R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 01-17-2006, 05:42 PM   #1
Tech Master
 
captain america's Avatar
 
Join Date: Nov 2005
Posts: 1,435
Trader Rating: 9 (100%+)
Unhappy Kyosho lazer ZX-5 problems.

Hi all.

I've just started assembling my ZX-5, and I barely got into the second step of the manual before I hit a snag, and I was hoping that someone could possibly shed some light on this matter.

In step 2 of the manual, you have the assembly for the front one-way, which is precisely what i'd like to install in the front. Here's the problem: part 4 (main diff gear) is supposed to fit over part 56, and should then be attached with 4 small screws... But the opening of the main diff gear will not allow it to fit over part 56 as the manual suggests. Does the center of the front gear need to be dremeled-out to make it fit, or am I going about this the wrong way? (See pics below.)





Also, when assembling the rear diff, I noticed that the diff ball pressure plates are quite small in diameter--to the point where they only cover about 3/5 of the diff balls. Is this normal? What's more is that right up until the diff is tightened, the center gear seems to "float" between the metal assembly parts, and there's nothing to seemingly keep the plastic gear centered. If someone could please tell me what I'm doing wrong, or offer tips, I'd greatly appreciate it.

captain america is offline   Reply With Quote
Old 01-17-2006, 06:51 PM   #2
Tech Elite
 
Turbo Joe's Avatar
 
Join Date: Nov 2003
Location: Corona, CA
Posts: 4,878
Trader Rating: 41 (100%+)
Default

Uuuuhhh...dude....there are three gears in the kit. For the one-way or the spool, you use the gear with the bigger hole. Ball diffs use the gears with the smaller hole.



Also...you should really stick to posting in the proper thread (Kyosho electric offroad ). You'll get more help and probably faster. Don't go starting a new thread every time you have a question.
Turbo Joe is offline   Reply With Quote
Old 01-17-2006, 07:07 PM   #3
Tech Master
 
captain america's Avatar
 
Join Date: Nov 2005
Posts: 1,435
Trader Rating: 9 (100%+)
Default

Hi Joe.

Yes, I was going to post in the Kyosho offroad forum, but it's already horribly long as it is (with several different topics overlapping.) I had already asked a question in that thread previously, and it just got lost in the shuffle.

As per the pic you posted, there is one gear with a noticeably larger center diameter... All three of the diff gears in my blister pack are exactly the same... Well at least I can be content knowing that the screw-up is kyosho's and not mine. Still annoying as hell though.
captain america is offline   Reply With Quote
Old 01-17-2006, 07:32 PM   #4
Tech Master
 
Fabulous's Avatar
 
Join Date: Jun 2004
Location: WI.
Posts: 1,138
Trader Rating: 42 (100%+)
Default

Captain America, You indicated " What's more is that right up until the diff is tightened, the center gear seems to "float" between the metal assembly parts, and there's nothing to seemingly keep the plastic gear centered." I beleive this is the gear that had a larger center hole. This is the gear that is used for the oneway.
Fabulous is offline   Reply With Quote
Old 01-17-2006, 07:45 PM   #5
Tech Elite
 
cornerspeed's Avatar
 
Join Date: Sep 2001
Location: San Diego
Posts: 2,388
Default

That's what I was thinking. Take the rear diff apart to see if that is your missing one-way gear with the larger center hole.
__________________
Donny Vinkemulder
TLR Driver
TLR 8ight 3.0 - NovarossiUSA - Spektrum DX3R Pro - Losi Nitrotane VP 30% - Losi Lipo Batteries - Proline Tires - DE Racing - EKD Paint
--- Special thanks to: Dyno, Adam, Todd, and Kevin. Horizon Hobby
cornerspeed is offline   Reply With Quote
Old 01-17-2006, 09:08 PM   #6
Tech Master
 
captain america's Avatar
 
Join Date: Nov 2005
Posts: 1,435
Trader Rating: 9 (100%+)
Default

Hi Fabulous. D'oh, quite right... My bad. This effectively alleviates both problems. I could have sworn the 3 gears looked identical.

On a similar note, I've heard a few people mention potential gear-stripping on the spur gear shaft where the bevel gear meets the diff. I noticed that there's a good 2mm play between the bevel and the collar with the bearing... I'm wondering if it might be best to add a few washers to lessen the slop?
captain america is offline   Reply With Quote
Old 01-17-2006, 09:13 PM   #7
Tech Elite
 
cornerspeed's Avatar
 
Join Date: Sep 2001
Location: San Diego
Posts: 2,388
Default

Is that after fully assembled? There should not be any back-and-forward play. Maybe a half a mill at the most. Recheck your assembly. Mine does not have this excessive play.
__________________
Donny Vinkemulder
TLR Driver
TLR 8ight 3.0 - NovarossiUSA - Spektrum DX3R Pro - Losi Nitrotane VP 30% - Losi Lipo Batteries - Proline Tires - DE Racing - EKD Paint
--- Special thanks to: Dyno, Adam, Todd, and Kevin. Horizon Hobby
cornerspeed is offline   Reply With Quote
Old 01-17-2006, 09:29 PM   #8
Tech Master
 
Scrad's Avatar
 
Join Date: Feb 2003
Location: Plover, WI
Posts: 1,510
Trader Rating: 15 (100%+)
Default

We covered the shaft play in the Kyosho offroad thread. Mine had a lot of play also. I (think) I just put an extra shim on the side of the slipper plate under the black plastic piece that holds the bearing. I'm not positive where I put it but I know for a fact I did put a shim on there somewhere.
Scrad is offline   Reply With Quote
Old 01-17-2006, 09:38 PM   #9
Tech Master
 
rmargiotta's Avatar
 
Join Date: Aug 2004
Location: 210
Posts: 1,379
Trader Rating: 57 (100%+)
Send a message via AIM to rmargiotta
Default

The play only exists when the slipper assembly is out of the car, this is NOTHING to worry about, when the car is built, this is not a problem.
__________________
Sponsors:
- Cold Hard-Earned Cash Money -
rmargiotta is offline   Reply With Quote
Old 01-17-2006, 09:48 PM   #10
Tech Addict
 
Crim3Wav3's Avatar
 
Join Date: Dec 2005
Location: MasshoL3
Posts: 715
Trader Rating: 8 (100%+)
Default

also, the screws about which you speak are labeled correctly in the manual, however, the screw shown in the CAD drawing are not the correct screw...the manual shows a M2x? philips but the correct screw is a smaller head screw...you'll find it in one of the bags...so, essentially, the Kyosho drafter screwed up and put the wrong screw in the drawing...

good luck..

Also, dont use the crappy diff lube included in the kit....use associated.

-dont tighten the diff too tight right away, or you'll flat-spot the balls.
-make sure you shim the diffs correctly (i.e. tight, but not too tight)...if you dont, you'll strip the ring and pinion gears in the bulheads....especially off of jumps.
Crim3Wav3 is offline   Reply With Quote
Old 01-17-2006, 09:49 PM   #11
Tech Master
 
Scrad's Avatar
 
Join Date: Feb 2003
Location: Plover, WI
Posts: 1,510
Trader Rating: 15 (100%+)
Default

Mine still moved too much when everything was tightened down. So you'll just have to put it together and check it.
Scrad is offline   Reply With Quote
Old 01-17-2006, 11:08 PM   #12
Tech Master
 
captain america's Avatar
 
Join Date: Nov 2005
Posts: 1,435
Trader Rating: 9 (100%+)
Default

Hi Cornerspeed.

Indeed, the slop in the spur shaft parts diminished greatly when assembled. It seems to be down to about 0.5mm, just as you said it should be. I'll leave it as-is for now, and make any necessary changes if I see that there's any premature wear on the gears as I run.

I'm a little bit surprised that Kyosho neglected to give proper set-up info for the ZX-5 in the assembly manual. It would definitely be an asset to know how all the different parts and adjustment holes affect handling & performance.
captain america is offline   Reply With Quote
Old 01-17-2006, 11:15 PM   #13
Tech Elite
 
cornerspeed's Avatar
 
Join Date: Sep 2001
Location: San Diego
Posts: 2,388
Default

Yea, I was dis-appointed as well. Going blind with set-ups. And there seems to be no factory sugestions from team drivers.
__________________
Donny Vinkemulder
TLR Driver
TLR 8ight 3.0 - NovarossiUSA - Spektrum DX3R Pro - Losi Nitrotane VP 30% - Losi Lipo Batteries - Proline Tires - DE Racing - EKD Paint
--- Special thanks to: Dyno, Adam, Todd, and Kevin. Horizon Hobby
cornerspeed is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
F/S kyosho lazer zx5 Frank78 R/C Items: For Sale/Trade 8 08-30-2008 10:00 PM
WTB Kyosho Lazer ZX5 SP ORANGE DOG R/C Items: Wanted to Buy 2 07-13-2008 01:51 PM
Kyosho Lazer ZX-5 RTR help Troy711 Electric Off-Road 5 06-16-2008 11:58 PM
kyosho lazer zx5 yzf-r1 R/C Items: Wanted to Buy 0 03-12-2008 12:50 PM
Kyosho Lazer ZX5 Help Atom357 Electric Off-Road 10 07-18-2007 02:40 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 07:26 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