tc5 man

now tell me if this isnt weird, i been having trouble getting my rb to (idle right) it whould just idle good than it would drop off. even if i keep leaning out the (low end needle,) and the (high end needle a little and flame out during the race) and not run right.


well i put a new o donnell plug in, and bam idleing without a drop off and on the track i had more torque and speed i checked my old plug out and it does have a brownish color, on the glow plug from running rich and it still lights up bright.


is this because my engine is, only on its second gallon and starting to break in or something ? it dint flame out at all with the new plug.

CJ Weaver

Is it the same plug #? If you went to a hotter or colder plug it could have helped the engine. For example, if it is really humid, and you put a cold plug in, your motor won't run correctly.

tc5 man

it is a #100 odonnell plug its, a medium heat plug during the race day it was about 87 and it wasnt humit outside.

the old plug i was talking, about was the same plug as the new one i put in and it ran good with the new plug.

im running 20 % ebmods race blead fuel.

tc5 man

anybody else know ?

losi_racer

iTrader: (25)

plugs go out, not weird at all. could just not be heating as hot as it was. Dont worry about it. same thing happened to me this weekend, i kept flaming, wouldnt idle. I changed the plug and didnt flame all night

tc5 man

i see what you are saying but, all the coils where lit up and they were bright
trust me i wish i dint keep, on messing around with the needles and just changed the plug cause it caused a bad day for me man lol.


yea im not trusting those, dam iqniters anymore ethier the ones with the meter on them.

losi_racer

iTrader: (25)

if my engine starts running weird and nothing is changed(temp,fuel,filter, etc) i will change the plug. plugs can look perfect but cause tons of issues, as simple as its not hot as it should be,

tc5 man

yea i should of thought, of that its happen about 3 times them rb though dont seem to keep a tune at least when there on the second gallon.

and i did put on a brand, new prefilter on also when i put in a new plug.

houston

iTrader: (96)

both of which can drastically change the way the engine runs


new filter , lots of air , lots of power

new plug , proper combustion at the right time

the odo 100 plugs work great , are easy to tune but do not last forever , if you want to try another plug thats very similar try the odo77 , lasts a touch longer and works very similar .

8ight-racer

iTrader: (5)

RB's 'sport engines' don't hold there tune like most new competition engines nowadays.

inferno13

iTrader: (202)

i had that problem last year, i switched from 20% to 30% and problem solved for me, i have had alot of problems with 20% fuel, here they use 20% in 1/18 scale....lol

tc5 man

yea well i already have, a full gallon of 20 % so im not gone to waste it but after its done i will ethier use 25% or 30 %.


i did use 25 % before and it did seem to keep a tune better.

tc5 man

yea but i only club race, so i dont see the point in getting a race engine this is isnt a bad engine though i can keep up with other guys.

isnt the nova .21 bf a, sport engine that seem to keep a tune a lot better.

i know rb are made my nova.

tc5 man

yea il take a look at the 77 plug.

it is a rb s5 engine i am running it on, my truggy i looked at the 77 plug it says its just for .12 to .18 engines for 1/10 cars ?

8ight-racer

iTrader: (5)

The S5 is an older version of the Hobby 9, which is not even made anymore. Novarossi might make it, but RB designs their engines, and from experience, their sport engines don't hold their tune very well.

The Hobby 9 is selling for $245 where its still available, for $50 less you could of got a Werks B5 which would be a much better race engines and those engines hold a tune for gallons.