TRF201 Transmission Conversion for Nissan King Cab, Hilux Monster Racer, (Super) Astute & Madcap

[Kol__ 2728]

38 minutes ago, Sgt.Speirs said:

@bavee: In all my Tamiya model where I have to cut threads, I used a normal thread cutting tap (the 3 piece set). But I don't use them all according to the correct order (as required for a thread in metal), I just use the middle one. In Germany is this the tap with two rings. Then the thread is pre-cut/predefined, but the screw itself is not too loose in the thread.

Ooooh nice idea @Sgt.Speirs, my tap and die set goes from 3-12mm, but with just one tap per size. The holes do sometimes feel loose on the thread of the screw, I think I'll pick up a specific 3mm 3-piece tap set then!👍

[bavee 677]

Or this one @Kol__: Tamiya Gewindeschneider/ Gewindebohrer für M3-Gewinde #54232 (tamico.de)

[Sgt.Speirs 1015]

2 hours ago, bavee said:

Thanks! To be precise, I was not referring to a Tamiya model but to the M3 thread holes in the gearbox parts from Shapeways.

I meant Tamiya plastics and also 3D printed plastics (PA12, PTEG,...) 

[davidsen 85]

On 2/8/2023 at 2:57 PM, Sgt.Speirs said:

The slipper clutch package (TA-22031) includes no pinion gear. What you may be mean is the counter gear BA23 which is installed inside the gearbox on the slipper shaft.

🤣.... Did the same mistake... Had one single 48dp Pinion around, but too large. First I had a M0.6 pinion installed... Lucky enough I have double checked everything before doing first  test and replaced with the proper Module.

At my testride today everything worked brillant, but the ESC switched to half power after a minute. Not sure if caused by the battery (had a short run using the same battery with my XV-01 before) or overcurrent protection or a damaged motor. Already ordered a set ranging from 20 to 23T so I will gear down now and see if it's better tomorrow.

For me it's really special to have this truck back on the track again. It's a great runner. 

[Sgt.Speirs 1015]

@davidsen: To be honest, until now I didn‘t drove the gearbox with a brushed motor. I only used a sensorless brushless system (50A ESC, Motor with 3000kV).

What ESC do you use?
Which pinion size (number of teeth)?
Did you check your battery voltage to be sure that is was not the lipo safety shut-down?

For the next run, I would use the smallest pinion (20T) and test/drive in the same way  

[davidsen 85]

Used a Hobbywing 1060, Superstock TZ, 25T Pinion yesterday. 

Changed the Pinion to 21T in the evening and also added a Capacitor-Pack to the ESC. This ESC is known to have issues with low battery Mode, the Caps are a fix for that. 

result: today no low battery shutdown any more. Not sure it's because of the Caps, or the pinion... The battery recharged only 2400mA of 4000 and ist doing fine in every other ride. 

It's reacting way nicer with the smaller pinion. What a great fun ✌️

Will change down to 20 this evening because now it's doing Wheelies now and is still pretty fast 🤪. 

Does it do Wheelies with the 3000kV Brushless too? What pinion did you use on the brushless setup? 

 

[Sgt.Speirs 1015]

3 hours ago, davidsen said:

result: today no low battery shutdown any more. Not sure it's because of the Caps, or the pinion... The battery recharged only 2400mA of 4000 and ist doing fine in every other ride. 

It's reacting way nicer with the smaller pinion. What a great fun ✌️

That sounds great  👍🏻

 

3 hours ago, davidsen said:

Will change down to 20 this evening because now it's doing Wheelies now and is still pretty fast 🤪. 

Does it do Wheelies with the 3000kV Brushless too? What pinion did you use on the brushless setup? 

Yes, I have also be patient to do no wheelies on my first run. I used also a 21T pinion.

How tight did you adjust your slipper clutch?
The Dyna Storm manual says that the clutch has to stop slipping within 1m. I have followed this instruction.

[davidsen 85]

I have adjusted according the Td4 slipper manual. Does not seem to slip at all so it might be too firm. Honestly I have almost no experience with slippers so this is something that I need to work on for the next ride. 

[bavee 677]

On 10/31/2022 at 1:48 PM, Sgt.Speirs said:

Parts list for this modification:

1x 3D printed gearbox parts from Shapeways (latest rev. 1.3):   >> King Cab TRF201 Gear Box - Complete <<

1x 54471         TA06 Steel Gear Diff. Unit Rear
1x 22031         TD4/TD2 Slipper Clutch Set
1x 53587         Shim 5x0.2mm (1 needed)
1x 13454709  Idler Shaft  (alternatively: 54344)
1x 54262         Idler Gear (alternatively: 51416)
1x 19114075  Spacer N15 (N-Parts tree)
1x 19804411  Screw 3x36mm (4 needed)
1x 13450284  Aluminum motor plate (alternatively: 54225 /13454715)
1x 50586         Washer (2 needed)
1x 19805746  Cap Screw 3x8mm (2 needed)
1x 19808013  Cap Screw 3x6mm (2 needed)
1x 19805990  Screw 3x5mm (2 needed)
1x 19004273  Gear Cover
1x 19805957  Screw 3x10mm
1x 19805763  Screw 3x10mm
1x 19805765  Screw 3x8mm

1x 42115  Ball bearings 1510 (2 needed)
2x 42113  Ball bearings 1050 (3 needed)
1x 42113  Ball bearings 840 (1 needed)

@Sgt.Speirs, maybe you can add 53577 and 53588 to the above list in the opening post?

[davidsen 85]

On 2/12/2023 at 7:52 AM, davidsen said:

I have adjusted according the Td4 slipper manual. Does not seem to slip at all so it might be too firm. Honestly I have almost no experience with slippers so this is something that I need to work on for the next ride. 

Did a full battery ride yesterday and tried to set up the slipper. It's hard to hear it when it slipping or not but I managed to set up for almost no wheelies and good acceleration so I think I will keep it like this. Worst case I will need to get new slipper pads soon 🤪

Don't see a reason to go for brushless, the superstock motor is more than enough and offers great throttle control. 

[Sgt.Speirs 1015]

@davidsen: It sounds like you had a lot of fun 

[bavee 677]

Do you see something out of the ordinary here?

No? Well, here it is:

@Sgt.Speirs and @ThunderDragonCy this TRF201 Transmission Conversion really works great! Best thing is I'm not afraid to floor it. Can give it full throttle without worrying about doing damage to a vintage transmission. Thank you!