R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 10-17-2002, 12:13 PM   #2686
Tech Prophet
 
InitialD's Avatar
 
Join Date: Feb 2002
Location: MORDOR
Posts: 19,679
Default

Quote:
Originally posted by Ah10
How big is your local track?

If it is big then go for RS12T then get a regular head button, if it is like medium size then go for RBX12, both are 3 port, or may be try the new Sirio 3 port engine!
Interesting... How is the RS12 different from the RB X12 when both are short rod and 3 port design?

In my opinion, both of their engine characteristics should not be any different.
InitialD is offline   Reply With Quote
Old 10-17-2002, 01:21 PM   #2687
Tech Master
 
Im2lazy's Avatar
 
Join Date: Oct 2002
Location: Hawaii!
Posts: 1,967
Default

My track is really tight with a straight that requires most cars to make their second gear clutch bell one tooth higher with standard gearing. Thanks Ah10

Any one with setups?
Im2lazy is offline   Reply With Quote
Old 10-18-2002, 02:08 AM   #2688
Tech Master
 
Im2lazy's Avatar
 
Join Date: Oct 2002
Location: Hawaii!
Posts: 1,967
Unhappy

pleaseopleaseoplease!
Im2lazy is offline   Reply With Quote
Old 11-08-2002, 08:41 PM   #2689
Tech Rookie
 
Join Date: Nov 2002
Location: Honolulu, Hi
Posts: 12
Default

kyle just go to hobbytat and ask bobby
mark
mcdhi is offline   Reply With Quote
Old 11-09-2002, 12:22 AM   #2690
Tech Master
 
Im2lazy's Avatar
 
Join Date: Oct 2002
Location: Hawaii!
Posts: 1,967
Default

you realise I asked this about 3 weeks ago
at least be timely .
Im2lazy is offline   Reply With Quote
Old 11-09-2002, 01:02 AM   #2691
Tech Master
 
Ah10's Avatar
R/C Tech Charter Subscriber
 
Join Date: Sep 2001
Location: Pasadena/Southern California
Posts: 1,370
Send a message via ICQ to Ah10 Send a message via AIM to Ah10 Send a message via Yahoo to Ah10
Default

Quote:
Originally posted by InitialD
Interesting... How is the RS12 different from the RB X12 when both are short rod and 3 port design?

In my opinion, both of their engine characteristics should not be any different.
TIMING is different!
Ah10 is offline   Reply With Quote
Old 11-09-2002, 01:04 AM   #2692
Tech Master
 
Ah10's Avatar
R/C Tech Charter Subscriber
 
Join Date: Sep 2001
Location: Pasadena/Southern California
Posts: 1,370
Send a message via ICQ to Ah10 Send a message via AIM to Ah10 Send a message via Yahoo to Ah10
Default

Quote:
Originally posted by Im2lazy
My track is really tight with a straight that requires most cars to make their second gear clutch bell one tooth higher with standard gearing. Thanks Ah10

Any one with setups?
I would suggest you go RBX12, I had it before and I think it has more bottom and mid range, the RS12T has more topend! Hope it would help!

Oh one more thing you can play with the centex clutch engaging point to get more punch out of turns! it makes all the difference in the world and that's one of the reason why other ppl's car so punchy too!
Ah10 is offline   Reply With Quote
Old 11-10-2002, 04:56 PM   #2693
Tech Master
 
Join Date: Aug 2002
Location: Melbourne, OZ
Posts: 1,059
Trader Rating: 8 (100%+)
Send a message via Skype™ to JordanC
Default

I use an RS12 S3 on a track that you need to shorten from origional gearing. It makes a lot more torque than the origional RS12 and it's pretty much the quickest thing at the track!

p.s we only run 3 port .12's at our clubs
JordanC is offline   Reply With Quote
Old 11-11-2002, 10:22 AM   #2694
Tech Master
 
psycho's Avatar
 
Join Date: Aug 2001
Location: Silicon Valley, CA
Posts: 1,520
Default Gearing help!

Are any of you running Richey RTU motors? I have a Richey modified MT12 and I remember reading somewhere that you need to run a higher gear ratio on those motors. Any thoughts?
psycho is offline   Reply With Quote
Old 11-11-2002, 03:12 PM   #2695
Tech Master
 
Join Date: Aug 2002
Location: Melbourne, OZ
Posts: 1,059
Trader Rating: 8 (100%+)
Send a message via Skype™ to JordanC
Default

It must be a very torquey motor. It all depends on the track though!
JordanC is offline   Reply With Quote
Old 11-11-2002, 03:19 PM   #2696
Tech Addict
 
Join Date: Aug 2001
Location: Richmond, Va
Posts: 679
Default Re: Gearing help!

Quote:
Originally posted by psycho
Are any of you running Richey RTU motors? I have a Richey modified MT12 and I remember reading somewhere that you need to run a higher gear ratio on those motors. Any thoughts?
I've got a RTU. You don't really need to run taller gears, but the engine does put considerably more torque on the bottom & mid range which will create wheel spin. It all depends on your track size, clutch, clutch settings, tires, & setup. I run 17/49, 21/43 on small to medium tracks, & 18/49, 22/43 0r 42 on large tracks without any problems. Also, I'm running the centax, 30% O'Donnells, and #6 R/B plugs.
tekrsq is offline   Reply With Quote
Old 11-11-2002, 04:11 PM   #2697
Tech Master
 
psycho's Avatar
 
Join Date: Aug 2001
Location: Silicon Valley, CA
Posts: 1,520
Default

Cool. Thanx guys. I had to hang up my nitro hat for a few months, and since then, Dennis stopped doing tuning to the public. I thought I read something that indicated that it would be a good idea to go taller. Maybe that was on overgeared cars like the Yok. I have a few gears to play around with, so I'll have to do some experimenting at the track. Thanks for your gearing #'s, tekrsq. Any idea what the internal transmission ratio is on the car?
psycho is offline   Reply With Quote
Old 11-11-2002, 04:23 PM   #2698
Tech Master
 
Join Date: Aug 2002
Location: Melbourne, OZ
Posts: 1,059
Trader Rating: 8 (100%+)
Send a message via Skype™ to JordanC
Default

Quote:
I run 17/49, 21/43 on small to medium tracks, & 18/49, 22/43 0r 42 on large tracks without any problems
Sounds pretty right. The S3 must be pretty similar. I run 16/47, 20/43 on short tracks, and 18/47, 22/43 on long tracks. I also run my clutch about 1.5mm down from the thread surface
JordanC is offline   Reply With Quote
Old 11-11-2002, 04:25 PM   #2699
Tech Master
 
psycho's Avatar
 
Join Date: Aug 2001
Location: Silicon Valley, CA
Posts: 1,520
Default

Whose centax are you running? If Mugen, which spring are you running? Black or gold?
psycho is offline   Reply With Quote
Old 11-11-2002, 04:29 PM   #2700
Tech Master
 
Join Date: Aug 2002
Location: Melbourne, OZ
Posts: 1,059
Trader Rating: 8 (100%+)
Send a message via Skype™ to JordanC
Default

I use the standard mugen pro-spec clutch. I has no spring in it. The flyweights just sit in the flywheel.
JordanC is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
MUGEN MBX5R/MUGEN MBX5T PROSPEC/TRAXXAS RACE REVO Jason Halvorson R/C Items: For Sale/Trade 14 01-12-2008 10:32 AM
Mugen 5T Chassis, Mugen 46 Tooth Pinion, Associated Ride Height Gauge bretzkej R/C Items: For Sale/Trade 1 08-19-2007 06:31 PM
USA's Most Wanted FOR SALE Mugen MBX5R,Losi 8 comp, and Mugen MBX5T Prospec Truggy nobike R/C Items: For Sale/Trade 69 04-28-2007 07:45 PM
Another MTX3 prospec w lots of parts and an optional Mugen X12 w Mugen pipe Scott Fisher R/C Items: For Sale/Trade 11 11-21-2005 05:45 PM
drake xxx nt and mugen mst-1+extras......Looking for a kanai 2 or maybe mugen buggy [email protected] R/C Items: For Sale/Trade 5 06-30-2003 09:31 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 08:07 AM.


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