Starting Point

**zoll** · 1st April 2010, 15:43

Sorry to still be boring you all with all my questions but I really do apprieciate all the help you give me. I've remade my little rig for my axe out of slightly stronger wood while i learn how to work with metal and ive notice the gear reduction through just the chain and sprocket that I have on it is really not enough and I some how need to gear it down further to produce more torque. How would I go about making a gear box to go this? Thanks again Matt

**psycho_fling** · 1st April 2010, 15:58

to make a gear box you would need gears instead of the chain and sprocket approach (can be done but will be quite large)

usually you would need a 2 stage reduction gear box in order to get to the desired torque or speed

any parameters we can look at as to current spec and the desired figures??

**zoll** · 12th April 2010, 14:43

Anyone know what size box section is good for making a frame and where I can get some?

**typhoon_driver** · 12th April 2010, 20:43

For a featherweight look at 10mm by 10mm or 15mm by 15mm and a mm or two thick steel box section. You can roughly calculate what weight your chassis will be by working out the weight per mm length of box section and then total it up based on how much box section you would use. For a supplier best to look locally. Look in the yellow pages for a steel or metal supplier.

and with regards to gearing your axe down, calculate the gearing that you need and then we can better advise on what would be the best method for gearing.

**zoll** · 22nd April 2010, 09:24

will 10mm be thick enough sounds very thing to me?

**psycho_fling** · 22nd April 2010, 15:08

id go for some of the stuff i have on offer to you that way you will make sure there will be no problems

**typhoon_driver** · 22nd April 2010, 15:16

For a featherweight 15mm wide box section is fine if you go for a 2mm wall thickness, 10mm may be a bit thin yeah. If you are planning on taking on spinners then I wouldn't look to use a box section chassis but for non spinner fights it will be more than enough.

**zoll** · 19th May 2010, 19:57

Hi again not got anything really done over the last few weeks am busy with university exams... my finals

but am just having a bit of a break.

Ive come to a bit of a dilema with my robot as in I want to start making it out of metal but have a few dilemas. Main dilema is that I need a welder and dont know wether to go for something like a cheap and chearful arc welder that will probably set me back Â£80ish pound after all gear is brought or wether to go for a DIY mig something like the clarke 90 with gear and gas would probably be around Â£300.

Also is a box frame the way to go or is there a better way to do it?

**psycho_fling** · 19th May 2010, 20:45

a box frame is a great cheap and easy way to learn welding etc

you can also make it all out of bulkheads, i.e sheets put together like a jigsaw puzzle then weld or bolt

might be easier to advise if you post a picture of the frame you wish to make

alex