Forum

Water Jets

"...DG if you have a 3d printer you must have the design software for it too - otherwise its useless ..." I said I 'can get one printed'. Dodgy Geezers can call in favours from all sorts of places! And not only plastic de machines either - stereo lithography or selective laser sintering (if you want to 3-D print in tungsten) would be available through university contacts. As would design modification...Though, given how long it took me to get a pair of rather specialist gears lapped the last time I wanted a set, I would match RN's comment in saying that I wouldn't hold my breath!

5 years ago by DodgyGeezer

Forum

Fishtailing

DG, that's 2006, 13yrs ago when most people were still on FM. Most of that stuff probably doesn't apply these days with 2.4. We used to have a narrow 'hot spot' with FM around that time on our local 'unofficial' flying field (now a huge mall) and we put it down to perhaps being between 2 cell phone towers or an underground power cable. We even asked surveyors who were using satellite ing equipment in the area but their frequency was so high and of low power so was ruled out. With 2.4 you don't get that sort of problem (maybe if you flew in front of a TV station transmitting dish or similar) but the whole idea of 2.4 was to alleviate all of the old problems. If you have a very cheap 2.4 set with a low scan rate you may get the odd problem close to a power source, (or standing next to someone with a powerful Futaba or similar) but on the whole, very few problems, (just check how far away they can fly Quads etc using Cloverleaf antennae and relays etc using 2.4) John B

5 years ago by jbkiwi

Forum

CNC boat kits...?

"...I suppose depending on the cutting head you will be able to cut thin sheet plastic?...." The basic machine is just a precise 3-D ing device. You then tie anything you want onto the end, depending on the job you want to do. A router or a laser will cut wood, a milling bit will cut metal, a knife will cut vinyl or paper. A plastic extrusion head will let you build up plastic shapes, a pen would let you write letters, and I suppose a paint brush would let you create watercolours... For every material there is a workholding requirement, and a set-up and run optimisation process to undertake, but the principle is simple.

5 years ago by DodgyGeezer

Response

Re: Enclosing the controls.

Hi Alan. You are correct, I had tucked that leg of the aerial alongside the ESC and probably would have used that but I'll take your advice and move it away as far as practical. I'll put it in a thin plastic tube at the front of the enclosure so it will be correctly distanced as you rightly suggest. I had not considered that any nasty RFI from the ESC (or any other acronyms 😉) would be an issue with 2.4G kit. The other leg of the aerial is passed through a hole in the side wall of the well deck into the hull cavity and extends forward, it's also above the waterline too so that should be OK. The aerial wires will be at 90 degrees to each other which I know is desirable too. BTW. I have developed the fan cooling of the motor a bit more so I'll post an update on that soon 😁. Thanks 👍👍. Rob.

5 years ago by robbob