Zerobricks

I realize that, but you could combine a 12 tooth clutch gear and the ring gear extension into a single 2 stud long part. I'm also a bit bummed they didn't put the clutch gear recepticle in the red 28 tooth gear of the new differetnial, there's plenty of space for that.

I wish I would have more time to create more MOCs and videos, but unfortuentely I have been busy a lot lately and to be honest I don't feel as inspired as I once was... Maybe I'm having a bit of a dark age, who knows... Anyway I did manage to make a video of the gearbox concept inspired by the following thread: In order not to hijack the before mentioned thread, i decided to post the video of the gearbox's concept here: Secondly I also got an idea on how to use the new differential as a central differential with a high-low selector and the central lock. The upper differential acts like a 28 tooth clutch gears (no bevel gears inside) and the lower one acts like a normal, central differential. When the central diff is in the high gear, it's unlocked. When moved to the low gear, one of the outputs is coupled to the drive gear, effectively locking it (as shown in the image). So yes IMO the new differential has many uses as a 28 tooth clutch gear, though having a dedicated 28, 24 and maybe even 12 clutch gear would be ideal.

Agree, unless there's some kind of a new element like a 3x7 curved panels or such which would help.

No, I think it's another series to go along, every 2 years a 1:8 car and and a 1:5 bike. And inbetween 1:10 cars and the 1:16 mini ones.

Like the Harley Davidson? But the pistons have to be visible, that's the point of technic.

This might be a good set to introduce long, hard shock absorbers in the front! I also think we might need bigger pistons and engine blocks at this scale.

I imagine there's an internal mechanisem that allows you to change the track shape, for example from flat to triangle or maybe two sets of tracks with one rotating allowing the model to climb better over obstacles.

I like the return of the transparent engine blocks and the use of LEDs in a technic set (last one was 8297?). Also happy we get the new Ferrari's fenders in a neutral color like black, combined with wheel covers from the Raptor we have all the matching pieces in black. Can't say I spot any new pieces though.

I also found a way to use this differential as a central differential Lo-Hi gearbox and diff lock, but maybe I should post that in a seperate topic?

I did increase the ground clearance, increase the gear ratio a bit and installed BuWizz 3.0 to power it. Next upgrade would be replacing the original motors with BuWizz motors, but that's much harder than a simple axle mod.

Simple fix. Rearange the gear pairs so they follow the right order. And here it is, the 4 speed linear gearbox, with as few gears as possible:

I hope it's not too offtopic, but here's how you can use the new diff as a gearbox clutch gear component: Yellow axles are inputs, they can be on both sides of the gearbox The red axle is the output and it can only be on one side of the gearbox Same goes for the orange axle - the wave actuator It has a massive gear ratio of 3,5 in low gear and 0,8 in high gear, giving the gearbox the total range of 4,375. II think we can use this idea with a combination of the 24-16 differential and the usual clucth gears to make a linear gearbox with 4 gears with the following meshes and ratios: First gear: 8:28 - ratio of 3,5 Second gear: 12:24 - ratio 2 Third gear: 16:20 - ratio 1,25 Fourth gear: 20:16 - ratio 0,8

I agree regarding having no axle center stop. You could put axles deeper, thereby preventing slippage AND use the differential itself as 28 clutch gear for gearboxes and such. EDIT: You can already the new differential as a gearbox, I will post pictures shortly

Thanks for the confirmation. It seems these new tyres have a really good traction and they are very sensitive to both high weight and incorrect geometris.

They have pros and cons IMO Pros: Can be driven axially or perpendicular Can provide a higher gear ratio where space is tight (for example small offroaders) The gears don't fall out when removing the axles Can be locked The strongest differential when driven axially. Cons: Not as strong as normal 28 tooth differential when driven perpendiculary with a 12 tooth bevel gear (might be better when driven by a 20, 28 or 36 tooth beverl gear) Because of the design of the 12 tooth gears, the axles are very prone to sliding out and slipping causing the diff to fail

Thanj you, Majkl. Regarding shock absorbers, I can easily fit more in parallel if needed, up to 3. Unfortunetaly the shock absorbers and steering mechanism get in the way. Besides having all the drive gears and central diff aligned simplifies the locking mechanism to a single axle.

Just built this set a day ago and I noticed it has a ton of rolling resitance. It seems to happen with original tyres only, any other ones are much smoother. Anyone else noticed that?

Adding offset is easy, but the real ones have such small offset, it's negliable. Having no offset also makes the setup system more symmetrical.

Sure, here's the gearing: I tested it and when holding the wheel it will make the rim spin inside the wheel, haven't managed to make it slip for now. If it's going to be an issue there are thin bricks I can slide under the bevel gear to keep it from bending.

I really like the way you attached the rear shock absorbers at a spacial angle and the use of the 16L links as diagonal braces. Can't wait to see the final video.

Inspired by the release of the planetary hubs and the diff lock idea from Zetors I decided to create a proper, realistic Tatra 8x8 with the following goals: Use of planetary hubs - Keeping it realistic, so no portal ones No load bearing axles - Most other models used the same drive axle to also hold the half-axles in place which increased friction in the driveline Realistic steering setup - Using a smillar mechanism the real trucks use Differential locks on all wheels - Each axle has it's own diff lock + a central one Here's what I came up with so far... The concept uses the blue bevel gears to transfer the power to the half-axles without spinning the pivot axle. This also allows for wheels to turn at different speeds when cornering. Once the power is transfered to the half-axles an additional gearing is used before the power is delivered to the wheel. Total gearing on half-axles alone is 1:9. Differential locks work by locking one of the differential's output to the main drive axle. As mentioned before all 4 axles have lockable differentials along with the central differential. Steering uses a couple of 9L links turned by the turntable acruated by an 8 tooth gear. This setup provides the front axles with slightly different steering angles. The model will probably powered with 4 of the BuWizz motors. Total gear ratio is 1:21 which should give the model around 900-1000 Ncm torque. I think the concept looks very promising so far and I will keep on building it virtually until I'm confident enough to order parts.

I disagree on versatility. I'd say we gained a lot of it, because you can build more more interconnected builds in a constant raster of 8 mm in all directions.

I've had 2 motors fail recently, an XL and L. The XL motor was used a lot daily for testing for some 3 months. The XL started to turn slower and I could feel reistance when spinning it by hand. I took it apart, including the electrical motor itself and discovered that one of the brushes (they are not usual graphite burshes, but metal ones) managed to get bent backwards causing some kind of a short on the winding. The L motor was used in the steering from 42099 for a year or so, only for testing and that's very low usage, maybe once per week. The L motor is showing symptoms of reduced power, it doesn't reach as high currents when loaded/stalled as other ones, it feels like either the winding is damaged or that the internal protection is broken and triggers way too soon. I've never experienced such problems with Power Functions motors, so I'm a bit worried about their robustness.

Hmm, interesting. Make sure both geraboxes are properly synchronized.

The defnder does use the wave selector though.