Notices
RC Tanks Discuss all aspects of rc tank building and driving here!

DKLM gearbox

Old 12-06-2021, 09:35 AM
  #1  
ronnie42
Senior Member
Thread Starter
 
Join Date: Nov 2020
Posts: 213
Received 35 Likes on 30 Posts
Default DKLM gearbox

The motors are on the wrong side for an Elmod board ,one of the leads is short due to motor fixing. Stripped gearbox down as the short lead is hidden, you need to disassemble the side with the toothed belt. Will colour code the plug and socket to avoid mistakes .Click image for larger version

Name:	Jinp6oP.jpg
Views:	84
Size:	301.2 KB
ID:	2271142Click image for larger version

Name:	94pNaIE.jpg
Views:	80
Size:	315.7 KB
ID:	2271143Click image for larger version

Name:	drlOoWy.jpg
Views:	76
Size:	265.1 KB
ID:	2271144
Old 12-13-2021, 01:04 PM
  #2  
ronnie42
Senior Member
Thread Starter
 
Join Date: Nov 2020
Posts: 213
Received 35 Likes on 30 Posts
Default

Part 2 of the maintenance, was going to add some grease and found a possible problem . One of the gears has bearing recesses that are not round, have part of another position for a different gear. Filled the upper section with epoxy as the bearing might move and destroy the gears.





Last edited by ronnie42; 12-13-2021 at 01:11 PM.
Old 12-13-2021, 05:20 PM
  #3  
Tankster
Senior Member
 
Join Date: Mar 2020
Location: Illinois
Posts: 125
Received 22 Likes on 18 Posts
Default

My DKLM gearbox developed one totally wallered out bearing recess and allowed the gears to completely slip while climbing any incline. Very disappointed.
I happened to have a new Heng Long version on hand so I installed it and never looked back. I did however use the DKLMís slower drive gear on my Heng Long unit.
Not saying that I couldnít possibly repair the DKLM but didnít want to bother with it. If I ever buy a second tank I will buy another Heng Long dual current gearbox for it as well.
edit. Just found my old video.

Last edited by Tankster; 12-13-2021 at 05:25 PM.
Old 12-14-2021, 03:10 AM
  #4  
ronnie42
Senior Member
Thread Starter
 
Join Date: Nov 2020
Posts: 213
Received 35 Likes on 30 Posts
Default

I would open up the HL gearbox,if itís a copy it will have the same bearing positions . Looks like a money saving design using the same housing for high and low speed gearboxes. All depends on the Al used as Al has many grades, If itís a soft Al same result will happen 😳. The bearing is only held in a 2/3 housing.
Old 12-14-2021, 04:51 AM
  #5  
jha13
 
jha13's Avatar
 
Join Date: Aug 2017
Posts: 59
Received 12 Likes on 8 Posts
Default

How many DKLM gearboxes have failed because of this gear?
When the side plate is mounted, the gear is between two ball bearings, so nothing wobbles...
Old 12-14-2021, 11:01 PM
  #6  
Michal_Kaczorowski
 
Join Date: Mar 2018
Location: Ciechanůw, Poland
Posts: 219
Received 54 Likes on 42 Posts
Default

It look very cheap for that price
Old 12-15-2021, 02:09 AM
  #7  
ronnie42
Senior Member
Thread Starter
 
Join Date: Nov 2020
Posts: 213
Received 35 Likes on 30 Posts
Default

True. It's just that today everything is make to a price point. A race to the bottom 😩 and no incentive to make durable products as they are more expensive. The price will fall if they are factory fitted and production is ramped up.

Last edited by ronnie42; 12-15-2021 at 02:14 AM.
Old 12-17-2021, 12:13 AM
  #8  
tomhugill
 
Join Date: Mar 2010
Location: , UNITED KINGDOM
Posts: 2,376
Received 13 Likes on 11 Posts
Default

Originally Posted by Tankster View Post
My DKLM gearbox developed one totally wallered out bearing recess and allowed the gears to completely slip while climbing any incline. Very disappointed.
I happened to have a new Heng Long version on hand so I installed it and never looked back. I did however use the DKLMís slower drive gear on my Heng Long unit.
Not saying that I couldnít possibly repair the DKLM but didnít want to bother with it. If I ever buy a second tank I will buy another Heng Long dual current gearbox for it as well.
edit. Just found my old video.
https://youtu.be/M-zSRtn4THk
I think if you took one half of the mounts off any gearbox the same thing would happen. There are many happy users of the pdsgb that have never had an issue. However I have found the manufacturer to be very helpful after I managed to bend a final draft shaft which was causing a tight spot. Think he charged me $10 for the repair and that gear pack has been going strong since.

I'm wary of the HL knock offs as they're just as expensive (if not more) and have cut a few corners which I think will effect longevity
Old 12-17-2021, 02:46 AM
  #9  
ronnie42
Senior Member
Thread Starter
 
Join Date: Nov 2020
Posts: 213
Received 35 Likes on 30 Posts
Default

Originally Posted by tomhugill View Post
I think if you took one half of the mounts off any gearbox the same thing would happen. There are many happy users of the pdsgb that have never had an issue. However I have found the manufacturer to be very helpful after I managed to bend a final draft shaft which was causing a tight spot. Think he charged me $10 for the repair and that gear pack has been going strong since.

I'm wary of the HL knock offs as they're just as expensive (if not more) and have cut a few corners which I think will effect longevity
That good , I would buy a couple of base units as itís a good system. Gearbox goes faulty you can replace without tracks and sprockets off. The board manufactures should tweak the setting for realistic wide turns.
Old 12-18-2021, 07:21 PM
  #10  
UGA-SAN
Junior Member
 
Join Date: Mar 2021
Posts: 1
Received 0 Likes on 0 Posts
Default

When I replaced the motor with a powerful one and used it for a heavy tank body of 15kg, my PD SGB damaged the mounting part in front of the case.
I heard that PDSGB will release metal cases next time, so I will try them.
There is no problem with the metal case of HENG-LONG so far. However, it is not compatible with the base of PDSGB, so there are no plans to increase it.

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.