R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road

Reply
 
Thread Tools Search this Thread
Old 06-21-2008, 10:55 AM   #1
Tech Initiate
 
Join Date: Nov 2006
Posts: 42
Default twin mp777 now even more power

decided to upgrade the twin mp777 the 2 rb c6 bb engines were great, but i just wanted more power. it now has 2 x picco .28 team edition engines with ofna 086 pipes. the gearing at the moment is still the same 22t bells and 46t so top end is not going to be any different at the moment, but i will be trying to upgrade when the engines have been tested and set up.
here are a few pics of the progress so far. this time i have installed a pressure feed of the right engines pipe so i can run each engine idependently. plus if this works well it will allow me to use 2 seperate fuel tanks.
still needs a bit more work
this is how it was before

and this is with the picco's









chris

Last edited by chris52; 06-22-2008 at 10:02 AM.
chris52 is offline   Reply With Quote
Old 06-21-2008, 07:12 PM   #2
Tech Addict
 
superdave2's Avatar
 
Join Date: Feb 2008
Location: mars
Posts: 699
Trader Rating: 3 (100%+)
Default

__________________
Team Terribles~ARCS Hobbies~Have Fun Hobbies~Answer-RC~Torco Fuel~Fastlane Graphix~ Caster Racing Products~Maxamps~Clockwork Racing Engines~BCG Industries
losi 8t dps .28 jr z9100s jr z9000t
spektrum dx3
superdave2 is offline   Reply With Quote
Old 06-21-2008, 09:36 PM   #3
Tech Fanatic
 
Tree's Avatar
 
Join Date: May 2006
Location: Murrieta, California
Posts: 839
Trader Rating: 8 (100%+)
Send a message via ICQ to Tree
Default

That rig is sick!!! You need to post some videos of that thing running.
__________________
Team Holy Rollers
HiTec Servos
"N-Tune" Nitro Engine Tuning Dials
Tree is offline   Reply With Quote
Old 06-22-2008, 03:03 AM   #4
Tech Initiate
 
Join Date: Nov 2006
Posts: 42
Default

Its going to be at least a couple of weeks before it is up and running properly as both engines need breaking in yet. i do have a video with the rb engines in

link here

chris
chris52 is offline   Reply With Quote
Old 06-22-2008, 04:15 AM   #5
Tech Master
 
khoo's Avatar
 
Join Date: Feb 2007
Location: Along Equator
Posts: 1,266
Trader Rating: 1 (100%+)
Default

Please do put up the speed test with the 2 Pico engines in it! this is a hit! Amazing!!!
khoo is offline   Reply With Quote
Old 06-22-2008, 09:19 AM   #6
Tech Elite
 
MadRussian's Avatar
 
Join Date: Dec 2007
Location: SE USA
Posts: 2,378
Trader Rating: 3 (100%+)
Default

uber cool!!!!
MadRussian is offline   Reply With Quote
Old 06-22-2008, 11:01 AM   #7
Tech Addict
 
wes95_z28's Avatar
 
Join Date: Nov 2006
Location: Norman, Ok
Posts: 747
Trader Rating: 3 (100%+)
Default

Wow, that is cool, yet incredibly simple and a very clean install.
__________________
Wes

Kyosho 777 WC w/ big bores, RB S5, ACE 1313 s., Air 357 t., JP-3
HPI Savage X SS, Axial .28, Hitec 5645 Steering servo
Nitro TC3, O.S. .18 CV-R
Associated RC18T, Brushless, Lipo
wes95_z28 is offline   Reply With Quote
Old 06-22-2008, 11:59 AM   #8
Tech Champion
 
Maximo's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jan 2005
Posts: 7,900
Trader Rating: 11 (100%+)
Default

I have some advice for the Picco engines.... many of them suffer from an airleak between the carb body and metal end bell. just like the Go engines did.... I strongly suggest everyone seal their Picco's this way...




I have found with dozens of these motors that they respond very well to this sealing..the tuning becomes much easier and the motor no longer requires such a hot plug to run well.... As well the motor will be much less likely to want to over run off the jumps....This area starts leaking once the carb body gets heat soaked, so usually its only causing a problem after about 5-10 minutes of use.... All of a sudden the motor will start acting lean and the tune will start fluctuating....
Maximo is offline   Reply With Quote
Old 07-28-2008, 03:16 PM   #9
Tech Initiate
 
Join Date: Nov 2006
Posts: 42
Default

well thed speed chassis is nearly finished, chassis made all the running gear is fitted and working. decided to change the picco engines for 2 os 28xz with hong nor big bore pipes.
anyway here are a few update pics










all finished bar a couple body posts :-D
pics here















chris
chris52 is offline   Reply With Quote
Old 07-28-2008, 05:12 PM   #10
Tech Regular
 
jeff1's Avatar
 
Join Date: Oct 2004
Posts: 377
Default

Quote:
Originally Posted by Maximo View Post
I have some advice for the Picco engines.... many of them suffer from an airleak between the carb body and metal end bell. just like the Go engines did.... I strongly suggest everyone seal their Picco's this way...




I have found with dozens of these motors that they respond very well to this sealing..the tuning becomes much easier and the motor no longer requires such a hot plug to run well.... As well the motor will be much less likely to want to over run off the jumps....This area starts leaking once the carb body gets heat soaked, so usually its only causing a problem after about 5-10 minutes of use.... All of a sudden the motor will start acting lean and the tune will start fluctuating....
what kind of seal is this grey one?
do you also seal carb neck?
jeff1 is offline   Reply With Quote
Old 07-28-2008, 06:49 PM   #11
Tech Fanatic
 
GH Racing's Avatar
 
Join Date: Jan 2008
Location: Vancouver, Canada
Posts: 795
Trader Rating: 3 (100%+)
Default

that is very cool
__________________
GH Racing by Golden Horizons. Buy Direct At: WWW.GHHOBBY.COM
FOLLOW US ON TWITTER NOW: twitter.com/GH_Racing
High Quality Machined Aluminum Parts and Accessories. Vancouver, Canada.
GH Racing is offline   Reply With Quote
Old 07-28-2008, 07:19 PM   #12
Tech Master
 
Join Date: Sep 2007
Posts: 1,080
Trader Rating: 5 (86%+)
Default

That really is an amazing piece of work

Since you're looking for top end, why didn't you go for on road .21s instead of those .28s? Just curious
__________________
FM 75.710
razor_clawzz is offline   Reply With Quote
Old 07-29-2008, 03:21 AM   #13
Tech Initiate
 
Join Date: Nov 2006
Posts: 42
Default

.21 circuit engines would have been ideal if i was running a multiple gear system in a very lightweight car. but as this is a single speed car and heavy i need the bottom end power of the .28 engines to get it going.

chris
chris52 is offline   Reply With Quote
Old 07-29-2008, 07:30 AM   #14
Tech Lord
 
Integra's Avatar
 
Join Date: Dec 2006
Posts: 12,482
Trader Rating: 8 (100%+)
Send a message via MSN to Integra
Default

Quote:
Originally Posted by jeff1 View Post
what kind of seal is this grey one?
do you also seal carb neck?

that is JB WELD....works like a charm for sealing up the carb....DO NOT use it to seal the carb neck tho...ONLY the seam between the body and composite
__________________
TNS Driver - Radio Post - Blue Groove Apparel - Team Panther - Hitec - Losi - W.E.D. Paint - Clockwork Fuel - Competition Heat - SUMO Racing - Tekin - Team Terribles - M2C Racing - Matrix Concepts - Kal Gard - BuKu Power - DE Racing -
Integra is offline   Reply With Quote
Old 07-29-2008, 11:43 AM   #15
Tech Apprentice
 
srac cr ot wen's Avatar
 
Join Date: Jul 2008
Posts: 67
Default

Quote:
Originally Posted by Integra View Post
that is JB WELD....works like a charm for sealing up the carb....DO NOT use it to seal the carb neck tho...ONLY the seam between the body and composite
damnnn, cant believe someone had to ask that.

of course its JB weld, a (read: my) rc cars best friend
__________________
Hey wes.... guess who?!
srac cr ot wen is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Twin mp777 speed results chris52 Nitro Off-Road 36 12-01-2007 03:31 PM
Twin RB C6 Kyosho MP777 chris52 Nitro Off-Road 23 10-24-2007 08:08 AM
Hotbodies GT Twin Motor, Twin Battery ESC. hype Australia For Sale/Trade 8 06-30-2007 08:18 PM
mp777 sp2 f/t tony montana R/C Items: For Sale/Trade 0 04-22-2007 12:55 PM
Twin Serio .27 Twin Super Charger Doublede12 Monster Trucks 4 01-22-2005 09:19 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 08:57 PM.


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