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#41 |
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Not directly related to how you do it, but just to add my twopennethworth: I think off, warm and warmer is plenty of control. Coming from an "infinite" range of settings on my previous bike, I thought I'd miss it, but it's fine.
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#42 | |
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![]() Sorry to be a **** but someone's going to have to explain relays to me (or a link? ) I've never wired one in or ever seen one so lost on the 'activiating coil' bit. Or would it be self explanatory when I buy a relay?
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#43 | |
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lol, I stand by my words, a failure of the heated grips should NEVER leave you stranded.
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Ok so a relay essentially is just a switch except that instead of someone flicking the switch an electromagnetic coil does the work, so you have exactly the same wiring as a switch (including all the same options, SPST, DPDT etc) plus two extra connectors for the activating coil. The normal way to do things is to have a low voltage manually switched which triggers a far higher voltage switched by the relay. Have a look at http://en.wikipedia.org/wiki/Relay but if I may steal an image off there; ![]() The curly bit on the side is the activating coil, you'd typically use a SPST for this kind of use and connect 'A' to a fused wire from the battery, 'B' to the heated grips and then the activating coil as previously mentioned linked to earth and through a switch to a feed that is on when the ign is on. Druid
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'00 SV700S - '94 RVF400R - '97 RVF400R - '88 VFR750F Last edited by fastdruid; 22-09-09 at 11:41 AM. |
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#44 | |
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If I was doing it the first time I'd keep things simple with just a big switch instead. If I was doing it a second time i'd probably do something flashy like this. You could get REALLY clever and use a temperature sensor instead of a manual switch ![]()
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#45 | |
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![]() Druid
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'00 SV700S - '94 RVF400R - '97 RVF400R - '88 VFR750F |
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#46 | ||
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Druid
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'00 SV700S - '94 RVF400R - '97 RVF400R - '88 VFR750F |
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#47 |
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There could be a market for those you know. I suffer similarly. Although my heated grips don't get hot unless my hand is wrapped round them, so levers could suck a lot of power.
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#48 |
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On another thread I posted a link to the wikipedia page for PVM, at the bottom was a link to this page
http://www.eleinmec.com/article.asp?28 which describes a simple circuit using two 555's and a TIP31C, total cost is given as £7.35 (but I don't know how old it is) and should be able to cope with 40w or about 3A Now 3A is possibly a bit low as Oxford say the grips pull "under 4A" but replace the TIP31C with something higher rated such as if I'm reading the table correctly a BD243C and you could have something, bit of strip board, some potting compound and some connectors and you have a controller. I think I may be making a maplins order... ![]() Druid
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'00 SV700S - '94 RVF400R - '97 RVF400R - '88 VFR750F Last edited by fastdruid; 22-09-09 at 02:46 PM. |
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#49 |
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I think I'm going to cave and buy the oxford thing
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#50 |
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Just as a headsup, if you're looking for an on-off switch, the wraparound version has exactly that. Might be worth looking for a busted version of those as an alternative.
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