Hi everyone,
can someone recommend a motor solution to achieve 250RPM at 12Nm ? I'm looking for an off-the-shelf solution and the least amount of parts / devices involved. Torque requirement is momentary, I don't need 12Nm constant running torque, more like peak torque for 1000ms or so...
Hi everyone,
I'm working on a machine which is mounted in an L shaped enclosure and I'm wondering which of the following configurations is more stiff:
The left one is a config with two up-side-down L parts being the sides and multiple rectangle shaped parts locked between it. The right one...
Hi guys,
I was wondering if anyone has any experience with water mixing 'on the fly', which is basically changing the output water temperature quickly by adding cold water to a normally hot water line. I'm looking at a range of 88-94*C, flow rate of around 180ml-300ml when the whole process...
I've posted some questions in the electrical section of these forums:
http://www.eng-tips.com/viewthread.cfm?qid=265034
and it's been suggested to post here as well for additional pointers, so here we go.
I've got a small boiler (200mm wide, 100mm dia) which has an 3/8" inlet hole, a solenoid...
Hi guys,
I've got a 2kW heater which is controlled by a PID done using a suitably rated SSR (actually a bit over-the-top one as it's 50A, but I didn't want to buy another lower-rated one). This is inside a machine which has other PID controllers, two solenoid valves and some electronics, all...
Hi everyone,
I’m mounting a stainless steel boiler (quite a small one, roughly 20cm dia, 30cm wide) on a small frame made out of 1.5mm stainless steel flat and L shaped pieces. Because the boiler is going to be heated up to around 95*C for quite a while I’d like to put something between the...
Hi guys,
I've got a small stainless steel rotary pump which has 3/8" NPT female threads and I'm trying to mount some 3/8" NPT male - 3/8" BSPP adapters (SS as well) on it. I've tried teflon tape but no matter what I do I can't remove a leak from one of the adapters. I've tried various torques...
Hi guys,
I recently got a stainless steel body rotary pump which has 3/8" NPT female connectors. I'm in the UK and I'm having quite a hard time finding stainless steel 3/8" NPT-BSP male/male adapters. Do you think it's ok to use brass ones instead? they are easily available, but I'm a bit...
Hi guys,
I've got a 250W single phase motor with a start capacitor and I'd like to hook up a VFD (variable frequency drive) to it. Is something like this at all possible? If not what else can I use to control the speed of such a motor?
Regards,
Tom
Hi guys,
I've got a rotary pump which has a built in bypass valve and is normally used in beverage machines. You can set the bypass valve to lower the maximum pressure to pretty much whatever value you want, but it still pumps a lot of water, somewhere in the range of 170L/h. It is powered by a...
Hi everyone,
I've built a small ucontroller based motorized valve which uses a stepper motor to drive a valve (small, 1/2" valve). The valve sits on a bypass loop which is connected to a rotary pump. The rotary pump produces 9bar of pressure and the valve on the bypass loop is there to lower...
