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 01-09-2011, 05:45 PM   #6676
slartidbartfast
Love those blue pipes
 
slartidbartfast's Avatar
 
Joined: Dec 2003
Location: Southern Louisiana or Southern England or ...
Oddometer: 4,853
Quote:
Originally Posted by shearboy2004 View Post
Doc you will have to let me know how the larger carb works out for you, mine is a 450cc and I have wondered about a bigger carb , right now it seems to run out pretty good but right at full throttle there seems to be a bit of a hiccup that jetting won't get rid of .
I am at 5000ft and ride to 10,000 so my demands aren't as great nonetheless I would like to hear how it works out for you.
Mine is 435cc but with stock valves/cam AFAIK. It too seems to run out of steam a ways before the red-line at WOT. When I had the CV carb on there, patient fiddling with main jet sizes seemed to be the answer. I have not had time to do the same thing with the pumper yet. Jesse tells me that's typical of the big bore engines however.
__________________
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 01-09-2011, 05:46 PM   #6677
yondering
Beastly Adventurer
 
yondering's Avatar
 
Joined: Apr 2009
Location: NW Wa. state
Oddometer: 1,100
Quote:
Originally Posted by Country Doc View Post
No idea on the weight. Mine feels like it's around 315lbs by the seat of the pants. (i.e. it feels about 30-40 lbs heavier than my 450EXC).

Cruising speed depends on gearing. Stock is 15-41, cruises comfortably at 65mph - more than that and it starts to feel pretty revved out and stressed.
You're pretty much dead on with the weight, for a ready to ride S model. Add a big gas tank and tools, you can see 330 lbs pretty easy.

FYI on the gearing; internal final drive ratios in the transmissions were different on the earlier models. My '91 just loafs along at 65mph with 14/42 gearing, and doesn't start to feel buzzy with 13/42 until about 70. The 13/42 gearing is very close to 10mph per 1,000 rpm in 6th gear. Later years are geared lower, but I don't know when it changed. Same time as the E-start maybe?

Quote:
Originally Posted by shearboy2004 View Post
These are dry weights

KTM 450 EXC 251 LB'S

DR350 249 LB'S

It has gotta be wrong but turns up everywhere ????
You're right, that is wrong, even for dry weight. Suzuki's "estimated dry weight" must not include tires and body panels, or something; it's way off.
Actual weight of a DR350 is much higher; approx. 290 lb (wet) for the dirt model, 310-ish for an S model. There's a huge difference in weight between the KTM RFS bikes (like that 450EXC) and the DR350. I have a DR and a KTM in the garage right now; the KTM feels at least 50 lbs lighter, no joke. That was my biggest reason for buying the KTM.

yondering screwed with this post 01-15-2011 at 11:25 AM Reason: corrected the rear sprocket numbers
yondering is offline   Reply With Quote
Old 01-09-2011, 06:32 PM   #6678
cwc
Studly Adventurer
 
Joined: Jan 2005
Location: anywhere
Oddometer: 903
Acerbis Tank Mounts

Quote:
Originally Posted by uwjberg View Post
So I just picked up a 1990 DR250. It came with an Acerbis tank that I am trying to install. In reading and searching through the thread, it look slike I'm missing the mounts that install on the engine mount to the frame. It also looks like locating replacement items is very tough. Anyone know where I can get replacement items, or can post pics/dimensions so I can make some?

Also, I see that both the right and left side petcock is actually below the carb inlet. Will this cause any problems - ie, fuel not being fed to the carb properly?
Here is what they look like on my DR350. There is an additional bracket that retains the rear of the tank to the original Suzuki bracket.







You might try www.justgastanks.com

They still sell that tank and might be able to supply parts.

As far as getting the gas out, there will be a little that won't get out, but it's much better than the IMS which has only one petcock and that isn't even at the lowest point on the tank.
__________________
Charlie

DR350 It'll get you there

My Ride Reports Here
cwc is offline   Reply With Quote
Old 01-09-2011, 06:35 PM   #6679
Drif10
Accredited Jackass
 
Drif10's Avatar
 
Joined: Jun 2003
Location: Gates of Moscow
Oddometer: 46,027
Quote:
Originally Posted by yondering View Post
FYI on the gearing; internal final drive ratios in the transmissions were different on the earlier models. My '91 just loafs along at 65mph with 14/41 gearing, and doesn't start to feel buzzy with 13/41 until about 70. The 13/41 gearing is very close to 10mph per 1,000 rpm in 6th gear. Later years are geared lower, but I don't know when it changed. Same time as the E-start maybe?
I've got a 91 kicker. And a 99 e-start parts bike. The clutch basket isn't exchangeable between the two because the primary drive gears are different. I don't know the ratio difference, but they are different.
__________________
I guess your get up and go needs a coffee. - Drif5
Drif10 is offline   Reply With Quote
Old 01-09-2011, 07:29 PM   #6680
Country Doc
Wanderer
 
Joined: Dec 2006
Location: somwhere north of Kingston, Ontario
Oddometer: 2,677
Quote:
Originally Posted by yondering View Post
FYI on the gearing; internal final drive ratios in the transmissions were different on the earlier models. My '91 just loafs along at 65mph with 14/41 gearing, and doesn't start to feel buzzy with 13/41 until about 70. The 13/41 gearing is very close to 10mph per 1,000 rpm in 6th gear. Later years are geared lower, but I don't know when it changed. Same time as the E-start maybe?
My internal final drive ratio must be lower than yours. There is no way I could comfortably ride at 65mph with 14/41 gearing. In fact I wouldn't even say that it loafs at 15/41. At 16/41 where I am now, it loafs at 65mph, no buzz, and doesn't start to feel stressed or buzzy until north of 75-80mph.

My bike is a '94, first year e-start, so it must have lower internal gearing than your '91.

dc
Country Doc is offline   Reply With Quote
Old 01-09-2011, 07:52 PM   #6681
shearboy2004
KIWIINUSA
 
shearboy2004's Avatar
 
Joined: Jun 2007
Location: Ft Collins ,Colorado
Oddometer: 4,387
Quote:
Originally Posted by slartidbartfast View Post
Mine is 435cc but with stock valves/cam AFAIK. It too seems to run out of steam a ways before the red-line at WOT. When I had the CV carb on there, patient fiddling with main jet sizes seemed to be the answer. I have not had time to do the same thing with the pumper yet. Jesse tells me that's typical of the big bore engines however.
I have my jetting as good as it will get , I seldom ride wide open so the wee hiccup doesn't really bother me , I'm just wondering if the bigger carb will make a difference or if in order to get everything out of it would we need to get into a little head work on the ports etc.

Not that I'm going to do it because 90 percent of my riding is nasty single track where low end is what's needed.
__________________
88 R100GS
75 Norton Commando Roadster
98 DR450
07 Sherco 510 called Holy Shit .450 Sherco called Bling .
13 Sherco 300i called The Bee's Knees .
shearboy2004 is online now   Reply With Quote
Old 01-09-2011, 08:00 PM   #6682
Bob Onit
Rocket Surgeon
 
Bob Onit's Avatar
 
Joined: Jul 2008
Location: Population 174
Oddometer: 1,519
Quote:
Originally Posted by Country Doc View Post
My internal final drive ratio must be lower than yours. There is no way I could comfortably ride at 65mph with 14/41 gearing. In fact I wouldn't even say that it loafs at 15/41. At 16/41 where I am now, it loafs at 65mph, no buzz, and doesn't start to feel stressed or buzzy until north of 75-80mph.

My bike is a '94, first year e-start, so it must have lower internal gearing than your '91.

dc
I found this info in my DR folder, not sure where I got it from.

" DR 350's went from 2.818 primary ratio to 3.200 after '1993"
Bob Onit is offline   Reply With Quote
Old 01-09-2011, 08:42 PM   #6683
Country Doc
Wanderer
 
Joined: Dec 2006
Location: somwhere north of Kingston, Ontario
Oddometer: 2,677
Quote:
Originally Posted by shearboy2004 View Post
I have my jetting as good as it will get , I seldom ride wide open so the wee hiccup doesn't really bother me , I'm just wondering if the bigger carb will make a difference or if in order to get everything out of it would we need to get into a little head work on the ports etc.

Not that I'm going to do it because 90 percent of my riding is nasty single track where low end is what's needed.

I will definitely let you know how the carb works out. The intake port will be enlarged to 37mm to match the carbs. I already have a cam and oversize valves, so my top-end is a little different than stock.

dc
Country Doc is offline   Reply With Quote
Old 01-09-2011, 08:44 PM   #6684
Country Doc
Wanderer
 
Joined: Dec 2006
Location: somwhere north of Kingston, Ontario
Oddometer: 2,677
Quote:
Originally Posted by Bob Onit View Post
I found this info in my DR folder, not sure where I got it from.

" DR 350's went from 2.818 primary ratio to 3.200 after '1993"
I wonder why they did that?

I don't get to feel bad-ass with a huge fancy sprocket on the back. Instead, I have to run this tiny little steel 41t. Sigh.

dc
Country Doc is offline   Reply With Quote
Old 01-10-2011, 04:40 AM   #6685
ztaj
jatz
 
ztaj's Avatar
 
Joined: Jul 2008
Location: Nelson-ish New Zealand
Oddometer: 916
I have a quick question for the group..... Is the alternator output enough to run a gps ?
ztaj is online now   Reply With Quote
Old 01-10-2011, 05:52 AM   #6686
cwc
Studly Adventurer
 
Joined: Jan 2005
Location: anywhere
Oddometer: 903
Alternator output

Quote:
Originally Posted by ztaj View Post
I have a quick question for the group..... Is the alternator output enough to run a gps ?
I run a 35 watt electric vest on my 1995 DR350SE with no problems.

I don't know how it would work out in slow riding, I almost never have the vest on unless I'm on a highway.
__________________
Charlie

DR350 It'll get you there

My Ride Reports Here
cwc is offline   Reply With Quote
Old 01-10-2011, 06:31 AM   #6687
uwjberg
snoogins
 
Joined: Jul 2006
Location: Kirkland, WA
Oddometer: 105
Quote:
Here is what they look like on my DR350. There is an additional bracket that retains the rear of the tank to the original Suzuki bracket.
Thanks - that's exactly what I needed. I'll try justgastanks and see what I can find out.
uwjberg is offline   Reply With Quote
Old 01-10-2011, 07:06 AM   #6688
slartidbartfast
Love those blue pipes
 
slartidbartfast's Avatar
 
Joined: Dec 2003
Location: Southern Louisiana or Southern England or ...
Oddometer: 4,853
Quote:
Originally Posted by ztaj View Post
I have a quick question for the group..... Is the alternator output enough to run a gps ?
GPS takes next to no power (less than the difference between low and high beam for example). I run a full electric jacket with no problems (I do turn it off if sitting at a light for a while)
__________________
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 01-10-2011, 08:13 AM   #6689
BikePilot
Beastly Adventurer
 
BikePilot's Avatar
 
Joined: Jul 2005
Location: Tampa
Oddometer: 11,243
I've run the Zumo, heated vest and heated grips with no problems. Anything made with a DC electrical system will run a gps just fine. IIRC even the big zumo takes <0.5 amps.
__________________
'09 Buell XB12XT, TL1000S, H1F, M620, CR250R, KX100, XR650R, Cota 315R

Summer 2009 Ride Report http://advrider.com/forums/showthrea...1509c&t=507038
Summer 2008 RR. http://www.advrider.com/forums/showthread.php?t=367703
BikePilot is offline   Reply With Quote
Old 01-10-2011, 09:58 AM   #6690
ztaj
jatz
 
ztaj's Avatar
 
Joined: Jul 2008
Location: Nelson-ish New Zealand
Oddometer: 916
Thanks for info guys...... now I have to find some wires to tap into as there is no battery.
ztaj is online now   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 10:27 PM.


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