HYPER-BOY Posted December 22, 2014 Share Posted December 22, 2014 Just been and got a gallon and got home, looked at it and saw a sticker 'Worlds Blend', though 'eye eye' that looks different... Checked the old empty bottle and the sticker is 'Race 2500 Gen 2'.. The Worlds is a 25% with 8% lubrication and the Race 2500 Gen 2 is 25% with 11% lubrication..... Question is, I presume I will have to richen the engine a little to get more lubrication (I run the 11% quite rich so probs won't hve to change it), will it run hotter or cooler with this 'Worlds Blend'??? Also, it will be ok won't it lol ? Quote Link to comment Share on other sites More sharing options...
atom3624 Posted December 22, 2014 Share Posted December 22, 2014 I would guess if you don't change the settings, with the same flow rate, and less oil going through, ..... good question!! It might get hotter as there's less lubrication. Al. Quote Link to comment Share on other sites More sharing options...
Nitroholic Posted December 22, 2014 Share Posted December 22, 2014 8% is marginal. It's fine if you can tune well and want optimum performance. 11% gives you a bit of a margin for error. Quote Link to comment Share on other sites More sharing options...
HYPER-BOY Posted December 22, 2014 Author Share Posted December 22, 2014 8% is marginal. It's fine if you can tune well and want optimum performance. 11% gives you a bit of a margin for error. Yeah that's what I was thinking, I can tune ok, then when it's tuned I can richen it some... Might just swap it for the usual stuff I think. Quote Link to comment Share on other sites More sharing options...
Nitro RC Nerd Posted December 23, 2014 Share Posted December 23, 2014 Good advice above...just go by the engine's performance...it might not need re-tuning. Worst case you'll throw off a spot-on tune you had but it should not be much in either direction. I switch fuels all the time and the biggest difference I find is just the smell. ;-) I encourage people to re-tune their engines every so often (by that setting the needles back to stock and starting from scratch. Often you'll end up with a better tune than you had. ;-) Quote Link to comment Share on other sites More sharing options...
Anthoop Posted December 23, 2014 Share Posted December 23, 2014 Question is, I presume I will have to richen the engine a little to get more lubrication (I run the 11% quite rich so probs won't hve to change it), will it run hotter or cooler with this 'Worlds Blend'??? Also, it will be ok won't it lol ? In theory you may have to lean the needles because with less oil the fluid has a thinner viscosity....and it will run cooler and cleaner because there is less drag on the moving parts and less oil in the combustion chamber when ignition happens. In practice you will hardly have to adjust. I have not used the 8% but would also say it is close to the edge and ensure you do not run lean. 1 Quote Link to comment Share on other sites More sharing options...
HYPER-BOY Posted December 23, 2014 Author Share Posted December 23, 2014 I'll make sure it's not lean and watch temps so should be ok. Quote Link to comment Share on other sites More sharing options...
atom3624 Posted December 23, 2014 Share Posted December 23, 2014 The 'less oil' theory meaning thinner viscosity makes some sense, but may mean it even sucks through / breathes the fuel slightly more quickly, which may make it a fraction richer, which may make it run cooler, as its effectively slightly richer .... This is complicated!! Al. Quote Link to comment Share on other sites More sharing options...
jordanp Posted December 23, 2014 Share Posted December 23, 2014 The 'less oil' theory meaning thinner viscosity makes some sense, but may mean it even sucks through / breathes the fuel slightly more quickly, which may make it a fraction richer, which may make it run cooler, as its effectively slightly richer .... This is complicated!! Al. agreed :shockingscary: Quote Link to comment Share on other sites More sharing options...
HYPER-BOY Posted December 23, 2014 Author Share Posted December 23, 2014 This is complicated!! You are not wrong lol !! Quote Link to comment Share on other sites More sharing options...
Nitro RC Nerd Posted December 24, 2014 Share Posted December 24, 2014 This is why it's best to focus on the tune and forget all that other stuff. I used to watch temps and subscribe to the 'slightly rich' method of tuning...but then realized that temps have nothing to do with the engines tune (ZERO), and instead of running 'slightly rich'..I run 'slightly not lean;. ;-) 1 Quote Link to comment Share on other sites More sharing options...
atom3624 Posted December 24, 2014 Share Posted December 24, 2014 Always edge on the rich side of just right. Same with the largescales, which generally 'you don't touch again' - you do, but not much! Many go for stratospheric mixture ratios with the aim of getting a fraction more petrol into the mix, which should give a fraction more power, not considering the relative lack of oil they're introducing in the leaning of the mixture could have a serious effect on motor longevity. Al. 1 Quote Link to comment Share on other sites More sharing options...
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