- Reaction score
- Birmingham, AL
- Tekno RC's
- Driving Style
- Thread starter
Yes, mine should be arriving on Monday.
Welcome to Tekno RC Forums! Are you a Tekno RC fan? If so you're in luck as you've have arrived to the biggest and best Tekno RC community.
Come join our community and ask your questions, show off your Tekno RCs and share your experience!
Yes, mine should be arriving on Monday.
My idea was that this naylon shim will fill the gap to the plastic divider of the diff box. Then this will support on impact the flange. Why you think it might not work? Do I miss something?The shim(s) take the pressure off the plastic divider. The 2nd shim is only required when using a flanged bearing. That spacer you linked will not work.
The flange bearing has 1mm thick flange and hence only goes 3mm into the diff case (compared to that the original bearing goes complete 4mm into the diff case). So there shall be a1mm gap to the divider. I want to fill this 1mm gap with the 1mm shim. So in total it will have the „Dimension of a 5x13x5mm flange bearing“.The bearing OD is 13mm, and the plastic divider is probably around 1mm thick on each side, so that means the maximum OD shim size is probably around 11mm. The shim you listed was 13mm OD.
Ok sounds good.The flange bearing has 1mm thick flange and hence only goes 3mm into the diff case (compared to that the original bearing goes complete 4mm into the diff case). So there shall be a1mm gap to the divider. I want to fill this 1mm gap with the 1mm shim. So in total it will have the „Dimension of a 5x13x5mm flange bearing“.
There's a lot of alternative options, here's a few examples.I can’t find those shims you recommend. Does anyone else make them?
Thank you I just went with the one from amazon it’s 2.5 I’m just going to sand it downThere's a lot of alternative options, here's a few examples.
SWorkz 5x8x0.8mm shims (x3 = 2.40mm)
Yokomo 5x8mm shim set (x1 = .05mm)
Then sand the surface to get to 2.45mm width
?How/where did you order it? I see all this ALLRACING hopups in Aliexpress, but the gearbox is not there...
I'm really late to the party as I've only just got my MT410 ?The biggest problem I see in the bashing community happens during big air flat landers which creates a tremendous amount of flex. When the rear of the chassis flexes really hard, the center rear driveshaft slams into the pinion gear end and this can make the set screw lose grip. Once that happens you can destroy the pinion bearings, pinion gear, or gearbox pretty quickly. What I have found that works for extreme bashing is simply using a flanged bearing on the outside of the gearbox which makes it so the driveshaft cannot make contact with the pinion gear. Instead all of that force hits the coupler and the coupler hits the flanged section of the bearing and there’s no possible way to damage anything. I also use shims in between the two pinion bearings for added security, so there’s no pressure on the plastic divider.
A high quality flanged bearing from Boca costs $8 and makes the gearbox bulletproof. For the shims, a total thickness of 2.45mm works perfect.
Boca flanged bearing 5x13x4
Boca regular bearing 5x13x4
HPI shim 5x7x1.45
Serpent shim 5x7x1.00
Other parts used:
Arrma center rear 5mm steel driveshaft (this is 3mm shorter, only for ET48.3, AR310470)
Knurled set screw M5x5 (BoltDepot.com)
View attachment 1985
When you have a lot of chassis flex the driveshaft can slam into the pinion gear, which has potential to cause some damage if the set screw breaks loose.
View attachment 2512
View attachment 2513
Works fine on the MT410. Nothing besides the bearings and 2.45mm of total spacers are needed. I did it myself:Hi, new guy here. Can someone confirm: Does this mod on the regular MT410 need a new/shorter drive shaft? What is the part number? Does it also require shortening by grinding a mm or so from both ends? The OP seems ambiguous on MT vs other Tekno models. Thanks!
I have seen they sell metal diffs on e bay but it's for mt410? I'm hoping when I have the money I'll purchase to try them out?do somebody have experience with this metal diff for ET48? I tried to contact him on FB but no joy.
Register and gain access to Discussions, Reviews, Tech Tips, How to Articles, and much more - on the best Tekno RC community for RC enthusiasts that covers all aspects of the Tekno RC brand!
Register Today It's free! This box will disappear once registered!