R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 10-01-2009, 02:59 AM   #3331
Tech Adept
 
Join Date: Mar 2003
Location: Tallinn, Estonia
Posts: 226
Default

Quote:
Originally Posted by gentleman81 View Post
my car has an issue with the brake shaft that presses on the brake pads, works its way up out of its home, to the point where the top bearing comes out of the housing. after that i am riding with no brakes. any help
The aluminium shaft wears out where it contacts the lower edge of the brake pad, allowing it to raise up too much. Change the shaft and you're back in business.
olev is offline   Reply With Quote
Old 10-01-2009, 07:50 AM   #3332
Tech Elite
 
JLock's Avatar
 
Join Date: Nov 2001
Location: North Dallas, TX
Posts: 4,455
Trader Rating: 3 (100%+)
Default

Quote:
Originally Posted by Zacharopoulos View Post
hey guys

i am also having problems with my 2nd gear!! I stip the 2nd gear spurs the one after the other.

Any suggestions??

Some of the things that wouldn't be the "fix" is

1. Gear mesh (always right)
2. New pinions
3. 2nd gear housing ball bearing
4. bulkheads and no overtighten screws
5. i also use 4mm chassis.


any suggestions??
As a follow-up, my second gear stripping problem was contributed to the bearing in the two-speed housing. The bearing that Mugen uses is a cheap, metal-shielded one instead of a rubber-shielded one. I was able to press the bearing out of the housing (without damaging it) and press a better one into it (if you can find a ceramic bearing, use it). The bearing size is 6mm x 13mm x 5mm. Acer or Boca would be good replacement bearings as well. Just be careful pressing it back into the housing as not to damage the bearing or housing. Just lightly oil it after a few runs and this may solve a lot of the stripping problems that some are having (that aren't chassis-flex related).

Juan
JLock is offline   Reply With Quote
Old 10-02-2009, 08:24 AM   #3333
Tech Fanatic
 
Seisick's Avatar
 
Join Date: May 2004
Posts: 845
Default

make sure theres no flex in the chasis due to a loose screw and the most important
align the gear mesh with just the 2 speed making sure theres full contact and
give as little gap as possible between the 2 speed housing and the 2 speed shoes (i use hpi 3.2mmm set screws to make sure they'll never unscrew even after readjustment)

good luck
__________________
HobbymaniA
GoT MuGeN?
Seisick is offline   Reply With Quote
Old 10-02-2009, 10:31 AM   #3334
Tech Elite
 
JayL's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2006
Location: Ca
Posts: 2,880
Default

agreed!
for me two things matter most re gear stripping 2nd:

1st, as said, .3mm gap between shoes and bell in 2nd housing

2nd never run more than .3mm clutch play or the clutch bell will hit the 2nd housing
JayL is offline   Reply With Quote
Old 10-03-2009, 07:27 AM   #3335
Tech Elite
 
Kodak Hodak's Avatar
 
Join Date: Nov 2006
Location: South Australia, Australia
Posts: 2,159
Trader Rating: 10 (100%+)
Send a message via MSN to Kodak Hodak Send a message via Yahoo to Kodak Hodak Send a message via Skype™ to Kodak Hodak
Default

Hey Guys, weighed my car today with tires on no fuel - 1750g is this a good weight - or can i reduce more somewhere?
__________________
★ DORMANT RC RACER ★
Kodak Hodak is offline   Reply With Quote
Old 10-03-2009, 07:31 AM   #3336
Tech Champion
 
GMartinez's Avatar
 
Join Date: Dec 2004
Location: Sunshine State
Posts: 8,161
Trader Rating: 85 (100%+)
Default

Quote:
Originally Posted by Kodak Hodak View Post
Hey Guys, weighed my car today with tires on no fuel - 1750g is this a good weight - or can i reduce more somewhere?
what tire size is currently on it now
__________________
www.fullthrottlercraceway.com
Home of The U.S. World Nitro Cup 2013,2014,2015,2016
2014 Roar Electric Nationals, IFMAR ISTC Worlds, 2015 Roar Fuel Nationals
2017 U.S.World Nitro Cup Nov 29th - Dec 3rd
U.S.Open Fuel Championship Returning soon
GMartinez is offline   Reply With Quote
Old 10-03-2009, 08:25 AM   #3337
Tech Elite
 
Kodak Hodak's Avatar
 
Join Date: Nov 2006
Location: South Australia, Australia
Posts: 2,159
Trader Rating: 10 (100%+)
Send a message via MSN to Kodak Hodak Send a message via Yahoo to Kodak Hodak Send a message via Skype™ to Kodak Hodak
Default

the front and rear tires that i weighed are at 60mm.... using ATS tires on a serpant wheel
__________________
★ DORMANT RC RACER ★
Kodak Hodak is offline   Reply With Quote
Old 10-03-2009, 11:13 PM   #3338
Tech Addict
 
keavze's Avatar
 
Join Date: May 2007
Posts: 590
Default

Quote:
Originally Posted by Kodak Hodak View Post
Hey Guys, weighed my car today with tires on no fuel - 1750g is this a good weight - or can i reduce more somewhere?
this is a very good weight (with shell and transponder hopefully), bearing in mind the legal min weight is 1725g race ready.
__________________
>>> the "SNAKE" doesn't bite; it STINGS! <<<
keavze is offline   Reply With Quote
Old 10-04-2009, 11:17 AM   #3339
Tech Elite
 
JLock's Avatar
 
Join Date: Nov 2001
Location: North Dallas, TX
Posts: 4,455
Trader Rating: 3 (100%+)
Default

Quote:
Originally Posted by Kodak Hodak View Post
Hey Guys, weighed my car today with tires on no fuel - 1750g is this a good weight - or can i reduce more somewhere?
For IFMAR/ROAR racing, your car is perfect weight, in my opinion. It is better to be a little bit more above weight than to have your car right near the limit and be disqualified from a race due to your car coming in underweight for some unforseen reason. That is about where my car weighs in.
JLock is offline   Reply With Quote
Old 10-04-2009, 09:23 PM   #3340
Tech Elite
 
Kodak Hodak's Avatar
 
Join Date: Nov 2006
Location: South Australia, Australia
Posts: 2,159
Trader Rating: 10 (100%+)
Send a message via MSN to Kodak Hodak Send a message via Yahoo to Kodak Hodak Send a message via Skype™ to Kodak Hodak
Default

one thing i have done to lighten car i the following:


Titanium Screw kit top deck only
Drilled out Spurs for light weight
Light Weight Pinions - Alloy Standard
Light weight bell Housing
minimal Paint - meaning - one colour, no decals


I guess ever bit you lighten can help for sure!
__________________
★ DORMANT RC RACER ★
Kodak Hodak is offline   Reply With Quote
Old 10-05-2009, 11:02 AM   #3341
Tech Regular
 
Join Date: Mar 2008
Location: Richmond, VA
Posts: 405
Trader Rating: 11 (100%+)
Default

The weight looks good, the only problem I see is after a race it could be under weight. If it is a high wear track for the tires. I know most guys like to put just plastic wheels (no tires or foam on wheel) and get the weight close. That way you know you will not go under for any reason.
__________________
VORRA; www.RVAHobbies.com; www.ashfordhobby.com; www.tqwire.com
bgrick is offline   Reply With Quote
Old 10-05-2009, 02:14 PM   #3342
Tech Fanatic
 
Seisick's Avatar
 
Join Date: May 2004
Posts: 845
Default

1725g with three tires is the way to go, that way you will never get under weight,
__________________
HobbymaniA
GoT MuGeN?
Seisick is offline   Reply With Quote
Old 10-13-2009, 04:24 PM   #3343
Tech Apprentice
 
MTX4JR's Avatar
 
Join Date: Dec 2007
Location: Ft Lauderdale Fl
Posts: 56
Default

Can anyone tell where is a good supplier for mtx4 and R parts i live in Florida and its getting harder and harder to get parts. Also any efforts to contact Mugen via e-mail have been a failure.


2nd What can be done to lighten the drive train on the car?

Thanks to everyone.
__________________
Either go Fast or go Home.

Car: Mtx4
Radio Futaba 3pk
Engine: Novarossi / Os Speed Tunned.
Fuel: Maxy / O' Donnell
MTX4JR is offline   Reply With Quote
Old 10-13-2009, 05:32 PM   #3344
Tech Elite
 
lil-bump's Avatar
 
Join Date: Aug 2006
Location: The Cold Great Lakes
Posts: 2,963
Trader Rating: 83 (100%+)
Default

Quote:
Originally Posted by MTX4JR View Post
Can anyone tell where is a good supplier for mtx4 and R parts i live in Florida and its getting harder and harder to get parts. Also any efforts to contact Mugen via e-mail have been a failure.


2nd What can be done to lighten the drive train on the car?

Thanks to everyone.

For drive train parts I would look no further than YB Slow. For standard parts check-out Ashford Hobbies
__________________
Elliott Hart
Serpent America
Desoto Racing Team
Chicky fan club member #9
One Eighth Racers of Toledo
lil-bump is offline   Reply With Quote
Old 10-13-2009, 05:42 PM   #3345
Tech Master
 
BLKNOTCH's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2007
Location: Ajax, Ontario Canada
Posts: 1,024
Trader Rating: 10 (100%+)
Send a message via MSN to BLKNOTCH
Default

Quote:
Originally Posted by MTX4JR View Post
Can anyone tell where is a good supplier for mtx4 and R parts i live in Florida and its getting harder and harder to get parts. Also any efforts to contact Mugen via e-mail have been a failure.


2nd What can be done to lighten the drive train on the car?

Thanks to everyone.
I have been getting all my parts for my Mugen at these three places:

http://www.fxrhobby.com/catalog/inde...cb51e8dd9a69a4

http://www.rc-mushroom.com/index.php?cPath=36_260

and then when all else fails Ebay is your friend
__________________
HB/HPI Racing | Morgan Fuels | HOBBYWING | Airtronics | REDS Racing | HRP | Hobby Revolution | Team N.E.R.D.
BLKNOTCH 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 03:42 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