3rd harmonic Posted December 8, 2024 Posted December 8, 2024 (edited) Most of these permanent magnet alternators which are found on motorcycles and aero engine are a shunt type regulator. Essentially the control element 'shunts' current to ground to hold the voltage down as the output increases with RPM. A capacitor is a good idea on the output as this will tend to bypass any switching noise or spikes to ground, rather than relying on the battery which may not be effective. However large electrolytic's offen have a fairly low self-resonant frequency that may be only a 400-500Hz, above which the capacitor is behaves like an inductor. To ensure the capacitor remains capacitive a 1uf polypropylene film cap can be used to bypass the electrolytics.... A large filter capacitor means the alternator can effectively run the electrical loads without a battery connected. Edited December 8, 2024 by 3rd harmonic Extra info 1
Moneybox Posted December 23, 2024 Posted December 23, 2024 It was nice of the Czechoslovakians to hold off and deliver my engine mounts for Christmas 😁 2 4
skippydiesel Posted December 23, 2024 Posted December 23, 2024 For people looking for 17mm coolant hose alternative to RoTax; I have no experince with Mackay however they have a good reputation. Catalogue Section 3 Pages 42-44 https://www.westernfilters.net.au/content/pdfs/mackay_HosePics_2014.pdf?srsltid=AfmBOopBWYE-XWZDeYC4lUVzsbvP9OrGpbFbRoOdLBcNEMsFavPgQKfc Most are pre formed, so you will have to match/cut where necessary (PN CH4195 seems to be the only straight). FYI Some 16mm ID may fit . Gates PN 19489, 19488, 19497, 19498, 19545 may also fit. All pre-formed with 16mm (0.66") ID, Meet SAE 20R3 Type EC Class D1&D2, -40C to +135C NOTE: Make sure that any hose you intend to purchase meets/exceeds Rotax specifications 1 1
turboplanner Posted December 23, 2024 Posted December 23, 2024 On 10/09/2024 at 12:03 PM, spacesailor said: " regional parts " , I needed a Holden part , it comes from Brisbane somewhere. As I'm heading north from Sydney, no problem. Get to Brisbane, only to be told , it comes from Perth . I eventually broke down, solely due to regional parts . Luckily for me , the Indian mechanic knew the tricks & got that common part . From , China . spacesailor You were a moving target for the GM system. You needed a part now, but the dealer parts guy was trying to help you offering to get one from another dealer or State warehouse. If you had asked the dealer to get the Brisbane dealer to put the part on Hold for you it would have been held for you to pick up on arrival.
IBob Posted March 7 Posted March 7 Rubber replacement here. I have the ICP SS oil and coolant lines, which require short hose terminations. Am currently trying to source Gates 8GTH here in NZ, it looks like a good fit for the oil. As suggested at the start of this thread, so thanks for that. Does anyone have a recommendation for the coolant, which requires similar short straight bits of 25mm hose?
skippydiesel Posted March 8 Posted March 8 "ICP SS oil and coolant lines" Is this the corrugated stainless hose? "Does anyone have a recommendation for the coolant, which requires similar short straight bits of 25mm hose?" Any Gates 25mm ID radiator hose can be used - just price the cheapest & cut to length. If you want "rubber" hose the whole way, Gates make 25mm ID radiator hose, with 90 degree bend, in two diffrent lengths. All of the required info. can be found in this thread.😈
IBob Posted March 8 Posted March 8 Thanks Skippy. Yep, I was being a bit lazy..........but am also finding only a small subset of Gates products routinely stocked in NZ. For instance, Repco here have never heard of 8GTH, I have emailed Gates asking where I may get it. 1
skippydiesel Posted March 8 Posted March 8 2 hours ago, IBob said: Thanks Skippy. Yep, I was being a bit lazy..........but am also finding only a small subset of Gates products routinely stocked in NZ. For instance, Repco here have never heard of 8GTH, I have emailed Gates asking where I may get it. Repco Australia only stock those Gates products deemed to have automotive applications - they do not stock 8GHT hydraulic oil hose. 8GHT hydraulic oil hose, can be had from a hydraulic service company called Hydrolink (there may be others)😈 1 1
Marty_d Posted March 8 Posted March 8 4 hours ago, IBob said: Thanks Skippy. Yep, I was being a bit lazy..........but am also finding only a small subset of Gates products routinely stocked in NZ. For instance, Repco here have never heard of 8GTH, I have emailed Gates asking where I may get it. Hi Bob, I got my 8GTH from Hardy Spicer. They may have a NZ presence under "Spicer" - not sure if it's the same company or not. 1
Moneybox Posted March 8 Posted March 8 I got mine from Mako Services in Busselton, a forklift maintenance business. 1 1
Thruster88 Posted March 8 Posted March 8 4 hours ago, IBob said: Thanks Skippy. Yep, I was being a bit lazy..........but am also finding only a small subset of Gates products routinely stocked in NZ. For instance, Repco here have never heard of 8GTH, I have emailed Gates asking where I may get it. Since you are a kiwi Enzed hydraulics should have it 1 1
BrendAn Posted March 8 Posted March 8 On 23/12/2024 at 4:22 PM, skippydiesel said: For people looking for 17mm coolant hose alternative to RoTax; I have no experince with Mackay however they have a good reputation. Catalogue Section 3 Pages 42-44 https://www.westernfilters.net.au/content/pdfs/mackay_HosePics_2014.pdf?srsltid=AfmBOopBWYE-XWZDeYC4lUVzsbvP9OrGpbFbRoOdLBcNEMsFavPgQKfc Most are pre formed, so you will have to match/cut where necessary (PN CH4195 seems to be the only straight). FYI Some 16mm ID may fit . Gates PN 19489, 19488, 19497, 19498, 19545 may also fit. All pre-formed with 16mm (0.66") ID, Meet SAE 20R3 Type EC Class D1&D2, -40C to +135C NOTE: Make sure that any hose you intend to purchase meets/exceeds Rotax specifications do not push 5/8 hose over a 17mm barb. the hose will be weakened.
BrendAn Posted March 8 Posted March 8 if anyone wants some mackay 17.5mm hose just pay the postage and i can send u some. i have about 40 mt left. i only needed 2 meters and bought a 50 meter roll. isuzu wanted $800 for a 600mm long hose, thats how i ended up buying the large roll. 1
BrendAn Posted March 8 Posted March 8 1 minute ago, facthunter said: 16 MM is very close, to 5/8" Nev exactly, most heater hose is 5/8, slightly smaller than 16mm for memory. probably can push it onto a 17mm barb but it stretchs the hose wall at the tip of the fitting. 2
Area-51 Posted March 8 Posted March 8 28 minutes ago, facthunter said: Yes . it's just over 1 mm out. 1MM = .3937"Inches. Nev Thats not correct... 1mm = 0.039" 🤓 3
Blueadventures Posted March 8 Posted March 8 (edited) 9 hours ago, IBob said: Thanks Skippy. Yep, I was being a bit lazy..........but am also finding only a small subset of Gates products routinely stocked in NZ. For instance, Repco here have never heard of 8GTH, I have emailed Gates asking where I may get it. I have seen this hose used for Rotax 912 oil lines. Owners said no issues and replaced with same again. An experienced Rotax and aircraft service person used it. Edited March 8 by Blueadventures 2 1
Freizeitpilot Posted July 6 Posted July 6 Should I buy a single Bose replacement headset microphone foam windscreen from America for $22.95 + delivery or 10 non-genuine ones off Temu for $2.06 ?? 1 1
danny_galaga Posted July 6 Author Posted July 6 On 06/07/2025 at 12:50 PM, Freizeitpilot said: Should I buy a single Bose replacement headset microphone foam windscreen from America for $22.95 + delivery or 10 non-genuine ones off Temu for $2.06 ?? Tough call 🤔 1
Freizeitpilot Posted July 6 Posted July 6 12 minutes ago, Admin said: Or from Clear Prop Good point ! They are listed for $0.00 ! 1 1
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now