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-   -   REEDY .21 Nitro Engine (https://www.rctech.net/forum/offroad-nitro-engine-forum/231893-reedy-21-nitro-engine.html)

1sickGT 01-15-2010 06:05 PM


Originally Posted by Bigedmond (Post 6859147)
Plus the Carb. Check the crank to see what color the filler is. if it is red you are ok. if it is black, you will need to send it in. When the filler comes out, it does exactly what you are talking about.

Do you have pics of what to look for? Also where would i send it?

I need infos!

Bigedmond 01-15-2010 10:01 PM


Originally Posted by 1sickGT (Post 6859236)
Do you have pics of what to look for? Also where would i send it?

I need infos!

If the silicone is not smooth, or is rough it is likely going bad. You can also take off the back plate and look for little peicies of black silicone.

You would call AE, talk to don or chris. They will tell you to send the motor to them. The address is on the site. www.rc10.com. They normally will have a quick turn around.

1sickGT 01-15-2010 10:11 PM


Originally Posted by Bigedmond (Post 6859979)
If the silicone is not smooth, or is rough it is likely going bad. You can also take off the back plate and look for little peicies of black silicone.

You would call AE, talk to don or chris. They will tell you to send the motor to them. The address is on the site. www.rc10.com. They normally will have a quick turn around.

The motor is brand new and its bad already? :flaming:

Ugh. I sent AE an email.

wfo 01-15-2010 11:01 PM

Sent mine in on Thursday .It had the black silicone in the crank...it was going to pop out at any time, good thing i had checked it. :eek::weird:

Bigedmond 01-15-2010 11:58 PM


Originally Posted by 1sickGT (Post 6860012)
The motor is brand new and its bad already? :flaming:

Ugh. I sent AE an email.

It sucks yes. But other companies would do nothing. AE will replace the parts.

Midnight 01-16-2010 07:33 AM


Originally Posted by 1sickGT (Post 6858987)
I cant get my new 121 to idle with out the ignitor. Ive tried new plugs, same result. Any ideas?
The motor is at stock settings.
Running byrons 30% and p4 plugs.

Im not a newb, but its been a while. Like 4 years.

Try changing your glow plug.

1sickGT 01-16-2010 08:37 AM


Originally Posted by Midnight (Post 6860909)
Try changing your glow plug.

Same result.

1sickGT 01-16-2010 10:23 AM

Just ran half a tank, But with the ignitor still in. :confused:

I dont get it. Im going to try another plug this next time.
:cry:

1sickGT 01-16-2010 11:30 AM

well, i got it to run without the ignitor. But only for 15 secnds. That was it. After that it wont run at all. My box wont even turn it over now.

Never had so many issues with nitro. :(

Bout ready to buy a rtr and make this girl a shelf queen.:cry::cry::cry:

dan blight 01-16-2010 11:48 AM

is anyone running the hong nor 2047 pipe with this engine ??

dodger 01-16-2010 12:21 PM


Originally Posted by Bigedmond (Post 6859147)
Plus the Carb. Check the crank to see what color the filler is. if it is red you are ok. if it is black, you will need to send it in. When the filler comes out, it does exactly what you are talking about.

Hi,just started running in my new Reedy,are all engines with the black filler affected,because thats what mine has got,should i send the crank/engine back?

Midnight 01-16-2010 02:01 PM


Originally Posted by 1sickGT (Post 6861570)
well, i got it to run without the ignitor. But only for 15 secnds. That was it. After that it wont run at all. My box wont even turn it over now.

Never had so many issues with nitro. :(

Bout ready to buy a rtr and make this girl a shelf queen.:cry::cry::cry:

Hey bro how much time is on ur motor?

1sickGT 01-16-2010 04:53 PM


Originally Posted by Midnight (Post 6861941)
Hey bro how much time is on ur motor?

Brand new.

I took it down to the hobby shop. We got it running. :D

Soooo noww. its running but running hot. Ive been slowly richening it but its not changing.

At least its running. :D

Bigedmond 01-16-2010 04:53 PM


Originally Posted by dodger (Post 6861679)
Hi,just started running in my new Reedy,are all engines with the black filler affected,because thats what mine has got,should i send the crank/engine back?

Call AE. Ask them. I know i have 1 with the black filler, and it still runs great. But i had my buggy fall apart.

Chris Reilly 01-16-2010 06:17 PM

Here is some info that might be of help to everyone.

Brandon Melton
Yeah sure thing, you are right, it's often the small stuff and even the simple things can get a engine to run great.

I'll go more in depth how I tune the motor, there are all different ways of how people break it in. This is how I have personally broke in my Reedy engines, and they all tune well and perform for a long period.
-always preheat before starting it up for the first time
-wrap the head with something like foam, foil, a sock or something to retain heat.
-idle just ONE tank through the engine (just to oil and seat the parts). LET COOL after first tank
-PRE HEAT engine again-on the second tank I am running the engine on the ground, with the HSN a little rich for lubrication but lean enough to get temps up to around 240. Run the whole tank out using idle to 1/2 throttle bursts. let cool again
-Keep doing this for 3 tanks, then for tanks 5-8 I keep it at the same HSN setting but now I am making about 100ft pulls of wide open throttle (temps still staying around 240).
-after 8 tanks I put a race tune on it and try to kick some butt
-biggest thing is making sure the engine cools after each tank, and then preheating it before the next start up. I usually preheat the engine for the first 1/2 gallon.

TUNING

I will say that on all 5 engines I have ran, I have never used a carb or back plate sealant, and have never had an air leak or funny tuning. Some people swear by sealing an engine but I have had good success without doing it.

I actually prefer to tune from the bottom end first, and can usually get it really close on the box before hitting the track. Here's how I go about a tune when I get to the track.

1.) Start engine and rev gently for about 2 minutes to get some heat into the engine, always tune the engine when up to close operating temp.
2.) I clear the engine out when a couple solid (not death revving) revs then listen to how it comes down to idle, wait about 5 seconds and hit the throttle.
3.) I look for a steady smoke trail and a steady clean pull from the bottom end. You don't want heavy smoke at first tapering into a faint trail. The engine shouldn't hesitate with a rich or lean bog. Should have a crisp sound with steady smoke.
4.) If the engine blows lots of smoke and hesistates to start pulling, lean the bottom end until you get what’s described above. If the engine doesn't blow smoke and stutters to accelerate, richen the LSN until the desired setting.
5.) A KEY indicator of having a close tune on the LSN is listening to the engine come from a rev back to idle. With the proper glow plug and a properly tuned LSN, the engine should almost immeditaly achieve idle speed after a rev on the starter box or on the track. If the idle hangs up, then slowly comes back to idle in "steps" you are too rich on the LSN, probably noticing a lot of smoke as described above. If the engine tends to run on and maintain a high pace without ever coming back down, the LSN is too lean. ALL THIS IS ASSUMING THE IDLE GAP IS SET CORRECTLY (which is around .6-.7mm.)
6.) Once the LSN is where I want it, I will tune the HSN on the track. Assuming climate hasn't changed dramatically since the last time I raced, this is usually only 1 hr. either leaning or richening for optimal tune. If it's the first time with a new engine, it may take a couple adjustments to hit correctly. A proper tune on the HSN should pull hard until the end of the longest straight, but never totally run out of smoke or "run on" at the end of the straight. If you have properly set the LSN and the engine runs on after long straights, the HSN is too lean. If you see a little smoke, and it doesn't run on, you are very close.
7.) After break in, if the engine runs and performs well, and all driving characteristics are as they should be, I don't pay attention to temps anymore. If you have it tuned properly, the temps will fall where they should. You will learn to trust your tune. I could just about tell you within 5 degrees what it would be before a pit guy checked it, LOL.
8.) After setting the HSN on the track, I will then just double check the LSN sound and response after a tank run before shutting it off after it's at full operating temp. Make any minor (if needed) adjustments, and then it's usually good for the rest of the day, unless the mains go into night fall.


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