ADVrider

Go Back   ADVrider > Bikes > Thumpers
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 03-12-2011, 06:23 AM   #7621
Greg Bender
Beastly Adventurer
 
Joined: Oct 2007
Location: Cave Creek, Arizona, United States
Oddometer: 1,069
Quote:
Originally Posted by scharfg View Post
I'm looking for some inexpensive but effective bark busters, suggestions?

Also do bar ends work in the DR or are the ends filled like I heard?

Thanks a bunch!
I've had good luck with the Tusk/D-Flex set up sold by Rocky Mountain ATV MC.

Regards,

Gregory Bender
Greg Bender is offline   Reply With Quote
Old 03-12-2011, 06:30 AM   #7622
shearboy2004
KIWIINUSA
 
shearboy2004's Avatar
 
Joined: Jun 2007
Location: Ft Collins ,Colorado
Oddometer: 4,303
Quote:
Originally Posted by dtp View Post
For good dual purpose tires look into the Pirelli MT43. They are going to be WAY better than any 50/50 tire off-road (better than full knobbies in some respects in fact) and will perform as good or better on-road as well.

Not everyone likes the front but the rears are pretty universally loved by many including myself.
+1 and they wear forever , I love the front to for the rocky off slope shit around here , grip like poo on a blanket.
__________________
88 R100GS
75 Norton Commando Roadster
98 DR450
07 Sherco 450 called BLING.
07 Sherco 510 called Holy Shit .
shearboy2004 is offline   Reply With Quote
Old 03-12-2011, 06:39 AM   #7623
GsVs
Goin' Somewhere
 
GsVs's Avatar
 
Joined: Dec 2002
Location: Hoosier (IN) USA
Oddometer: 1,404
Tusk

I've also had good luck with the Tusk ...
Had them on a WR250R and Super Sherpa ... fit easy on both bikes ...also fit without having to cut the balls off of the levers ...

Quote:
Originally Posted by Greg Bender View Post
I've had good luck with the Tusk/D-Flex set up sold by Rocky Mountain ATV MC.

Regards,

Gregory Bender
__________________
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- -
Honda
GsVs is offline   Reply With Quote
Old 03-12-2011, 07:12 AM   #7624
clab04
The Sprout
 
clab04's Avatar
 
Joined: Aug 2010
Location: Deep Gap, NC
Oddometer: 121
Sprocket size

I converted my DR 350 into a street only bike. I have the stock 18" rear wheel and whoever owned it before me put a 15t front and 54 rear sprocket configuration. It turns 3200rpm at 60 mph and I'm only getting 50mpg! I tip the scales at 135 so it doesn't know I'm there. I do mainly highway daly commutes but I live on the Blue Ridge Parkway so there is some carving going on too. So here is the question: what rear sprocket would give me mileage without killing my low end?
__________________
'92 DR 350 Dualsport

Hey hey hey! Don't you think he is dead enough?
Well he shouldn't have been playing on my side of the street!

clab04 screwed with this post 03-12-2011 at 07:26 AM
clab04 is offline   Reply With Quote
Old 03-12-2011, 07:32 AM   #7625
tpar1220
such a pud..
 
tpar1220's Avatar
 
Joined: Jan 2007
Location: martinsville... ish, in.
Oddometer: 2,459
Quote:
Originally Posted by clab04 View Post
I converted my DR 350 into a street only bike. I have the stock 18" rear wheel and whoever owned it before me put a 15t front and 52 rear sprocket configuration. It turns 3200rpm at 60 mph and I'm only getting 50mpg! I tip the scales at 135 so it doesn't know I'm there. I do mainly highway daly commutes but I live on the Blue Ridge Parkway so there is some carving going on too. So here is the question: what rear sprocket would give me mileage without killing my low end?

i think your gearing is killin your mileage. but you didn't comment on any other changes made to bike (carb/jetting).the way you are geared... sounds like you are lugging it to much. even though the engine rpm is low, the engine is working to hard to maintain that speed. 3200 rpm is way to low for 60 mph. try a 14 tooth up front and run a couple tanks thru it and see how that affects mileage.

mine is totally stock and i get tween 65 and 70 mpg... i turn 6000 rpm at 60.
__________________
this thing is AWESOME... and makes the mach V look like a vagina!

There will only be two things left moving after WW3.
Cockroaches & KLRs.
tpar1220 is offline   Reply With Quote
Old 03-12-2011, 07:56 AM   #7626
clab04
The Sprout
 
clab04's Avatar
 
Joined: Aug 2010
Location: Deep Gap, NC
Oddometer: 121
Quote:
Originally Posted by tpar1220 View Post
i think your gearing is killin your mileage. but you didn't comment on any other changes made to bike (carb/jetting).the way you are geared... sounds like you are lugging it to much. even though the engine rpm is low, the engine is working to hard to maintain that speed. 3200 rpm is way to low for 60 mph. try a 14 tooth up front and run a couple tanks thru it and see how that affects mileage.

mine is totally stock and i get tween 65 and 70 mpg... i turn 6000 rpm at 60.
Wow I thought I was turning to many. I have a strait through exhaust with stock jetting (my elevation compensated). It runs a bit lean in the winter but no problem durring spring and summer temps. If my math is right that would change my final ratio from 3.6:1 to 3.85:1. Is that enough to pull 6000 rpms?
__________________
'92 DR 350 Dualsport

Hey hey hey! Don't you think he is dead enough?
Well he shouldn't have been playing on my side of the street!

clab04 screwed with this post 03-12-2011 at 08:23 AM
clab04 is offline   Reply With Quote
Old 03-12-2011, 08:42 AM   #7627
clab04
The Sprout
 
clab04's Avatar
 
Joined: Aug 2010
Location: Deep Gap, NC
Oddometer: 121
Quote:
Originally Posted by clab04 View Post
Wow I thought I was turning to many. I have a strait through exhaust with stock jetting (my elevation compensated). It runs a bit lean in the winter but no problem durring spring and summer temps. If my math is right that would change my final ratio from 3.6:1 to 3.85:1. Is that enough to pull 6000 rpms?
One more thing. My manual shows a 14/47 stock configuration for '92.
__________________
'92 DR 350 Dualsport

Hey hey hey! Don't you think he is dead enough?
Well he shouldn't have been playing on my side of the street!
clab04 is offline   Reply With Quote
Old 03-12-2011, 09:24 AM   #7628
hajime
Gnarly Adventurer
 
hajime's Avatar
 
Joined: Feb 2010
Location: Las Vegas, NV
Oddometer: 196
Quote:
Originally Posted by Greg Bender View Post
I've had good luck with the Tusk/D-Flex set up sold by Rocky Mountain ATV MC.

Regards,

Gregory Bender

Me too.
__________________
Some part of our beings longs to join a band of brothers on a daring and intrepid quest. ~Carl Sagan
hajime is offline   Reply With Quote
Old 03-12-2011, 02:45 PM   #7629
slartidbartfast
Love those blue pipes
 
slartidbartfast's Avatar
 
Joined: Dec 2003
Location: Southern Louisiana or Southern England or ...
Oddometer: 4,781
Quote:
Originally Posted by clab04 View Post
I converted my DR 350 into a street only bike. I have the stock 18" rear wheel and whoever owned it before me put a 15t front and 54 rear sprocket configuration. It turns 3200rpm at 60 mph and I'm only getting 50mpg! I tip the scales at 135 so it doesn't know I'm there. I do mainly highway daly commutes but I live on the Blue Ridge Parkway so there is some carving going on too. So here is the question: what rear sprocket would give me mileage without killing my low end?
Generally, taller gearing will get you better gas mileage. That would mean going to a larger front sprocket and/or a smaller rear. With 15/52, you should be turning somewhere around 6500rpm at 60mph, so the numbers you provided don't make much sense.

To raise your gearing, since 15 is the largest stock size for the front, you should go to something smaller like 43 on the rear (the smallest stock size.) It is possible to get 16 for the front but you might have case clearance problems. I have come across rear sprockets as small as 41 but they are not common.

50mpg seems quite typical but I agree that for a reasonably gently ridden street bike I would expect more. Upping the gearing should get you some improvement but will not take you from 50mpg to 65 or 70. Indeed that may not be possible at all. A straight through exhaust will not necessarily help your gas mileage (and will certainly not help relations with your neighbors) so with stock jetting the mixture is probably off in parts of the rpm or throttle range. You either have stock jetting or you do not. There is no such thing a "stock elevation compensated" jetting from the factory. You must check the numbers on your actual idle jet, needle and main jet to be sure - but even then, the jets might have been drilled so you need to replace them to be sure. Expect quite a bit of trial and error adjusting to get it right.
__________________
MSF Ridercoach IBA: 35353 95 R1100GSA, 93 GTS1000, 85 R80RT, 93 DR350/435, 99 RX125, 78 DT100
January 2010 New Zealand South Island ride
Summer 2009 UK to Alps ride
Summer 2008 UK End-to-End ride
slartidbartfast is offline   Reply With Quote
Old 03-12-2011, 03:01 PM   #7630
shearboy2004
KIWIINUSA
 
shearboy2004's Avatar
 
Joined: Jun 2007
Location: Ft Collins ,Colorado
Oddometer: 4,303
Quote:
Originally Posted by slartidbartfast View Post
Generally, taller gearing will get you better gas mileage. That would mean going to a larger front sprocket and/or a smaller rear. With 15/52, you should be turning somewhere around 6500rpm at 60mph, so the numbers you provided don't make much sense.

To raise your gearing, since 15 is the largest stock size for the front, you should go to something smaller like 43 on the rear (the smallest stock size.) It is possible to get 16 for the front but you might have case clearance problems. I have come across rear sprockets as small as 41 but they are not common.

50mpg seems quite typical but I agree that for a reasonably gently ridden street bike I would expect more. Upping the gearing should get you some improvement but will not take you from 50mpg to 65 or 70. Indeed that may not be possible at all. A straight through exhaust will not necessarily help your gas mileage (and will certainly not help relations with your neighbors) so with stock jetting the mixture is probably off in parts of the rpm or throttle range. You either have stock jetting or you do not. There is no such thing a "stock elevation compensated" jetting from the factory. You must check the numbers on your actual idle jet, needle and main jet to be sure - but even then, the jets might have been drilled so you need to replace them to be sure. Expect quite a bit of trial and error adjusting to get it right.
+ 1 , right on the money.
__________________
88 R100GS
75 Norton Commando Roadster
98 DR450
07 Sherco 450 called BLING.
07 Sherco 510 called Holy Shit .
shearboy2004 is offline   Reply With Quote
Old 03-12-2011, 03:11 PM   #7631
kobukan
almost gnarly
 
kobukan's Avatar
 
Joined: Dec 2009
Location: Saco ME
Oddometer: 1,694
Quote:
Originally Posted by clab04 View Post
I converted my DR 350 into a street only bike. I have the stock 18" rear wheel and whoever owned it before me put a 15t front and 54 rear sprocket configuration. It turns 3200rpm at 60 mph and I'm only getting 50mpg! I tip the scales at 135 so it doesn't know I'm there. I do mainly highway daly commutes but I live on the Blue Ridge Parkway so there is some carving going on too. So here is the question: what rear sprocket would give me mileage without killing my low end?
3200rpm at 60mph cannot be right, especially with a 54 on the rear. Maybe you meant 6200rpm?

Your converted dirt model is running a pumper carb and, I could be wrong, but I don't think you're going to get the 65-70 mpg some people report on the street version with the CV carb. My '99 is a converted dirt model running a pumper and I get 50 mpg. It has the air box mod, 140 main jet, 37.5 pilot jet, needle on the 4th groove down from top, and it runs great.

Your '92 primary reduction ratio is slightly different than my '99, but I've tried a variety of sprockets and am currently running 15/41, which is actually what the stock SE's came with (41 rear is not uncommon). I'm right around 5700 rpm at 60 mph, 6200 rpm at 65 mph. I was running 15/44 until recently and that ran a few hundred rpm's higher at the same speeds. I'm planning on keeping the 41-tooth rear and swapping the front if I want more low end for trails. I bought 12, 13, and 14-tooth sprockets to try on the front - they're cheap.
__________________
'04 R1150GS, '97 R1100GS, '99 DR350, '02 DR650, '03 DR650
A Few Days Solo to Copper Canyon
A Maine Rider’s Arizona Day Trips
A Few Days Solo in Baja
kobukan is offline   Reply With Quote
Old 03-12-2011, 03:49 PM   #7632
clab04
The Sprout
 
clab04's Avatar
 
Joined: Aug 2010
Location: Deep Gap, NC
Oddometer: 121
Wow. I have a vapor tach. I did set it up for spark on every stroke. Someone told me that Drs fire every rev. Maybe they arent. That would give me 6400rpm if that is the case. Thanks guys. I will go with the shorter rear and maybe look for a cv carb.
__________________
'92 DR 350 Dualsport

Hey hey hey! Don't you think he is dead enough?
Well he shouldn't have been playing on my side of the street!
clab04 is offline   Reply With Quote
Old 03-12-2011, 05:24 PM   #7633
Lasherman
Ah Sh!t!
 
Lasherman's Avatar
 
Joined: Apr 2010
Location: Turlock, Ca
Oddometer: 199
Found it!

Been leak chasing for two week, and replaced all top valve cover and up gaskets.

The leak is actually in the frame where the support brackets off the valve cover bolt to the frame. It looks like the back mount has a hairline crack in the weld, and the oil is traveling down the upper bracket onto the head.

Some JB Weld should fix that crack right up!
Lasherman is offline   Reply With Quote
Old 03-12-2011, 07:04 PM   #7634
kobukan
almost gnarly
 
kobukan's Avatar
 
Joined: Dec 2009
Location: Saco ME
Oddometer: 1,694
Quote:
Originally Posted by clab04 View Post
. . . That would give me 6400rpm if that is the case . . .
6400 rpm would sound about right for the gearing you're running.

Quote:
Originally Posted by clab04 View Post
. . . I will go with the shorter rear and maybe look for a cv carb.
I'm sure someone would be more than happy to trade a cv carb for your pumper. Most people prefer the pumper.
__________________
'04 R1150GS, '97 R1100GS, '99 DR350, '02 DR650, '03 DR650
A Few Days Solo to Copper Canyon
A Maine Rider’s Arizona Day Trips
A Few Days Solo in Baja
kobukan is offline   Reply With Quote
Old 03-12-2011, 08:04 PM   #7635
MiteyF
Beastly Adventurer
 
MiteyF's Avatar
 
Joined: Jul 2010
Location: Michigan... temporarily
Oddometer: 1,878
Quote:
Originally Posted by clab04 View Post
Wow. I have a vapor tach. I did set it up for spark on every stroke. Someone told me that Drs fire every rev. Maybe they arent. That would give me 6400rpm if that is the case. Thanks guys. I will go with the shorter rear and maybe look for a cv carb.
Spark every OTHER stroke. 4 stroke = 2 crank revs per combustion cycle
MiteyF is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 02:20 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014