Author Topic: Jetting?  (Read 2864 times)

Offline mick

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Re: Jetting?
« Reply #30 on: May 15, 2019, 10:40:13 PM »
I saw your bike at Knott End Cafe tonight Arch looks great in the flesh  ;), cheers Mick.

Offline Arch stanton

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Re: Jetting?
« Reply #31 on: May 15, 2019, 11:11:51 PM »
Hello Mick.
Thank you for your kind words.
I saw another  two there. Common as muck they are!
Am I to take it. Yours was the very shiny one in Gold?
Regards.
Sean.

Offline robvangulik

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Re: Jetting?
« Reply #32 on: May 21, 2019, 12:18:27 PM »
It seems I am the only one that is curious about the result of the Dynorun.... ;)

Offline Arch stanton

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Re: Jetting?
« Reply #33 on: May 21, 2019, 08:47:51 PM »
Hello Rob.
If you are referring to my bike setup.
I haven't had time to have it ona Dyno.
But after lifting the needles. I feel this may not be necessary.
Sean.

Offline robvangulik

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Re: Jetting?
« Reply #34 on: May 21, 2019, 09:56:45 PM »
O sorry, now i read it back it was Mark CR750 who posted that youtube link of the Dyno.

Offline MarkCR750

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Re: Jetting?
« Reply #35 on: May 22, 2019, 07:28:40 AM »
Rob, I asked Sam to treat the bike gently on the Dyno, I wasn’t interested in how much power it was making just was the fuelling safe, he took it up to 7750 revs, max power was 54bhp if I remember correctly, he said it would have made more with a less restrictive silencer but who knows, I figured that Honda would have been lying about the original claimed 67bhp and it would have been measured at the crank, so in reality CB750’s probably make just over 60bhp at the crank, add in a few bhp to my results to compensate for it being measured as RWHP and it wasn’t far off what it should have been making.
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Ducati 900SS (Soul & Speed)
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Offline robvangulik

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Re: Jetting?
« Reply #36 on: May 22, 2019, 10:11:21 AM »
That is not bad at all, I've seen lots having about 50 hp at the wheel, so taken into consideration that chain and gearbox will consume their fair share of power 54 is a nice number.

 

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