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Im sure some of you have noticed that Woody has been posting in tons of the threads all over this forum helping people... from information on sprockets and LAs and wiring... all the way down to looking on Ebay to stuff for people... sooo , any questions about Robots, Bits, Part,s or event about life, just ask Woody here and im sure he will answer. LOL!!!
ASK WOODY LTD ....
Mr Stu
For one, you shouldve asked Woody to start this thread. :proud:
Tis how you started Stu.
ASK WOODY
Woody what gearing should i use on the bosh 400s i got the 12v ones run at 24v to a 10 ins wheel ???????? :):):)
chain drive by the way :):):)
That very true, we all started somewhere, woody taught me a hell of alot, and even today still bringing new roboteers into the group....
Mr Stu
@ Pete .....Go work it out yourself :)
http://www.teamtornado.co.uk/ssheet.htmhttp://www.teamtornado.co.uk/ssheet.htm
Download the spreadsheet and enter the numbers .....it includes the Bosch 400 watt motor.
Pete, depends on wished for end speed.... or do you want an educated guess.
Pete, ask Iron Awe what gearing they used for the bosch 400s. Then dont use it, according to Ian Watts its probably the reason why their roboteq and wotty have blown up.
TRIAL AND ERROR HERE WE COME ..........
LOL !!!!
12 to 1 is my guess so thats where im going unless ........... anyone has any thoughts on this .. as for working it out 12 to 1 sounds good to me :):):)
@ 24 volts ratios are........assuming summat like 6,400 rpm
19.04 to 1 for 10 mph
15.867 to 1 for 12 mph
12.694 to 1 for 15 mph
(Message edited by woody on May 16, 2007)
so 17mph is wahoooo :P:)
http://www.4qd.co.uk/faq/roadspd.htmlhttp://www.4qd.co.uk/faq/roadspd.html
Another usefull utility.
Thats not to say youll have the amps etc to run that 12-1 ratio.
Woody, Im not sure whether to have chicken fried rice or chicken chow mein from the chinese tomorrow. What would you recommend?
Dave
Tsk ....very unhealthy ....Id recommend Sushi and a helping of prunes:).
Damn, not got any sushi bars in Exeter! Might have to settle for a tin of prunes from Tescos then
Whats the best way to open a tin without a tin opener using only what can be found in the standard kitchen? (a problem I came across the other day)
a hammer - thats what i used for the first few months at uni.
Angle-grinder, works all the time. :)
But the tin into the oven at gas mark 8 for 30 mins..... Itll open all by itself.
Or you could try it in the microwave for 30 seconds. That should do the trick too!
lol thanks for the answers. Incidentally I thrust a blunt knife in several times (until it punctured) and then used it like a tin opener when inserted :)
Babs and I have problems Bliep/Bliep and Bliep... euhm.... let us leave that out....
On the can problem. I have seen what happens with a can of wieners on a gas flame. A painted kitchen with the color and smell of wieners. The can opened a small pinhole and sprayed everything out with the steampressure.
On the gearing problem. Pete, if you can keep the motors cool, you could try for the 12/1 gearing, with a good current limited speedo.
But in the end, the advantages the Bosch 400s have on Graupner speed 900s are the higher torque due the bigger diameter and the higher heat sink capacity due weight.
In Gravity bosch 750s were run on 10 kart wheels, with a 20/1 dual stage reduction
and limited to 36V 75 amps. I doubt anyone would call Gravity slow or not powerfull.
woody
how do i get robot bits past my other half
she has eyes like the hubble telescope, and sees right through me! Im desperate for new stuff, but ill end up in the dogs house....
please help
Buy a large perambulator and take your progeny for a breathe of fresh air.... this must be done routinely and on a regular basis or the all seeing one will become suspicious.
Trips can then be made to retrieve small items ( previously concealed under a hedge or similar ) that can easily be hidden under the childs duvet and smuggled in .... larger items.. such as Eteks.. take up a lot of room and it may mean a temporary swap ...Etek in .....child out.
Was gonna start a new thread for this when I actually got round to asking it but since this thread is here, I may as well ask now :)
Will a pair of Electronize 30A with the external relay mods be able to control two Bosch 400s run at 12V in a featherweight driving wheels through friction-drive on a ratio of 7.12:1 without regularly damaging either the relays or the speedos?
Hi Woody / pete
My latest creation ( see pic on profile) uses bosche 400w....i have coupled them to standard parvalux gearboxes at 16:1 gear ratio attached to 10 kart wheels...acordin to my robo gurus this should give me approx 11.5 MPH....plenty enuff for us old farts with bad drivin reaction times..
I have also built a 576:1 gearbox coupled to bosche 400w to use as a lifing device...fingers crossed ...it should do the job...
Cheers Tony (aka Froggy)
Oh and if the answer to my question above is No, they will blow up regularly then...
Woody,
Can you tell me the lottery numbers for this coming Saturday so I can afford to go and buy some nice speedos (of the non-swimwear variety) :)
(Message edited by K_C_R on May 17, 2007)
@ Jamie No and No.
@ Tony ....Im impressed ...looks v.good on your budget!
Mario, regarding Bleep 1: you do know we dont have space in the house for more machines without chucking out important furniture, like the bed, the kitchen stove of your computer. Bleep 2: I also want to keep that garden of mine. Intact. With the grass, the flowers and the cat-mint. And as for bleep 3: no, the house front stays as it is.
Why bother Guru Woody with such mundane problems ?
Woody,
As you are the guru to all things robotic:
Did the FRA get my application form and cheque after???
Woody, has Mr. Stu started threads like this before?
And Stu, Im asking Woody, not you. :proud:
Stu has got a lot to answer for ....to the best of my knowledge this is a first.
:rofl:
Mr Stu
Stus punishment....
Video of his first ever bot.
http://www.youtube.com/watch?v=JqT-e_Wd9qIhttp://www.youtube.com/watch?v=JqT-e_Wd9qI
He had a transmitter , receiver and servos for Xmas 2001.
His second attempt is much better :)
Feb 2002
http://www.youtube.com/watch?v=F4wM7w5c6Fshttp://www.youtube.com/watch?v=F4wM7w5c6Fs
(Message edited by woody on May 17, 2007)
LOL!!!!! I remember getting my transmitter kit and just wanted to build something that MOVES! Least it moved. LOL good old days! LOL.... In the second video you see that disc go very close to my TFT screen i used to have.. mum has that screen now and theres still 3 deep cuts in the bottom of it. LOL.
Fair Play Woody :proud:
Mr Stu
:rofl:
Was that a LEM onto a Hardox disc you had running there? :)
What did you use as a disc and motor? The spinning ant I built used a CD drive motor from a PC which meant I had to carry a 9V battery on board if I wanted any decent speed/power. Then I took one of those round shiny discs from an old hard-drive, bolted some teeth to it, then fixed that to the motor shaft. Never took any videos of it though :sad:
I think it was one of the drive motors that came with that Cybot from Real Robots Mag. Then yeah it just had a 9v battery there, used a servo to touch 2 peaces of wires together to turn it on. It wasnt an ant, just a bot i made with the spare servos i had to play with. The disc is the bottom of a coke can. LOL Then super glue to the motor shaft. Very safe. LOL. I bleieve the motor was about 12,000rpm at 4.8v and was running it at 9v, so god knows how fast it was going... waited for it to spin off. LOL!!
Mr Stu