Bike tuning aid

CBR Forum Classifieds News Photo Gallery Search Member List Timeslips Contact Sponsors Register Login

Bike tuning aid

Printable Version

CBR Forum >> Past CBR Models >> CBR 1000F "Hurricane" >> Bike tuning aid

Page: [1]

Message

<< Older Topic Newer Topic >>

Bike tuning aid - 8/22/2008 8:27:59 AM

R1000

Posts: 1129
Joined: 1/30/2006
From: Sweden
Status: offline

Here is a great instrument which provide good help in tuning the bike. http://www.autometer.com/cat_gaugedetail.aspx?gid=3604&sid=11 These items are relatively cheap on ebay stores.

The basic principle for tuning a carbed bike is:
1. Adjust the float levels per spec.
2. Select main jets so the A/F ration is about 13 to 1 at wide open throttle under load
3. Adjust the height of the needles so the midrange A/F-ratio is about 13 to 1 under load
4. Adjust the pilot jets so the bike responds nicely from idle and up to a few 1000 rpm''s

Thumbnail Image

Attachment (1)

Post #: 1

RE: Bike tuning aid - 8/22/2008 9:41:15 AM

Bassman

Posts: 72
Joined: 7/6/2006
From: Hamden, CT USA
Status: offline

Couldn''t find the price or how it hooks up to our bikes.

_____________________________

Bassman
''93 CBR 1000F
''89 GB 500
''83 XR 350R
''76 CB 400F

(in reply to R1000)

Post #: 2

RE: Bike tuning aid - 8/22/2008 1:56:44 PM

R1000

Posts: 1129
Joined: 1/30/2006
From: Sweden
Status: offline

quote:

ORIGINAL: Bassman

Couldn''''t find the price or how it hooks up to our bikes.

Here is one on ebay, there is plenty of them http://cgi.ebay.com/ebaymotors/AUTOMETER-ULTRA-LITE-WIDEBAND-AIR-FUEL-RATIO-KIT-4378_W0QQcmdZViewItemQQcategoryZ46100QQihZ016QQitemZ260278180264QQrdZ1QQsspagenameZWDVW

The installation appears to be quite simple. You need to weld a M18*1.5 nut on the collector, which will hold the included Bosch Wide Band O2-sensor. This stud is already in place on later FI-bikes. Then it is just to interconnect the gauge to the O2-sensor (Lambda probe http://en.wikipedia.org/wiki/Oxygen_sensor), plus 12V and ground.

My unit was sent from US this evening, I''ll report my findings when it is installed. I guess it will take a week or so for getting it to Sweden.

(in reply to Bassman)

Post #: 3

RE: Bike tuning aid - 8/22/2008 5:16:08 PM

devildogsc

Posts: 46
Joined: 1/3/2008
From: Greenville, SC
Status: offline

awesome. I am much interested in hearing how it works for you. I know mine is out of tune and needs some adjusting. This instrument sounds like a godsend.

_____________________________

If we had ham we could have ham and eggs, if we had eggs.

(in reply to R1000)

Post #: 4

RE: Bike tuning aid - 8/22/2008 6:43:19 PM

idodirt

Posts: 770
Joined: 8/14/2006
From: South Florida, USA
Status: offline

Very cool, keep us posted. I''m sure it will be much more time consuming to tune a carbureted bike than a FI bike. Much easier to change a program than to replace or shim needles, swap out jets, and things such as this. But still worth looking at.

_____________________________

On the shore of Lake Okeechobee.

(in reply to R1000)

Post #: 5

RE: Bike tuning aid - 9/7/2008 1:33:28 AM

R1000

Posts: 1129
Joined: 1/30/2006
From: Sweden
Status: offline

quote:

ORIGINAL: idodirt

Very cool, keep us posted. I''''m sure it will be much more time consuming to tune a carbureted bike than a FI bike. Much easier to change a program than to replace or shim needles, swap out jets, and things such as this. But still worth looking at.

The meter is in place and works as expected :-)

The O2 sensor (wideband lambda) is screwed into a threaded stud, which is welded to the collector. I thougt it would be difficult to drill a 20 mm hole in the stainless steel tube, but it was easy with a 15 buck HSS conical drill.

Thumbnail Image

Thumbnail Image

Attachment (2)

(in reply to idodirt)

Post #: 6

RE: Bike tuning aid - 9/7/2008 2:32:07 PM

Mr Self Destruct

Posts: 31
Joined: 5/31/2007
Status: offline

Or you can DIY like I do and get this:

http://www.14point7.com/JAW/JAW.htm

_____________________________

http://personal.nbnet.nb.ca/bmacph/hurricane/hurindex.htm

(in reply to R1000)

Post #: 7

RE: Bike tuning aid - 9/8/2008 8:49:05 AM

R1000

Posts: 1129
Joined: 1/30/2006
From: Sweden
Status: offline

Great link, thanks. I may use it in case I need another sensor.

(in reply to Mr Self Destruct)

Post #: 8

RE: Bike tuning aid - 9/8/2008 9:08:12 AM

Shadow

Posts: 3630
Joined: 12/21/2007
From: Pinetown, South Africa
Status: offline

Hey, R1000, any more gauges and you''ll need a pilot''s licence for your ''Busa !

(in reply to R1000)

Post #: 9

RE: Bike tuning aid - 9/8/2008 9:59:57 AM

R1000

Posts: 1129
Joined: 1/30/2006
From: Sweden
Status: offline

Yeah, another license would be fine, just in case ...

(in reply to Shadow)

Post #: 10

RE: Bike tuning aid - 9/8/2008 1:44:21 PM

kilgoretrout

Posts: 202
Joined: 3/30/2006
From: PA, USA
Status: offline

Oh, I see...
Another reason for R1 to slap up a pic of his ''busa, eh?

Damn swedes already have beautiful women, excellent meatballs, and those delectable swedish fish.
Now a Hayabusa?