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rs140 jets premix

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Nobby the Bastard
Harley Gaydar



Joined: 16 Aug 2013
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PostPosted: 13:30 - 19 Jan 2020    Post subject: Reply with quote
Tegerra wrote:
ok thanks, but you just put your hand on the throttle, slowly apply it and listen if it sounds rich or lean, or hesitates to rev or splutters. Go down or up in jet sizes until it goes up and comes down fast and steady without spluttering and sounds clean af. When it sounds perfect, you could try to go a bit leaner for a bit of extra power at the cost of reliability. And if you want to experiment, keep going leaner until symptoms show up, and you know the border, and should go a few of jets higher for reliability. As easy as that. You just need to know the symptoms of rich and lean very well visually, theoretically and aurally. And i did make it do 0-100 in 6 seconds. Dyno saves time, but this saves money. Wink


If you are such a fucking expert, why are you asking us?
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Tankie
Crazy Courier



Joined: 24 Feb 2017
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PostPosted: 16:53 - 19 Jan 2020    Post subject: Reply with quote
I think I asked the same Question earlier in the week on another thread
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Robby
Dirty Old Man



Joined: 16 May 2002
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PostPosted: 21:58 - 20 Jan 2020    Post subject: Reply with quote
So you're trying to tune an engine with no load on it.

Good luck.
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Sister Sledge
World Chat Champion



Joined: 17 Aug 2018
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PostPosted: 08:38 - 21 Jan 2020    Post subject: Reply with quote
Robby wrote:
So you're trying to tune an engine with no load on it.

Good luck.


Exactly what was going through my head when I reap ops tuning method lol.
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Tegerra
Derestricted Danger



Joined: 13 Jan 2020
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PostPosted: 20:10 - 04 Feb 2020    Post subject: Reply with quote
oh my god. i was asking for experiences. how should i have experience of something i have no experience of? Laughing and i did mention about the paddock stand method, which does put load on it as far as i know, of course correct me if im wrong lol. dont you brits even read before you post a reply? XD
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MarJay
But it's British!



Joined: 15 Sep 2003
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PostPosted: 09:04 - 05 Feb 2020    Post subject: Reply with quote
Tegerra wrote:
oh my god. i was asking for experiences. how should i have experience of something i have no experience of? Laughing and i did mention about the paddock stand method, which does put load on it as far as i know, of course correct me if im wrong lol. dont you brits even read before you post a reply? XD


Only the weight of the wheel. It needs actual load on it like a dyno or... y'know a road ride?
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Easy-X
Super Spammer



Joined: 08 Mar 2019
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PostPosted: 13:14 - 05 Feb 2020    Post subject: Reply with quote
This thread still going?!

Mix up some 20:1 wack in a big jet. Go down the road trailing smoke like a steam train, maybe consider the next smallest jet if performance is particularly bad. Rinse, repeat till you're happy the engine's "run in" Smile

As long as you err on the side of rich fuel / high oil what's the worst that could happen?*

*Walks away briskly whistling the Dr.Pepper tune
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Nobby the Bastard
Harley Gaydar



Joined: 16 Aug 2013
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PostPosted: 16:26 - 05 Feb 2020    Post subject: Reply with quote
Cant you run it in on the dyno whilst sorting the jetting?
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stevo as b4
World Chat Champion



Joined: 17 Jul 2003
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PostPosted: 23:56 - 05 Feb 2020    Post subject: Reply with quote
Bloke is a bit of a nut case IMO. There's enough information out there to get him a rideable setting for initial running in, which on a coated cylinder takes a few hours at the most, not 100's of miles of riding. The fact that he thinks putting the bike on a paddock stand as a form of dyno, or that revving an engine to the red line tells him what jetting to use to perfection, shows his level of experience.

No race track or dyno, with wideband o2 measuring equipment = never going to get a perfect set up or peak performance at least using unleaded fuel.
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Shaft
World Chat Champion



Joined: 27 Dec 2010
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PostPosted: 00:58 - 06 Feb 2020    Post subject: Reply with quote
Robby wrote:
So you're trying to tune an engine with no load on it.

Good luck.


What was the old plug chop method, get on the road, redline it in third, hit the kill switch, coast to a halt, then check the plug colour?

Or something like that, it's getting on for 40 years since I last guesstimated the jetting for a 2 smoke.
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Old Thread Alert!

The last post was made 4 years, 79 days ago. Instead of replying here, would creating a new thread be more useful?
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