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Post by JonW on Nov 16, 2022 1:06:14 GMT 1
I know you can 'tune' the sound of the horn with the screw/nut on the body, Im wondering if anyone has tuned one into another sound that worked?
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Post by donkeychomp on Nov 16, 2022 1:15:57 GMT 1
Hmm. Are you trying for the Dukes of Hazzard horn note?
Alex
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Post by JonW on Nov 16, 2022 1:27:11 GMT 1
Hmm. Are you trying for the Dukes of Hazzard horn note? Alex No... but keeping the TV theme, I have a 'cunning plan'...  |
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Post by midlifecrisisrd on Nov 16, 2022 9:44:09 GMT 1
This may be total crap but the only thing i noticed before (may just have been a dodgy pair) but when i stripped a pair for paint/plate one had and extra washer under the front dome
Not sure if that's what makes the difference
Steve
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Post by midlifecrisisrd on Nov 16, 2022 9:52:38 GMT 1
Cue Jon in the garage now with a spanner unscrewing horns 🤣
Steve
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Dave B
Drag-strip hero
Posts: 240 
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Post by Dave B on Nov 16, 2022 10:29:20 GMT 1
Purely theoretically, I suspect that the difference between a low and a high pitch horn comes from the mass of the diaphragm and the length of the "horn" part, which is usually a spiral that airtone horns have. Standard Yam horns don't have one of course, but adding a little weight to the diaphagm should make a difference. The adjusting screw only adjusts the distance that the diaphragm moves, and there is an optimum setting that suits the natural resonant frequency of the diaphragm. Move too far from the optimum and you just get a strangled squawk!
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Post by JonW on Nov 16, 2022 12:42:53 GMT 1
Cue Jon in the garage now with a spanner unscrewing horns 🤣 Steve Ive messed with horns before and not ever really got to far other than to make some cheap ones work by fixing too tight nuts etc. Always up for a bit of learning tho... |
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Post by JonW on Nov 16, 2022 12:49:16 GMT 1
Purely theoretically, I suspect that the difference between a low and a high pitch horn comes from the mass of the diaphragm and the length of the "horn" part, which is usually a spiral that airtone horns have. Standard Yam horns don't have one of course, but adding a little weight to the diaphagm should make a difference. The adjusting screw only adjusts the distance that the diaphragm moves, and there is an optimum setting that suits the natural resonant frequency of the diaphragm. Move too far from the optimum and you just get a strangled squawk! Good info there Dave. Ive owned the odd squawker in my time, wish i'd known that there was a fix. Since we cant split these horns without major work (rivets etc) then I assume we cant adjust the weight of the diaphragm so one cant change the tone externally. |
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Post by JonW on Nov 16, 2022 12:50:43 GMT 1
I guess the questions are now; whats wrong with just a hi tone...? or even two...? too much high pitch? would anyone care? should I care?
The 250LC has a single horn... its 4l0-83371-20 which is NLA and supersedes to 4l0-83371-30, which is the left hand 350LC horn. That horn is a low tone, but was the -20 version a mix of both hi and low? The later bikes only have one as well, what tones are they i wonder... hmm...
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Post by donkeychomp on Nov 16, 2022 22:15:10 GMT 1
Has anyone beeped both to see if there's any sound difference? I bet there isn't. I do admit the twin horn set up looks better than a single but I've often wondered why Yamaha bothered to do that.
Alex
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Post by shaunthe2nd on Nov 16, 2022 22:47:35 GMT 1
Yes, and they do sound different.
I prefer the hi tone myself.
I've never understood why 2 horns on the 350, can only be aesthetics.
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Post by JonW on Nov 16, 2022 23:18:04 GMT 1
I'm sure it must have been a looks thing. It does look cool tho, lots of 250s not enjoy the 350 look in this department.  FWIW the mathematician in me says its @10db louder to have 2 horns... IIRC from my hifi days. I need to pull each side out of one of my LCs and hear the difference I think. |
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Post by donkeychomp on Nov 16, 2022 23:27:43 GMT 1
Surprised no one's made any 'horny' remarks. Think this forum is sliding a little...  Alex |
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Post by JonW on Nov 16, 2022 23:57:24 GMT 1
Surprised no one's made any 'horny' remarks. Think this forum is sliding a little... Alex Yes I expected someone to suggest a low tone could be make into a high tone with a blue pill... but luckily i was looking for the opposite lol |
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Post by midlifecrisisrd on Nov 17, 2022 9:49:56 GMT 1
Im telling you, its the washer under the dome 😬
Must change the resonance of it 😜
Only other thing that would affect it is a higher frequency
Lower Hertz, lower tone, higher Hertz, higher tone
Steve
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Post by steve h on Nov 17, 2022 15:23:17 GMT 1
Quite frankly I couldn't give 2 hoots.
Steve, Tooting. HI1 LO1.
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Post by JonW on Nov 17, 2022 23:27:05 GMT 1
Quite frankly I couldn't give 2 hoots. Steve, Tooting. HI1 LO1. Gold! |
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Post by midlifecrisisrd on Nov 18, 2022 9:41:22 GMT 1
Quite frankly I couldn't give 2 hoots. Steve, Tooting. HI1 LO1. Your jokes are honking and I don't like the tone of them 🧐 Steve |
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Post by steve h on Nov 18, 2022 12:48:12 GMT 1
Quite frankly I couldn't give 2 hoots. Steve, Tooting. HI1 LO1. Your jokes are honking and I don't like the tone of them 🧐 Steve I'm sorry for pressing your button. |
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Post by bare on Nov 18, 2022 17:59:51 GMT 1
Honda CIVIC horns. Identical in appearance to the geriatric Yama fitted ones.
Can be had for 5$, or even Free at an Auto wreckers.
Massively louder than Yama ones.
Big noise is important When (not If) you need it.
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Post by marrcel on Nov 22, 2022 23:51:33 GMT 1
Yes, and they do sound different. I prefer the hi tone myself. I've never understood why 2 horns on the 350, can only be aesthetics. Two different tones like 270Hz and 300Hz give a wide spectrum of tones. If you have just one tone it is difficult to locate it. Its like the refrigerator in the kitchen you can hear it just on a few places. A wider spectrum is easier to locate with our two ears. So in my opinion science rules over looks🤫 |
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Post by donkeychomp on Nov 23, 2022 0:10:52 GMT 1
There is a question not answered here. Why would you want to Jon? Just curious my friend.
Alex
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Post by JonW on Nov 23, 2022 0:27:15 GMT 1
There is a question not answered here. Why would you want to Jon? Just curious my friend. Alex Haha, no problem answering that mate. What is was is that I noticed that I could buy 2 hi tone horns cheaper than a repro set of Hi/Lo and in the spirit of saving a few quid I wondered if it was possible. I feel that the cost of LC stuff is just crazy now and any way you can save a buck when building would be worth exploring. This would save about 1/3 the cost of horns, imagine if you could do that across the whole resto... hmm... I just dont have the kind of cash to pay up for every part, so need to get creative. I shop the world for parts and buy where is cheapest, you can save a lot doing that but also stuff like this helps. I will say that part of the issue is the number of projects I have, plus i dont sell em when theyre done... but that also helps sometimes as well as Im always in need of something so buying extras can mean a discount or free post etc. Anyway, I figured if there was a way to convert a horn with a twist of a bolt or nut then Id be game, but seems not. Id rather run the 350LC style horn setup as it looks 'right' to me, and I have the bracket etc... but I may be forced to have just the one and do it as a 250. we'll see. |
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Post by donkeychomp on Nov 23, 2022 1:09:19 GMT 1
(Doffs hat). Well said sir. And I concur. Our bikes are getting harder and harder to restore so any saving is well worth it!
Alex
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Post by reedpete on Nov 23, 2022 20:03:48 GMT 1
Yes, and they do sound different. I prefer the hi tone myself. I've never understood why 2 horns on the 350, can only be aesthetics. I read somewhere it was due to Japanese police being approached to use the 350 and the two tones could be controlled alternately with an alternative control. |
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Post by LC_BOTT on Nov 23, 2022 22:02:21 GMT 1
Just search for Nikko horns, all manufacturers had them fitted, then it's just a case of finding a match....GS500 'looks' identical, sure there'd be loads more for around £5.
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