R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 11-08-2007, 07:39 PM   #19411
Tech Apprentice
 
hyena boy's Avatar
 
Join Date: Dec 2004
Location: Holland, MI
Posts: 81
Default

Quote:
Originally Posted by nexxus View Post
It's a nice conversion which I did when I had mine but as far as advantage? Nothing major, changes the FDR and gives you the option of wide pitch pulleys and gets rid of that silly external shaft stopper. I'd change to the MSXX / MRE steering before doing the drivetrain.
do you have part numbers for the pulleys, and build diagrams for them?

can you put the mre steering on a msx on the stock chassis?

does anyone run the 415msx on carpet with foam tires, and if so what hop ups do you suggest or need?

jeff
hyena boy is offline   Reply With Quote
Old 11-12-2007, 02:57 PM   #19412
Tech Champion
 
TryHard's Avatar
 
Join Date: Jun 2004
Location: Sydney, NSW
Posts: 5,284
Trader Rating: 4 (100%+)
Default

Hi All,

Thought I'd just share this little, well, calculator with you fellow 415ers. First up, you need Excel for it....

Basically it's a complete roll centre calculator for the MSX onwards. Select your setup options from the first page, and up pops your roll centre. I've done it for both the front and rear, and tried to include as many of the options as drop down boxes. Only ride height, and camber link shims need to be entered as numbers.

I've also set the calculations up to take into account the change in track width (even though it's miniscule), that occurs when you add or take away toe from the suspension blocks (as the angles change, so does the inner pin width). Also added in the options for use with kick-up, anti-dive, and anti squat.

Anyway, let me all know what you think... hopefully it'll prove useful to some of you.

Regards
Ed

P.S. When I get my 416... I'll be doing the same

EDIT - added an updated sheet version, added some notes, and kit setups to the calculator for reference
Attached Files
File Type: zip TRF415 Advanced RC Calc.zip (18.2 KB, 136 views)
__________________
| THard.co.uk | Xray | MuchMore |

Last edited by TryHard; 11-13-2007 at 07:21 AM.
TryHard is offline   Reply With Quote
Old 11-12-2007, 04:37 PM   #19413
Tech Initiate
 
Join Date: Jan 2007
Location: UK, Bedfordshire
Posts: 47
Default

Quote:
Originally Posted by TRF415boy View Post
No I have bought longer belts from bando, but you need to buy them from a distributor and they might not want to sell them to you. best wait to see what tamiya's doing tbh.
TRF415boy, Hi I have been looking at changing to a larger layshaft pully for a while now and have been looking at the 18t plastic pully's from the TRF501X which have the same locators as the standard MRE layshaft also wouldn't the 501X front belt fit if you convert to 37t front and rear diff pully's obviously with maybe an XRAY rear belt???
Have you any experience with interchanging these parts?
Cheers
blue247carz is offline   Reply With Quote
Old 11-12-2007, 05:07 PM   #19414
Tech Champion
 
RC MARKET's Avatar
 
Join Date: Feb 2007
Location: HK
Posts: 6,172
Trader Rating: 12 (100%+)
Default

Quote:
Originally Posted by blue247carz View Post
TRF415boy, Hi I have been looking at changing to a larger layshaft pully for a while now and have been looking at the 18t plastic pully's from the TRF501X which have the same locators as the standard MRE layshaft also wouldn't the 501X front belt fit if you convert to 37t front and rear diff pully's obviously with maybe an XRAY rear belt???
Have you any experience with interchanging these parts?
Cheers
F use MRE belt & R use XRAY rear belt can use 37T pulley ,
but center is 16T pulley.
RC MARKET is offline   Reply With Quote
Old 11-13-2007, 01:37 AM   #19415
Tech Adept
 
echo's Avatar
 
Join Date: Nov 2006
Posts: 216
Default

Quote:
Originally Posted by RC MARKET View Post
F use MRE belt & R use XRAY rear belt can use 37T pulley ,
but center is 16T pulley.
What the different between TRF415 MSX low friction (white) and MRE belt?
__________________
I am a Human Network
echo is offline   Reply With Quote
Old 11-13-2007, 01:39 AM   #19416
Tech Adept
 
echo's Avatar
 
Join Date: Nov 2006
Posts: 216
Default

I want to convert my center shaft 415msx to direct center shaft 415mre. What should i buy?


Thanks
__________________
I am a Human Network
echo is offline   Reply With Quote
Old 11-13-2007, 01:58 AM   #19417
Tech Champion
 
TryHard's Avatar
 
Join Date: Jun 2004
Location: Sydney, NSW
Posts: 5,284
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by echo View Post
What the different between TRF415 MSX low friction (white) and MRE belt?
MRE belts are slightly longer to be a better fit for the 36t pulleys. The white belts do fit, though you have to run the belt tensioners a bit looser.

For the direct centre shaft... see here
http://www.rctech.net/forum/showpost...ostcount=19401
__________________
| THard.co.uk | Xray | MuchMore |
TryHard is offline   Reply With Quote
Old 11-13-2007, 02:07 AM   #19418
Tech Addict
 
surrealmaterial's Avatar
 
Join Date: Aug 2006
Location: NSW, Australia
Posts: 651
Trader Rating: 4 (100%+)
Send a message via MSN to surrealmaterial
Default

thanks for the roll center chart TryHard! As i have no idea, what would be a good starting roll center to use on a low grip asphalt surface?

Cheers
__________________
Castle Hill Raceway
surrealmaterial is offline   Reply With Quote
Old 11-13-2007, 05:21 AM   #19419
Tech Champion
 
TryHard's Avatar
 
Join Date: Jun 2004
Location: Sydney, NSW
Posts: 5,284
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by surrealmaterial View Post
thanks for the roll center chart TryHard! As i have no idea, what would be a good starting roll center to use on a low grip asphalt surface?

Cheers
TBH, I'm not too sure myself. Was really doing it to see how my setup relates front to rear (I think the rear RC is too low atm).

I would have thought something similar to kit settings wouldn't be far wrong, so...

MSX F = 0.41mm, R = -3.08mm, Difference = 3.49mm
MSX MRE F= 0.70mm, R = -4.47mm, Difference = 5.17mm
MSXX F = 0.41mm, R = -5.44mm, Difference = 5.85mm

Something I should add... the ball studs used in all calculations are the hexheaded type, so are 1mm shorter. If your using standard studs/nuts, add 1mm to the value of the shims you put in. I'll update my previous post this evening with a sheet having that note on it.

Regards
Ed
__________________
| THard.co.uk | Xray | MuchMore |
TryHard is offline   Reply With Quote
Old 11-13-2007, 12:28 PM   #19420
Tech Champion
 
RC MARKET's Avatar
 
Join Date: Feb 2007
Location: HK
Posts: 6,172
Trader Rating: 12 (100%+)
Default

Quote:
Originally Posted by echo View Post
What the different between TRF415 MSX low friction (white) and MRE belt?
use MRE
RC MARKET is offline   Reply With Quote
Old 11-13-2007, 12:53 PM   #19421
Tech Addict
 
Jam-ehz's Avatar
 
Join Date: May 2005
Location: Toronto, Canada
Posts: 592
Trader Rating: 6 (100%+)
Send a message via ICQ to Jam-ehz
Default

Switching from the MSX center pulley to the MRE dropped 7 grams from the chassis.. I just had to drill out a bit of the bearing holder material so the bearing sat further inside.. found a 5/16" bit just fit that hole, and used a drill press to slowly and lightly take a bit out each time.. It just needs to sit in an extra millimetre, really.. I figured this was cheaper than getting the aluminum holder, AND the curved top plate that has to go on top of it.

I love the 18T/36T Widepitch setup.. sure you need Cyclone and T1 belts, but just the extra freedom of the drivetrain is great.. I was running 19T rubber with a Checkpoint, and some were surprised at the belt tension I ran.. incredibly loose, but no slippage.. very nice! I think I'd have to run a bit tighter for Foam..

I had to run diffs at the moment. I have to look into the MRE front oneway for my MSX that fits 36T pulleys for rubber, keep my diff for foams..
__________________
-=≡ Tamiya TA05 TRF415MSX F103R M-03R M-04 M-05 ≡=-
-=≡ CRC Carpet Knife 3.2 OFNA LD3 Pro Fastcats Spektrum ׀ווlı ≡=-
Jam-ehz is offline   Reply With Quote
Old 11-13-2007, 05:38 PM   #19422
Tech Master
 
snopro31's Avatar
 
Join Date: Sep 2002
Location: yorkton sask
Posts: 1,700
Trader Rating: 36 (100%+)
Default

I have a few questions and may have been answered here but i dont have time to check here everyday and i miss alot sorry.


1, with 18tooth centre and 36tooth wide pitch pully what is the internal ratio?

2, what belt is needed front and rear for this change alone?

3, with an 18tooth center and 37tooth wide pitch pully what is the internal ratio?

4, what belt front and rear is needed for the 18,37 combo?


has anyone tried this on foam tire carpet and did you see any actualy improvement ?
other then yea the car in theory should be looser do to less belt wrap. it should make it looser but did it actually make a gain you could feel or notice in your times. ?




has anyone tried to put the 4mm msx chassin on the mre car? is there a way to make the steering fit or did you just put the old steering on and how did it work?



Sorry for all the questions just want to catch up i will be able to read here every day for the next little while
snopro31 is offline   Reply With Quote
Old 11-13-2007, 07:30 PM   #19423
Tech Addict
 
Jam-ehz's Avatar
 
Join Date: May 2005
Location: Toronto, Canada
Posts: 592
Trader Rating: 6 (100%+)
Send a message via ICQ to Jam-ehz
Default

Quote:
Originally Posted by snopro31 View Post
I have a few questions and may have been answered here but i dont have time to check here everyday and i miss alot sorry.


1, with 18tooth centre and 36tooth wide pitch pully what is the internal ratio?

2, what belt is needed front and rear for this change alone?

3, with an 18tooth center and 37tooth wide pitch pully what is the internal ratio?

4, what belt front and rear is needed for the 18,37 combo?

has anyone tried this on foam tire carpet and did you see any actualy improvement ?
other then yea the car in theory should be looser do to less belt wrap. it should make it looser but did it actually make a gain you could feel or notice in your times. ?

has anyone tried to put the 4mm msx chassin on the mre car? is there a way to make the steering fit or did you just put the old steering on and how did it work?

Sorry for all the questions just want to catch up i will be able to read here every day for the next little while
1. It's exactly 2.0:1
2. HB Cyclone Front belt, XRay T1 Rear Belt
3. 2.055:1
4. Likely the same as above, but some report that it's too tight..

Unfortunately it was the first time I ran the MSX on carpet with rubber, but for me the times were phenomenally greater than what I've ever done on the TA05.. then again, 2 different chassis, different weights, but I knew that it was allowing the motor to run at full speed without hinderance. I'm sure foam would work just the same, but perhaps a bit tighter belts.. but still not as tight as you would with a 16T center..

I believe the MRE car's new steering also changed the upper deck's hole positioning.. you'll likely need to get an MSX top and bottom chassis with the standard steering rack.
__________________
-=≡ Tamiya TA05 TRF415MSX F103R M-03R M-04 M-05 ≡=-
-=≡ CRC Carpet Knife 3.2 OFNA LD3 Pro Fastcats Spektrum ׀ווlı ≡=-
Jam-ehz is offline   Reply With Quote
Old 11-13-2007, 09:52 PM   #19424
Tech Adept
 
echo's Avatar
 
Join Date: Nov 2006
Posts: 216
Default

Quote:
Originally Posted by TryHard View Post
MRE belts are slightly longer to be a better fit for the 36t pulleys. The white belts do fit, though you have to run the belt tensioners a bit looser.

For the direct centre shaft... see here
http://www.rctech.net/forum/showpost...ostcount=19401
Thanks Tryhard, so i still can use my original bearing holder (black plastic)?
__________________
I am a Human Network
echo is offline   Reply With Quote
Old 11-13-2007, 10:53 PM   #19425
Tech Addict
 
surrealmaterial's Avatar
 
Join Date: Aug 2006
Location: NSW, Australia
Posts: 651
Trader Rating: 4 (100%+)
Send a message via MSN to surrealmaterial
Default

Hey guys,

I need to get a MRE/MSXX aluminium upper brace (TA-3454404), so if anyone has one lying around or knows were i can get one let me know please.

Cheers
__________________
Castle Hill Raceway
surrealmaterial is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
TAMIYA TRF415 Xray XB8 R/C Items: For Sale/Trade 32 04-04-2008 08:50 PM
Tamiya TRF415 Crashmaster R/C Items: For Sale/Trade 19 12-13-2006 04:48 PM
Tamiya TRF415 MS NIB koabich R/C Items: For Sale/Trade 8 11-11-2005 07:28 AM
F/S Tamiya TRF415 rraden R/C Items: For Sale/Trade 20 06-10-2005 09:02 PM
Tamiya Evo IV or TRF415 TheDevil Electric On-Road 23 10-15-2004 07:27 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 12:39 AM.


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