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Cheap Drill Motors
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miles&Jules
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Joined: 19 May 2010
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Location: ipswich QLD


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Hi I went through the checkout process and it says postage to Australia would be $30

Think it will work....might order some to see. It says it was going to be $66 or 2 drills +screws -total.

Miles
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Post Fri Feb 18, 2011 8:24 am 
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miles&Jules
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Placing order now...$66 for 2 drill/gearboxes and 2 reverse srews
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Post Fri Feb 18, 2011 12:36 pm 
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Knightrous
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Joined: 15 Jun 2004
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Location: NSW


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quote:
The parts are listed as follows:
Motor Assembly - $6.99ea
Gearbox Assembly - $8.46ea


10x sets with left hand screws = $212.91 AUD shipped.
Makes the drills pretty cheap at $21.29 each.
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Post Mon May 09, 2011 8:42 am 
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Fish_in_a_Barrel



Joined: 30 Sep 2006
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Location: Perth, Western Australia


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they don't sound so good in the video...
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Post Mon May 09, 2011 9:58 am 
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marto
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Joined: 08 Jul 2004
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Location: Brisbane, QLD


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Thread dredge.

On the drill thread topic. Thought I would mention these drills again. The Ryobi ones are all still working. And I have never broken a gear in them. They are 50% plastic 50% steel but yeh still and never broken a gear. Just to put this in perspective they have run in WedgeBot since it was made. Like 3-4 years ago. They were always run on Red wheels @ 4S Lipo or 5S A123s. It has even survived being completely torn apart and several fights with scissor hands.

They don't have a clutch so no dicking about their either. The one thing I don't like is the stupid pins to hold on the back plate. These can pop of in huge impacts. (They are mounted with zip ties in wedgebot) But this may not be a bad thing in hindsight. And with proper mounting I doubt it would happen. Zipties just shouldnt be used to hold on your motors Razz.

Maybe we should import some more as a known quantity of drills. Just gotta make sure not to forget the left hand screws again and they are the same. As I doubt people are going to find something cheaper than drills its just that we need to run them on 4S or less and make them easy to change.

Steve
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Post Tue Aug 06, 2013 4:29 pm 
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miles&Jules
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Yeah they look like a good buy-4s for drills is prolly wise to Very Happy
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Post Wed Aug 07, 2013 6:42 pm 
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tetraPark



Joined: 07 Oct 2013
Posts: 62
Location: Brisbane / Ipswich


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Hey guys,
I'm just trying to get ultimate clarification on my little 4x drill motor question.

2x drills, 85amp each is clearly the way to go...
4x drills (each needing their own esc), 85amps each seems overkill...

The team tentacle torque calculator seemed to indicate that for a machine of my theoretical stats (with 4x 18v drills) max amp draw would be in the single figures... that seems a little optimistic, but if I can get away with SAFELY using say 30amp escs from botbitz, it would save me a lot of money (which I will spend on other botbitz products at some point, i swears Razz).

thx

Post Sun Nov 03, 2013 1:14 pm 
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Jaemus
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This is just opinion / feeling, but I'd say if you are using a 12v drill @ 12v or near to it, (say no more than a 4S lipo) 30A ESC's x4 is the way to go. What I would personally do is grab 1 or 2 spares, because while I dont think you're going to blow all 4 at once even under extreme circumstances, chances of 1 of them going somewhere somehow is higher, so you want to have spares on hand to cover that during an event. Especially if your delicate wheels are prone to stalling the drills.

So AFAIC your options are:

4x 30A + spare(s)
-- 6x $40 = $240 total With 2 spares (Personally I'd recommend this)
-- 5x $40 = $200 total With 1 spare

OR

4x 85A and take the (lower) risk of not getting a spare = 4x $75 = $300 total

Having said all that I'd still recommend shelving the fancy omni drive train for the time being and just putting together a simple, cheap 2WD robot and practicing with that, refining it until it's reliable, then with your greater experience tackle the omniwheel design later on. If you're anything like I was, I'm wasting my breath here, as this is what I was told as well, but I now believe in it strongly enough to preach it to you, so take from that what you will Smile
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Last edited by Jaemus on Tue Nov 05, 2013 6:56 pm; edited 1 time in total

Post Sun Nov 03, 2013 3:02 pm 
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miles&Jules
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Yep grab the 30amp botbits esc-they are half the price of the tz and work great Very Happy
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Post Tue Nov 05, 2013 12:16 am 
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shakesc



Joined: 14 May 2012
Posts: 62
Location: UK


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So would a single 30a botbitz drive 2 drill motors happily?
(I know the tz85a do)

Post Wed Nov 06, 2013 5:34 am 
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dyrodium
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That's just asking for trouble... Rolling Eyes
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Post Wed Nov 06, 2013 7:27 am 
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shakesc



Joined: 14 May 2012
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Location: UK


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Fair enough. Have tz85a and they work nicely

Post Wed Nov 06, 2013 8:43 am 
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tetraPark



Joined: 07 Oct 2013
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Location: Brisbane / Ipswich


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@Jaemus and @M&J thanks for the advise guys! I've hit up the Logan recycling market and got 6drills for $20. All worked; gears fine, though motors in different states of wear it seems. Contacted ozito and they say they are willing to send me out 8 x 18v used drill motors+gearboxes for $5 each plus postage. I think thats kind of a one off though.

Post Wed Nov 13, 2013 3:00 pm 
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Jaemus
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Location: NSW


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Haha wow, thats cool re Ozito
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<Patrician|Away> what does your robot do, sam
<bovril> it collects data about the surrounding environment, then discards it and drives into walls

Post Wed Nov 13, 2013 3:21 pm 
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Tim



Joined: 30 Oct 2013
Posts: 247
Location: QLD


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Hey guys

The drills steve mentioned earlier in this thread re: zipties holding the motors on from what I can gather based on what he wrote, sound just like the new 12v Ozito drills I purchased they are a Type 1 according to the sticker on the side of them anyway.

As for the $20 K-mart drills I've read about are they type 1 ? or 2 ? and are all the gears steel/metal ? The Ozito's have all metal gears but a crappy gearbox to motor mount scenario twist on with the two locking pins.

So if any one knows of a decent 12v drill that has a screw on gearbox with metal gears that does not cost the earth please let me know, hell even if it cost the the earth let me know, pm me if ya have to.

Like everyone looking for a reliable yet affordable and ultimately disposable drill.

Laughing

Post Mon Dec 02, 2013 9:32 pm 
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