Having no money after buying tools and tooling, I’ve had plenty of time to plan out a robot platform. There are several ideas rolling around in my head. They range from independently-driven, independently-suspension-ed (?) 4WD drivetrains, to Ackerman-steering platforms with front, rear, and center differentials. Yeah, overly complex, at least for now. I’m instead going for a simple skid-steer drivetrain with no suspension other than the tires. The left-side two wheels will be driven by one motor, as is the right side. The difference in speeds causes the platform to turn. I also want to be able to get this thing up to a pretty good speed so I can run around with it like an RC car: ~20mph. I can already see it busted on a wall. It’s going to be great.
Now the question is where can I find motors? Ideally the shaft speed of the motor would be the same as the wheel speed. I found that to be impossible within a reasonable budget (<$50 ea). Typically the motors you find on RC trucks run at about 4,000 kv. For those that don’t know, a 4,000 kv motor runs at 4,000 rpm PER VOLT. Don’t get me wrong. A robot rolling down the road at 476mph would be cool. Maybe later. So, I’ll need to go with a gear reduction. It turns out that it can get expensive. Making a custom gearbox is an option. However it takes some careful design work to ensure proper meshing. I don’t think my master metalworking skills are quite up to that just yet.
I came across several people repurposing a cordless drill motor. Now there’s an idea! At Harbor Freight, you can get cheap Chinese junk like cordless drills. The batteries are horrible and the clutch be worn out fast. However, the motor and gearbox are pretty decent – and the output shaft speed is around 500 RPM, unloaded. Not bad for $20. I picked up a couple.
Bringing back the drills, I torn one apart and looked to see how I would mount it. The plastic housing and extended shaft would take up too much space in my robot. The plastic housing is part of the clutch assembly, as it allows the ring gear to spin if the clutch isn’t tightened all the way (the drill setting). Also, proper mounting is non-trivial. I came across another site showing a custom gearbox enclosure for a drill. This is definitely the way to go as it gives you a better fit and mounting options.
Then I came across this:
It’s the Harbor Freight 18V 5-1/2″ Cordless Circular Saw, part # 67026, and was on sale for $25. The no-load speed is 3800 RPM, uses a larger 750-sized motor, and has a mounting bracket already! As far as I know, no one else has tried this. That’s usually a bad sign, but it’s worth a shot.
Here are some pictures from the break-down process.
Random Youtube video of the motor? Sure, here you go: http://www.youtube.com/watch?v=3KQaba3A2qI
January 21, 2020 at 4:00 am
Thank you for sharing this article with such good content, quality image accompanying. Good luck in the following article.
January 22, 2020 at 11:38 pm
Such a large part of the content and effective website! Engaging data on your blog, I appreciate you for using the time and join with us. marketing assignment help gives high-quality content reported to action. by experienced specialists.
February 1, 2020 at 5:00 am
thank you so much for this article.
February 1, 2020 at 6:04 am
Tools are very expensive. Mostly when people want to buy these tools, it cost more expensive. Sometimes, small parts of the motors are available but the question is from where you can find major parts? because it is so complex to get new parts.
February 4, 2020 at 5:05 am
Thank you for sharing all of this article, it really helps me a lot in the future. Hope you can come up with the next good article
February 6, 2020 at 4:00 am
Need to write a discussion board post? There is no better desicion that to contact a reliable writing service and order a professional help.
February 6, 2020 at 4:13 am
I am fully accepted with your views in this post!
Gardening is the most and more need for decent health! Love this post thanks for sharing.
February 6, 2020 at 4:15 am
Love this post thanks for sharing.
April 29, 2020 at 4:22 am
I second !
April 29, 2020 at 4:23 am
I second ! This is really good pos!
February 10, 2020 at 1:39 am
Thank you for sharing the whole content of this article, it helps a lot for me in the future, hope you will share more about such good articles.
February 12, 2020 at 2:34 am
An app SpeedyPaper Adviser is a great study helper. It contains so many samples of academic papers, and students can use them for free. Find and bookmark a sample you need.
February 12, 2020 at 6:40 am
There are several applications provided by H13 tool steel. H13 hot tool steel is used for extrusion. A hot work tool steel H13 Supplier offers this to use in liners, dies, backers, die-holders, dummy blocks and stems. H13 tool steel also applies to plastic molding. It can be used as injection molds compression or transfer molds.
February 13, 2020 at 5:03 am
I am completely acknowledged with your perspectives right now! Cultivating is the most and more requirement for not too bad wellbeing! Love this post a debt of gratitude is in order for sharing.
February 20, 2020 at 1:07 am
The article appears as an extremely attractive topic to explain. Your post is extremely helpful to me. Thanks for your great post. I am especially happy to take a look at your post.
February 21, 2020 at 4:37 pm
Thanks for sharing this is such a great post that you are providing and you give it away for free. I love seeing blog that understand the value of providing quality information for free. I would like to suggest you that please keep on sharing such type of information with us. I really found it too much informative. It is what I was searching from many days.
March 6, 2020 at 1:41 am
Your feedback helps me a lot, A very meaningful event, I hope everything will go well
March 12, 2020 at 9:36 am
Amazing!!! I like this website so much it’s really awesome. Keep it up
Wishestatus
March 12, 2020 at 9:37 am
Amazing!!! I like this website so much it’s really awesome. Keep it up
Wishestatus
March 12, 2020 at 9:38 am
Amazing!!! I like this website so much it’s really awesome. Keep it up
March 14, 2020 at 1:45 pm
thank you
March 17, 2020 at 8:06 am
I’ve learnt so much from your website. It is clearly one of the best websites that I can find useful information. The narration is very fluent and easy to read. I can find everything I’m looking for without a doubt, and I definitely suggest your website to everyone.
March 22, 2020 at 7:09 am
Your feedback helps me a lot, A very meaningful event, I hope everything will go well
March 25, 2020 at 12:50 am
https://www.socifan.com/
March 30, 2020 at 3:24 am
Followers-Shop will help you to grow your social media accounts. You can get growth services now and develop your brand to the next level!
March 31, 2020 at 3:29 am
Buy Instagram Followers
April 2, 2020 at 3:07 am
Great and clean website! thanks for sharing
April 2, 2020 at 3:08 am
Amazing website! thanks for Spreading
April 2, 2020 at 9:03 am
https://www.beyazsomine.com/
April 2, 2020 at 9:03 am
Beyaz Şömine
April 3, 2020 at 2:32 am
Many people want to learn about this gadget, but they have not enough knowledge but after reading your post, many people can get knowledge and benefits from this gadget.
April 3, 2020 at 2:33 am
Many people want to learn about this gadget, but they have not enough knowledge but after reading your post, many people can get knowledge and benefits from this gadget. Thanks for sharing this nice post.
April 6, 2020 at 1:27 am
Instagram Beğeni Satın Al
April 8, 2020 at 3:16 am
Great Post thanks for sharing!
April 9, 2020 at 1:18 am
Some people show their interest in innovating but the bad thing occurs that they don’t have much knowledge about these gadgets and if they try to figure out some functionality then some of those gadgets get hard to find in the market.
April 9, 2020 at 3:32 am
Would request up for a translated version !
April 9, 2020 at 5:18 am
Buy Pinterest Followers
https://www.instafollowers.co/buy-pinterest-followers
Pinterest is a great platform to promote your business if you have a business that is focused on visual content. For example, you are an architect, and you want to attract interest with your works. You can put your designs and other material related to your work on Pinterest and show off the good work that you have.
April 13, 2020 at 12:43 pm
we appreciate you for this article. if you are interested in bitcoin and want to buy in India then you should know “Is Bitcoin legal in India” and “Is BItcoin allowed in India”. here we provide you all about bitcoin and crypto news that’s encourage you to invest in.
April 15, 2020 at 8:33 am
Pinterest is a social networking site with visual weight, which has reached 10 million members in a short time since its launch. We will try to answer the question of what is Pinterest in this article.
April 22, 2020 at 7:26 am
SEO ayarları sitenizin arama sonuçlarında üst sıralarda yer alması için yapılması gereken en önemli optimizasyon çalışmalarının başında gelmektedir.
April 25, 2020 at 10:41 am
meme estetiği Plastik ve estetik cerrahinin sıklıkla kullandığı ameliyatlardan birisidir. Genel göğüs büyütme yöntemlerini içeren ameliyatın yapılış şekli uygulanacak yönteme göre değiştir.
April 27, 2020 at 9:53 am
SEO hizmeti satın alarak web sitenizin eksikliklerini tamamlayıp hedeflediğiniz kelimelerde hızla yükselebilirsiniz.
April 27, 2020 at 12:27 pm
The design of this content is unique which can help a reader to sort out the right thing.
April 27, 2020 at 10:16 pm
Really great post thanks for the information. I appreciate your post and look forward to more. Bitcoin is a new age of money. Do you know you can Earn Bitcoins on Android
April 28, 2020 at 6:15 pm
thanks very good share..
April 29, 2020 at 4:32 am
Such a great website.
May 4, 2020 at 2:35 am
SEO uyumlu bir web sitesinin arama motorlarındaki kelime sıralaması rakiplerine göre her zaman daha yukarıda olacaktır.
May 4, 2020 at 10:39 pm
We will discuss sawbot which is a kind of simple shoe, shaped and hollowed out from a single block of wood, traditionally worn by French and Breton peasants. Many people like it and use it.
May 5, 2020 at 5:55 am
Good morning! Do you want to order essay papers online fast, because you have no time to do your own literary masterpiece!? So, forget everything else and I have an awesome idea for you. You can contact our online writing company and then you will see how pro writers will help you to do prime assignments!!!
May 6, 2020 at 4:37 am
Thanks for this amazing article. We appreciate your efforts always.
May 7, 2020 at 2:54 pm
Boost your social media presence instantly get famous.Know how to get real instagram followers cheap.
buy instagram followers
May 11, 2020 at 5:33 am
Mobil Operatorler