives an easy ten minutes. Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted January 17, 2011 Share Posted January 17, 2011 I'd go for a 12x6 for starters - you might want to try a 12x7 (or even a 13x6 - depends how you want to fly it) once its fully run in. BEB Quote Link to comment Share on other sites More sharing options...
fly boy3 Posted January 17, 2011 Share Posted January 17, 2011 I flew my Acro on a Laser 62, with a 12*6 for years, with a Slec yellow tank. (9oz ) I think. Used to fly 10/12 mins and land with at least a 1/4 of a tank left. I would second BEB with a 12*6 to start, then experiment with a few different props to suit your flying style. Cheers Quote Link to comment Share on other sites More sharing options...
Bob Cotsford Posted January 17, 2011 Share Posted January 17, 2011 Graupner 12*6 after all. Quote Link to comment Share on other sites More sharing options...
Graham Chadwick Posted January 17, 2011 Author Share Posted January 17, 2011 Cheers chaps, consensus 12x6 and 8oz tank a good starting point. Quote Link to comment Share on other sites More sharing options...
Norman Eyers Posted February 17, 2012 Share Posted February 17, 2012 Ah chaps, think I need help here. My acro wot diagram shows fuel pipes from tank going UP to hole at top of bulkhead. As all my other models have pipes going out through centre of engine mount which is the correct approach? Quote Link to comment Share on other sites More sharing options...
Bob Cotsford Posted February 18, 2012 Share Posted February 18, 2012 Depends on where you want to drill a hole - my AW still uses the cutout provided at the top of the former after countless engine changes. What matters is that the tank and carb are lined up, how the tube gets from one to the other is irrellevant within reason. Quote Link to comment Share on other sites More sharing options...
Paul Marsh Posted February 18, 2012 Share Posted February 18, 2012 I've got a OS70 with a 9oz tank. Gets over 10 mins flight. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.