R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 11-18-2005, 07:25 PM   #2191
Tech Champion
 
Slotmachine's Avatar
 
Join Date: May 2003
Location: Germantown Maryland
Posts: 5,694
Trader Rating: 4 (100%+)
Send a message via MSN to Slotmachine
Default

Quote:
Originally Posted by rcKenon.com
new arrive optional parts of MTX4

Kenon Hobby www.rckenon.com
I`m surprised that no one but me has thought of this! Just shorten the shock tower - body mount piece where the posts go and it may not break so easy! I don't really see the advantage to having the posts so far apart anyway, the old car never had this problem!
__________________
HOBBYWING NORTH AMERICA /FALCON SEKIDO/ TEKNO RC TEAM/VBC Racing America/VP-PRO RACING TIRES/2010 R.O.A.R. VTA National Champion Driving a T2R PRO/NANO-TECH Batteries Paul Rush
Slotmachine is offline   Reply With Quote
Old 11-18-2005, 07:31 PM   #2192
Tech Elite
 
Join Date: Aug 2003
Location: Henderson, NV
Posts: 4,148
Trader Rating: 28 (100%+)
Send a message via AIM to Scott Fisher
Default

The advantage of the body posts being farther apart is the way the downforce of the body is transferred to the car. I know that the downforce still has to go down through the same parts to get to the chassis, but it is kinda like having a wider wheelbase. Just a little more stability.
You are right that moving them more central should cause less breakage of the shock tower due to less leverage. Go ahead and get two rear shock towers and glue them together.
__________________
| Capricorn | Ybslow | Proline-Protoform | Johnny Bravo Racing | Desoto Racing | Murnan Modified | Matrix Tires | Powermaster Fuel |
Scott Fisher is offline   Reply With Quote
Old 11-18-2005, 08:01 PM   #2193
Tech Champion
 
asw7576's Avatar
 
Join Date: Sep 2004
Posts: 5,792
Default

Quote:
Originally Posted by Scott Fisher
.......... Go ahead and get two rear shock towers and glue them together.
That what I did. It's very stiff and strong now.
asw7576 is offline   Reply With Quote
Old 11-18-2005, 08:07 PM   #2194
Tech Elite
 
Join Date: Aug 2003
Location: Henderson, NV
Posts: 4,148
Trader Rating: 28 (100%+)
Send a message via AIM to Scott Fisher
Default

I forgot to suggest as well to the people using a doubled up shock tower. IF you car about the shock angle and body mount position you can do the following. Glue the extra shock tower on the back front side ( the side closer to the front of the car). Cut off the bottom where it mounts to the bulkhead and cut off the edges where the body mounts go. This will keep everything in the original position. If you just glue two together, you can put some spacers on the lower shock mount position to ge the angle straight.
__________________
| Capricorn | Ybslow | Proline-Protoform | Johnny Bravo Racing | Desoto Racing | Murnan Modified | Matrix Tires | Powermaster Fuel |
Scott Fisher is offline   Reply With Quote
Old 11-18-2005, 08:18 PM   #2195
Tech Champion
 
asw7576's Avatar
 
Join Date: Sep 2004
Posts: 5,792
Default

Quote:
Originally Posted by Scott Fisher
....... If you just glue two together, you can put some spacers on the lower shock mount position to ge the angle straight.
Yeah, you're right...... but there are 2 ways to make the shock straight without cutting the carbon fible shock tower.
1. Use thinner spacer at the CF holes.
2. Add spacer at lower suspension arms where the shock end meet.
asw7576 is offline   Reply With Quote
Old 11-18-2005, 08:50 PM   #2196
Tech Elite
 
Join Date: Aug 2003
Location: Henderson, NV
Posts: 4,148
Trader Rating: 28 (100%+)
Send a message via AIM to Scott Fisher
Default

If you use a thinner spacer at the upper shock mount, the shock will rub on the shock tower. That is why I didn't suggest doing that. I know there is a little bit of room to use a thinner spacer, but not much.
__________________
| Capricorn | Ybslow | Proline-Protoform | Johnny Bravo Racing | Desoto Racing | Murnan Modified | Matrix Tires | Powermaster Fuel |
Scott Fisher is offline   Reply With Quote
Old 11-19-2005, 02:57 AM   #2197
Tech Elite
 
Sow&Steady's Avatar
 
Join Date: Dec 2003
Location: Va Va Voom!
Posts: 4,104
Default

Quote:
Originally Posted by ogreasurada
Just got my MTX4 today! Is there any part I should pay extra attention to while building? Any tip or advice will be appreciated. THX.
I wrote some stuff when I was building mine. Its in 4 parts and ends with a video of the car being driven. Go read it here.
__________________
http://3hobby.net REVISITED V2 - Its on steroids!
https://www.facebook.com/ssteady
Sow&Steady is offline   Reply With Quote
Old 11-19-2005, 05:24 AM   #2198
Tech Champion
 
asw7576's Avatar
 
Join Date: Sep 2004
Posts: 5,792
Default

Quote:
Originally Posted by Scott Fisher
If you use a thinner spacer at the upper shock mount, the shock will rub on the shock tower. That is why I didn't suggest doing that. I know there is a little bit of room to use a thinner spacer, but not much.
I just come back from Las Vegas last week, great hotels and great shows, really love Bellagio's water fountain shows.
asw7576 is offline   Reply With Quote
Old 11-19-2005, 06:45 AM   #2199
Tech Adept
 
Join Date: Mar 2005
Location: Alabama
Posts: 187
Send a message via ICQ to Grasshopperr Send a message via AIM to Grasshopperr Send a message via Yahoo to Grasshopperr
Default

Does the 4 handle better than the 3? I know I cant wait till christmas.
Grasshopperr is offline   Reply With Quote
Old 11-19-2005, 08:29 AM   #2200
Tech Champion
 
asw7576's Avatar
 
Join Date: Sep 2004
Posts: 5,792
Default

Quote:
Originally Posted by Grasshopperr
Does the 4 handle better than the 3? I know I cant wait till christmas.
I hope you can wait till christmas MTX4 have higher cornering speed and love tight corners.
asw7576 is offline   Reply With Quote
Old 11-19-2005, 01:42 PM   #2201
Tech Elite
 
rcfoolz's Avatar
 
Join Date: Sep 2003
Posts: 3,327
Trader Rating: 22 (100%+)
Send a message via Yahoo to rcfoolz
Default 4 Hard race weekends: the results

I've just finnished racing 4 weekends in a row with the MTX-4. The results are good, I've finnished 1st in 2 of the races, took a bump from the B to the A in another finnishing 4th and took 5th in the B at the FL state race.

Now for the repair bill.....
New Front and rear shock towers. (I make them so......FREEBY)
New Chassis plate......Was warped, but don't remember having any major hits.
Parts replaced....Front side pully 24 tooth....hanger wire wore it down.
2 rear bearings....on the upright
1 cracked front upright.

Overall, the cost of running the car is less than it was for my MTX3 other than the chassis.. I think the car is as durable as the 3, but has a bennefit of being a faster car.

I am still puzzled on the chassis. It warped at the two screws where the rear support for the upper deck and just in front of the engine. Looking closer, the battery tray and the two screw holes for the center bulkhead are so close that this might be an issue.

The stock rear shock tower was not broke, but had a warp to it. I believe that the carbon fiber used is componet grade and not the cross lay for better rigidity. The front shock tower was also warped.

After pressing the chassis back to shape, I am going to have it anodozed so I won't confuse it with any others, and I think that I am going to make some changes to the chassis since it is warped, the set screws for setting droop/downstops cut into the chassis, so I am going to drill and tap that area and put a 3mm screw at that point. Being steel, it will be harder than the aluminum chassis and should prove to wear better.

Also, I am looking at a way to build a carbon fiber piece to stiffen the chassis on the exhaust side of the engine. It would house the belt tensioner and attatch to the rear bulkhead. This might prove to be another cure for the chassis flex/warp.
__________________
Am I going back racing?...Hmmm.. Not anytime soon... But soon enough.
rcfoolz is offline   Reply With Quote
Old 11-19-2005, 03:13 PM   #2202
Tech Master
 
rcracerdude's Avatar
 
Join Date: May 2004
Location: AZ
Posts: 576
Send a message via Yahoo to rcracerdude
Default

Quote:
Originally Posted by rcfoolz
.....Also, I am looking at a way to build a carbon fiber piece to stiffen the chassis on the exhaust side of the engine. It would house the belt tensioner and attatch to the rear bulkhead. This might prove to be another cure for the chassis flex/warp.
I would like to see that...
__________________
Ken Gutierrez

derbybrosracing.com
rcracerdude is offline   Reply With Quote
Old 11-19-2005, 06:00 PM   #2203
Tech Regular
 
Join Date: Oct 2004
Posts: 327
Trader Rating: 3 (100%+)
Default

Anyone know the weight of this car in race trim?
reddishdsb is offline   Reply With Quote
Old 11-19-2005, 06:20 PM   #2204
Tech Elite
 
rcfoolz's Avatar
 
Join Date: Sep 2003
Posts: 3,327
Trader Rating: 22 (100%+)
Send a message via Yahoo to rcfoolz
Default

In race trim, with body, no fuel, I am sitting at 1728grams. That is with either the Dodge stratus, Caddy, Mazda 6, or the Alfa. I don't see the need to run the titanium hinge pins, front shaft, titanium screws, or change over to the lightweight hubs. These items would lower the weight of the car 32 grams, and I have a few other things I could do to get the weight down another 18grams, so the car can be made very light without spending a lot of money.
__________________
Am I going back racing?...Hmmm.. Not anytime soon... But soon enough.
rcfoolz is offline   Reply With Quote
Old 11-19-2005, 06:37 PM   #2205
Tech Elite
 
Join Date: Aug 2003
Location: Henderson, NV
Posts: 4,148
Trader Rating: 28 (100%+)
Send a message via AIM to Scott Fisher
Default

There are a few reasons to continue to lighten the car below the limit. First on the ti 2-speed shaft and hubs you are reducing rotating mass. The reason for the ti hinge pins (at least upper pins) and the upper ti screw kit is to reduce weight up high in the car. Even if you then have ot add weight to make it legal you can then add it to the chassis down low.
__________________
| Capricorn | Ybslow | Proline-Protoform | Johnny Bravo Racing | Desoto Racing | Murnan Modified | Matrix Tires | Powermaster Fuel |
Scott Fisher 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 12:53 AM.


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