espsix Posted January 17, 2016 Report Share Posted January 17, 2016 Just finished this mod, only took 1/2 hour. Tech sheet courtesy of the SlotIt web page. Relay courtesy of my spares drawer for my ESP's. This should work on all high amp cartridges, but just check if it has the relay trigger pad as shown in tech sheet. Quote Link to comment Share on other sites More sharing options...
munter Posted January 17, 2016 Report Share Posted January 17, 2016 Had one on mine for about four years...clickety click. It works. Quote John Warren Slotcars are my preferred reality Link to comment Share on other sites More sharing options...
kalbfellp Posted January 17, 2016 Report Share Posted January 17, 2016 Blast relays are now a thing of the past, MOSFET do the same and usualy have less resistance than the contacts of a relay. I used relays for wing and Group cars and continued until my last controller build and then change to a Mosfet mounted in the plug top. Quote Phil https://www.hobartminiaturecarclub.com/ Email Link to comment Share on other sites More sharing options...
espsix Posted January 17, 2016 Author Report Share Posted January 17, 2016 Got a wiring diagram handy Phil? I've got a PM, and a Difalco I want to do. Quote Link to comment Share on other sites More sharing options...
kalbfellp Posted January 22, 2016 Report Share Posted January 22, 2016 Quote Phil https://www.hobartminiaturecarclub.com/ Email Link to comment Share on other sites More sharing options...
munter Posted January 22, 2016 Report Share Posted January 22, 2016 Geez I am a dumb bugger....just read the post and it refers to a Slotit controller....could have sworn it said Professor Motor controller. Fitted one to my PM controller years back....seems to not unwork. Quote John Warren Slotcars are my preferred reality Link to comment Share on other sites More sharing options...
Caddo Posted January 22, 2016 Report Share Posted January 22, 2016 What's the benefit of fitting these? Quote Link to comment Share on other sites More sharing options...
espsix Posted January 22, 2016 Author Report Share Posted January 22, 2016 Thanks Phil! Quote Link to comment Share on other sites More sharing options...
Garry J Posted January 23, 2016 Report Share Posted January 23, 2016 The P channel mosfet that Slot.it use is also a good choice, less than 0.018 ohms on resistance. Pretty low for a P channel. Part number is STP80PF55 Phil, can I ask you what is the purpose of the 2 x 47 ohm resistors on the mosfet gates? Quote Cheers, Garry J Old age and treachery will overcome youth and skill Link to comment Share on other sites More sharing options...
munter Posted January 23, 2016 Report Share Posted January 23, 2016 What's the benefit of fitting these? um? 0 Quote MultiQuote Quote John Warren Slotcars are my preferred reality Link to comment Share on other sites More sharing options...
munter Posted January 23, 2016 Report Share Posted January 23, 2016 As far as I know.... when you pull the trigger fully the circuitry is bypassed and full flow of electricity is given to the car. There must be some delay as the relay has to operate mechanically. I haven't noticed much advantage but only use that PM controller on my home track and have another controller (Carsteen) for slot events. Quote John Warren Slotcars are my preferred reality Link to comment Share on other sites More sharing options...
shadow_rusty Posted January 23, 2016 Report Share Posted January 23, 2016 (edited) On a transistor / resistor style controller, I can see the benefit of this, but given the good quality mosfets in the high current slot.it cartridge, I can't see any benefit for a blast relay / mosfet. On the low current cartridge, assuming it also has the blast out, there would be a definite gain though. That said, if it makes you feel better, then why the hell not... Edited January 23, 2016 by shadow_rusty Quote Stolen from SlotsNZ Team ABC Team Leader (Ambitious, But Crap) Home Track Threads - Shadow's Semi-Permanent Layout & Another Rug Racer & Proud of It & Gymkhana Test Track Car Collection Thread - My Car Collection Charts / Diagrams - MJK Tyre Selector / Slot.it 4wd Gearing / PoliCar Rollout / Rollout Chart Generator / SCX 4wd Rollout / Track Wiring with Brake on Track Call Link to comment Share on other sites More sharing options...
espsix Posted January 23, 2016 Author Report Share Posted January 23, 2016 On a transistor / resistor style controller, I can see the benefit of this, but given the good quality mosfets in the high current slot.it cartridge, I can't see any benefit for a blast relay / mosfet. On the low current cartridge, assuming it also has the blast out, there would be a definite gain though. That said, if it makes you feel better, then why the hell not... I've found that with the slot it controller I'm losing 1 to 2 tents around my track compared to any other controller, ( difalco, truspeed, and even a 25 ohm resistor controller) it might be just me, but after racing tonight if it's no different, there will be a cheap scp-2 slot it controller ( with blast relay ) for sale . Quote Link to comment Share on other sites More sharing options...
shadow_rusty Posted January 23, 2016 Report Share Posted January 23, 2016 Do you have the high current cartridge, or the standard one? If it's the standard one, then there is a large difference to the high current one. If it's the high current one, then, obviously, the slot.it just doesn't suit your driving style, which kinda sucks... Quote Stolen from SlotsNZ Team ABC Team Leader (Ambitious, But Crap) Home Track Threads - Shadow's Semi-Permanent Layout & Another Rug Racer & Proud of It & Gymkhana Test Track Car Collection Thread - My Car Collection Charts / Diagrams - MJK Tyre Selector / Slot.it 4wd Gearing / PoliCar Rollout / Rollout Chart Generator / SCX 4wd Rollout / Track Wiring with Brake on Track Call Link to comment Share on other sites More sharing options...
GAS41T Posted January 23, 2016 Report Share Posted January 23, 2016 Can't beat the 3rd eye and can't fault it...... I read that relays are inconsistent they can activate within 1-2volts from full throttle so I went with the mosfert setup I didn't even try it out It's smmmooottthhhhh bit pricey but hey try drag racing a Rotary on 24psi of boost on methanol & then you will relize how cheap slot cars really is as a hobby 🤑 Rossko Quote Link to comment Share on other sites More sharing options...
espsix Posted January 23, 2016 Author Report Share Posted January 23, 2016 It's the high amp cartridge. That's funny GAS41T, I race with a guy who's just gone from a third eye to a difalco and says he's going faster than ever. I think any of the high end race controllers just as good as each other, but the slotit controller is not a high end controller, more a home set controller. Quote Link to comment Share on other sites More sharing options...
munter Posted January 23, 2016 Report Share Posted January 23, 2016 but the slotit controller is not a high end controller, more a home set controller. agree Quote John Warren Slotcars are my preferred reality Link to comment Share on other sites More sharing options...
kalbfellp Posted January 23, 2016 Report Share Posted January 23, 2016 Gary the gate resistors limit current from the driver MOSFET and tend to stop any oscillation. Probably don't need to be that big 10 ohms will probably do the job and allow faster switching. Quote Phil https://www.hobartminiaturecarclub.com/ Email Link to comment Share on other sites More sharing options...
Caddo Posted January 24, 2016 Report Share Posted January 24, 2016 (edited) Interesting topic and feedback. I wonder if adding this would bring the Slot It controller up to a Difalco's speed? Edited January 24, 2016 by Caddo Quote Link to comment Share on other sites More sharing options...
kalbfellp Posted January 24, 2016 Report Share Posted January 24, 2016 IMO part of the speed is simply the fact that everyone has different driving styles and certain controllers just suit different people. Quote Phil https://www.hobartminiaturecarclub.com/ Email Link to comment Share on other sites More sharing options...
Garry J Posted January 24, 2016 Report Share Posted January 24, 2016 Gary the gate resistors limit current from the driver MOSFET and tend to stop any oscillation. Probably don't need to be that big 10 ohms will probably do the job and allow faster switching. Thanks Phil Quote Cheers, Garry J Old age and treachery will overcome youth and skill Link to comment Share on other sites More sharing options...
slotcarnut Posted January 26, 2016 Report Share Posted January 26, 2016 Controllers really are a personal preference and it takes a little while to figure out what works. I used a difalco for several years becuase I liked the feel of the controller,I dont like electronic controllers as you cant feel the wiper arm. I have recently switched to a carsteen which gives better brakes (mofset) and has better ability to adjust mid range response with its dip switches. Still uses a wiper arm so has the old school feel. With the low power motors we run there is little to no benefit in blast relays, chokes, and all the other fancy stuff. Being able to brake as well as possible then modulate low to mid range is where the speed is at. Quote Link to comment Share on other sites More sharing options...
munter Posted January 27, 2016 Report Share Posted January 27, 2016 (edited) I used a difalco for several years I have recently switched to a carsteen which gives better brakes Sounds good Slotcarnut. Edited January 27, 2016 by munter Quote John Warren Slotcars are my preferred reality Link to comment Share on other sites More sharing options...
dangermouse Posted January 27, 2016 Report Share Posted January 27, 2016 myself I just need to learn how to drive I need little signs - brake now - accelerate now etc Quote Link to comment Share on other sites More sharing options...
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