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Old 05-23-2013, 07:48 AM   #76951
Bronco638
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Joined: Dec 2004
Location: Itasca, IL
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Quote:
Originally Posted by motolab
Unfortunately no CO traces.

Regards,

Derek
Yes Derek, you knew that. I told you I was having no luck finding a bike dyno, in Chicago-land, with CO tracing. What was I supposed to do?
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Old 05-23-2013, 11:27 AM   #76952
motolab
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Quote:
Originally Posted by Bronco638 View Post
Yes Derek, you knew that. I told you I was having no luck finding a bike dyno, in Chicago-land, with CO tracing.
Yes. You did say it in a previous post. I saw it and promptly forgot.
Quote:
What was I supposed to do?
That's obviously for you to decide, but I would have recommended continuing/widening the search. Did you make inquiries with Factory Pro, SuperFlow and Land & Sea?

Regards,

Derek
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Old 05-23-2013, 01:57 PM   #76953
YnotJP?
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Joined: Dec 2007
Location: Philippines and Seattle
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Does anyone have a stock BST-40 Carb they would like to sell? I came to Seattle from the Philippines and found some parts are missing from mine, like the float weight, and the brass part of the needle value.

Please message me if you want to sell a stock BST-40.
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Old 05-23-2013, 02:39 PM   #76954
243Win
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Joined: Jan 2008
Location: Port Orchard, WA
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Quote:
Originally Posted by YnotJP? View Post
Does anyone have a stock BST-40 Carb they would like to sell? I came to Seattle from the Philippines and found some parts are missing from mine, like the float weight, and the brass part of the needle value.

Please message me if you want to sell a stock BST-40.
PM sent
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Old 05-23-2013, 03:31 PM   #76955
motolab
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Quote:
Originally Posted by YnotJP? View Post
I came to Seattle from the Philippines and found some parts are missing from mine, like the float weight, and the brass part of the needle value.
This "float weight" thing has confusion caused for a number of people. If you saw the term used in the BST40 bible, it's an incorrect term, and I'm not sure what it was originally supposed to refer to. As far as brass float-related parts, I'll assume you must be referring to the float needle seat, which is brass on BST40-equipped KTM LC4s but integral to the float assembly (and therefore plastic) on DR650s.

Regards,

Derek
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Old 05-23-2013, 03:35 PM   #76956
Albie
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Joined: Mar 2004
Location: NWA
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Wow, what a difference!

So a couple years ago when I bought my DR it came with a TM-40 carb, modded air box and a full FMF system. I never really liked the set up when I would ride it back to back with my buddy's DR that is all stock. Well I managed to find a BST carb and unmodified air box for cheap, and the PO gave me the stock exhaust with the bike.

So I got all the stock stuff bolted on today and took it for a test ride. Man, the bike just runs sooooo much better. It revs up much quicker, in fact I almost ran into the back end of my buddy not expecting it to accelerate that quickly. The bike just runs much smoother and the quiet exhaust is just a relief after that noisy assed FMF can.

It's actually easier to ride, especially doing some climbs on some pretty rutted out and muddy hills. With the pumper carb I seemed to always have to shift a lot more trying to keep up the revs. With the BST I can lug it and the bike will still pull. I have a feeling I'm going to see an improvement on mileage as well.

The only down side is the obvious increase in weight, but this is a pig of a bike anyway so I can live with a half dozen extra lbs.
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Old 05-23-2013, 04:05 PM   #76957
hrspwrfiend
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Joined: Apr 2012
Location: Haines, AK
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Quote:
Originally Posted by Albie View Post
So a couple years ago when I bought my DR it came with a TM-40 carb, modded air box and a full FMF system. I never really liked the set up when I would ride it back to back with my buddy's DR that is all stock. Well I managed to find a BST carb and unmodified air box for cheap, and the PO gave me the stock exhaust with the bike.

So I got all the stock stuff bolted on today and took it for a test ride. Man, the bike just runs sooooo much better. It revs up much quicker, in fact I almost ran into the back end of my buddy not expecting it to accelerate that quickly. The bike just runs much smoother and the quiet exhaust is just a relief after that noisy assed FMF can.

It's actually easier to ride, especially doing some climbs on some pretty rutted out and muddy hills. With the pumper carb I seemed to always have to shift a lot more trying to keep up the revs. With the BST I can lug it and the bike will still pull. I have a feeling I'm going to see an improvement on mileage as well.

The only down side is the obvious increase in weight, but this is a pig of a bike anyway so I can live with a half dozen extra lbs.

Sounds to me like the TM-40 wasn't properly jetted.
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Old 05-23-2013, 04:13 PM   #76958
Albie
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Joined: Mar 2004
Location: NWA
Oddometer: 9,409
Quote:
Originally Posted by hrspwrfiend View Post
Sounds to me like the TM-40 wasn't properly jetted.
Spent 3 days messing with the jetting on the TM-40. Took 5 minutes to get the BST properly jetted.
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Old 05-23-2013, 04:20 PM   #76959
YnotJP?
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Joined: Dec 2007
Location: Philippines and Seattle
Oddometer: 2,394
Motolab, You just made my day. I guess I am not missing anything. I really could not figure out how that brass piece worked with the plastic part that I have, but, then I have never been able to set a digital watch either.
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Old 05-23-2013, 04:41 PM   #76960
Foot dragger
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Joined: Dec 2006
Location: chico,just below rag dump(nor-cal)
Oddometer: 12,848
Quote:
Originally Posted by Albie View Post
So a couple years ago when I bought my DR it came with a TM-40 carb, modded air box and a full FMF system. I never really liked the set up when I would ride it back to back with my buddy's DR that is all stock. Well I managed to find a BST carb and unmodified air box for cheap, and the PO gave me the stock exhaust with the bike.

So I got all the stock stuff bolted on today and took it for a test ride. Man, the bike just runs sooooo much better. It revs up much quicker, in fact I almost ran into the back end of my buddy not expecting it to accelerate that quickly. The bike just runs much smoother and the quiet exhaust is just a relief after that noisy assed FMF can.

It's actually easier to ride, especially doing some climbs on some pretty rutted out and muddy hills. With the pumper carb I seemed to always have to shift a lot more trying to keep up the revs. With the BST I can lug it and the bike will still pull. I have a feeling I'm going to see an improvement on mileage as well.

The only down side is the obvious increase in weight, but this is a pig of a bike anyway so I can live with a half dozen extra lbs.
FMF's are loud,maybe their newest Q model is quieter but Id hate to have to listen to the noise all day on my DR,I have the older Q muffler on my 530 and it runs great that way,but can be heard a ways off.

With just a 14 tooth countershaft sprocket my DR will climb great and slide corners in the dirt easily,the only way a DR will keep up with a 530 is to toss both out of a plane and see which falls faster.
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Old 05-23-2013, 04:56 PM   #76961
Slideways#96
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Joined: Nov 2011
Location: Northern NM
Oddometer: 547
Quote:
Originally Posted by ER70S-2 View Post
The factory screws are 5mm x 15mm x .8 pitch

Thanks to 2laneblacktop:
http://www.advrider.com/forums/showp...ostcount=26847
Thank you sir!
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Old 05-23-2013, 06:03 PM   #76962
thump!
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Location: Northeast Tennessee
Oddometer: 1,351
Quote:
Originally Posted by Foot dragger View Post
FMF's are loud,maybe their newest Q model is quieter but Id hate to have to listen to the noise all day on my DR,I have the older Q muffler on my 530 and it runs great that way,but can be heard a ways off.

With just a 14 tooth countershaft sprocket my DR will climb great and slide corners in the dirt easily,the only way a DR will keep up with a 530 is to toss both out of a plane and see which falls faster.
Actually 32 ft/sec/sec regardless of mass.
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Old 05-23-2013, 10:06 PM   #76963
Chill
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Joined: Aug 2012
Location: QLD Australia
Oddometer: 315
I'm still debating the muffler issue. I've found a 2nd hand Gixer pipe but it's working out to be $400+ once I've factored in the mid pipe etc, and that's a lot considering the end result will be a 10 year old frankenstein exhaust. For that price I could....

Looking at the FMF Q4 on the procycle site... so how quiet is quiet? Does anyone have recent experience of these? Is it possible to pack them more and make them quieter? I have an FMF header already and it runs well with the STD airbox (+K&N filter) and STD carb. If I add the end pipe will it still run well or will I have to rejet? I'm a bit confused with rejetting, is it done to balance changes to the airbox and/or changes to the exhaust? I'd like to keep the airbox and carb standard if possible.
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Old 05-23-2013, 10:13 PM   #76964
warp9man
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Joined: Jun 2008
Location: Farmington Utah
Oddometer: 599
Hey guys, I couldnt stand it any longer. After listening to my DR and nearly every other DR I came across sound like the starter was a squealing pig I took one apart and found that the backside of the starter has a simple brass bushing in it that wears out. My bike had around 8k miles on it when the starter started squealing, I took it apart and greased the bushing and that worked for a while then it went back making that embarrassing sound that makes you hold your head in shame when you hit the E-buttonghead:. I couldnt take it any longer so off to the CAD program I went and came up with this little beauty.

Behold!! A new starter cap with a real sealed bearing in it for the armature shaft :





I have been running the prototype for some time now. Im pretty happy with how it turned out. A few quick mods and she going into production after the holiday.

I hope you guy's approve



This should make the starter brushes last longer and reduce the amp's needed to start the bike when your bushing is headed south.

warp9man screwed with this post 05-23-2013 at 10:36 PM
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Old 05-23-2013, 10:20 PM   #76965
eakins
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Joined: May 2002
Location: Fort Collins, Colorado
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Oh that's sweet Kevin!
Bet those will be real popular as most every DR squeals.
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