View Full Version : .09 Tuning


latemodel100
06-09-2008, 08:40 PM
Is it me or is it that it dont take but one or two notches on the adjuster and its out of wack right away, am I wrong in this or is that the way it should be.... 2.5 turns out to start once I back it off two or three clicks in either direction it begins to do the I am flooded or I am too lean sounds......

Benjie Wright
06-09-2008, 09:45 PM
You're normal latemodel, no need to make a trip to the old doc. The .09 is a hard engine to keep tuned, one or two clicks in and it want run, same one or two out it want run. You will probably need to play with glow plugs to get anything more out of it, try to get up with Mclin or Sam Presnal, them two know all the little secrets to tune them things. But don't go to the Doc just yet. Later=Benjie Wright

latemodel100
06-10-2008, 12:34 AM
Yeah I was hoping those two would chime in here and give some secrets out, LOL....... Its running good right now just seems alittle on the rich side though, but I am getting it figured out...............

Sam32
06-10-2008, 01:10 AM
Ok, here I am, lol. What fuel and what glow plug are you running? I recommend Blue Thunder HP8 for fuel and either an OS 8 or KB 1L for the glow plug. The .09s are finicky by nature, but if the fuel is too oily like Sidewinder they are much more finicky. Sidewinder has a synthetic oil that doesn't burn, and the .09s seem to like a castor oil fuel because the castor oil will somewhat burn. By the way, we will be running Blue Thunder HP8 at the Nats. So let me know those things, if they look good I have more ideas, but they are the most basic. Good luck, glad that you are making the foray into Nitro, we will be very glad to have you.

ScottH
06-10-2008, 01:13 AM
HEY SAM!!! Good run at the GASCAR race btw. You are going to make the next one back at Easley I hope.

Un Hijack Thread

Sam32
06-10-2008, 01:17 AM
Thanks Scott, yeah, I was questioning it for a while because of the tires it ate, but I would like to support you guys so I'll be there. Now I just need some luck, Lol.

latemodel100
06-10-2008, 05:34 AM
Running the same fuel as you now, was running ODonnell 20% I just made the switch to the HP8 with the Fox Short Plug supposedly the OS 8 equal...... I see long and short?

Sam32
06-10-2008, 07:22 PM
Ok, from there you need to check the carburator. The fuel discharge tube should be visible when you look down the barrel of the carburator. If it is not it will have trouble pulling fuel. We usually run it so that the tube is about 25% in the barrel opening so that it pulls fuel well. That should help it be less finicky, especially at idle. I noticed as well in the first post that you had the adjuster out 2.5 turns. We usually start at 2 turns out, and when tuning on the track it usually ends up between 1.5 and 1.75 turns out. Also make sure the adjuster is standing up straight. The best way to tune an .09 is to take it out on the track and run for about 10 laps and check the temperature. It needs to be between 250 and 300, depending on your gauge, some read higher than others. We usually shoot for 280-290, 300 is about the highest you can go and not worry about doing damage. An .09 can sound sick if its cold, and will feel flat for the first few laps on the track until it gets heat in it. I know that's a lot to look at, but once you get an .09 right and know what to look for they're pretty simple, and I'll be glad to continue helping in any way.

latemodel100
06-11-2008, 01:21 AM
Awesome thanks...... will give the results after this weekend........

Echeconnee
06-11-2008, 03:23 PM
I use sidewinder with no problems, I have even used the 16% oil 20% nitro basher stuff without any trouble. Anyway like Sam said, take a few laps get it good and warm then what I do next is hold the throttle wide open and crank in on the needle till it starts to starve out and then go back in 2-3 clicks. I usually end up around 275 deg at the end of a 5 minute heat.

latemodel100
06-15-2008, 12:06 PM
HP8 fuel is much better in the way I tune the .09 it worked great yesterday, I had alot more tuning able to get too as the day went on instead of just one click or two either way....

Thanks for all the advice its all coming in slowly but surely...........

Sam32
06-16-2008, 01:07 AM
That's great, & I'm glad I could help. Last year we were running HP8 as the handout fuel in the .09 Series, but we had to run Sidewinder at the Nationals, and it threw all of us for a curve. Cliff had an advantage because he was used to it, lol. But my best motors on HP8 wouldn't run on Sidewinder. They were doing what your motors were, they sounded too rich, but when you leaned them out they wouldn't run. I believe Mclin has convinced the "Powers that Be" to let us run HP8 at the Nationals this year because we'll be using all the other rules from the .09 series. I'm glad that you got it going, and I'm glad you made the jump to nitro.

Echeconnee
06-16-2008, 09:53 PM
I tell you what the difference was now Sam as we won't be running the sidewinder again this year. I did everything I could to increase compression legally and ran a taller gear than what everyone else was running. You guys had your engines screaming and they wouldn't act right on the sidewinder. I ran a really hot Racers edge plug too. I finished 3rd in the "A" but some of you guys were still faster than I was, I just couldn't get the .09 freed up like the .12, the .09 was a gen 1 car as the .12 was a gen2 and I ran a dodge on the .09 and a yota on the .12 I hope to run a little better against you guys this year. All that aside the nitro is a freakin BLAST!

Sam32
06-17-2008, 12:51 AM
That's still interesting Cliff. I had one motor and one carburator that liked Sidewinder, and the others I just couldn't get tuned in on it. I tried different gears and head shims and glow plugs and that one motor was all I could get to do anything. But, it did run really good. I ran just as fast with it on Sidewinder as I did HP8. I think you'll like the HP8 this year when you try it, for most of us its just easier to work with, but I'm sure its all in what you're used to. I didn't want to stir up anything with the fuel stuff, I was just not wanting latemodel100 to get frustrated and give up and I was drawing from my own experience to help him out, because nitro is a freakin blast, and the more the merrier I always say.

latemodel100
06-17-2008, 02:28 AM
Just from the testing I did this past weekend with the HP8 for the first time using it compared to the last running on the ODonnell, I like the HP8 better it seems to be easier to work with as well as allowing me more adjustability on the carb.....

I was down to 1 3/4 turns by the end of the day and still only at or around 225 deg.....

Oh BTW it takes alot more than fuel to get me frustrated, LOL............

Echeconnee
06-17-2008, 04:07 PM
Sam, it don't matter what fuel we run, long as we run!

latemodel100
06-17-2008, 06:19 PM
Amen.............

McLin
06-20-2008, 09:20 AM
"Somewhat" on topic here but just as a FYI, HP8 will be the handout fuel at the ROAR Nationals for the .09 class.

Echeconnee
06-20-2008, 12:45 PM
I like sidewinder better, waaaaaaaaaa, BOOOOO HOOOOO, I'm gonna bycott the race if I can't run Sidewinder. This is Manufacturer bias, booo hooooo. Oh wait, sorry that's electric racing! lol

latemodel100
06-20-2008, 11:39 PM
I truely dont care what fuel as long as the Nitro car runs, LOL>............ just give me more fuel..............

ScottH
06-21-2008, 12:06 AM
Cliff you had it right.

It IS manufacturer bias.

Biased towards the manufacturer GIVING us the fuel to run! :D:D:D

latemodel100
06-21-2008, 12:27 AM
McLin can I use the Blue Carb adaptor with the Gold stinger and be legal for the Limited Class or the Pro Class

Blue with Blue
Gold with Gold or how does that work.....

Just trying to make sure I can with what I got..........

And as well can you shoot me an email letting me know if you have more of the adaptors and stingers available.........

Sam32
06-21-2008, 01:35 AM
I'm not Mclin, but I can help, lol. The blue carb adapter with the gold muffler stinger is what we'll be using at the nats. It will be the Pro class rules because the limited class fizzled out.

Also, that's pretty funny Cilff. One of the best things about nitro is not having to deal with the whining. We just race.

latemodel100
06-21-2008, 02:24 AM
Ok cool sounds good to me I had read about the two different carb adaptors so I was just curious as to how I needed to configure my car for runs down that way when ever time allows it and its not a 1/4 scale weekend for me here....... I am working on the guys up here for some Nitro drivers,,,,,, give me time I will recruit one or two if not more...... Everyone seems to like it............

Sam32
06-22-2008, 01:56 AM
That's great. R/C is kind of falling off everywhere with the economy and all that junk, and since nitro was already a smaller group to start with we need all the numbers we can get. Get them hooked!

McLin
06-22-2008, 02:55 PM
Latemodel - There is only one carb adaptor. You may see a slightly different color of anodizing but that was just a production deal.

The only stinger allowed in the Limited class was the blue one but as Sam said, that class pretty much fell by the way side for lack of interest.

latemodel100
06-22-2008, 04:44 PM
oh ok cool, I gotcha then not a problem.............