Myford Super 7 lathes are very popular amongst model engineers in the UK, what do people aspire to in the US?
Space is a big issue here so a larger ex-industry machine is not as attractive as it might seem
I did this, once, I sawed a small piece off in the chuck of my dad's Unimat 3, (a really well made but tiny little lathe) using a Jr. hacksaw, whilst the chuck was spinning.
As the blade cut through it made a lovely neat notch in the lathe bed, something that I had to look at each time i used...
Definitely need something because parting off wheels 80mm in diameter is not happening, poor lathe isn’t rigid or powerful enough. I know I need a bigger lathe!
Actually a horizontal band saw will probably do,
The dimension error was corrected and a useful check was to put the two wheel...
I’m back on the lathe making wheels and losing the will to live, and to make matters worse my lathe is maxed out with the size of the bar stock, here it is gingerly facing off.
Having trouble loading images but they have attached in order.
Then I had fun playing with the ‘bolt circle function’...
You raise a good point @ahr43 the tethers are made up and tested, the heavy duty one that I have ‘been assigned’ is slightly longer which means that my car runs right at the edge of the track where it isn’t quite so smooth, I can’t change the tether length but I might shorten the tether...
It seems he runs the real thing, his models look very smart 3.5, 5 and 10cc on tuned pipes.
Big money too, he tells me that he gets his parts when attending competitions in mainland Europe
I do hope these tires work, it would be good to concentrate on other factors, which include me working on...
Hi @WickedFog sadly I don't, it would be nice!
"Freak on a Leash." was from your side of the pond, the "lump of angle" mine! Cultured I am not! :0)
Yes lets see how fast it can go if the wheel stay on, my 30T pully turned up today so I will have a new gear ratio of 3:4 compared to the...
I am going from 80mm to 89mm dia, but as you say quite a jump. I can only hope that I can hold back the rpm and that it doesn't run out of torque.
The chap who leant me the wheels and donated the tires was running them on an IC car, his car typically get to 160mph I think, I believe he holds...
Smooth, I am still trying to figure out the dims, if I measure them, then superimpose the CAD drawings of the two half wheels I get a gap at the outer edge of 5.1mm and yet when I do the same to the actual parts it get 4.2mm ! something wrong here. I'd better keep hold of the wheel until I am...
Pictures show a pair of 'lightly used' matched tires (kindly donated to my cause by a kind fellow who runs his cars at the proper Buckminster track in the UK) and a wheel which is on loan for me to copy. The working face of the tire is about 4.5mm wide. overall diameter 89mm.
My next job is to...
I have been offered some tires, apparently good for 200mph and a loan of a wheel to copy.
Pictures when they arrive.
Is there an emoji for nervous/excited ?
My original wheels do have a 0.6 m deep lip at the edge which produced a pronounced indentation in the plain rubber tires, but clearly this isn’t enough, I did think about cutting a grove to align with the lip/groove but again I don’t think this will be enough. The clever fast tires trap a round...
OK here's a new train of thought, I now know from practical experience that making stuff that doesn't break apart when spun to to speed is hard!
So does someone already make "something which has to be spun up very fast without falling apart or injuring someone?" and "do some of these have a...
Yup its a right pain, cost is OK but the time required is stressing me a bit, I have other important stuff to do on real vehicles!
Responding to @WickedFog a moment back, I agree I don't want to puncture the tire anywhere that would just tear.
The retro wheels I used most recently are shown as...
Thanks for your thoughts on motors, I suspect the belt myself.
Funny thing is I followed the advised tire fixing to the letter.
I have another plan for the conveyor belt tires but it involves making new hubs and much working of the rubber.
Went to the track today, all was going smoothly then,…..
I brought it to rest just as you seen the picture above on two wheels.
I got up to 65mph, (another new track record!) then there was a noise and the outside rear tire flew off.
It appeared to fly off as one piece and disappeared into...
Regarding the tracking ESC, if I can stop worrying about the tires escaping I could concentrate on building speed more progressively, It would be very helpful and interesting to get that feedback, although the escalating costs and complexity are drifting away from the intended simplicity of the...
Thank you @LibertyMKiii
Ah, the scratch build thing is because electric drive tethered cars are quite new, and kits of parts are non existent, plus I am quite tight with money so the thought of parting with money would encourage me to have a go.
I calculated that 100mph would be about...
Quite so, a rigid tripod is probably the most important photographic/video accessory you can buy, just slightly taken aback at seeing the camcorder :0)
On the subject of video, I recently bought a low cost drone, just for a bit of fun. I would like to take video of the track from above the...