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| H1 petcock - how much can it deliver ? http://www.kawi2strokes.com/forum/viewtopic.php?f=14&t=12436 |
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| Author: | Neville Lush [ Mon Feb 20, 2017 9:07 pm ] |
| Post subject: | Re: H1 petcock - how much can it deliver ? |
That is why I think it is marginal. I used to regularly get 13mpg from my stock H1-B and it would do a massive lean sneeze if held WOT for more than a mile or so. Then I corrected fuel flow. Fixed it. I realise the bike may never be ridden like that, but it is heaps easier to check the fuel flow now, than change pistons later. |
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| Author: | RODH2 [ Mon Feb 20, 2017 9:16 pm ] |
| Post subject: | Re: H1 petcock - how much can it deliver ? |
So what type of tap would you use in a street H2, for example, given that you pretty much need a reserve position.....? |
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| Author: | Ja-Moo [ Mon Feb 20, 2017 9:56 pm ] |
| Post subject: | Re: H1 petcock - how much can it deliver ? |
I think one will find without the filters, the flow is more than enough, just looking at them the inlet and outlet are smaller than the 3/16" hose. And as I did, it's easy to convert the stock petcock to 1/4" lines. And I run all 3 38's off of one spigot. |
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| Author: | 900SL [ Tue Feb 21, 2017 1:29 pm ] |
| Post subject: | Re: H1 petcock - how much can it deliver ? |
Ja-Moo wrote: According to your picture in the other thread, you have the filters installed backwards. I don't think it makes a big difference though. Your'e quite right, Ja-Moo!. Thanks!! I oversaw the arrow on all three filters. So when I make errors, I'm consistent and do it properly  Will make another test... |
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| Author: | 900SL [ Tue Feb 21, 2017 1:30 pm ] |
| Post subject: | Re: H1 petcock - how much can it deliver ? |
Neville Lush wrote: That is why I think it is marginal. I used to regularly get 13mpg from my stock H1-B and it would do a massive lean sneeze if held WOT for more than a mile or so. Then I corrected fuel flow. Fixed it. I realise the bike may never be ridden like that, but it is heaps easier to check the fuel flow now, than change pistons later. Exactly, Neville
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| Author: | 900SL [ Tue Feb 21, 2017 2:31 pm ] |
| Post subject: | Re: H1 petcock - how much can it deliver ? |
Ja-Moo wrote: Say you are getting a dismal 10mpg, and you are doing 120 mph for 1 minute. That's 2 miles in a minute. So you are looking at 2 miles at 10mpg, or 1/5th of a gallon. There are 3785.41 cc's in a gallon, so 1/5th of 3785 is 757cc's. Just the math of it all........ Yeah - I get your point - even though miles and (us) gallons aren't my natural preferences I'll do another test, with filters pointer the right way, and one without the external filters. I still have 2 Suzuki  filters mounted on petcock + the strainer.
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| Author: | 900SL [ Mon Feb 27, 2017 3:02 pm ] |
| Post subject: | Re: H1 petcock - how much can it deliver ? |
900SL wrote: Ja-Moo wrote: According to your picture in the other thread, you have the filters installed backwards. I don't think it makes a big difference though. Your'e quite right, Ja-Moo!. Thanks!! I oversaw the arrow on all three filters. So when I make errors, I'm consistent and do it properly Will make another test... Did a new test during the weekend: Approx 16 sec for 250 ccm without hoses and filters Aprox 17,5 sec for 250 ccm with hoes and filters installed the right way  That more than 2 secs faster than my earlier attempt.I'll dare to conclude that the petcock can deliver sufficient amounts of Go-Go juice for riding WOT. Maybe not for hours, but at least for my intended use. If I'll rely on the Suzuki filters on the petcock alone + the strainer I can cut another 2 secs. of: 
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