Mini-Z, Kyosho Mini-Z Racer, MR-03, MR-02, MA-010, Forums, News, Pictures, Parts, and Shop - Mini-ZRacer.com
Forums, Mini-Z, MiniZ, Kyosho Mini-Z, Kyosho MiniZ, Kyosho Mini-Z Racer
Mini-Z Hop-Ups, Mini-Z Parts, MiniZ Hop-Ups, MiniZ Parts, Kyosho Mini-Z Hop-Ups, Kyosho Mini-Z Parts, Kyosho MiniZ Hop-Ups, Kyosho MiniZ Parts, Kyosho Mini-Z Racer Hop-Ups, Racer Kyosho Mini-Z Parts
Old 2001.12.13, 05:32 AM   #1
RS172
Mini-Z Novice
 
Join Date: Nov 2001
Location: England.
Posts: 4
Unhappy Ball Diff Problems

I purchased a ball diff for my car, its made by Topcad (Eagle).

Im not very happy with its performance. If I loosen it off to give a better turning circle (but still not as good as the original diff) it slips loads.

If I tighten it up to get no slip the turning circle is abysmal and it still doesnt seem to accelerate as fast / feel as nippy. The gearing is identical (6T pinion) and I tried a fresh set of batteries but it still drove terrible.

I re fitted the original diff and my fun to drive Mini-Z is back.

Im driving mainly on carpet, tight and low top speed. Is the ball diff only good for high speed slippy surfaces ? Any suggestions ?

Thanks.
RS172 is offline   Reply With Quote
Old 2001.12.13, 09:13 AM   #2
mini-z
Administrator
 
mini-z's Avatar
 
Join Date: Nov 2001
Posts: 8,497
I haven't tried the TopCad diff (what color is it, it may be the same as RCRM?) but I've used the RCRM and Kyosho and from your description something is definitely wrong. How does the diff feel when you turn the wheels with your hands? Is it really smooth (much smoother than stock)? If not, it sounds like it may have some junk in it or it may be defective in some other way. Did you buy it at your LHS? If so you may want to take it in and have them look at it and see if a replacement feels any better.
mini-z is offline   Reply With Quote
Old 2001.12.13, 11:55 AM   #3
RS172
Mini-Z Novice
 
Join Date: Nov 2001
Location: England.
Posts: 4
Problem sorted.

I sat down and had a good look at the diff, because as you suggested it didnt feel quite right.

The ball race on the spur end was not sat properly / squarely in the hub. Its a very snug fit and as supplied was not sat squarely in. This meant the pressure on the diff balls was varying.

Seated the bearing properly (its a very tight fit, probably a liitle too much anodising) and it now works ok !

The unit is blue anodised.

Thanks.
RS172 is offline   Reply With Quote
Old 2001.12.13, 11:58 AM   #4
mini-z
Administrator
 
mini-z's Avatar
 
Join Date: Nov 2001
Posts: 8,497
Glad you got it sorted!
mini-z is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Ball diff changes... HaCo Mini-Z Racer MR-02 4 2007.07.15 03:26 PM
TopCad Ball Diff Problems! pkh Beginner Questions 1 2002.09.16 03:07 AM
ball diff alignment problems GME0VR Parts and Hop-ups 1 2002.08.05 12:58 PM
Weird Problems after installing ball diff ZeroSanity Parts and Hop-ups 3 2002.05.26 06:40 AM
Wheel problems with the BALL DIFF. i-WERKS Parts and Hop-ups 9 2002.03.12 05:43 PM


All times are GMT -5. The time now is 02:52 AM.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2011 Mini-ZRacer.com
Mini Inferno Sale - Up to $85 Instant Savings!
Micro-T Hop-Ups
RC18R, M18, Micro RS4, Mini-LST, TamTech-Gear, Minizilla, RC18T, RC18B, RC18MT
shop.tinyrc.com Products

more»
Tiny RC Community News
[03/22/17] MZR was on vacation, didn't... : All kidding aside, the host experienced a bit of a server meltdown last week and efforts to restore the site to a new server took longer than anticipated. The current server is temporary until - more»
[11/25/15] Did You Hear? Our Black... : Hey Racers,
We're getting started a bit early with our Black Friday sale this year.  Generally we're not supporters of retailers opening early on Thanksgiving, but in our case, we're - more»
[06/30/15] shop.tinyrc.com: Have You... : Hey All! Just a quick reminder to everyone that we post all of our shop.tinyrc.com Newletters here on the MZR Forum. If for some reason you miss them in your email inbox, you can always see the - more»
Mini-Z, Mini-Z Racer, MR-02, MA-010
M18, M18T, RC18T, Mini-LST, Mini-T, Micro RS4, XRay, 1/18, 18th scale
XMODS, XMOD, Micro Flight, ZipZaps, ZipZaps SE, Bit Char-G, MicroSizers, TTTT, Plantraco Desktop Rover, SuperSlicks, Digi Q
Mini Inferno, Mini Inferno ST, half EIGHT, 1/16, 16th scale
Epoch, Indoor Racer, 1/43, 43rd scale
E-Savage, eSavage, eZilla, e-Zilla, HPI
Robots, Bots, Bipeds, Wheeled, Manoi, Roomba, NXT, Lego, Hacking
Crawling, Crawlers, Micro, RC, Losi Mini-Rock Crawler, Duratrax Cliff Climber
Kyosho Minium, Caliber 120, Minium Forums
Mini-Z Hop-Ups, Mini-Z Parts, Mini Inferno Hop-Ups, Mini Inferno Parts, M18 Hop-Ups, M18 Parts