ORIGINAL: yakfish
I started mixing today! I pulled out an old airplane that has been collecting dust in the garage for a couple years. I wasn't enen sure if it ran or not. but I mixed up a blend 10% nitro, 20% castor and it stared right up! the plane needs some work before it can fly and I need to practice with it some also but the engine runs!
Then I fired up my Mugen MBX5T with a LRP Z.28 Spec 3. I had about half a tank of the 20% O'donnel race blend that I have been buying from the LHS left in it so I ran out the last of that fuel so I could get a comparison to my own 15% nitro 8% castor blend. it ran great! had lots of power. More than I expected out of just 15% nitro! It did seem to be on the rich side too so I need to tweek the tune just a bit. The LRP engine manual actually calls for 25% nitro so I might try to mix a quart of 25% and see how that runs. but I will save more money if I stick to a lower nitro content.
This is really cool mixing my own fuel! I should have started doing this years ago!
Thanks for all the help over the past few weeks!
My engines seem to have more power on my homebrew fuels too. My Mach 427 LST2 would wheelie on 25% nitro storebought fuel, but not 20%. On my 20% homebrew, I get wheelies. Kinda odd, but cool nonetheless.
The castor will make more of a mess, but running only 8% oil, it probably wont be a real noticeable difference. I run 12% oil in my engines which is probably overkill, but they seem to like it.