Botvac Wheel Tread replacement?

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Botvac Wheel Tread replacement?

Postby swd120 » July 5th, 2016, 3:13 pm

I've had a botvac for ~1 year now, and initially it worked great, but now it is frequently getting stuck at transitions, or sometimes just near the wall on the carpet. I believe this is due to treadwear on the wheels - as they appear quite worn down. I would say that tread depth is ~1/16th of an inch at this point - maybe less... its quite worn down after running every day for a year.

I've tried the rubber band traction fix as a temporary solution, but the rubber bands do not stay on the wheels (they come off after one or two runs). I know wheels aren't available for the botvac - but is it possible to just get new tread for that size wheel that could be glued on? Where would someone find something like that?

I saw these - but I'm not quite sure of the botvac wheel size - does anyone have the dimensions?
http://www.robotshop.com/en/lynxmotion- ... vt-02.html
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Re: Botvac Wheel Tread replacement?

Postby shirgal » July 5th, 2016, 3:47 pm

Yeap 0.15cm is almost no tread left, also check you bumper sensors if all 4 working nicely,a non working sensors lead to excessive worn to wheels due to bovac keep pushing against object and wheels are slipping and get torn faster than normal.

You can get new wheels at ebay at 75$ per each wheel assembly with motor.
Used around 45$.

http://www.ebay.com/itm/Neato-Botvac-Le ... SwqYBWoZY3
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Re: Botvac Wheel Tread replacement?

Postby swd120 » July 5th, 2016, 5:12 pm

Its silly to get the whole assembly - if I need to pay $150 for new wheel assemblies I may as well get rid of it, and buy a new one. Its super easy to remove the wheels from the assemblies, so I want eiether new treads, or new wheels only.
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Re: Botvac Wheel Tread replacement?

Postby vic7767 » July 5th, 2016, 6:41 pm

The issue you run into with searching for parts for your Botvac is that the only source is actually another Botvac. And that's why you can't just get a particular part and may have to purchase a larger assembly to actually get the part you need.
Roomba and Neato Mods, come visit: http://www.vic7767.com/

http://www.Robot-Doc.com/
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Re: Botvac Wheel Tread replacement?

Postby glnc222 » July 5th, 2016, 9:40 pm

I've tried the rubber band traction fix as a temporary solution, but the rubber bands do not stay on the wheels


Neato wheels are 3 inches diameter.

Replacing the treads on Neato wheels various ways is discussed in thread http://www.robotreviews.com/chat/viewtopic.php?f=20&t=17228&p=117712#p117681 (as indexed in the Mods & Repairs list top of main forum page).
It took some years before individual wheels for the old XV series appeared on ebay, and the Botvac is not as old.
You can replace the tread on your existing wheels with alternative material, while destroying the existing tread; they are molded onto the wheel.
Unlike the XV, the Botvac wheel can be made only with a 3D printer, if even then, because the inside rim is toothed as a planetary drive gear meshed with a pinion on the motor (contrary to a drive axle). Combines gearing with the wheel for simplicity.

The only bot I've found to navigate slick carpet without modification is the Powerbot with 4 inch, more viscous, wheels. The forthcoming Third Degree has been claimed to have superior traction as well.


it is frequently getting stuck at transitions, or sometimes just near the wall on the carpet.

This can be a problem of slick carpet more than wheels, which can sometimes be handled on Neato's with a "carpet slider" cardboard lift on the bottom (see mods & repairs list).
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Re: Botvac Wheel Tread replacement?

Postby shahramrobotics » July 10th, 2016, 11:02 am

I can design and 3D print the threads for you(or the whole wheel if you want) with PLA plastic and a rubber coating for better friction. You can go to my 3D hub, get a quote and place an order for your botvac:

https://www.3dhubs.com/baltimore/hubs/shahram-robotics

Shipping cost in US is $3 and $15 internationally.

For quoting, you need to have your 3d model beforehand but no problem, I'll give you something similar to upload
and then you need to give me the exact dimensions and spacing info to design and print.

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Re: Botvac Wheel Tread replacement?

Postby glnc222 » July 10th, 2016, 2:44 pm

Sounds like you could also manufacture softer front and rear rollers wanted by users with tile floors http://www.robotreviews.com/chat/viewtopic.php?f=20&t=19106&hilit=soft+roller
A few printer files (not the wheels yet) are listed in the Mods & Repairs list top of main forum page.

I wonder if 3D printed plastic can make strong enough gear teeth. Insufficient data.
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Re: Botvac Wheel Tread replacement?

Postby glnc222 » July 30th, 2016, 10:20 pm

As posted by member FlashErase, the tread is now printable 3D along with the wheel hub http://www.thingiverse.com/make:232141.
While the Botvac hub with gear teeth has not been printed, the original tread could be removed and replaced with a new 3D tread of different material and better properties. The tread is destroyed when removed, seemingly molded in place.
A number of services offer printing from user supplied files, though it can cost $20 to make something on such a custom basis. Or try the offer posted above with interest in robotics https://www.3dhubs.com/baltimore/hubs/shahram-robotics
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Re: Botvac Wheel Tread replacement?

Postby bunnabo » February 16th, 2017, 1:01 am

My Alfawise A6 Robot vacuum could not make the climb to my high pile carpet. We tried the rubber band fix and tried using a bike tube, which worked better, but only lasted two or three vacuumings. We never tried a vacuum cleaner belt as was suggested, but finally we found the solution which has worked perfectly for us. The tires on my Alfawise are 2 5/8", and a silicon Playtex nipple (from a baby bottle) with the tip cut off and turned inside out fits like a glove and does not come off or break at the seam, plus it is flexible enough to grip and roll right onto my shag rug. Hope this helps.
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