R/C Tech Forums

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

Like Tree17Likes
Reply
 
Thread Tools Search this Thread
Old 05-14-2002, 11:36 AM   #256
dtm
Tech Champion
 
dtm's Avatar
 
Join Date: Aug 2001
Location: HKG
Posts: 7,551
Send a message via ICQ to dtm
Default

In an attempt to get a 'smoother' diff I have now tried the thrust bearing from the Kawada SV10 and the washer/ball arrangement from the Yokomo YR4. No difference......I will now settle for an 'almost' smooth diff!!!
dtm is offline   Reply With Quote
Old 05-14-2002, 11:49 AM   #257
Regional Moderator
 
Darkseid's Avatar
 
Join Date: Aug 2001
Location: At my computer, duh...
Posts: 9,033
Trader Rating: 8 (100%+)
Default

Mine are reasonably smooth. Its just that with all my sedans, I'm used to holding down the wheels giving it full throttle and not having any slip, but still having perfectly smooth diffs. These diffs are pretty smooth, but when I test them they slip at about mid-throttle. This just doesn't feel right, ya know?

O'well, I'll try cleaning everything, and thread locking or gluing the diff rings in place once I take the car apart again.
__________________
TLR 22...Tamiya F104...
Darkseid is offline   Reply With Quote
Old 05-14-2002, 11:53 AM   #258
Regional Moderator
 
Darkseid's Avatar
 
Join Date: Aug 2001
Location: At my computer, duh...
Posts: 9,033
Trader Rating: 8 (100%+)
Default

Well after looking at the instruction again. I think I see where I might have messed up. The diagram makes it look like you need to grease both sides of the diff rings. I remember that I thought that was odd, but I can't remember if I actually did it anyway. If I did, that would account for why I can't get it to stop slipping. I see that I'm about to end up having to take the diffs out. I hope I don't have to take the whole car apart just to reach them.
__________________
TLR 22...Tamiya F104...
Darkseid is offline   Reply With Quote
Old 05-14-2002, 12:12 PM   #259
Tech Champion
 
rc-zombies's Avatar
 
Join Date: Aug 2001
Location: NorCal. Napa area
Posts: 7,212
Trader Rating: 8 (100%+)
Default

For a smoother diff gear mesh apply some Pedro's IceWax. It's a dry film lubricant. Same stuff I use on my TC3. I read somewhere Mark Pavidis uses it on his car as well.

If you have extra wheel bearing from you F103. You can use them on the steering post instead of the bushings.

Last edited by rc-zombies; 05-14-2002 at 12:19 PM.
rc-zombies is offline   Reply With Quote
Old 05-14-2002, 01:53 PM   #260
Tech Addict
 
Barry White's Avatar
 
Join Date: May 2002
Location: HEAVEN
Posts: 720
Default

Where can you get this Pedro's IceWax?
Barry White is offline   Reply With Quote
Old 05-14-2002, 02:02 PM   #261
Tech Champion
 
rc-zombies's Avatar
 
Join Date: Aug 2001
Location: NorCal. Napa area
Posts: 7,212
Trader Rating: 8 (100%+)
Default

Quote:
Originally posted by Afropussy
Where can you get this Pedro's IceWax?
At most bike shops. There are other brands available too if they don't have the Pedro's. These are basically used for the bike chain to keep them lubricated and the same time removes dirt and grime off the chains.
rc-zombies is offline   Reply With Quote
Old 05-14-2002, 02:16 PM   #262
Regional Moderator
 
Darkseid's Avatar
 
Join Date: Aug 2001
Location: At my computer, duh...
Posts: 9,033
Trader Rating: 8 (100%+)
Default

Man, I just rebuilt both diffs. I cleaned everything, glued the rings, and tightened the diff to the point were I couldn't turn the diff gear no matter what I did. And the results are..........................

.................................................. .................................................. ..

........exactly the same as before! When I hold the front or rear wheels down and give throttle, the diffs still slip at about half throttle with a standard stock motor.

Jezzzzzzzzz.......I'm just going to assume at this point that with all four wheels down, the torque of the motor isn't enough to cause the diffs to slip. So I'll just run it like it is. If the diffs melt, then I'll know something is wrong.
__________________
TLR 22...Tamiya F104...
Darkseid is offline   Reply With Quote
Old 05-14-2002, 02:20 PM   #263
Tech Master
 
psycho's Avatar
 
Join Date: Aug 2001
Location: Silicon Valley, CA
Posts: 1,520
Default

Darkseid

As long as they don't slip on the track, you should be fine. Go full throttle from a standstill and see if they slip. If not, you're all good!
psycho is offline   Reply With Quote
Old 05-14-2002, 02:27 PM   #264
Regional Moderator
 
Darkseid's Avatar
 
Join Date: Aug 2001
Location: At my computer, duh...
Posts: 9,033
Trader Rating: 8 (100%+)
Default

psycho: thats the thing. I noticed that the F201 drive train has almost the same pitch as a slipping diff. Now is that a pain in the @ss or what. I'll have to get down close to the car and see what its doing. I'll test it out on some high traction carpet or something and see if I hear or visually notice the diffs slipping.

Heres hoping I don't run the car into my own face or something while I'm checking! LOL!
__________________
TLR 22...Tamiya F104...
Darkseid is offline   Reply With Quote
Old 05-14-2002, 03:05 PM   #265
Regional Moderator
 
Darkseid's Avatar
 
Join Date: Aug 2001
Location: At my computer, duh...
Posts: 9,033
Trader Rating: 8 (100%+)
Default

Well I just tested out the car on some high traction carpet. The diffs definitely aren't slipping!!! Thank goodness!

The car is shooting off from a dead stop like a bullet.

I'll check it out this weekend and see how it does on the track. But, everything looks good right now.
__________________
TLR 22...Tamiya F104...
Darkseid is offline   Reply With Quote
Old 05-14-2002, 04:59 PM   #266
Tech Master
 
psycho's Avatar
 
Join Date: Aug 2001
Location: Silicon Valley, CA
Posts: 1,520
Default

Cool. I'm glad you got it sorted out. Hopefully I get my parts today or tomorrow so I can get mine back together.
psycho is offline   Reply With Quote
Old 05-14-2002, 07:11 PM   #267
Tech Champion
 
Manticore's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Location: Heaven
Posts: 9,999
Default

There is a way that I use and havent failed me so far on diff rings which arent keyed.

Use rubber cement. Those cement used by shoemender. Or the one you used to prepare your foam donut onto your rim for 1/12 cars. They are the same thing basically.

Apply a very thin layer of glue between the diff ring and outdrive and put them together before the glue dry out. Assemble the diff parts together as according to the manual but do not use excessive force on the adjustment screw. DO NOT ADJUST the diff but let the diff sits overnight to let the glue drys out.

As for the outdrive design, I am not sure if the original design of threading the other half of the outdrive is right but according to my experience the chance of not getting loose screw is rare unless you locktite the screw to the other half of the outdrive.

I will see what I will do to the diff when I start to build the kit.


Manticore is offline   Reply With Quote
Old 05-14-2002, 09:50 PM   #268
dtm
Tech Champion
 
dtm's Avatar
 
Join Date: Aug 2001
Location: HKG
Posts: 7,551
Send a message via ICQ to dtm
Default

Quote:
Originally posted by Manticore

As for the outdrive design, I am not sure if the original design of threading the other half of the outdrive is right but according to my experience the chance of not getting loose screw is rare unless you locktite the screw to the other half of the outdrive.

I will see what I will do to the diff when I start to build the kit.


I now recall that the first time I came across the dual screw locking on the diff it was on the Tamiya Dyna Storm....I had no problems with it back then!!

The diffs are actually OK smooth. Maybe I'm just being a perfectionist!! What I mean is that when I hold the outdrivers and 'slowly' turn them I can feel a 'slight' notching as the balls rotate. When it is in the car and turning the wheels, I have not doubt things will appear very smooth!!

The grease on the backside of the plates did not really work for me. It made things even worse. In other designs that I have seen which do use grease on the backside, the outdrivers have always had a groove cutout...none on the F201!!

stick those plates down....by fair means for foul!!! It made a hell of a big difference in terms of how loose you can go before it started slipping!!!!!
dtm is offline   Reply With Quote
Old 05-14-2002, 09:56 PM   #269
Tech Champion
 
Manticore's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Location: Heaven
Posts: 9,999
Default

Quote:
Originally posted by dtm


I now recall that the first time I came across the dual screw locking on the diff it was on the Tamiya Dyna Storm....I had no problems with it back then!!

The diffs are actually OK smooth. Maybe I'm just being a perfectionist!! What I mean is that when I hold the outdrivers and 'slowly' turn them I can feel a 'slight' notching as the balls rotate. When it is in the car and turning the wheels, I have not doubt things will appear very smooth!!

The grease on the backside of the plates did not really work for me. It made things even worse. In other designs that I have seen which do use grease on the backside, the outdrivers have always had a groove cutout...none on the F201!!

stick those plates down....by fair means for foul!!! It made a hell of a big difference in terms of how loose you can go before it started slipping!!!!!
Tell me how it works before I start to build the kit !
Manticore is offline   Reply With Quote
Old 05-14-2002, 11:06 PM   #270
dtm
Tech Champion
 
dtm's Avatar
 
Join Date: Aug 2001
Location: HKG
Posts: 7,551
Send a message via ICQ to dtm
Default

Quote:
Originally posted by Manticore


Tell me how it works before I start to build the kit !
I'm going to do more 'experimenting' tonight......hopefully I won't wear out the diff before it goes in the car!!!!!
dtm is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tamiya F201 scarymonster Northwest Racers 0 03-20-2007 09:14 PM
Tamiya F201 Tyler O. R/C Items: Wanted to Buy 9 10-30-2006 01:35 PM
FS: Tamiya F201 with Hop-ups! Denso R/C Items: For Sale/Trade 8 05-03-2005 08:16 PM
Tamiya 414m , Tamiya F201 for Sale Apexman R/C Items: For Sale/Trade 1 04-30-2005 11:45 AM
Tamiya F201 with Hop-ups rayhuang R/C Items: For Sale/Trade 29 02-01-2005 11:59 AM



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 04:31 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