ADVrider

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 01-27-2013, 07:18 PM   #16
chavo_dakar_bolivia
Adventurer
 
chavo_dakar_bolivia's Avatar
 
Joined: Dec 2011
Location: Bolivia
Oddometer: 61
Dakar issues and findings

Hello advriders!
Thanks for your comments and insight.
I want to share with all of you what has been done and used in this Dakar.

In Sardegna rally, I dnfed on the last stage, and was using a stock stator with Super B Battery and STOCK headlights.
First i had thought it were the LED lights that were causing the problem, so this theory got discarded.
The second theory of the problems were oil coolers and/or heat. This also got discarded because in Sardegna I had no oil cooler and the stator failed 100m from the start. (cold engine still).
Third theory was the Super B battery. I was using a stock battery in Dakar, and still the stator failed. So this theory is also discarded.

In Dakar, I was using a Trailtech stator with a stock battery.....and it also failed.

So I have in mind experimenting with bolting on rally accesories (tanks,navigation tower, etc etc) on a 2008 CRF450R.
Some say the gearing is too close, but I believe only 1,2,3 gear are closer. 4th and specially 5th, are better on the R model.
The weakness of the X gearing is its 5th gear...it is too tall and the engine doesnt quite pull it.

So with these clarifications, what do you think?

Thanks for the advice.
__________________
DAKAR 2015 Chavo Salvatierra Racing-Bolivia
chavo_dakar_bolivia is offline   Reply With Quote
Old 01-27-2013, 08:11 PM   #17
Luke
GPoET&P
 
Luke's Avatar
 
Joined: Aug 2004
Location: Idiotville, OR
Oddometer: 4,117
So when the stator fails, what happens? Does the bike completely stop running? Do the lights or instruments stop working immediately? Does the battery stop charging?
Luke is online now   Reply With Quote
Old 01-27-2013, 08:18 PM   #18
chavo_dakar_bolivia
Adventurer
 
chavo_dakar_bolivia's Avatar
 
Joined: Dec 2011
Location: Bolivia
Oddometer: 61
Quote:
Originally Posted by Luke View Post
So when the stator fails, what happens? Does the bike completely stop running? Do the lights or instruments stop working immediately? Does the battery stop charging?
It is the exact same thing as if it were running out of fuel......
I was going full on and suddenly it stalls and feels like it ran out of fuel......
__________________
DAKAR 2015 Chavo Salvatierra Racing-Bolivia
chavo_dakar_bolivia is offline   Reply With Quote
Old 01-27-2013, 08:30 PM   #19
Mudguts
when in doubt GAS IT
 
Mudguts's Avatar
 
Joined: Jan 2006
Location: Some were in , lostralia
Oddometer: 2,097
Do you know how many watts your stator produces ?
Do you know how many watts you are using ?
Is you reg/rec working , properly no spikes etc etc

Have you checked for bad / loose ground contact points ,broken wires , this can produce a feed back signal and fry stators
Same with positive bad contact will cause things to over heat .

With two different stator frayed , I,d be looking at reg/rec , and ground contacts
Mudguts is offline   Reply With Quote
Old 01-27-2013, 09:26 PM   #20
Luke
GPoET&P
 
Luke's Avatar
 
Joined: Aug 2004
Location: Idiotville, OR
Oddometer: 4,117
Quote:
Originally Posted by chavo_dakar_bolivia View Post
It is the exact same thing as if it were running out of fuel......
I was going full on and suddenly it stalls and feels like it ran out of fuel......

Ok, so that should have nothing to do with the charging system or battery. The ignition wiring is independent of these.

It could be either the high voltage coil on the stator which powers the ignition, or it could be the timing pickup which tells the ignition when to fire. The timing pickup is usually replaced with the stator so it could be either.


In this picture the pickup is the plastic bit on the lower right with the blue and green wires going to it.




A resistance test should tell you which one is bad. I don't have a manual so can't tell you what the exact values should be. Sometimes when either part fails it will start failing when hot and work again when it cools off, then fail more often until it never works.
Luke is online now   Reply With Quote
Old 01-27-2013, 09:43 PM   #21
Mudguts
when in doubt GAS IT
 
Mudguts's Avatar
 
Joined: Jan 2006
Location: Some were in , lostralia
Oddometer: 2,097
Could even be the spark plug cap if its a resistor type , but it's breaking down under load , so work from the spark plug back ,

Replace plug , plug cap , there cheap and if there ok you'll have spares
Check resistance of hi-tension lead check for damage ( rub marks etc etc)
Check resistance of coil

All the data you need should be easily Googled
Mudguts is offline   Reply With Quote
Old 01-27-2013, 09:50 PM   #22
Mudguts
when in doubt GAS IT
 
Mudguts's Avatar
 
Joined: Jan 2006
Location: Some were in , lostralia
Oddometer: 2,097
Test data for crf 450 2005

Tested Plug on other motor which is oke.

-----------------------------
Tested: peak voltage on the ignition coil should be 100 volts minimum.
My measerement after kick starting = 0 Volts.

Resistance measurement Ohm at 20 degrees celsius should be 0,1 - 0,3 Ohm

-----------------------------

Tested: exiter coil peak voltage should be 50 volts minimum (blue terminal + white

Resistance measurement Ohm at 20 degrees celsius should be 9 - 25 Ohm




-----------------------------

Tested: peak voltage on the ignition pulse generator should be 0,7 volts minimum.


Resistance measurement Ohm at 20 degrees celsius should be 180 - 280 Ohm



-----------------------------


Tested: coil resistance with cap removed should be 4 - 8 K Ohm at 20c
Regards,
Mudguts is offline   Reply With Quote
Old 01-27-2013, 10:35 PM   #23
rmhrc628
Beastly Adventurer
 
rmhrc628's Avatar
 
Joined: Feb 2006
Location: The high country VIC
Oddometer: 2,486
Need to also know did you change the flywheel weight to a trail tech ?

If you have swap back to oem. TT are the first to admit that occasionally their fww really fark up.
rmhrc628 is offline   Reply With Quote
Old 01-27-2013, 11:29 PM   #24
Mike The Swede
Mike, The Swede
 
Mike The Swede's Avatar
 
Joined: Nov 2008
Location: Nora, Sweden
Oddometer: 48
Trailtech Stator fails.

I have been there, done that. Talked to Glen Hoffman at GHR Australia, they had the same experience. They recommended to modified the original stator. I had the same recommendation from my local stator guru, chuck the Trailtech in the bin and modify the original.

I have had 450R for MX and 450X for rally, both -08, at the same time. My mods was the usual, open air box, R-exhaust (fits with minor mods), Stage 2 hotcam, Vortex CDI. Never used the R-head but was temped, R has larger valves on intake. Clocks 158 kmph
Mike The Swede is offline   Reply With Quote
Old 01-27-2013, 11:45 PM   #25
doyle OP
RallyRaidReview-ing
 
doyle's Avatar
 
Joined: Jan 2004
Location: Off Piste
Oddometer: 23,005
http://crfsonly.com/howto/gearing/mo...calculator.php
__________________
RallyRaidReview - @RallyRaidReview
doyle is offline   Reply With Quote
Old 01-28-2013, 04:57 AM   #26
Blur
Screwed and stapled
 
Blur's Avatar
 
Joined: Jun 2010
Oddometer: 4,227
Quote:
Originally Posted by doyle View Post
Nice!
Blur is offline   Reply With Quote
Old 01-28-2013, 04:05 PM   #27
wrk2surf
on the gas or brakes
 
wrk2surf's Avatar
 
Joined: Dec 2007
Location: THE exact center of California/Bass lake/Yosemite
Oddometer: 6,470
Chavo what gearing are you running now?

also here is a link to their wide ratio gears for the 450R


http://www.crfsonly.com/catalog/adva...s=transmission
__________________
Thanks for the 2015 support: BELL HELMETS, SCOTT USA, Kriega USA, SEATCONCEPTS.COM , Galfer USA, Carbon-pro.com, GPR stabilzers, Sidi/Motonation, Masters paint and body, Magura , Motolab , Loctite and Dunlop tires .
wrk2surf is online now   Reply With Quote
Old 01-28-2013, 05:12 PM   #28
chavo_dakar_bolivia
Adventurer
 
chavo_dakar_bolivia's Avatar
 
Joined: Dec 2011
Location: Bolivia
Oddometer: 61
Quote:
Originally Posted by wrk2surf View Post
Chavo what gearing are you running now?

also here is a link to their wide ratio gears for the 450R


http://www.crfsonly.com/catalog/adva...s=transmission
I ran 15/50 for most of the race, and 15/49 for the faster stages.......
__________________
DAKAR 2015 Chavo Salvatierra Racing-Bolivia
chavo_dakar_bolivia is offline   Reply With Quote
Old 01-28-2013, 05:16 PM   #29
chavo_dakar_bolivia
Adventurer
 
chavo_dakar_bolivia's Avatar
 
Joined: Dec 2011
Location: Bolivia
Oddometer: 61
Wicked 2008 crf450r

Tomorrow I will have a 2008 CRF450R in my hands , and see if the rally accesories fit....

- In case the rear tank assembly (replaces the subframe) fits, what would be the next step to have all the electrical installations in a R model?
- I will also order the wide ratio gears from CRFs only...
-

And hopefully, VOILA! a 55 HP Rally bike!
__________________
DAKAR 2015 Chavo Salvatierra Racing-Bolivia
chavo_dakar_bolivia is offline   Reply With Quote
Old 01-28-2013, 08:48 PM   #30
rmhrc628
Beastly Adventurer
 
rmhrc628's Avatar
 
Joined: Feb 2006
Location: The high country VIC
Oddometer: 2,486
The rear subframe is swappable between x and r for 07-08 years

You might want to check thumper talk for the info on the wr gears. If they are the ones that bd made and marketed I'm not sure they'll stand up to Dakar abuse...

You might want to custom make a legs case cover so you can install a bigger stator. Lack of space is issue.
rmhrc628 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 10:00 PM.


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