bjsparks Posted May 3, 2014 Share Posted May 3, 2014 hi guys ive got another thread running about my t-15 overheating, juts a thought im trying this optifuel optimix20. has anyone tried this and whats the opinion . I was using big bnag on my last t-15 np, but tried this for the price any info>?? bjsparks Quote Link to comment Share on other sites More sharing options...
J.K Posted May 3, 2014 Share Posted May 3, 2014 (edited) If you what Optifuel, look at the race mix. The RTR is cheaper but MEGA smokey. Byrons Race Gen is the fuel I'd recommend. For an extra Edited May 3, 2014 by James1986 1 Quote Link to comment Share on other sites More sharing options...
vibrating_cake Posted May 3, 2014 Share Posted May 3, 2014 We use 16% nitro on a warm plug in ours. Runs brilliant and starts on the 1st or 2nd pull every time Quote Link to comment Share on other sites More sharing options...
Nitroholic Posted May 3, 2014 Share Posted May 3, 2014 I run Optifuel Race in all my cars, and it's not bad. Byrons is better....but not worth the extra cost. You pay the same for a large bottle of each...but Byrons is sold in US gallons.....and that's about 3.8 litres. Optifuel is a full 5 litres. Personally, I avoid Optifuel RTR as I like to be able to see where my car is. Quote Link to comment Share on other sites More sharing options...
DaveJuk Posted May 3, 2014 Share Posted May 3, 2014 Im probably not the best person to ask, lol, but I have used optifuel race 25% in the past but now mainly use model technics big bang 25%, to be honest i havnt noticed any difference between the 2- except the colour! That and the fact i can just walk down the road to get the mtbb off the shelf, whereas i have to order optifuel in lol! Im no expert in fuels, but for my general bashing needs the mtbb is fine and i get a good deal so cant complain, just my 2 cents worth. Quote Link to comment Share on other sites More sharing options...
bjsparks Posted May 3, 2014 Author Share Posted May 3, 2014 would using 20% instaed of 16 increase the heast that much?? btw I haven't noticed that much smoke Quote Link to comment Share on other sites More sharing options...
J.K Posted May 3, 2014 Share Posted May 3, 2014 The nitro content doesn't effect the temps directly. If you run a higher nitro fuel you'll generally end up with a richer tune (can't remember why ) It is this richer tune that allows the engine to run cooler. With reduced run times of course! Quote Link to comment Share on other sites More sharing options...
bjsparks Posted May 3, 2014 Author Share Posted May 3, 2014 so you don't thin it would help james with the over heating then james?? ive already set hsn to factory . Quote Link to comment Share on other sites More sharing options...
carlos150279 Posted May 3, 2014 Share Posted May 3, 2014 Byron 25 all the time mate!! Quote Link to comment Share on other sites More sharing options...
J.K Posted May 4, 2014 Share Posted May 4, 2014 I wouldn't be recommending 25% nitro in a .15 engine you'll prob need to shim the head to reduce compression, which gets far too complicated for my liking! Quote Link to comment Share on other sites More sharing options...
Pistonhead Posted May 5, 2014 Share Posted May 5, 2014 Found my hyper .21 didn't like 25% Optifuel Race, could never get a solid tune out of it. With Byrons 25% it went better and only needed a small adjustment to get the tune spot on in different ambient temperatures. Never lost a tune with that stuff. Quote Link to comment Share on other sites More sharing options...
jordanp Posted May 7, 2014 Share Posted May 7, 2014 i found my .15 was very happy with the 25% lol it just ran so sweatly nether had a problem Quote Link to comment Share on other sites More sharing options...
Cod head Posted May 7, 2014 Share Posted May 7, 2014 Used optifuel 25% in my pulse smoked like hell, now using RB Race 25% only a couple quid more hardly any smoke and better performance Quote Link to comment Share on other sites More sharing options...
JamesBryan Posted May 7, 2014 Share Posted May 7, 2014 On my first ever nitro rc car (HPI Bullet ST 3.0) and using Optifuel RTR 20% and it is smokey. I think once i've got through this bottle of fuel, i'll change to the 'Race' version instead. 1 Quote Link to comment Share on other sites More sharing options...
jordanp Posted May 7, 2014 Share Posted May 7, 2014 good choice m8 Quote Link to comment Share on other sites More sharing options...
gavin28 Posted May 7, 2014 Share Posted May 7, 2014 I use it my self for my small block engines, and as long as you don't tune by the smoke trail its fine, Although when it runs out I'm switching to the VP fuel i have stocked up on with the offer that was on (or still is - I've not checked) Quote Link to comment Share on other sites More sharing options...
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