G oog le BadWeB | Login/out | Topics | Search | Custodians | Register | Edit Profile


Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through April 20, 2007 » Free Horsepower « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Spatten1
Posted on Sunday, April 15, 2007 - 02:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

OK-

I've been struggling in the mountains because at 8k feet and higher my bike runs like dog crap in open loop. Horrible power.

I finally found a road at 8k feet where I could run steady state 3,000 rpm for a few miles.

It is like a new bike. For some reason during normal transitional riding my ECM would not adjust to altitude for open loop. The steady state ride definitely did it.

The difference in roll on is night and day. Like I went from a moped to a.......XB9.

Happy days are here again.

(Message edited by spatten1 on April 15, 2007)
Top of pagePrevious messageNext messageBottom of page Link to this message

Ft_bstrd
Posted on Sunday, April 15, 2007 - 04:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Now if I could just get my bike to 8,000 feet. ;)
Top of pagePrevious messageNext messageBottom of page Link to this message

Dtx
Posted on Sunday, April 15, 2007 - 08:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Spatten,

I have ridden in Colorado before and experienced the delay it takes for the ECM to learn the atmosphere. Once it does, it runs like a bat outta hell. In fact, I think the bike practically runs better/stronger at higher elevations. YMMV.
Top of pagePrevious messageNext messageBottom of page Link to this message

Old_man
Posted on Sunday, April 15, 2007 - 08:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

If the air is cold it helps give power.
When I ride in the cold weather the bike seems supercharged.
Top of pagePrevious messageNext messageBottom of page Link to this message

Cityxslicker
Posted on Tuesday, April 17, 2007 - 02:05 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

here I thought you were going to tell me to get a power to weight ratio by cutting down on my beer and pizza intake
Top of pagePrevious messageNext messageBottom of page Link to this message

Corporatemonkey
Posted on Tuesday, April 17, 2007 - 04:16 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Question, I might be visiting Colorado on my bike this summer, is this something I am going to experience, or will the bike adjust on the way up.

Something about a heavily load bike, lack of power, and steep grades gives me the heebies.
Top of pagePrevious messageNext messageBottom of page Link to this message

Teeps
Posted on Tuesday, April 17, 2007 - 08:59 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

As I understand the operation, the ECM needs to see a "Steady State" cruise condition 3k RPM to 3.5k RPM, with no or little change in TPS input, in order to recalibrate or learn the ambient conditions.
Top of pagePrevious messageNext messageBottom of page Link to this message

Spiderman
Posted on Tuesday, April 17, 2007 - 09:33 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

All you did was reset the AFV
(Adaptive Fuel Value)


Helps in most situations where the bike is running ruff.
Top of pagePrevious messageNext messageBottom of page Link to this message

Elf
Posted on Tuesday, April 17, 2007 - 10:48 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Corporatemonkey,

Hey, When are you thinking about coming? Sounds like a meet-up and a canyon blast or 2 will be necessary! Are you going to be "jus' passin' thru", or is CO. the destination?

I don't think you'll have too much problem if you ride the bike here. It will adapt gradually along the way. It's when when you tote it here from lower elevations the thin air becomes a problem. No adaptation time. I had problems with my '89 Hawk and my '85 S-10 in this respect. I trailered them both when I moved here. The Hawk needed a re-jet, and the truck needed a little time to adapt.
Top of pagePrevious messageNext messageBottom of page Link to this message

Tx05xb12s
Posted on Tuesday, April 17, 2007 - 11:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I'm planning a trip to The Springs in August to see my sister. I'll be pulling a small trailer behind the Buell with my camping gear, but would love to drop it off and take a ride with you CO guys. Shoot me a PM if you feel like it.
Top of pagePrevious messageNext messageBottom of page Link to this message

Moondust
Posted on Tuesday, April 17, 2007 - 11:38 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

How do you reset the AVF ?

is this a dealer/workshop thing or can we mortals do it in the garage ?
Top of pagePrevious messageNext messageBottom of page Link to this message

Spiderman
Posted on Tuesday, April 17, 2007 - 11:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

the simplest way is to ride your bike at 60 mph in 4th gear for a a minuet or two
Top of pagePrevious messageNext messageBottom of page Link to this message

Xbeau12s
Posted on Tuesday, April 17, 2007 - 05:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

or 3rd gear at 55 and 3500 RPM. I live at approximately 6000 feet above and I "learned" it that way and also I brought my bike in for the TPS reset and they also adjusted my AFV to 100% and that made a huge difference. I think my idle should be lower though because it kind of takes a while to drop sometimes and I've heard this fixes that problem (lowering the idle to about 1000)
Top of pagePrevious messageNext messageBottom of page Link to this message

Spatten1
Posted on Tuesday, April 17, 2007 - 08:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

the simplest way is to ride your bike at 60 mph in 4th gear for a a minuet or two

or 3rd gear at 55 and 3500 RPM.


So do you need to find a road where you can do a steady state ride at each new elevation?

What I'm reading is that if you keep riding hard in the mountains, on and off the throttle, the ECM will not adjust to new altitudes. It that correct?
Top of pagePrevious messageNext messageBottom of page Link to this message

Corporatemonkey
Posted on Wednesday, April 18, 2007 - 12:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Elf,

I haven't decided if CO is in this years trip. I probably will be, but I don't have any firm plans.
I will travel until the credit card gives out...

I do know I am doing a short trip to Montana this summer (anyone want to join?) The parks department is getting serious about closing the "going to the sun road" to outside traffic. I have to ride it before they close it. I figure I could do it in a couple of days.
« Previous Next »

Add Your Message Here
Post:
Bold text Italics Underline Create a hyperlink Insert a clipart image

Username: Posting Information:
This is a private posting area. Only registered users and custodians may post messages here.
Password:
Options: Post as "Anonymous" (Valid reason required. Abusers will be exposed. If unsure, ask.)
Enable HTML code in message
Automatically activate URLs in message
Action:

Topics | Last Day | Tree View | Search | User List | Help/Instructions | Rules | Program Credits Administration