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pancho
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« on: May 02, 2019, 03:01:36 PM » |
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https://www.ebay.com/itm/Gas-Fuel-Petcock-Tap-Valve-Switch-For-Honda-GL1500CD-GL1500C-Valkyrie-Motor-Bike/201915422104?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649Well, I received the $15 fuel petcock from China today. The packaging wasn't much, but adequate to get it to me in one piece.  The castings look good, and the switch feels positive and secure, the screen mesh seems to be the same grade as the original.  So I open the back and see they have simplified the design. They have done away with the two diaphragm design and used a single diaphragm for the fuel cutoff and vacuum side, so there is no intermediary space and no weep hole. While this will work just fine, if the diaphragm ever rips the fuel goes straight to the number six cylinder via the vacuum hose, no leaking weep hole to alert you. I believe parts from a Valkyrie cover set could be used in it. In the vacuum cap they have eliminated the most troublesome part of the Valkyrie petcock, the ball valve which tends to stick and the bypass port to plug up, hold a vacuum and cause fuel to flow when the motor is off. While they have eliminated this problem, it also means that there is no delay from the engine vacuum to the fuel shutoff diaphragm and every change in vacuum is immediately expressed on the diaphragm, excessive back and forth, no delay, I don't like it.  The switch side opens up which I like and it is rebuild-able although it may be a bit hard to get on O-ring seated for the cover. I don't think you would ever have any leak through in the off position as it is a positive position click.  I think this is a serviceable petcock for temporary or spare use, but the lack of sophistication of the vacuum side gives me a problem for long term usage. FIfteen bucks,,,, well worth it, but not as cool as the original.
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« Last Edit: May 03, 2019, 04:02:50 PM by pancho »
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The most expensive things you will purchase, are those things you would not have needed if you had listened and obeyed.
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gordonv
Member
Posts: 5760
VRCC # 31419
Richmond BC
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« Reply #1 on: May 02, 2019, 07:22:31 PM » |
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Thank you for the review. Do you think it might be rebuildable with the parts from the OEM one, make it a Frank-N-stein of the 2.
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1999 Black with custom paint IS   |
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pancho
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« Reply #2 on: May 03, 2019, 05:21:07 AM » |
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The next time I have the tank off I will see what can be done, but the way the main body is designed and cast, it seems unlikely you could use all the parts to turn it into a dual diaphragm. Since the cap with the valve is the main problem with the original, but in my opinion, an important part of the design for longevity, putting that on the Chinese valve would give you a new selector switch end if that was a problem with your original. You would still have a single diaphragm petcock. Best solution is to keep the original in good condition and keep the ball and leak down port in the cap clear and clean.  |
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The most expensive things you will purchase, are those things you would not have needed if you had listened and obeyed.
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indybobm
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« Reply #3 on: May 03, 2019, 10:01:44 AM » |
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Any pictures of the other side of the petcock with the cover off? I guess the filter is ethanol proof?
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So many roads, so little time
VRCC # 5258
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pancho
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« Reply #4 on: May 03, 2019, 10:48:13 AM » |
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There's a picture of the selector side, and a picture of the vacuum side.. that's the only sides there is indybobm.  |
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The most expensive things you will purchase, are those things you would not have needed if you had listened and obeyed.
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indybobm
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« Reply #5 on: May 03, 2019, 02:22:03 PM » |
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I meant the selector side with that cover off showing the selector ball and o-rings.
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So many roads, so little time
VRCC # 5258
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Daniel Meyer
Member
Posts: 5492
Author. Adventurer. Electrician.
The State of confusion.
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« Reply #6 on: May 03, 2019, 02:32:50 PM » |
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The lack of the dampener in the vacuum port will shred that diaphragm in VERY short order. The Valk was a wicked intake pulse (which is the point of the dampener) and will rattle that diaphragm ruthlessly.
I also ordered one of those to see what it was (hey, for 15 bucks, worth a look, right) and mine had a substantial amount of casting sand inside the petcock...
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CUAgain, Daniel Meyer  |
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pancho
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« Reply #7 on: May 03, 2019, 03:04:52 PM » |
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I meant the selector side with that cover off showing the selector ball and o-rings.
There is a picture like that a few posts up, right under where I said, The switch side opens up which I like and it is rebuild-able although it may be a bit hard to get on O-ring seated for the cover.... is it not showing up? No sand in the one I received Daniel, but an over abundance of light silicone lube. |
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The most expensive things you will purchase, are those things you would not have needed if you had listened and obeyed.
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gordonv
Member
Posts: 5760
VRCC # 31419
Richmond BC
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« Reply #8 on: May 03, 2019, 03:51:18 PM » |
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I meant the selector side with that cover off showing the selector ball and o-rings.
There is a picture like that a few posts up, right under where I said, I see a broken link on your 4th pic, nothing. |
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1999 Black with custom paint IS |
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pancho
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« Reply #9 on: May 03, 2019, 04:05:07 PM » |
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I don't understand that, but have run across it before. I was able to see it but not others..? Is it visible now?
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The most expensive things you will purchase, are those things you would not have needed if you had listened and obeyed.
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gordonv
Member
Posts: 5760
VRCC # 31419
Richmond BC
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« Reply #10 on: May 03, 2019, 06:45:31 PM » |
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Nope. All I see is a small broken image. Try to click, nothing.
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1999 Black with custom paint IS |
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pancho
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« Reply #11 on: May 04, 2019, 06:25:14 AM » |
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The most expensive things you will purchase, are those things you would not have needed if you had listened and obeyed.
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indybobm
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« Reply #12 on: May 04, 2019, 10:35:48 AM » |
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Image size?
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So many roads, so little time
VRCC # 5258
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Jess from VA
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« Reply #13 on: May 04, 2019, 10:35:59 AM » |
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My petcock used to be a strong and faithful instrument.
Now a $15 replacement seems reasonable.
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« Reply #14 on: May 04, 2019, 01:38:08 PM » |
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My petcock used to be a strong and faithful instrument.
Now a $15 replacement seems reasonable.
Snurf, snurf. |
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pancho
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« Reply #15 on: May 04, 2019, 01:48:39 PM » |
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Image size?
My first thought is if that was the problem and they couldn't be displayed by the forum, I couldn't see them either?? My petcock used to be a strong and faithful instrument.
Now a $15 replacement seems reasonable.
When that becomes a great concern Jess, I've heard they have a pill for that. |
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« Last Edit: May 04, 2019, 01:50:50 PM by pancho »
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The most expensive things you will purchase, are those things you would not have needed if you had listened and obeyed.
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Jess from VA
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« Reply #16 on: May 04, 2019, 03:07:10 PM » |
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When that becomes a great concern Jess, I've heard they have a pill for that.Yeah Ponch, about 15yo, a neighbor gave me one to try out. (not that I needed it, but you know, curiosity) Man, that thing worked. It was pretty humorous when I entered the bedroom with my bike half helmet fully supported. (look, no hands)
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« Reply #17 on: May 04, 2019, 03:10:53 PM » |
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Image size?
My first thought is if that was the problem and they couldn't be displayed by the forum, I couldn't see them either?? Create an account using SIGN UP box top right Create a new gallery by clicking on the box towards the top left Upload photos. Do max of 4 at a time or it can take too long. Once uploaded put your cursor on the image you want to put on the VRCC forum Now move your cursor to the symbol to left of the trash bin symbol Click on it Now copy the "Hotlink" for forums. Now go to the VRCC post you want the photo to appear in and right click and paste. Once you then post your comment the photo should appear for all to see. |
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pancho
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« Reply #18 on: May 05, 2019, 02:07:32 AM » |
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When that becomes a great concern Jess, I've heard they have a pill for that.Yeah Ponch, about 15yo, a neighbor gave me one to try out. (not that I needed it, but you know, curiosity) Man, that thing worked. It was pretty humorous when I entered the bedroom with my bike half helmet fully supported. (look, no hands) That's another image burned indelibly on my mind..... Thanks Jess |
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The most expensive things you will purchase, are those things you would not have needed if you had listened and obeyed.
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