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13-08-2020, 04:37 PM | #1 | |
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Join Date: Aug 2011
Location: Southampton
Bike: M1100evo
Posts: 2,465
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Quote:
As you say, it's fitted as standard to, for example, the 821 and 1200 Monsters and, knowing Ducati as we do, you wouldn't expect the bean counters to authorise a top spec R/R when a cheaper option is available. I was under the impression it was an unremarkable SCR shunt type (I think the S in SH signifies SCR circuitry and the F in FH indicates (MOS)FET). Having corresponded with Shindengen in the past, I pinged them an email for clarification and, to their credit, they replied straightaway: Last edited by Luddite; 13-08-2020 at 06:56 PM.. Reason: Series type model nos. added |
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14-08-2020, 12:06 AM | #2 | ||||
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Join Date: Apr 2016
Location: Farnborough
Bike: M900sie
Posts: 171
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Well, frolicking puppies and rainbows... I knew the SH775 is a 35A SCR series R/R, and the SH847 a 50A version of the same. The SH821 is a later (& still current) type; to my mind, it beggars belief that Ducati are still fitting SCR shunts to new bikes... Ho-hum. Found a cheap source for SH775's (heh - Polaris have jacked the price of their part to $200 since the Strom guys discovered them at 60). Least the 775 will be a straight swap ... Quote:
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14-08-2020, 10:02 AM | #3 |
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Join Date: Aug 2011
Location: Southampton
Bike: M1100evo
Posts: 2,465
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Negotiating your way through all the Shindengen R/Rs is a real minefield, Spuggy, especially as Shindengen themselves don't appear to publish a list of all their models and types, (at least I've never managed to find one).
It also doesn't help that, despite producing products with fundamentally different circuitry, Shindengen uses the same labelling system to identify them all - SH775, SH821, SH847 - you can't tell from the model no. which is shunt and which, if any, is series. It would be much simpler if the series type had its own dedicated suffix (they do identify the MOSFET type with an 'F' after all). But that would make life too easy, wouldn't it?! |
14-08-2020, 02:32 PM | #4 | ||
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Join Date: Apr 2016
Location: Farnborough
Bike: M900sie
Posts: 171
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And although that list is quite useful, the very first entry (for an SH775) is incorrect, as that unit isn't a MOSFET Series R/R.... Quote:
As you appear to have a corporate A/C with those guys (required to open an account/ask web-form questions - understandable given they're 100% OEM/zero retail), would you be in a position to ask for specific datasheets? Or technical questions? Reason for asking is that the SH775 is an 35A SCR-based series R/R. It used to be dirt-cheap ($60), but now is much more expensive (like $192 as a Polaris OEM part), and is known to have at least one problem;intended for an ATV, it doesn't regulate over some high RPM - variously reported to be 9,000 RPM (strongly disputed by guys who've measured theirs at this), or 10,000 RPM. In the absence of any real evidence, looks like you could choose what you want to believe: https://www.vmaxforum.net/threads/re...-esr279.47773/ https://www.triumphrat.net/threads/a....748962/page-2 And even Jake is only repeating what some customers have told him, apparently https://v4musclebike.com/forums/show...ndengen&page=3 (BTW, page two of that thread has a video of a chap statically rev'ing his bike to 10,000 RPM, and the voltage output from the SH775 remains constant - another guy in the same thread says he had the SH775 fitted and working perfectly for 2 years before he even heard there was supposed to be an issue over 10,000 RPM)... But it'd be really, really nice to have a definitive statement from ShinDengen... Apparently, some of those Triumph 4's are red-lined at 14,000, 16,000 RPM (wow, ...). I can see how any limit would matter to them. Jake used to supply the SH775. He now doesn't, and recommends the SH847 instead - because gets them for almost the same money. He has expressed concerns regarding the SH775 and the RPM limit; he isn't convinced that the shutdown it performs when this limit is exceeded (which he states as 9-10K, so quotes 9K to be conservative) is non-harmful to the unit itself. From his POV, the SH775 is potentially problematic for some and very close to the same price as the SH847 - which has more capacity and works with everything... I can see exactly where he's coming from. but
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14-08-2020, 04:58 PM | #5 | |
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Join Date: Mar 2010
Location: Beachtown
Bike: M900
Posts: 2,188
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Here’s their response when I asked this: “Can you please tell me the difference between the FH012AA and the FH020AA which replaced it?“ Fm.Shindengen Thank you very much for inquiry through our company website. We are very pleased to answer to your demand. Our car electric components are customized product for the Motorcycle Manufacturer. We deeply apologize but due to a trade agreement with the Motorcycle Manufacturer, we are prohibited to sales and disclose any information of our products to customer directly. We apologize for this inconvenience but please contact with the official sales store of the Motorcycle Manufacturer.
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14-08-2020, 10:09 PM | #6 | |
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Join Date: Apr 2016
Location: Farnborough
Bike: M900sie
Posts: 171
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15-05-2023, 06:32 PM | #7 |
Member
Join Date: Jan 2015
Bike: S4r
Posts: 104
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Question for you gents....a mate of mine had a MOTOBATT AGM on his bike...told me his bike wouldn't start...took a Lithium with me ( higher CCA ) just to prove battery is probably flat.....he said when trying to start it was just chattering ie rattling the starter sprag..thus insufficient current to spin it over.....the MOTOBATT showing over 12volts but not enough current to spin over the bike....once an AGM battery is flat....ie this one hadn't been charged for months and it was an old battery.....are they beyond being recovered back to a fully charged state.....I've had both good and bad experiences with MOTOBATT over the years....Incidentally , the Lithium fired the bike up straight away...Look forward to your replies.Thanks.
adie851 |
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