My Model Boat club put on a show two weeks ago and videoed Harley Quinn with my iPhone which is kind of difficult while running the boat because the pusher boats were being run by the kids and I had to avoid them.
{"text":"My Model Boat club put on a show two weeks ago and videoed Harley Quinn with my iPhone which is kind of difficult while running the boat because the pusher boats were being run by the kids and I had to avoid them.","subject":"Second test run of the Harley Quinn","media":[],"youtubeUrl":"https://www.youtube.com/watch?v=9WKFNCuxjYI"}
My Model Boat club put on a show two weeks ago and videoed Harley Quinn with my iPhone which is kind of difficult while running the boat because the pusher boats were being run by the kids and I had to avoid them.
Working on this idea for a bit more refinement on the exhaust smoke idea. Graham mentioned these timers were worth a look, so I purchased a few from Ali Express for about 90c each. They work well for an off/on set-up but not quite as well for an on/off set-up. They are variable from 0-12 secs and have a lot of possible uses. I was trying for a puff of smoke at start-up (which in my application works in conjunction with the twin sound units (HSL and ST) and this initial test seems to work ok (bit of refinement with timing and air pump speed required yet). Already have the smoke going well but there's always a little morsel to add (ref Mr Creosote)
I'll be using the small 5A voltage regulating bucks in the models (the ones shown are just for testing) with one 2s LiPo running 2 regs,- one for pump, and one through the timer for the smoke pen. You can see the timer working with no input from the TX in the vid, When fitted, both will be switched on/off simultaneously with the solenoid 'latching' power on/off, circuit (thanks to Graham for the layout) using the left stick.
JB
{"text":"Working on this idea for a bit more refinement on the exhaust smoke idea. Graham mentioned these timers were worth a look, so I purchased a few from Ali Express for about 90c each. They work well for an off/on set-up but not quite as well for an on/off set-up. They are variable from 0-12 secs and have a lot of possible uses. I was trying for a puff of smoke at start-up (which in my application works in conjunction with the twin sound units (HSL and ST) and this initial test seems to work ok (bit of refinement with timing and air pump speed required yet). Already have the smoke going well but there's always a little morsel to add (ref Mr Creosote)\n\nI'll be using the small 5A voltage regulating bucks in the models (the ones shown are just for testing) with one 2s LiPo running 2 regs,- one for pump, and one through the timer for the smoke pen. You can see the timer working with no input from the TX in the vid, When fitted, both will be switched on/off simultaneously with the solenoid 'latching' power on/off, circuit (thanks to Graham for the layout) using the left stick. \nJB","subject":"Delay timer for air pump on exhaust smoke for start-up effect.","media":[],"youtubeUrl":"https://www.youtube.com/watch?v=9jyAOu_8udw"}
Delay timer for air pump on exhaust smoke for start-up effect.
Working on this idea for a bit more refinement on the exhaust smoke idea. Graham mentioned these timers were worth a look, so I purchased a few from Ali Express for about 90c each. They work well for an off/on set-up but not quite as well for an on/off set-up. They are variable from 0-12 secs and have a lot of possible uses. I was trying for a puff of smoke at start-up (which in my application works in conjunction with the twin sound units (HSL and ST) and this initial test seems to work ok (bit of refinement with timing and air pump speed required yet). Already have the smoke going well but there's always a little morsel to add (ref Mr Creosote)
I'll be using the small 5A voltage regulating bucks in the models (the ones shown are just for testing) with one 2s LiPo running 2 regs,- one for pump, and one through the timer for the smoke pen. You can see the timer working with no input from the TX in the vid, When fitted, both will be switched on/off simultaneously with the solenoid 'latching' power on/off, circuit (thanks to Graham for the layout) using the left stick.
JB
Re- She picked up speed pretty quickly for her size.
She gets up and goes with 12,750 horse-powers' worth of 3 Bristol Proteus turbines Martin. Not to bad for 139ft ! Rather impressive with 41 knts on tap. Give a few small cars a run for their money!
JB
Re- She picked up speed pretty quickly for her size.
She gets up and goes with 12,750 horse-powers' worth of 3 Bristol Proteus turbines Martin. Not to bad for 139ft ! Rather impressive with 41 knts on tap. Give a few small cars a run for their money!
JB
Here's a short video to show some of the varied and interesting exhibits and features seen at the London Model Engineering Exhibition, Alexandra Palace 17th - 19th January 2020.
Enjoy....😀
Robbob.
{"text":"Here's a short video to show some of the varied and interesting exhibits and features seen at the London Model Engineering Exhibition, Alexandra Palace 17th - 19th January 2020.\nEnjoy....\ud83d\ude00\nRobbob.","subject":"London Model Engineering Exhibition 2020","media":[],"youtubeUrl":"https://www.youtube.com/watch?v=Ar8bwZSyB8w"}
Here's a short video to show some of the varied and interesting exhibits and features seen at the London Model Engineering Exhibition, Alexandra Palace 17th - 19th January 2020.
Enjoy....😀
Robbob.
Glad you like the video Mike.
As you know from your visit to the show last year there's a lot to see and my video only covers a fraction of it but I think it gives a good flavour of the whole show. My brothers Meccano Missouri was a big hit with the public too, he will be showing it again at one of the Warwick model shows later in the year.
Rob.
Glad you like the video Mike.
As you know from your visit to the show last year there's a lot to see and my video only covers a fraction of it but I think it gives a good flavour of the whole show. My brothers Meccano Missouri was a big hit with the public too, he will be showing it again at one of the Warwick model shows later in the year.
Rob.
These are the boats mentioned which didn't add to the original page?
Pete
{"text":"These are the boats mentioned which didn't add to the original page?\n\nPete","subject":"Ally Pally show Jan 2020","media":[{"id":"157973458033","name":"157973458033","caption":"","url":"https://hobby.land/media/157973458033/l","thumbUrl":"https://hobby.land/media/157973458033/s","isImage":false,"ext":"file"},{"id":"157973458454","name":"157973458454","caption":"","url":"https://hobby.land/media/157973458454/l","thumbUrl":"https://hobby.land/media/157973458454/s","isImage":false,"ext":"file"},{"id":"157973459080","name":"157973459080","caption":"","url":"https://hobby.land/media/157973459080/l","thumbUrl":"https://hobby.land/media/157973459080/s","isImage":false,"ext":"file"}],"youtubeUrl":""}
Just a short video of some of the boats at the show, camera battery let me down, but you might recognize a couple of the boats that were there.
Cheers, Pete
{"text":"Just a short video of some of the boats at the show, camera battery let me down, but you might recognize a couple of the boats that were there.\n\n\nCheers, Pete","subject":"Ally Pally show Jan 2020","media":[{"id":"157973458033","name":"157973458033","caption":"","url":"https://hobby.land/media/157973458033/l","thumbUrl":"https://hobby.land/media/157973458033/s","isImage":false,"ext":"file"},{"id":"157973458454","name":"157973458454","caption":"","url":"https://hobby.land/media/157973458454/l","thumbUrl":"https://hobby.land/media/157973458454/s","isImage":false,"ext":"file"},{"id":"157973459080","name":"157973459080","caption":"","url":"https://hobby.land/media/157973459080/l","thumbUrl":"https://hobby.land/media/157973459080/s","isImage":false,"ext":"file"}],"youtubeUrl":"https://www.youtube.com/watch?v=bmrUpJQTNEQ"}
Hooked it up to test exhausts and set the voltage a bit higher (2.6v) to show a bit more smoke. It can go to 3.5V but the test V reg Buck wont handle it (I've fitted a fan but still gets hot quick on 3.6V although not quite as bad.)
JB
{"text":"Hooked it up to test exhausts and set the voltage a bit higher (2.6v) to show a bit more smoke. It can go to 3.5V but the test V reg Buck wont handle it (I've fitted a fan but still gets hot quick on 3.6V although not quite as bad.)\nJB","subject":"LATEST SMOKER MODEL Y HOOKED TO TEST EXHAUSTS","media":[],"youtubeUrl":"https://www.youtube.com/watch?v=ZTjg1cPKHks"}
Hooked it up to test exhausts and set the voltage a bit higher (2.6v) to show a bit more smoke. It can go to 3.5V but the test V reg Buck wont handle it (I've fitted a fan but still gets hot quick on 3.6V although not quite as bad.)
JB
Made a few changes to the pulsing frequency/timing, and to the plumbing where the smoke is mixed with the water. Video shows the pulsing speeding up with throttle setting. Happy with this now, I can adjust the volume of smoke once it is installed in the boat. Probably will need less, but it is difficult to be sure as conditions on the lake are different to those in my workshop!
Graham93
{"text":"Made a few changes to the pulsing frequency/timing, and to the plumbing where the smoke is mixed with the water. Video shows the pulsing speeding up with throttle setting. Happy with this now, I can adjust the volume of smoke once it is installed in the boat. Probably will need less, but it is difficult to be sure as conditions on the lake are different to those in my workshop!\n\nGraham93","subject":"Another Exhaust Smoker V2","media":[],"youtubeUrl":"https://www.youtube.com/watch?v=HidOi9b-avI"}
Made a few changes to the pulsing frequency/timing, and to the plumbing where the smoke is mixed with the water. Video shows the pulsing speeding up with throttle setting. Happy with this now, I can adjust the volume of smoke once it is installed in the boat. Probably will need less, but it is difficult to be sure as conditions on the lake are different to those in my workshop!
Re: I was wondering if adding propylene glycol might make a difference.
Don’t know what effect this would have. I’ll be interested to hear what happens if you try it. I find I have plenty of smoke using plain vegetable glycerine and I can increase or decrease it by adjusting the power to the smoker coil.
Graham93
JB,
Re: I was wondering if adding propylene glycol might make a difference.
Don’t know what effect this would have. I’ll be interested to hear what happens if you try it. I find I have plenty of smoke using plain vegetable glycerine and I can increase or decrease it by adjusting the power to the smoker coil.
Graham93
Re:Had a look on the Microchip site, basic kit not too expensive but, as so often, the stuff you need to make it work well ain't so cheap☹️
I just use the PICKit2, which was cheap, and the free development software. The software lets you run a simulator on the PC where you can monitor your code, single step, set a breakpoint, etc. You can also monitor and change variable values. Some of the more sophisticated PIC16f chips allow you to debug your code running in the target hardware using the PICKit2 as the debug interface to your PC.
Graham93
Hi Doug,
Re:Had a look on the Microchip site, basic kit not too expensive but, as so often, the stuff you need to make it work well ain't so cheap☹️
I just use the PICKit2, which was cheap, and the free development software. The software lets you run a simulator on the PC where you can monitor your code, single step, set a breakpoint, etc. You can also monitor and change variable values. Some of the more sophisticated PIC16f chips allow you to debug your code running in the target hardware using the PICKit2 as the debug interface to your PC.
Graham93
These photos show the stern modified ready to fit up the twin jet units that will power and steer this vessel.
More photos in a week or so.
{"text":"These photos show the stern modified ready to fit up the twin jet units that will power and steer this vessel.\n\nMore photos in a week or so.","subject":"Vietnam River Gun Boat (Pibber)","media":[{"id":"157231386261","name":"157231386261","caption":"","url":"https://hobby.land/media/157231386261/l","thumbUrl":"https://hobby.land/media/157231386261/s","isImage":false,"ext":"file"},{"id":"157231396928","name":"157231396928","caption":"","url":"https://hobby.land/media/157231396928/l","thumbUrl":"https://hobby.land/media/157231396928/s","isImage":false,"ext":"file"},{"id":"157231404283","name":"157231404283","caption":"","url":"https://hobby.land/media/157231404283/l","thumbUrl":"https://hobby.land/media/157231404283/s","isImage":false,"ext":"file"}],"youtubeUrl":""}
Looking forward to seeing what you used for jet drives - always wanted to modify a Tamiya PBR but the drives would be impossibly small - certainly no commercial ones available for 1/35 scale.
What hull was it that you used ? Looks like a good one.
Looking forward to seeing what you used for jet drives - always wanted to modify a Tamiya PBR but the drives would be impossibly small - certainly no commercial ones available for 1/35 scale.
What hull was it that you used ? Looks like a good one.
Very interesting build sandkb, always fancied a build of one of these, since my build of a 1/35 plastic kit,
as redpmg requests, I would also like to know what jet drives you used, and the scale of the hull.😐
Cheers, Peter
Very interesting build sandkb, always fancied a build of one of these, since my build of a 1/35 plastic kit,
as redpmg requests, I would also like to know what jet drives you used, and the scale of the hull.😐
Cheers, Peter
At last after 8 months I've finished my Vietnam River Gun Boat.
I've built this vessel using a made up fibreglass hull that pretty much measured up to the 1/9th scale with some modification that I wanted.
I will post photos of the build of the build over the next few weeks and answer any questions as they arise.
These pics show the initial hull modification underway.
{"text":"At last after 8 months I've finished my Vietnam River Gun Boat.\nI've built this vessel using a made up fibreglass hull that pretty much measured up to the 1/9th scale with some modification that I wanted.\nI will post photos of the build of the build over the next few weeks and answer any questions as they arise.\nThese pics show the initial hull modification underway.","subject":"Vietnam River Gun Boat (Pibber)","media":[{"id":"157231215797","name":"157231215797","caption":"","url":"https://hobby.land/media/157231215797/l","thumbUrl":"https://hobby.land/media/157231215797/s","isImage":false,"ext":"file"},{"id":"157231232679","name":"157231232679","caption":"","url":"https://hobby.land/media/157231232679/l","thumbUrl":"https://hobby.land/media/157231232679/s","isImage":false,"ext":"file"},{"id":"157231239598","name":"157231239598","caption":"","url":"https://hobby.land/media/157231239598/l","thumbUrl":"https://hobby.land/media/157231239598/s","isImage":false,"ext":"file"},{"id":"157231250035","name":"157231250035","caption":"","url":"https://hobby.land/media/157231250035/l","thumbUrl":"https://hobby.land/media/157231250035/s","isImage":false,"ext":"file"},{"id":"157231254149","name":"157231254149","caption":"","url":"https://hobby.land/media/157231254149/l","thumbUrl":"https://hobby.land/media/157231254149/s","isImage":false,"ext":"file"}],"youtubeUrl":""}
At last after 8 months I've finished my Vietnam River Gun Boat.
I've built this vessel using a made up fibreglass hull that pretty much measured up to the 1/9th scale with some modification that I wanted.
I will post photos of the build of the build over the next few weeks and answer any questions as they arise.
These pics show the initial hull modification underway.
Interested in your build of the Pibber River Gunboat. I have the Pro Boat version which performs well. Would like a bit bigger hull as there is not much room for normal size batteries.
Which hull did you use?
Also interested in the Patrol Craft Fast ( Swift boat)of the Vietnam era
Interested in your build of the Pibber River Gunboat. I have the Pro Boat version which performs well. Would like a bit bigger hull as there is not much room for normal size batteries.
Which hull did you use?
Also interested in the Patrol Craft Fast ( Swift boat)of the Vietnam era
Inspired by jbkiwi's experiments on a smoker, and interested in developing one for my Crash Tender I have built an experimental rig based on using an e-cig for the smoke generator and an air pump. The air pump is driven by an electronic lash-up which pulses the pump at a rate depending on the throttle setting. The video shows two tests, first with the water off, then with it on.
{"text":"Inspired by jbkiwi's experiments on a smoker, and interested in developing one for my Crash Tender I have built an experimental rig based on using an e-cig for the smoke generator and an air pump. The air pump is driven by an electronic lash-up which pulses the pump at a rate depending on the throttle setting. The video shows two tests, first with the water off, then with it on.","subject":"Another Exhaust Smoker","media":[],"youtubeUrl":"https://www.youtube.com/watch?v=7kSfrcfrp_I"}
Inspired by jbkiwi's experiments on a smoker, and interested in developing one for my Crash Tender I have built an experimental rig based on using an e-cig for the smoke generator and an air pump. The air pump is driven by an electronic lash-up which pulses the pump at a rate depending on the throttle setting. The video shows two tests, first with the water off, then with it on.
Re: Can you give me more info on the electronic lash up you have made for the pulse circuit working from the motor speed control and the electric circuits for the e cig and pump.
The attached drawing shows a block diagram of the electronics. The 'smoke pulse generator' is a PIC10f220 microchip programmed to measure the pulse width of the throttle channel from the receiver. This width is used within the PIC to generate an output signal which is in effect the on/off waveform for the air pump driving the smoker to produce smoke pulses. The higher the throttle setting, the shorter the off time of this output signal and hence the more frequent the smoke pulses. This signal is connected to the PWM speed controller to control the pump speed. In the first iteration of the circuit, the PWM speed control circuit was built with two 555 timer chips and a bunch of discrete components. The second iteration, put together today, replaces the 555 timers and all the discrete components with a second PIC10f220 chip.
I'm still working on the settings and timings for these circuits adjusting the pulse widths, pump minimum and maximum speeds, etc to try and get a more realistic effect.
Graham93
Hi Elsrickle,
Re: Can you give me more info on the electronic lash up you have made for the pulse circuit working from the motor speed control and the electric circuits for the e cig and pump.
The attached drawing shows a block diagram of the electronics. The 'smoke pulse generator' is a PIC10f220 microchip programmed to measure the pulse width of the throttle channel from the receiver. This width is used within the PIC to generate an output signal which is in effect the on/off waveform for the air pump driving the smoker to produce smoke pulses. The higher the throttle setting, the shorter the off time of this output signal and hence the more frequent the smoke pulses. This signal is connected to the PWM speed controller to control the pump speed. In the first iteration of the circuit, the PWM speed control circuit was built with two 555 timer chips and a bunch of discrete components. The second iteration, put together today, replaces the 555 timers and all the discrete components with a second PIC10f220 chip.
I'm still working on the settings and timings for these circuits adjusting the pulse widths, pump minimum and maximum speeds, etc to try and get a more realistic effect.
Graham93[{"id":"157229353724","name":"157229353724","caption":"","url":"https:\/\/hobby.land\/media\/157229353724\/l","thumbUrl":"https:\/\/hobby.land\/media\/157229353724\/s","isImage":false,"ext":"file"},{"id":"157228708848","name":"157228708848","caption":"","url":"https:\/\/hobby.land\/media\/157228708848\/l","thumbUrl":"https:\/\/hobby.land\/media\/157228708848\/s","isImage":false,"ext":"file"},{"id":"157225542153","name":"157225542153","caption":"","url":"https:\/\/hobby.land\/media\/157225542153\/l","thumbUrl":"https:\/\/hobby.land\/media\/157225542153\/s","isImage":false,"ext":"file"}]
Thanks for the info. Afraid the programming of the chip a bit much for me, the timers circuits not a problem have used them before with success. However enjoying the progress of the smokers you doing a good job
Thanks for the info. Afraid the programming of the chip a bit much for me, the timers circuits not a problem have used them before with success. However enjoying the progress of the smokers you doing a good job
New video on Stevenage MBC YouTube channel. Fast electric ‘mini starship’ shows paces round the lake.
{"text":"New video on Stevenage MBC YouTube channel. Fast electric \u2018mini starship\u2019 shows paces round the lake.","subject":"Ten Shock \u2018mini starship\u2019 video","media":[{"id":"155509665471","name":"155509665471","caption":"","url":"https://hobby.land/media/155509665471/l","thumbUrl":"https://hobby.land/media/155509665471/s","isImage":false,"ext":"file"}],"youtubeUrl":"https://www.youtube.com/watch?v=2S9x02IO34w"}
Our 2nd outing to the lake last Saturday 30-3-19,
1st photo shows her doing her job supplying the oil rig
2nd photo Aziz at full speed, great bow wave moving down her sides.
{"text":"Our 2nd outing to the lake last Saturday 30-3-19,\n1st photo shows her doing her job supplying the oil rig\n2nd photo Aziz at full speed, great bow wave moving down her sides.","subject":"Aziz","media":[{"id":"155450551183","name":"155450551183","caption":"","url":"https://hobby.land/media/155450551183/l","thumbUrl":"https://hobby.land/media/155450551183/s","isImage":false,"ext":"file"},{"id":"155450552669","name":"155450552669","caption":"","url":"https://hobby.land/media/155450552669/l","thumbUrl":"https://hobby.land/media/155450552669/s","isImage":false,"ext":"file"}],"youtubeUrl":""}
Our 2nd outing to the lake last Saturday 30-3-19,
1st photo shows her doing her job supplying the oil rig
2nd photo Aziz at full speed, great bow wave moving down her sides.
