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Healey3000

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Healey3000 last won the day on June 7 2018

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  1. Hi, This is very helpful. It looks like these fans integrate the BLDC controller, thereby simplifying the drive requirements. If you are thinking of getting one of these, I'd say you may as well get their sensor as well. That way, you have a turnkey solution that just bolts in. One could make a separate unit that sends out the required PWM pulse train. Not too difficult but we'd need to know the frequency and duty cycle mapping.
  2. Hi, I was referring to the brushed Spal; sorry, I should have been more specific. I'm now wondering what exactly these "brushless fans" are. I think of brushless in the context of BLDC motors, which have three wires, one for each phase of the windings. Those require a specialized controller, not a run of the mill PWM driver. Do you have a datasheet on one of these with details of the wiring?
  3. Hi, The autocool controller shows 7 kHz as the frequency. That won't be good for a Spal fan (I also find the 125 amp rating to be oddly high). The last link, Steele, does not list the PWM frequency but they may tell you if you contact them. A complete kit would work well but it comes with a pretty high price tag. Incidentally, if you use the WN high capacity radiator, you may be just fine with a 10" fan. I have the 12" fan and find that it has very little work to do. You may be in warmer climes than I am but if I were to do it again, I'd go with the 10".
  4. Hi Dennis, Sorry for the delay in responding. I have not produced more of these as there has been no interest; you're the first one to ask ๐Ÿ™‚ I think I have a blank PCB or two somewhere which I can build up. I may not have the components, which I hope are available, given the crazy chip shortage. I think it should be okay. Will you be using the same temp sensor I used? If so, the code would need no changes. Do you have one of the Ford modules? A brushless fan would be a nice upgrade for this application. Depending on whether it has a built-in controller or not, my circuit may or not be usable with it. If you can tell me which BLDC fan you are considering, I can take a look.
  5. Butyl sealant works well - that's what the installer of my windshield used. As long as you don't use urethane!!
  6. I know, I know, but they are called a 2 x 2. Very confusing to the uninitiated ๐Ÿ˜ž
  7. Strictly speaking, a 50.8 x 50.8 ๐Ÿ˜‰
  8. Hi, I believe the search term is a "coupling nut". It's like a threaded spacer.
  9. High-side switching is the preferred mode for the reasons Toby mentioned. While it is also true that low side switching with FET's is less expensive, the benefits of high-side are worth it. In a crash, you lower the risk of a hot wire touching the chassis. If you google "high-side switching in automotive electronics", you'll find some really nice explanations. Manufacturers like Infineon have excellent app notes on the subject.
  10. Hi, I'm looking to have a couple of templates cut for a 2002 project and I was wondering if any FAQ members offered such a service. I know Polulu is a pretty good outfit to have this done but I'd prefer to keep it within the family, if possible. Thanks!
  11. Well, it's the 2002, not the 2020. Otherwise, there would have been hindsight ๐Ÿ™‚ I realize you have (had) a 1600 but I couldn't resist.
  12. Slavs, I would try disconnecting the voltage regulator altogether. Since the 90-amp alternator you have there has an internal regulator, the output goes directly to the battery. It is possible that the regulator is seeing the excessive voltage and simply opening up internally. Since there is nothing for it to control, nothing happens. However, there may be some unintended consequences with it being plugged in. For example, when I swapped my alternator for one from an e30 318i (90 amp as well), I unplugged the regulator and left the connector dangling. I also connected the excitation voltage wire at the alternator. That's it, it all worked.
  13. Sounds like the tach is grounding the ignition coil. Can you check for a short with an ohmmeter?
  14. I had to look that up! I prefer The Milagro Beanfield War ๐Ÿ˜
  15. Diode = check valve Inductor = water wheel connected to a flywheel That inductor analogy takes some mind-bending ๐Ÿ™‚
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