R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 11-19-2001, 04:01 PM   #46
Tech Elite
 
AMGRacer's Avatar
 
Join Date: Oct 2001
Location: Brisbane, Australia
Posts: 3,939
Default

Quote:
Originally posted by vapourtrail
Hey Motorman,

What do you think about Picco's Torque carbs? (except there size)
Annular discharge is the way to go for more torque on big block 4 stroke "top fed" engines for more torque. I am not sure whether they significantly increase torque in a nitro engine as the extra atomisation may be wasted by the time it makes its way thorugh the crank area. Motorman will know for sure
AMGRacer is offline   Reply With Quote
Old 11-19-2001, 06:52 PM   #47
Tech Addict
 
NItRO PuPS's Avatar
 
Join Date: Oct 2001
Location: San Francisco
Posts: 717
Send a message via AIM to NItRO PuPS
Default

o i will get my mt12 modded
NItRO PuPS
NItRO PuPS is offline   Reply With Quote
Old 11-20-2001, 10:36 AM   #48
Tech Regular
 
adelmundo's Avatar
 
Join Date: Sep 2001
Location: South San Francisco, CA
Posts: 266
Send a message via ICQ to adelmundo Send a message via AIM to adelmundo
Default

Dennis - I would like to know more about RC engine technology. I want to learn how they work, both the theoritical and technical aspects it. I have read all I can from the Paris motors website. Are their any other good websites/resources that you can recommend? I want to be an engine guru like you!
adelmundo is offline   Reply With Quote
Old 11-20-2001, 03:49 PM   #49
Dan
Tech Elite
 
Dan's Avatar
 
Join Date: Oct 2001
Posts: 4,407
Trader Rating: 48 (100%+)
Default

Your RB 5 port has similar porting and cuts as the Richey engines but the crank timing on the Richey is different.

You can compare it with the stock MT12. At first, I had no idea how the Richey mods looked like or why it was so much more powerful. I looked at LittoDeviL's mods (his mods were based on seeing the Richey pics but his engine mods turned out to be a fiasco) and I still didn't understand how it worked because of his poor craftsmanship and little effort.

But after opening up an RTU and comparing it to a stock MT12, I got an idea of why certain cuts were made drawing in a faster fuel/air mixture to the combustion chamber where claw marks were used as a guide for the transfer ports (which also has been modified.) The crank is also a work of art forming a scoop for the mixture and enlarged intake. Bored and polished carb, modified and lowered head button for higher compression ratio, and skirted piston. But of course, to get to the point of becoming like Dennis, it will take years and many engines...

After seeing RTO's and RTU's run, the Richey engines are worth every penny. I'll stick with my stock MT12 and CVR, they are already plenty for me.
Dan is offline   Reply With Quote
Old 11-20-2001, 03:56 PM   #50
Tech Elite
 
Join Date: Aug 2001
Location: Valencia, CA
Posts: 2,897
Send a message via Yahoo to TambokGT
Default

anybody had experienced with the new .21 collari on road engine sold at bruckner hobbies?
TambokGT is offline   Reply With Quote
Old 11-21-2001, 04:22 AM   #51
Tech Elite
 
Join Date: Aug 2001
Posts: 2,583
Default

TambokGT

Ask Old Skool II on the HPI Forum. He has one.

Ok actually ask him here on the MRX3 thread.

Last edited by Sydewynder; 11-21-2001 at 04:27 AM.
Sydewynder is offline   Reply With Quote
Old 11-21-2001, 05:17 AM   #52
Tech Regular
 
Mauler's Avatar
 
Join Date: Sep 2001
Location: SG
Posts: 413
Send a message via ICQ to Mauler
Default

I was wondering if the RTU's are made durable? As in if the parts are properly dyno tested and balanced for reliability and performance or is is like JP, which has a tendancy for performance mainly?
Any comments from the owners?
Mauler is offline   Reply With Quote
Old 11-21-2001, 09:05 AM   #53
Tech Master
 
Motorman's Avatar
 
Join Date: Nov 2001
Location: Michigan
Posts: 1,911
Trader Rating: 1 (100%+)
Default

.

__________________
Just here to give the world grief.

Last edited by Motorman; 03-08-2003 at 07:40 PM.
Motorman is offline   Reply With Quote
Old 11-21-2001, 10:27 AM   #54
Tech Initiate
 
Join Date: Nov 2001
Posts: 20
Default

That RB with a broken crank was mine! But Dennis provided prompt service, and we got th engine running again in no time!
RyanS is offline   Reply With Quote
Old 11-21-2001, 02:24 PM   #55
Tech Master
 
Motorman's Avatar
 
Join Date: Nov 2001
Location: Michigan
Posts: 1,911
Trader Rating: 1 (100%+)
Default

.
__________________
Just here to give the world grief.

Last edited by Motorman; 03-08-2003 at 07:40 PM.
Motorman is offline   Reply With Quote
Old 11-22-2001, 09:19 PM   #56
Registered User
 
OB42TC3's Avatar
 
Join Date: Nov 2001
Location: Columbus, OH
Posts: 417
Default

[email protected] say no problem with rubber bearing
OB42TC3 is offline   Reply With Quote
Old 11-23-2001, 03:23 AM   #57
Tech Apprentice
 
Join Date: Nov 2001
Posts: 98
Default RB vs Nova/Mugen

Motorman I posted a question to you about this in the HPI forum, but you must not have seen it I was wondering why you base your engines on Novas and Mugens but not RBs (until recently?). Is there something you dislike about RB? I am deciding on a .12 size rear exhaust and the RBs are considerably cheaper here. Is RS12 a big improvement on X12? Sorry for so many questions but if you or anyone else could answer I would be very pleased
SHARP is offline   Reply With Quote
Old 11-23-2001, 08:14 AM   #58
Tech Master
 
Motorman's Avatar
 
Join Date: Nov 2001
Location: Michigan
Posts: 1,911
Trader Rating: 1 (100%+)
Default

*
__________________
Just here to give the world grief.

Last edited by Motorman; 01-07-2002 at 02:14 PM.
Motorman is offline   Reply With Quote
Old 11-23-2001, 11:53 AM   #59
Tech Addict
 
NItRO PuPS's Avatar
 
Join Date: Oct 2001
Location: San Francisco
Posts: 717
Send a message via AIM to NItRO PuPS
Default

So motorman your gonna start modding them o.s.'s?
man theres gonna be ALOT more people knocking on your door
NItRO PuPS
NItRO PuPS is offline   Reply With Quote
Old 11-23-2001, 01:47 PM   #60
Tech Master
 
Motorman's Avatar
 
Join Date: Nov 2001
Location: Michigan
Posts: 1,911
Trader Rating: 1 (100%+)
Default

.
__________________
Just here to give the world grief.

Last edited by Motorman; 03-08-2003 at 07:40 PM.
Motorman is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cam modified motors (3) crazymechmow R/C Items: For Sale/Trade 12 01-15-2006 02:50 PM
FS: Modified motors (7T, 9T) WeatherB R/C Items: For Sale/Trade 10 09-21-2005 06:56 AM
FS: 3 Richey / Collari modified motors ChrisF R/C Items: For Sale/Trade 3 12-13-2003 06:03 PM
FS: Richey Modified motors ChrisF R/C Items: For Sale/Trade 0 08-28-2003 10:22 AM
dennis richey motors for sale dg8one R/C Items: For Sale/Trade 13 12-10-2002 06:21 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 01:21 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