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Author Topic: Re: Coxylaads Road Bike Thread thing split off blog topic thingy  (Read 8338 times)

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Online Rob the Nog

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #422 on: 13:22 - 21 May, 2019 »
Certainly beats pulling ZRX carbs off to feck about with jets and needle heights every five minutes  :bag

Offline CoxyLaad

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #421 on: 12:46 - 21 May, 2019 »
and I quote:
'The line it is drawn
The curse it is cast
The slow one now
Will later be fast
As the present now
Will later be past
The order is
Rapidly fadin'.
And the first one now
Will later be last
For the times they are a-changin'.

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Coxylaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaa d!!!

Offline Readmarx

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #420 on: 12:38 - 21 May, 2019 »
Apps and updates and compatibility and cables and blah blah blah

And filters and seals and jets, needles and float heights and blah blah blah

Did Bill Gates just reinvent the wheel!?


 :eat

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Offline CoxyLaad

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #419 on: 12:16 - 21 May, 2019 »
That's pretty much the same as this one. I have the option of updating trim maps, or mapping direct to the injection tables if I want.

I have purchase a USB extension lead, so I should be able to keep the laptop connect with it in my backpack.


My exhaust has 3 lambda ports - the stock one in the middle, and one much higher up much closer to the head in each header pipe. The plan is to build a map that is pretty close to to the ideal, then, split the injection map so there is one for each cylinder, and individually map each cylinder with a much finer set of constraints.

I should end up with a very nicely mapped bike that is specifically mapped for the small differences in each combustion chamber.

I might also stump up for some high performance coils as a belt and braces setup. I'm fairly certain the bogging/missing I am getting is caused by not enough 'accelerator pump'  at low rpm. so you snap the throttle open and it the low air speed in the tbs makes all the fuel drop out of suspension. There are various settings in the compensation maps for this. I don't want to muck on with them just yet before I get a decent base map.
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Online Rob the Nog

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #418 on: 10:01 - 21 May, 2019 »
When I had the power commander autotune on the FZ1 it built a trim map separately to the actual fueling map, so you could see where it had decided that more or less fueling was needed.

You could take out any odd results and then accept the trim which would rebuild the fuel map based on the new data.  Would have thought it would have worked in a similar way.

I guess that was specifically designed for on the fly bike tuning whereas this is designed more for dyno guys who would be running the autotune with the laptop connected while ragging it on the dyno.

On the road it's a pain though as any throttle fluctuations cause dodgy results, so you have to find nice clear road where you can do a clean roll on throughout the rev range.  I think it said only to accept minor changes in fueling each time you do a run and after a few runs it should be getting there, but see how you go, that might be better software with it tied in directly to the lappy.

Offline CoxyLaad

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #417 on: 09:24 - 21 May, 2019 »
so, misfire sorted, almost.

if I crack the throttle at 2.5k rpm when its hot it can stutter. no where near what it was like, but its still not acceptable to me.

So, I set my autotuning thing up and headed out. The bike has a flattish spot at 4000 to 5000rpm, then at 5500rpm it goes mental. a big step in power output.

I ran up and down the a19 accelerating through this rev range, and it couldnt really tell any difference.
So I came back and connected the laptop and confirmed it had autotuned nothing. So when I checked the manual it appears autotuning only happens with the laptop connected. erm, thats going to be a problem! 

So my plan is to get a usb extender, stick the laptop in my back back with the power mode set not to shut down with the lid closed, and go ride. A bit weird for an autotune setup but when it rome.

Proper fast and furious style riding along fiddling with my laptop. Going to try that tonight.
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Offline CoxyLaad

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #416 on: 15:08 - 15 May, 2019 »
this arrived today:


wideband lambda with controller unit to plug directly into my ecu for mapping.  should allow me to see what is going on and get it mapped up on the road.

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Offline Readmarx

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #415 on: 21:28 - 14 May, 2019 »
Clutches are pricey all in but a simple solution even a Jeremy Kyle guest can get right
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Offline CoxyLaad

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #414 on: 12:31 - 13 May, 2019 »
I was one of those triumph people who had that problem. I built a bike for my dad from a reframed cat B breaker, but some of the parts had already been sold off, including the pipework at the back of the airbox.

At low throttle openings and low engine speeds its more accurate to meter fuel out based on manifold air pressure, on the triumph it was an utter pig without it, no power at all, then it would lurch forward like a horse that had been smacked on the ar5e [filtered] with a shovel.

The pipes on the 3 cylinders had to be the same length also, quite important.

Anyways I have ordered my wide band lambda set up to do some tuning on the road.

when it goes it goes pretty hard. so much so that I think the clutch is now slipping occasionally under 100% throttle.
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Offline Readmarx

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #413 on: 12:13 - 12 May, 2019 »
Lolz

On speed triples I've read dozens of posts with peeps freaked by similar symptoms usually sometime after doing something around the airbox where there's eight vital connections including the air pressure sensor, air temperature sensor and manifold pressure sensor.

As someone unsophisticated in this area having owned three injected bikes from three manufacturers with three variants of assorted sensors. In time I'll better understand how alien ECU's function on alien machines - presumably through software set to accept data from an array of available inputs. Given the control ECU works in MotoGP and you're doing something similar on your Yam I might have to soon start calling you Jeremy Burgess!
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Offline Vu Ja Dave

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #412 on: 00:29 - 12 May, 2019 »
Did you try switching it off 'n' on again?

Offline CoxyLaad

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #411 on: 23:59 - 11 May, 2019 »
i think I am going to invest in a wide band lambda setup to monitor the mixture.

was out again today, all was fine for the first hour or so, i was bimbling back through the villages to get home and the bike started misfiring on low throttle openings, then progressed to missing at bigger throttle openings.

when I got home I plugged the laptop in and had a look. I had disabled the inlet air pressure sensor as I forgot it had one. That is used for idling and very light throttle control.  I have re enabled it, and I am going to have a look to make sure its piped in properly. 

I hope thats what it is, I am pinning my hopes on the fact that the missing at bigger openings is because the plugs were getting fouled. 

The nagging doubt in my head is saying why didnt it do it all the time.  the only difference what that the air temperature dropped considerably when this started to happen.

I'll get there.

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Offline Readmarx

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #410 on: 00:24 - 11 May, 2019 »
Not having the slightest ability with an ECU I went to BDS, if I was doing it myself I’d go to JHS. My 850’s JE piston, flowed head, Stan Stephens (Ray Sringer) cams, TTS & PDQ rebuilds, Dynojet carbs, K&N, Dyna, Yoshi/Gibson blah, blah builds blew up 500miles after the slightest thing that didn’t work for another thing. Yams big twins were shite. Motors designed to trot along on carbs. OVER racing team in Japan couldn’t make them work. Injection for regulatory purposes was fine to a point. Keep it rich and under stressed IMHO!
« Last Edit: 00:35 - 11 May, 2019 by Readmarx »
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Offline CoxyLaad

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Re: Coxylaads Road Bike Thread thing split off blog topic thingy
« Reply #409 on: 21:56 - 10 May, 2019 »
had the bike out for a blast tonight.

the bottom end is completely sorted, however the top end feels likes its a bit flat between 5000 and 6000rpm.  I think its a bit lean. I am going to add a bit of fuel in that rev range at 80% to 100% and see what effect it has.
« Last Edit: 23:47 - 11 May, 2019 by CoxyLaad »
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Offline BashplateAlAssad

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Gary could be the brolly girl(guy), although I'm not sure how the team pervert would feel about that.
I withdraw my application forthwith.

How unfair!

Coxy, I'd stick it in the box with a hole in the bottom where the cables come in, small hole in each corner on the bottom, have a biccie an a cuppa. Water is a bitch, as long as you can keep most out. And a bit of vaseline on your contacts never hurts.
Gary.

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