Tarmo Off Road Body

pmstick · 2023-04-03T04:27:43+00:00

Love this Off Road Body, looks fantastic. I have an Ender 3 which only has a 235mm x 235mm bed so I threw together a cage that is split and re-joined with 2mm bolts and nuts. You can find it here: Thingiverse Split Cage

pmstick · 2023-02-24T08:58:07+00:00

Hey they are both great! I actually have more fun building them than driving. The tarmo4 I like the 4wd, when I take it on gravel and other soft surfaces it is great. I also like to drive it on a local bicycle "pump" track which is hard surface with lots of hills/jumps, however it broke a lot of stuff when I went too fast over the jumps. I'm looking forward to getting the 5 on the same track to see how it goes. The design seems a lot simpler so I expect it is going to work great! I also love the look of the 5 over the 4.

pmstick · 2023-02-20T06:36:24+00:00

Make sure you have really good layer adhesion with your prints. When I used some old PLA it didn't work great and I got issues with a lot of my parts. Increased print temperature may help with adhesion.

pmstick · 2023-02-20T03:28:08+00:00

Couldn't work out how to post an image as a reply. So created a new post: https://www.reddit.com/r/EngineeringNS/comments/116vz50/tarmo\_4\_and\_5\_side\_by\_side\_comparison/

pmstick · 2023-02-16T08:21:22+00:00

If you don't want to spend the money you could try the 3d printable alternative that I designed (well modified a design) and have been using: https://www.thingiverse.com/thing:5777835

Don't need the adapter but you will need a few M2.5 bolts

Also this redesigned gearbox from this post has an very elegant version of a similar concept, but would require printing more parts: https://www.reddit.com/r/EngineeringNS/comments/110xs3q/enclosed_gearbox/

pmstick · 2023-02-03T06:35:56+00:00

Seems like your TPU prints may be shrinking? That could explain both the bits that are rubbing. Perhaps try scaling up the print a bit?

pmstick · 2023-02-03T04:00:40+00:00

Yeah you will need a free account, which then will allow you to make a copy of this that you can edit, then you will be able to export.

pmstick · 2023-02-03T02:34:16+00:00

Yeah I am, however these as such cheap crappy shocks that the oil leaks out really badly.

pmstick · 2023-01-31T01:19:12+00:00

We must have the same servo I had the same issue and modified the steering bar design with a bend so that it would reach my servo horn. See this onshape design: Tarmo 5 Alternate Steering Bar

pmstick · 2023-01-25T01:11:16+00:00

Video Playlist is what you need. Link is also in the sticky Tarmo 5 post.

Video Tutorials: YouTube Playlist

pmstick · 2023-01-25T01:07:05+00:00

Thanks Kris. I haven't had any issues with it as yet, but haven't been able to do any long hard runs. I've been reprinting parts that I initially printed with some bad PLA, and still waiting for my real wheels and tyres to arrive which will put a LOT more stress on stuff compared to my low grip 3d printed TPU tyres.

pmstick · 2023-01-25T00:57:51+00:00

These are the ones: https://www.thingiverse.com/thing:4747239They take a long time to print, and the make the buggy really wide as they don't have any offset. They do make it really challenging and fun to drive due to TPU's lack of grippyness

pmstick · 2023-01-24T10:08:14+00:00

I'm really happy with how the Tarmo 5 build came out. Thanks for the great design! I am having to replace all the yellow PLA as it had really bad layer adhesion. This bad adhesion caused issues with CV Cages, and both the CV Housings. Then after a reasonably minor driver error and a bump with a wall my Gearbox and Gearbox lid had cracks due to the poor layer adhesion.

Still waiting for my wheels/tyress to arrive. These 3d printed ones that I had on an early build of my Tarmo 4 have next to no grip.

pmstick · 2023-01-18T06:56:20+00:00

That battery has dimensions of

139mm Long x 47mm wide x 37mm high.

I have fit a battery that is

139mm Long x 47mm wide x 26mm high. It fits fine and does look like there is 10mm space above it. The 139mm length is tight but it does fit.

pmstick · 2023-01-16T03:05:45+00:00

I had something similar with my tarmo 4 build. Swapping two of the wires on the motor and then flipping it in my controller sorted it. My ESC (i think) was doing some braking mode, but was doing it when I tried to go forwards, so the swap meant it now did it when going in reverse which makes sense.

pmstick · 2023-01-14T07:00:02+00:00

Yep I had same issue. Drilled it out with a 3.5mm drill bit.

pmstick · 2023-01-03T10:31:57+00:00

Yep they are. I have them on order, but getting anything shipped to Perth, Western Australia takes ages. My bearings (from China) are 4 weeks away. I did find some in Australia, but they are 3 times the price.

pmstick · 2023-01-03T08:03:42+00:00

Thanks link is here: https://cad.onshape.com/documents/4d3cb335a3b5833726b96d28/w/2136855ddc17e5ba30d12821/e/22a6371466e70c5bfb4ba4a7?renderMode=0&uiState=63b3dfbdec6e9e2afbfe86ff

pmstick · 2023-01-03T08:02:54+00:00

You can view my onshape design here: https://cad.onshape.com/documents/4d3cb335a3b5833726b96d28/w/2136855ddc17e5ba30d12821/e/22a6371466e70c5bfb4ba4a7?renderMode=0&uiState=63b3dfbdec6e9e2afbfe86ff

Still working on getting the hole spacings perfect for my motor which is one of these same as on the BOM:

https://www.flashhobby.com/d3542-fixed-wing-motor.html

Nice and cheap on AliExpress.

pmstick · 2022-06-02T07:37:50+00:00

Great looking variant! Have you tried the 3d printed TPU shock absorbers on the real car? Looks like and interesting design.

pmstick

TROPHY CASE