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 08-30-2006, 10:28 PM   #16
Tech Elite
 
EdwardN's Avatar
 
Join Date: May 2003
Location: SoCal
Posts: 2,144
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Colt4g63
I wont argue with anyone on here as thats not why im here.. But I'll state a fact. Its not possible to perfectly balance a single cylinder engine bottom line. I dont care what TNT mods says... But this in know way means that TNT doesnt do a good job on there engines, please dont get me wrong there.
Hey Colt. Welcome to the family!
It doesn't make sence to argue here because we came to learn from each other expirience. Can you open please one of your secret-how much % balancing is your target when you mode crancks-I have confused data collected over the years and it seems like your data can clear up something.
thanks a lot.
__________________
DISCLAIMER: Since 90% of my posts may be BS, and since my posts may be either insanely idiotic, incoherent, and/or not even close to a rational thought, please accord my posts no more than 10% of credibility.
EdwardN is offline   Reply With Quote
Old 08-30-2006, 10:47 PM   #17
Tech Addict
 
Colt4g63's Avatar
 
Join Date: Apr 2006
Posts: 602
Trader Rating: 8 (100%+)
Default

EdwardN I dont have any secrets
Colt4g63 is offline   Reply With Quote
Old 09-03-2006, 04:35 PM   #18
Tech Adept
 
ksj44's Avatar
 
Join Date: Oct 2004
Location: Middletown, PA
Posts: 136
Trader Rating: 11 (100%+)
Default

Does anyone know what type of "epoxy" is used for ramping the crank porks. I am only assuming it is epoxy because this is what it is commonly called.

Thanks

Keith
ksj44 is offline   Reply With Quote
Old 09-03-2006, 08:32 PM   #19
Tech Addict
 
Join Date: Nov 2004
Location: KISSIMMEE,FLORIDA
Posts: 700
Trader Rating: 2 (100%+)
Default

FIRST LET ME SAY I'M NO EXPERT,BUT I DO HAVE EXPERIENCE IN MODDING ENGINES.THE ERROR MOST PEOPLE MAKE IS THINK THAT A CRANK IS BALANCED,AND IT'S NOT.THE COUNTER WEIGHT ON THE CRANK IS TO OFFSET THE WEIGHT OF THE PISTON AND CONNECTING ROD.SO IF YOU REMOVE MATERIAL FROM THE COUNTER WEIGHT YOU MUST REMOVE WEIGHT FROM THE PISTON AND ROD.THE CRANK IS STEEL ,VERY DENSE METAL.THE ROD AND PISTON ARE MADE OF ALUMINUM ALLOY,MUCH LIGHTER MATERIAL.SO IF YOU THINK ABOUT IT IF YOU REMOVE 1/4 GRAM OF WEIGHT FROM CRANK YOU NEED TO REMOVE THE SAME AMOUNT FROM THE PISTON AND ROD.(JUST CUT THE ROD IN HALF! )SO YOU SEE IT'S REALLY NOT POSSIBLE TO REBALANCE AN ENGINE PROPERLY UNLESS YOU ADD THE WEIGHT BACK ON THE CRANK IN THE FORM OF A PLUG OF SOME SORT,IVE SEEN MOTORS WITH WEIGHT PLUGS ADDED TO COMPENSATE FOR CUTS MADE TO A CRANK TO INCREASE PERFORMANCE.JUST MY OPINION,NOT LOOKING TO START A DEBATE.
__________________
Ahhh the smell of nitro in the morning!
Brooklyn Hobbies Team Driver
[url]www.brooklynhobbies.com[/url]
Team Trinity
[url]www.teamtrinity.com[/url]
Gary Figueroa
GFIGUEROA is offline   Reply With Quote
Old 09-03-2006, 11:20 PM   #20
Tech Addict
 
Colt4g63's Avatar
 
Join Date: Apr 2006
Posts: 602
Trader Rating: 8 (100%+)
Default

I use what was recomended to me by Brian AKA MXwrench. Threebond 1211 This stuff is awsome and it lays smooth as glass if done right! The only bad thing is that it takes a good 2 days to setup nice and hard. I usually let the engine set for 2-3 days just to make sure its totally cured. This stuff hasnt failed me once! And when I test engines I down right ABUSE them!!
Colt4g63 is offline   Reply With Quote
Old 09-04-2006, 08:30 AM   #21
Tech Adept
 
ksj44's Avatar
 
Join Date: Oct 2004
Location: Middletown, PA
Posts: 136
Trader Rating: 11 (100%+)
Default

Thanks Colt4g63, where do you get this stuff?

Keith
ksj44 is offline   Reply With Quote
Old 09-04-2006, 10:12 AM   #22
Tech Addict
 
Colt4g63's Avatar
 
Join Date: Apr 2006
Posts: 602
Trader Rating: 8 (100%+)
Default

I get mine off the net here.. http://www.pro-flo.com/three_bond_products.htm#Sealants
Colt4g63 is offline   Reply With Quote
Old 09-14-2006, 06:49 PM   #23
Tech Master
 
mugenb46's Avatar
 
Join Date: Jun 2006
Location: springfield tn
Posts: 1,385
Trader Rating: 4 (100%+)
Default

hey guys I will start off by saying i'm not even claiming to be good , here is a p5 i did it turned out some great gains. i feel you just start off doing little things see what they change and take notes of your mods, what each thing did.i did this in my garage, the sleeve took about 1 hour, the crank took almost 3. the case not shown about 15 min. any questions or comments are welcome obviosley.
Attached Thumbnails
Engine Mods-mods.jpg  
mugenb46 is offline   Reply With Quote
Old 09-14-2006, 06:59 PM   #24
Tech Elite
 
wallyedmonds's Avatar
 
Join Date: Jul 2006
Location: Brampton ont canada
Posts: 3,662
Default

Quote:
Originally Posted by mugenb46
hey guys I will start off by saying i'm not even claiming to be good , here is a p5 i did it turned out some great gains. i feel you just start off doing little things see what they change and take notes of your mods, what each thing did.i did this in my garage, the sleeve took about 1 hour, the crank took almost 3. the case not shown about 15 min. any questions or comments are welcome obviosley.
iv never seen a crank like that befor,what dos it do for you.
wallyedmonds is offline   Reply With Quote
Old 09-14-2006, 08:38 PM   #25
Tech Master
 
mugenb46's Avatar
 
Join Date: Jun 2006
Location: springfield tn
Posts: 1,385
Trader Rating: 4 (100%+)
Default

well first i want to say i hope like hell this is not going to get stuff started like i'v seen in the other mod threads. i saw a pic of a crank like this done on a 12, i ran my p5 for some time before i did this and after doing this the fuel burn was more efficiant, throttle responce was way more crisp and sensitve, rpms increased on the top end at lower temps and the powerband started way sooner with the same pipe.it was explained in great detail what this mod does, it sounded like what i was looking for so i did it myself.
mugenb46 is offline   Reply With Quote
Old 09-14-2006, 08:41 PM   #26
Tech Master
 
mugenb46's Avatar
 
Join Date: Jun 2006
Location: springfield tn
Posts: 1,385
Trader Rating: 4 (100%+)
Default

and also my pic does not show the skill and amazing craftsmanship of the one i saw.
mugenb46 is offline   Reply With Quote
Old 09-15-2006, 01:24 AM   #27
Tech Elite
 
Join Date: Aug 2004
Location: Pole Position
Posts: 3,173
Trader Rating: 13 (93%+)
Default

what did you do to the crank case ?
__________________
Serpent 748 TQ | GIMAR Engines
Walter RC HObby | www.walterrchobby.com.au
BlueRC | www.bluerc.net
mrgsr is offline   Reply With Quote
Old 09-15-2006, 07:52 AM   #28
Tech Master
 
mugenb46's Avatar
 
Join Date: Jun 2006
Location: springfield tn
Posts: 1,385
Trader Rating: 4 (100%+)
Default

removed the front and rear bearings and polished the area were they sit in, i found by doing that it will free up just a fraction of the preasure that can sometimes bind the bearing.
mugenb46 is offline   Reply With Quote
Old 09-15-2006, 10:31 AM   #29
Tech Elite
 
EdwardN's Avatar
 
Join Date: May 2003
Location: SoCal
Posts: 2,144
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by mugenb46
removed the front and rear bearings and polished the area were they sit in, i found by doing that it will free up just a fraction of the preasure that can sometimes bind the bearing.
Hey Nugenb.
I am not bushing you, I just want to help you. When engineers are designing the engines they put press fittings for bearings in purpose. Usualy it is .015-.020 mm press interference. When engine works and heat up, crancase expend more then bearing ( material expention rates) and interference will be smaller (still will be there to keep beaqring steady in case) and will not slow down bearings. You can do whatever you want to, I just try to help and understand what is behind press fit.
Use this tool to make sure you are not overploishing bearings seats.
Attached Thumbnails
Engine Mods-s3700009.jpg   Engine Mods-s3700010.jpg  
__________________
DISCLAIMER: Since 90% of my posts may be BS, and since my posts may be either insanely idiotic, incoherent, and/or not even close to a rational thought, please accord my posts no more than 10% of credibility.
EdwardN is offline   Reply With Quote
Old 09-15-2006, 11:59 AM   #30
Tech Initiate
 
Warmac's Avatar
 
Join Date: Apr 2006
Location: Jamaica
Posts: 28
Send a message via MSN to Warmac
Default

Quote:
Originally Posted by mugenb46
well first i want to say i hope like hell this is not going to get stuff started like i'v seen in the other mod threads. i saw a pic of a crank like this done on a 12, i ran my p5 for some time before i did this and after doing this the fuel burn was more efficiant, throttle responce was way more crisp and sensitve, rpms increased on the top end at lower temps and the powerband started way sooner with the same pipe.it was explained in great detail what this mod does, it sounded like what i was looking for so i did it myself.

mugenb46, where can we get a link on this explanation? Sounds like it will help me understand what modding each area does for the engine. Or at least put us newbies to modding one step closer.
Warmac is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Engine Mods Omar Onroad Nitro Engine Zone 208 02-11-2007 04:06 PM
engine mods rjmods.net Web Links 2 12-22-2006 01:54 AM
ENGINE MODS? zrchobbies Electric Off-Road 11 08-29-2006 02:21 AM
Need some help with engine mods...... jamiekulhanek Onroad Nitro Engine Zone 6 08-22-2004 11:23 AM
F/S or F/T - Kyosho V1R with RB X12 engine and mods dg2b R/C Items: For Sale/Trade 0 02-21-2003 06:41 PM



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 12:16 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net