R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro On-Road > Onroad Nitro Engine Zone

Reply
 
Thread Tools Search this Thread
Old 02-18-2005, 09:48 PM   #736
Registered User
 
Join Date: Aug 2001
Location: Charleston WV
Posts: 939
Send a message via AIM to bbntc3
Default

Hi Dennis! Just checking in, interested in the Winter NATS?

How did engine/car perform ??

Bob
bbntc3 is offline   Reply With Quote
Old 02-18-2005, 09:53 PM   #737
Tech Elite
 
HarKonnenD's Avatar
 
Join Date: Aug 2001
Location: Connecticut
Posts: 3,024
Trader Rating: 23 (100%+)
Send a message via AIM to HarKonnenD
Default

I wonder if I'll see these at the WRAM show. A little skeptical about buying any engine from there as if I have a problem or it's missing something I can't return it.
__________________
Trying to live every day like its the last....
HarKonnenD is offline   Reply With Quote
Old 02-18-2005, 10:06 PM   #738
Registered User
 
Join Date: Aug 2001
Location: Charleston WV
Posts: 939
Send a message via AIM to bbntc3
Default

I would think RD would have the best customer service out there for now.
bbntc3 is offline   Reply With Quote
Old 02-20-2005, 09:50 AM   #739
Tech Elite
 
Pit-racer's Avatar
 
Join Date: Aug 2001
Location: Cali/Texas
Posts: 2,273
Trader Rating: 4 (100%+)
Default

Dennis, still interested in the new pipe 0505.
__________________
Team Misfits / www.igthobbies.com / Desoto Racing / Veytrex.com / JZRacing / RcShox / IGT8 '17
Pit-racer is offline   Reply With Quote
Old 02-20-2005, 09:40 PM   #740
Tech Regular
 
gonzoY5's Avatar
 
Join Date: Mar 2004
Location: Miami, FL
Posts: 392
Default Determining correct plug

Motorman, do you have any articles or write ups on how to select the correct glow plugs? This isn't a "What's the best plug..." type question. I understand (I think) what a warmer or cooler glow plug does, why it does it, how it affects timing etc, but i think i'm having trouble selecting the right one. Info i'm looking for is like characteristics to look for that would "tell" me that i'm using too hot/cold of a plug. Today for example i was totally short on run time. My engine usually makes 5 minutes no problem. but at barely 4:15 today i was dry for example. It Also ran pretty hot. I'm in Miami fl, today was in the upper 70's with pretty dry contitions. I ran a 7tf plug. I'm running a JP with a new piston/sleeve touched up by Maxy & 30% Maxy's Fuel. Any help is greatly appreciated.

Last edited by gonzoY5; 02-20-2005 at 10:23 PM.
gonzoY5 is offline   Reply With Quote
Old 02-21-2005, 07:13 AM   #741
afm
Tech Master
 
afm's Avatar
 
Join Date: Nov 2003
Location: lima-peru
Posts: 1,807
Default Re: Determining correct plug

Quote:
Originally posted by gonzoY5
......... do you have any articles or write ups on how to select the correct glow plugs?............... but i think i'm having trouble selecting the right one. Info i'm looking for is like characteristics to look for that would "tell" me that i'm using too hot/cold of a plug......... today it was dry for example......... I'm in Miami fl, today was in the upper 70's with pretty dry contitions.......... Any help is greatly appreciated.
Gonzo, this might help.......

The numbers and characters on the plugs, are the product number, wire thickness, and thermal range of the plug’s body. Example: The Novarossi C6TG (F) or (C)

§ Product: C (Candele)
§ Wire Thickness: 6
§ Plug Type: T (Turbo)
§ Plated: G (Gold)
§ Thermal Range: F (Fredda = Cold)) C (Calda = Hot)

The plugs with cold thermal range F(Fredda), have a body with thinner walls and shorter body, so they dissipate heat better and faster to the engine head.

How to select the proper plug, regardless of Nitro %

·When the ambient temperature is high, we have to use a plug with thicker wire.

·Humidity determines if we use a Cold (F) thermal range, or Hot (C) thermal range.

·With high humidity percentage we should use a Hot (C) thermal range plug.

·If we have high temperature and high humidity, we should use a plug with thick wire and a Hot(C) thermal range.

The best instrument to determine which Turbo Plug to use, is those weather panels they sell for Yachts, that have Temperature, Humidity and Barometric Pressure on them. Have it calibrated at your local weather station, and you’re ready like the Pros.
That is the key to success or failure tuning engines with Turbo Glow Plugs, because they are so sensitive to weather variations that is unbelievable.

Following is a selection chart for Novarossi Turbo Glow Plugs

Type Thermal Range Nitro% Temp.C° Humidity%
C5TGC Hot/hot wire 10-20 0-10 70-100
C6TGC Hot/average wire 10-20 10-16 70-100
C7TGC Hot/cold wire 20-30 16-25 70-100
C8TGC Hot/ultra cold wire 20-30 25-up 70-100
C5TGF Cold/hot wire 20-30 0-10 40-70
C6TGF Cold/average wire 20-30 10-15 40-70
C7TGF Cold/cold wire 20-up 16-25 40-70
C8TGF Cold/ultra cold wire 20-up 25-up 40-70


AFM
afm is offline   Reply With Quote
Old 02-21-2005, 08:28 AM   #742
Tech Regular
 
gonzoY5's Avatar
 
Join Date: Mar 2004
Location: Miami, FL
Posts: 392
Default

Thanks, AFM. I've seen this before. But what I'm looking for is "signs" or characteristics to look for that help determine if you're using the wrong plug.
gonzoY5 is offline   Reply With Quote
Old 02-21-2005, 12:13 PM   #743
afm
Tech Master
 
afm's Avatar
 
Join Date: Nov 2003
Location: lima-peru
Posts: 1,807
Default

Quote:
Originally posted by gonzoY5
Thanks, AFM. I've seen this before. But what I'm looking for is "signs" or characteristics to look for that help determine if you're using the wrong plug.
When using a hot glow plug (low number, so thinner wire) the engine will give more RPM so it will be faster on top end then when you use a colder glow plug, however because the wire is thinner it can deform and break more easier.
When using a cold glow plug (high number, so thinner wire) the engine will give more torque (low end punch) then when you use a hotter glow plug.
Take the glow plug away and look at the thread :
1) If the spiral of the plug is a little bit pressed and bent it means that the engine is too compressed. If you are racing on a sea level track, with 25% or more nitro, it could be the main reason. Than you need to check under head shims and in that case insert a 0.1 mm shim.
2) If the thread of the plug, or the head has a dull, as sanded look, it means that the carburation is too lean, or you have a plug that is to hot, causing pre-ignition. You run the risk of breaking the spiral and make it fall down on the top end of the piston, damaging also the sleeve.
3) If the thread has a dark colour and the plug seems humid, the carburation is too rich and the engines does not work at its best. You have to lean the carburation closing the full speed needle.
4) When the thread is polished and the spiral does not present any imperfections, your plug is OK, and carburation is ok.

AFM
afm is offline   Reply With Quote
Old 02-21-2005, 04:07 PM   #744
Tech Regular
 
gonzoY5's Avatar
 
Join Date: Mar 2004
Location: Miami, FL
Posts: 392
Default

How about like running characteristics? Overheating, bad Idle, Low Run time. The plug tips only work with a new plug.
gonzoY5 is offline   Reply With Quote
Old 02-21-2005, 04:32 PM   #745
afm
Tech Master
 
afm's Avatar
 
Join Date: Nov 2003
Location: lima-peru
Posts: 1,807
Default

Quote:
Originally posted by gonzoY5
How about like running characteristics? Overheating, bad Idle, Low Run time. The plug tips only work with a new plug.
Those are a combination of factors, weather, carb, nitro, pipe, gearing, compression etc.

There is a a correct plug (check the table) for an engine which starts with correct shimming (compression) for the nitro you use.
Then weather conditions determine if you use cold or hot body.
And fine tuning depends on what you are looking high end or low end. Then you have to carburate accordingly. Of course if you have hot weather, and or hot and dry, and or hot and humid, or viceversa, and you have improper plug , engine will overheat, running time will decrease, idle becomes erratic, etc. Tips work the same with a good used plug. A faulty plug will show immediately, with car not wanting to start or dying out of nowhere or backfiring.

AFM
afm is offline   Reply With Quote
Old 02-24-2005, 06:41 PM   #746
Tech Lord
 
20 SMOKE's Avatar
 
Join Date: Dec 2003
Location: HVR_ WEEKI WACHEE FL
Posts: 10,299
Trader Rating: 101 (100%+)
Default

i have this pipe what is it top mid or low http://www.rdlogics.com/cgi-bin/cate...10L&type=store
__________________
Jamie W
*Team Tekin*Tekno-rc*DE Racing*AKA*DDHRC*
20 SMOKE is offline   Reply With Quote
Old 02-24-2005, 07:07 PM   #747
Tech Elite
 
YBSLOW's Avatar
R/C Tech Elite Subscriber
 
Join Date: May 2002
Location: ARIZONA
Posts: 2,368
Trader Rating: 6 (100%+)
Default low end pipe

I believe that is the original Turbo 1 pipe. Not as much top end as the turbo 2 and mot as much bottom as the 62505 which is the pipe used by the RD team in Florida.
__________________
YBSLOW Racing
RC Target - Capricorn
HOTRACE Tyres, Tru Source, Fantom
POWER MASTER Fuel, 2mm Designs
Protoform Bodies, Avid Bearings, AMR Engines
YBSLOW is offline   Reply With Quote
Old 02-24-2005, 07:10 PM   #748
Tech Lord
 
20 SMOKE's Avatar
 
Join Date: Dec 2003
Location: HVR_ WEEKI WACHEE FL
Posts: 10,299
Trader Rating: 101 (100%+)
Default

thanks
__________________
Jamie W
*Team Tekin*Tekno-rc*DE Racing*AKA*DDHRC*
20 SMOKE is offline   Reply With Quote
Old 02-28-2005, 05:11 PM   #749
Tech Regular
 
rowveg36's Avatar
 
Join Date: Dec 2001
Posts: 346
Trader Rating: 21 (100%+)
Default

please!!! need help w/ my bottom end. how many turns do you have your low end needle from a close positon? i'd really appreciate the help.
rowveg36 is offline   Reply With Quote
Old 02-28-2005, 05:48 PM   #750
Registered User
 
Join Date: Aug 2001
Location: Charleston WV
Posts: 939
Send a message via AIM to bbntc3
Default

I see Denis has bee in the forums some lately, but not in his engine forum... What's up with that????
bbntc3 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
richey Excellent Takt Buyer/Seller dispute and Feedback discussion forum 1 11-26-2005 09:27 AM
Richey Mt 12 Still New Jon Carlson R/C Items: For Sale/Trade 2 09-07-2004 04:56 AM
Richey RTU engine MT12 TexasRacer R/C Items: For Sale/Trade 0 03-08-2004 09:32 AM
RD/Richey racing engine update Motorman Nitro On-Road 38 12-07-2003 12:14 AM
Dennis Richey RTU MT12 Engine Dan R/C Items: For Sale/Trade 14 12-15-2002 10:11 AM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 06:03 PM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net