You can measurebate all you want but you won't use much more than the capacity from a 3Ah pack. I've run a few high powered discs and never used much more than 2 to 2.5Ah from a pack and that's running it non stop for an entire 3 minutes
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You can measurebate all you want but you won't use much more than the capacity from a 3Ah pack. I've run a few high powered discs and never used much more than 2 to 2.5Ah from a pack and that's running it non stop for an entire 3 minutes
Ewan, you mentioned using Nylon as a chassis material. Where would you advise getting it from an do you know what the density is. Solidworks is giving me 2 options, one with a density of 1400kg/m^3 called Nylon 6/10 and another at 1150kg/m^3 called Nylon 101?
At 10mm thick for all parts the chassis weighs 2Kg in 6/10... which given as I have cut the back off seems a little strange...?
Here you can buy sheets of Nylon 6. http://www.directplasticsonline.co.uk/N ... Sheet.html
I believe many people use that site for HDPE and such as well.
I found this site...
http://www.nyltek.com/pdf/SAFETY.pdf
in an attempt to find the density of Nylon 6 and it has given me...
Specific Gravity / Density: 1.0840g/cm3
and this one for Nylon 66
http://www.theplasticshop.co.uk/plastic ... _sheet.pdf
which says 1.14 g/cm3
Does anyone think that these are wrong or unreliable?
The link that Ellis gave (http://www.directplasticsonline.co.uk/N ... Sheet.html) is a good source and where I get mine. Here's the datasheet for the natural (white) Nylon 6 they stock http://www.directplasticsonline.co.uk/p ... t_Cast.pdf with a density of 1.15g/cm^3
A 2kg chassis seems reasonable for a feather- where's the remainder of your weight going if it's still too much?
I will have 2 GR-1 motors (Got them today :) ), 2x 30A electronize ESC's, 1x 40A Electronize ESC, 1x Speed 900, 2x Technobots Blue wheels, then probably a linear actuator to act as a shrimech and flipper, and I am looking into getting lipols onsteda of my NiMH's so combine that with loosing 2 motors and 10cm of body work it should all fit in :)
Quote:
Originally Posted by Eventorizon
If the 40a speedo was for the speed 900 I would get a bigger speedo to be on the safe side e.g victor 883
Quote:
Originally Posted by Eventorizon
What are they? Do you mean robo challenge or banebots?
Done it again, the Robochallenge blue wheels and yeah the 40A ESC was for the Speed 900BB, will it definately blow cos I have already ordered it!
well most people who use speed 900's use victors.
as its a spinner your motor will stall if you have a low ratio and hit another robot, so its just to be on the safe side soo you dont blow the speedo.
another way to get round this is to put a fuse in so you dont blow the speedo, and blow the fuse instead
I was going to go for a 4:1 ratio with speed 900 so the disc will spin at about 1400RPM, is that enough of a drop?
I was also going to fit a massive heat sink if that will make a difference...