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 05-09-2012, 08:04 AM   #4156
motomike14
Thumper Crusader
 
motomike14's Avatar
 
Joined: Jan 2010
Location: Florida
Oddometer: 1,596
Quote:
Originally Posted by deejay_xr View Post
Guys,

Is the air screw for the dual carbs supposed to have a little o-ring?
The parts fiche doesn't show one, is this correct?

Thanks
Air screws are always located "behind" (toward the rear) of the float bowl. Fuel screws are always to the front. Air screw should only have a spring and possibly a metal washer. Fuel screws usually have a rubber o-ring of some sort. As mentioned, take a flash light and a small drill bit or something with an edge and look in to see if anything is left in there (in the event you actually have a rubber o-ring that my have disintegrated itself).
__________________
"The bold adventurer succeeds the best. - Ovid

I drink the koolaid too...just not the orange kind.
motomike14 is offline   Reply With Quote
Old 05-09-2012, 08:49 AM   #4157
Full Lock or Death29
n00b
 
Full Lock or Death29's Avatar
 
Joined: May 2012
Location: London
Oddometer: 4
Quote:
Originally Posted by elsalvadorklr View Post
man thats a excellent bike
details on the rear wheel and suspension setup?
obviously you shortened the suspension right? I think you said you limited rear shock travel but how?
cheers
Thanks!

It's the original rear hub (the drum brake seems to work ok for short track) laced to an SM Pro 19" 2.15 rim (similar to an Excel rim).

The rear shock is the original unit but the Eibach spring was swapped for a stiffer and shorter WP spring with a custom spacer (I'll find a decent pic of it). In all the shock was shortened by 35mm. It was also serviced and re-valved so a couple of clicks compression and rebound make much more drastic changes then the original unit. The work to the rear shock was completed by MCT Suspension in the UK, who did a great job on it.

I started off with just a Talon lowering link but I was finding that on the throttle on the exit the soft original unit would compress and unload on small ruts like a pogo, letting go suddenly when it lost grip.. I highsided a few times before I could afford the rear shock modification! Now it's spot on.

Also having it lower helps me muscle the bike around and keeps the centre of gravity nice and low. I'm still learning (only came up from racing in the Novice class last year) but the set up has been a massive improvement for my confidence!
Full Lock or Death29 is offline   Reply With Quote
Old 05-09-2012, 08:59 AM   #4158
deejay_xr
Gnarly Adventurer
 
deejay_xr's Avatar
 
Joined: Mar 2012
Location: Netherlands
Oddometer: 496
Quote:
Originally Posted by motomike14 View Post
Air screw should only have a spring and possibly a metal washer.

Thanks Mike !
__________________
'87 XR600R, 17's and fully black
deejay_xr is offline   Reply With Quote
Old 05-09-2012, 09:38 AM   #4159
elsalvadorklr
Beastly Adventurer
 
Joined: Nov 2008
Location: el salvador
Oddometer: 4,076
Quote:
Originally Posted by Full Lock or Death29 View Post
Thanks!

It's the original rear hub (the drum brake seems to work ok for short track) laced to an SM Pro 19" 2.15 rim (similar to an Excel rim).

The rear shock is the original unit but the Eibach spring was swapped for a stiffer and shorter WP spring with a custom spacer (I'll find a decent pic of it). In all the shock was shortened by 35mm. It was also serviced and re-valved so a couple of clicks compression and rebound make much more drastic changes then the original unit. The work to the rear shock was completed by MCT Suspension in the UK, who did a great job on it.

I started off with just a Talon lowering link but I was finding that on the throttle on the exit the soft original unit would compress and unload on small ruts like a pogo, letting go suddenly when it lost grip.. I highsided a few times before I could afford the rear shock modification! Now it's spot on.

Also having it lower helps me muscle the bike around and keeps the centre of gravity nice and low. I'm still learning (only came up from racing in the Novice class last year) but the set up has been a massive improvement for my confidence!

only when racing cn you give details like that...

awesome thanks again

I got some projects in my mind lately

cheers
elsalvadorklr is offline   Reply With Quote
Old 05-09-2012, 11:03 AM   #4160
deejay_xr
Gnarly Adventurer
 
deejay_xr's Avatar
 
Joined: Mar 2012
Location: Netherlands
Oddometer: 496
Okay, bear with me on this one because it's a bit technical but I really need some expertise, cause I'm stumped !

I'm in the middle of loosening the tiny little screws in the throttle slides of my dual carbs to get to the needle position.
All went well, except for one of the two screws on the primary carb, I stripped the damn thing !!

Now I have an extra set of dual carbs for parts, so I managed to loosen the said screws on the trottle slide for the primary carb on the spare set, so I can switch the primary throttle slides and Bob's your uncle.

BUT...
The slides aren't the same !

Left slide is from my primary carb, right slide is from the spare.
Notice the extra cut-out on my slide, which the spare doesn't have




The cut-out lines up with a channel in my carb that also the spare carb does not have.
Below are the pictures of how it lines up in my original carb.
The cut-out leaves the channel open when the slide is closed, once you give it enough throttle and the slide is raised enough the channel becomes blocked

The channel I'm referring to is the one in the bore of the slide, picture is taken from airbox side


This one is taken from the top, you can sorta see the cut-out leaving the channel free when the slide is all the way down



WHAT THE HELL DOES THIS CHANNEL DO ?!?
Why have a channel that ends in the top of the slide when the slide is down?

I can't figure out where it leads unfortunately...

Some help would be awesome !!


Cheers
__________________
'87 XR600R, 17's and fully black
deejay_xr is offline   Reply With Quote
Old 05-09-2012, 11:06 AM   #4161
mcma111
Beastly Adventurer
 
mcma111's Avatar
 
Joined: Jul 2007
Location: San Francisco,Ca.
Oddometer: 10,576
Down the rabbit hole? Better ask Alice.


Sorry, no help here.
__________________
Steve in SF

BMW's
58 R26
79 R100s
91 R100gs

87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
mcma111 is offline   Reply With Quote
Old 05-09-2012, 11:12 AM   #4162
deejay_xr
Gnarly Adventurer
 
deejay_xr's Avatar
 
Joined: Mar 2012
Location: Netherlands
Oddometer: 496
Quote:
Originally Posted by mcma111 View Post

Sorry, no help here.
That's it, I'm screwed !!

__________________
'87 XR600R, 17's and fully black
deejay_xr is offline   Reply With Quote
Old 05-09-2012, 11:19 AM   #4163
elsalvadorklr
Beastly Adventurer
 
Joined: Nov 2008
Location: el salvador
Oddometer: 4,076
thats what previous owners do when they think that an extra slot will eliminate sticky throttles. that or you have something else going on

it can also be that the slides were damaged there and well the damaged peice was taken out

I have a gouge on my slide but its harmless

it was caused by a sucked throttle flapper

I have a homemade one installed now(i dint make it but its made well)


just put it back together and fire up the bike see what happens if you have a sticky throttle then well help you out

so did you get the needles out?
elsalvadorklr is offline   Reply With Quote
Old 05-09-2012, 11:23 AM   #4164
elsalvadorklr
Beastly Adventurer
 
Joined: Nov 2008
Location: el salvador
Oddometer: 4,076
Quote:
Originally Posted by deejay_xr View Post
That's it, I'm screwed !!


your not....keep going deal with jetting the bike later
elsalvadorklr is offline   Reply With Quote
Old 05-09-2012, 11:36 AM   #4165
deejay_xr
Gnarly Adventurer
 
deejay_xr's Avatar
 
Joined: Mar 2012
Location: Netherlands
Oddometer: 496
Quote:
Originally Posted by elsalvadorklr View Post
thats what previous owners do when they think that an extra slot will eliminate sticky throttles. that or you have something else going on

it can also be that the slides were damaged there and well the damaged peice was taken out

I have a gouge on my slide but its harmless

it was caused by a sucked throttle flapper

I have a homemade one installed now(i dint make it but its made well)


just put it back together and fire up the bike see what happens if you have a sticky throttle then well help you out

so did you get the needles out?
No there's something else going on, I'm dealing with channels and holes that the one set of carbs does have, and the other does not.

No unfortunately I couldn't get one of the needles out since I stripped one of the screws.
It's not complete stripped yet so I'm trying drilling into it from the other side with a tiny drill-bit in my Dremel to try to relieve some of the tension before I try loosening it one last time
__________________
'87 XR600R, 17's and fully black
deejay_xr is offline   Reply With Quote
Old 05-09-2012, 11:38 AM   #4166
deejay_xr
Gnarly Adventurer
 
deejay_xr's Avatar
 
Joined: Mar 2012
Location: Netherlands
Oddometer: 496
Quote:
Originally Posted by elsalvadorklr View Post
your not....keep going deal with jetting the bike later
This is the 'later' part, I've been running it like this ever since I got it and have always left it ever since I first tried and failed because I didn't want to strip them.

I want to finally do it right
__________________
'87 XR600R, 17's and fully black
deejay_xr is offline   Reply With Quote
Old 05-09-2012, 11:44 AM   #4167
mcma111
Beastly Adventurer
 
mcma111's Avatar
 
Joined: Jul 2007
Location: San Francisco,Ca.
Oddometer: 10,576
DO NOT attempt to drill out that screw. If anything you want to remove the screw head to relieve the pressure. Once the head is gone the rest of the thread will spin right out.

If you munch the threads in the slide you now have a nice paperweight
__________________
Steve in SF

BMW's
58 R26
79 R100s
91 R100gs

87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
mcma111 is offline   Reply With Quote
Old 05-09-2012, 11:50 AM   #4168
elsalvadorklr
Beastly Adventurer
 
Joined: Nov 2008
Location: el salvador
Oddometer: 4,076
Quote:
Originally Posted by deejay_xr View Post
This is the 'later' part, I've been running it like this ever since I got it and have always left it ever since I first tried and failed because I didn't want to strip them.

I want to finally do it right
thats to bad man

I thought you said you had trciks you knew to take those guys out

it worked for me and they had no head on them

bummer

patience man

beleive that hole you see and the channel thats been done for a reason it has to do with what Im talking about Im almost positive

in any case good luck

x2 dont drill the slide!

you we worried about putting the slide in a vice with a rag what on earth would make you want to drill it!

steve is here all is well

later

good luck man

patience
elsalvadorklr is offline   Reply With Quote
Old 05-09-2012, 11:51 AM   #4169
mcma111
Beastly Adventurer
 
mcma111's Avatar
 
Joined: Jul 2007
Location: San Francisco,Ca.
Oddometer: 10,576
Patience is over rated.

I want it all NOW
__________________
Steve in SF

BMW's
58 R26
79 R100s
91 R100gs

87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
mcma111 is offline   Reply With Quote
Old 05-09-2012, 11:53 AM   #4170
deejay_xr
Gnarly Adventurer
 
deejay_xr's Avatar
 
Joined: Mar 2012
Location: Netherlands
Oddometer: 496
Fuck yeah !! I love my Dremel !

Check this out



Drilled into the screw, managed to loosen it and got it out.
Hole goes straight into the screw, thread in the slide is 100% undamaged

I love being stubborn, haha
__________________
'87 XR600R, 17's and fully black
deejay_xr 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 11:50 AM.


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