RC Mower
- Adverse Effects
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RC Mower
ok before i spend more time looking something occurred to me
are you going to direct drive the wheels or chain drive them
because ether way you are going to have to turn the motors and the wheels as a unit
also do you know if you can get hubs for those motors? for the wheels? because there splined axels
if your going all wheel drive all wheel stear i would use something like these
2X 4.10 - 4" Inch Wheel Rim + Tyre $63.99
if you are going 2 wheel drive i would use 2 of the above and 2 of these
2x 145/70- 6" Inch Wheel Tyre $62.90
4 wheel drive you should be good with 100mm wide on all 4 for grip
also i dont see a disengage level to make them free wheel how are you going to move it if something go's wrong with the drive system?
umm why did you over look this motor?
Worm Drive Motor 12V/24V 200W, 180 RPM, 20Nm Torque even tho it says there is no 24V in stock i think you will find the 24V is the same as the 12V just gives more speed and torque just shoot them a email to ask
granted it dosent have a disengage level but you can mount it to the down arm and hang a wheel directly off it similar to the same way my ones mount
by the way dont forget to add the shipping 4 of thos motors you linked to would cost almost $40 to ship to me in a big city may be more for up there
i am sure i will think of more things but i am over heated and tired at the moment from having spent over 4 hours fighting with bigpond / telstra
are you going to direct drive the wheels or chain drive them
because ether way you are going to have to turn the motors and the wheels as a unit
also do you know if you can get hubs for those motors? for the wheels? because there splined axels
if your going all wheel drive all wheel stear i would use something like these
2X 4.10 - 4" Inch Wheel Rim + Tyre $63.99
if you are going 2 wheel drive i would use 2 of the above and 2 of these
2x 145/70- 6" Inch Wheel Tyre $62.90
4 wheel drive you should be good with 100mm wide on all 4 for grip
also i dont see a disengage level to make them free wheel how are you going to move it if something go's wrong with the drive system?
umm why did you over look this motor?
Worm Drive Motor 12V/24V 200W, 180 RPM, 20Nm Torque even tho it says there is no 24V in stock i think you will find the 24V is the same as the 12V just gives more speed and torque just shoot them a email to ask
granted it dosent have a disengage level but you can mount it to the down arm and hang a wheel directly off it similar to the same way my ones mount
by the way dont forget to add the shipping 4 of thos motors you linked to would cost almost $40 to ship to me in a big city may be more for up there
i am sure i will think of more things but i am over heated and tired at the moment from having spent over 4 hours fighting with bigpond / telstra
- EV2Go
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RC Mower
If I used these I would direct drive as they already have a spindle ready to go and gear reduction done.
I have looked around and there seems to be quite a few splined hubs around that something is bound to fit.
And if I went that direction I would probably find some small four bolt hole rims and tyres, I saw some the other night.
There are bolt holes in the body of these ones so I foresee the motors bolting to some kind of rotating upright tube.
Yes would be nice to have a redundancy plan but I'm sure I would work something out in the case of failure.
The Controller that go with seem fairly smart to provide things like braking and reverse.
I'm only 25 minute away from where I used to live so I'm hardly in the sticks, besides I've been told Ipswich is a city (although I am yet to see signs of it)
I have looked around and there seems to be quite a few splined hubs around that something is bound to fit.
And if I went that direction I would probably find some small four bolt hole rims and tyres, I saw some the other night.
There are bolt holes in the body of these ones so I foresee the motors bolting to some kind of rotating upright tube.
Yes would be nice to have a redundancy plan but I'm sure I would work something out in the case of failure.
The Controller that go with seem fairly smart to provide things like braking and reverse.
I'm only 25 minute away from where I used to live so I'm hardly in the sticks, besides I've been told Ipswich is a city (although I am yet to see signs of it)
Last edited by EV2Go on Fri, 13 Jan 2017, 20:50, edited 1 time in total.
- Richo
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RC Mower
EV2Go wrote:This is an incomplete idea of what I have in mind
Adverse Effects wrote: So if you look at his pic you will see clearly 3 blades not to mention we have been discussing this fore about a week b4 this thread in emails
Yeah the picture isn't "clear".
It shows one big motor for the blade.
Not too sure how anyone was suppose to interpret this as a three blade mower.
I've built that bridge...
So the short answer is NO but the long answer is YES.
Help prevent road rage - get outta my way!
Help prevent road rage - get outta my way!
- Richo
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RC Mower
Adverse Effects wrote: umm why did you over look this motor?
Worm Drive Motor 12V/24V 200W, 180 RPM, 20Nm Torque
They're the golf cart motor+box right.
I butchered one of those and coupled it to a 500W motor.
That was just enough to get it around the golf course with the golfer riding it.
I guess ~120kg on smoothly cut grass.
So you'd have to go AWD for rough terrain and 300kg.
So the short answer is NO but the long answer is YES.
Help prevent road rage - get outta my way!
Help prevent road rage - get outta my way!
- Adverse Effects
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RC Mower
Richo wrote:Adverse Effects wrote: So if you look at his pic you will see clearly 3 blades not to mention we have been discussing this fore about a week b4 this thread in emails
Yeah the picture isn't "clear".
It shows one big motor for the blade.
Not too sure how anyone was suppose to interpret this as a three blade mower.
I've built that bridge...
hmmm
2 posts above you saying i was changing the design
- EV2Go
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RC Mower
Just to set the record straight. It makes sense to go AWD if possible and it seems it is (I wouldn't use the method shown, that is for illustration purposes only, as it was quick to draw).
I would like to go all electric to power the mower blades, but I think that is a battle for another day. So for now it's petrol for convenience and potentially a generator for the wheel batteries.
Here are some of the block photo when we first got it. It's not perfectly flat but it will get some work before construction. Although it will never be flat.
I would like to go all electric to power the mower blades, but I think that is a battle for another day. So for now it's petrol for convenience and potentially a generator for the wheel batteries.
Here are some of the block photo when we first got it. It's not perfectly flat but it will get some work before construction. Although it will never be flat.
- Adverse Effects
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so when is the BIG billabong be going in so you can stock it with fish and yabby's/crawfish
*thinks of sitting back in the late arvo with a drink and a rod*
*thinks of sitting back in the late arvo with a drink and a rod*
- Adverse Effects
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wow is that shed on your lot?
if so ! SCORE !
if so ! SCORE !
- EV2Go
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Nope the shed is just on the next block. Picture 5 shows a drop off near the shed (neighbours shed is lower than my block). Picture 6 shows the other boundary (chain wire fence), so the main block is 70m deep by 20m wide. Picture 1,2,3 shows the ~40m long x 5m wide concrete driveway which is on my property. Picture 4 shows my front fence of main block and a small retaining wall will go in that low spot to build it up about 600mm.
Here's the view from the back balcony. The blue line is where there is a deep dry creek bed that goes around the back and side of the property stopping anyone from building out our view
Here's the view from the back balcony. The blue line is where there is a deep dry creek bed that goes around the back and side of the property stopping anyone from building out our view
- Richo
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RC Mower
Nice one
Sometimes when my grass gets that long I wish I had a combine harvester.
The mower just struggles.
I still don't think skid steer is an issue.
That is unless your trying to make it spin on the spot repeatedly.
So the short answer is NO but the long answer is YES.
Help prevent road rage - get outta my way!
Help prevent road rage - get outta my way!
- Richo
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RC Mower
Although this is not the one I saw where oversized wheels were bolted on it at least gives you an idea of how the wheel was bolted through the back plate.
https://endless-sphere.com/forums/viewt ... 35&t=81756
https://endless-sphere.com/forums/viewt ... 35&t=81756
So the short answer is NO but the long answer is YES.
Help prevent road rage - get outta my way!
Help prevent road rage - get outta my way!
- Adverse Effects
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RC Mower
EV2Go wrote: Would wheel motors produce the same amount of torque as geared motors?
no
that was simple
if you put a hub motor and ran it through a g-box or reduction drive yep but watt for watt no
-
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RC Mower
Will this be bump steer as in when it runs into something it reverses with steering turned till it hits something else, then forward straight?
or
embedded wire sensing steer where it reverses direction and steps sideways one mover width each time it senses the embedded wire
or
sitting back in the deck chair with cold beer in hand and a remote control and steering it that way?
T1 Terry
or
embedded wire sensing steer where it reverses direction and steps sideways one mover width each time it senses the embedded wire
or
sitting back in the deck chair with cold beer in hand and a remote control and steering it that way?
T1 Terry
Green but want to learn
- Adverse Effects
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option 3
- Richo
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EV2Go wrote: Ok at least I now know what you are talking about when you mentioned a hover board, I was thinking back to the future but there are no wheels.
Yeah I should have clarified that.
Hover board/balance board/balance wheel
They're the ones that the aeroplanes now don't allow on board and catch fire when you look at them
They have manufacturing issues that causes the casing to cut into the battery pack then catch fire when you charge them.
And the charger was deemed not usable in Oz as they weren't compliant.
That's why there's a few around 2nd hand.
Plus people use them a bit and then get board or just don't like them after a while (novelty factor).
They are rated for carrying ~130kg around at a bit faster than walking speeds.
So four would be 1400W(claimed) 260kg at walking speed.
So I'd think the torque is reasonable for a mower - assuming traction was met.
Single sided axle, no gears, no pullies, awd...
I already have a bunch laying around with controllers.
Been meaning to get around to testing them
So the short answer is NO but the long answer is YES.
Help prevent road rage - get outta my way!
Help prevent road rage - get outta my way!
- EV2Go
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RC Mower
T1 Terry wrote: Will this be bump steer as in when it runs into something it reverses with steering turned till it hits something else, then forward straight?
or
embedded wire sensing steer where it reverses direction and steps sideways one mover width each time it senses the embedded wire
or
sitting back in the deck chair with cold beer in hand and a remote control and steering it that way?
T1 Terry
Adverse Effects wrote: option 3
Yep it may even be a lazy mans version of option three, where I mount cameras on the mower and sit inside on a comfy couch to drink that cold beer
I have a mate in England who is big into FPV helicopters and planes, and he has given me the skinny on the parts I need. A couple of hundred extra would make it a remote remote.
- EV2Go
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But this is where I think Ivan is right about the traction. You can see the terrain from the photos, up some steepish slopes in places (and down) trying to cut through grass while moving forward, is a far cry from moving a person on a concrete path.Richo wrote: They are rated for carrying ~130kg around at a bit faster than walking speeds.
So four would be 1400W(claimed) 260kg at walking speed.
So I'd think the torque is reasonable for a mower - assuming traction was met.
Apart from the additional weight (and 130kgs is probably a gross marketing exaggeration) the massive drag 2 or 3 blades cutting long grass would add, it really needs wide tyres and oodles of torque.
So perhaps 350w per wheel isn't enough?
- Adverse Effects
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EV2Go wrote:But this is where I think Ivan is right about the traction. You can see the terrain from the photos, up some steepish slopes in places (and down) trying to cut through grass while moving forward, is a far cry from moving a person on a concrete path.Richo wrote: They are rated for carrying ~130kg around at a bit faster than walking speeds.
So four would be 1400W(claimed) 260kg at walking speed.
So I'd think the torque is reasonable for a mower - assuming traction was met.
Apart from the additional weight (and 130kgs is probably a gross marketing exaggeration) the massive drag 2 or 3 blades cutting long grass would add, it really needs wide tyres and oodles of torque.
So perhaps 350w per wheel isn't enough?
100 watts would be enough as long as its geared down enough but you lose some speed gearing it down that far
hence making it 200 to 350 watts and gearing it down to the final drive speed needed
- EV2Go
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Ok I was on the right track to begin with. So I guess the only question that needs to be asked is external chain or internal gears. Gears would make more sense to me as they won't get grass in them. Or you mentioned a worm drive, any advantage of worm drive over gears?
Last edited by EV2Go on Thu, 19 Jan 2017, 05:02, edited 1 time in total.
- Richo
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You "could" push gears not the worm drive.
The worm drive can get much higher ratios but probably not relevant for this application.
The worm drive can get much higher ratios but probably not relevant for this application.
So the short answer is NO but the long answer is YES.
Help prevent road rage - get outta my way!
Help prevent road rage - get outta my way!
- Richo
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Still not it but you get the idea.
You can see the bolts sticking out the rim.
You can also see the hoverboard wheel in the hub hole.
You can see the bolts sticking out the rim.
You can also see the hoverboard wheel in the hub hole.
So the short answer is NO but the long answer is YES.
Help prevent road rage - get outta my way!
Help prevent road rage - get outta my way!