Messages

1

Photos & Videos / Re: First Ride

« on: September 01, 2010, 09:53:34 AM »

   Way too Cool,
However I must warn you,  If she decides to take the princess route without a bike it only hurts for a little while...
   My Daughter was really psyched to get her bike.    After only about an hour she was done.. .that was it...
Broke my heart. .. But life goes on..
 
I gave the 50 and all the gear to a friend at work with two boys and they rode the wheels off that thing...They now moved up to yz 80's.
  Hopefully you will be able to keep your new riding buddy, but if things don't work out, there's always another kid to pass the torch too.
  Tuck \o/

2

Technical / Re: breaking up on low side.

« on: August 24, 2010, 06:30:08 AM »

Well Allrighty Then!   Good News
  Glad to hear you got the bug out,  I had misunderstood the rider was getting left at the back of the pack. 
Sounds to me like your program is on the fast track     You guys definitely have the HP to Weight advantage..
   Mixing it up with the big guys like that takes guts!   
Take Care and Best of Luck...
   Tuck\o/

3

Technical / Re: breaking up on low side.

« on: August 22, 2010, 10:22:21 AM »

 Thank you Ford,
 I didn't know how to put that statement down without sounding ..condescending...
  If I remember correctly, the pilot of the bike has recently moved up from a smaller machine, and the Team Mechanic has a great reputation on setting up a competitive program.   That being said, Riding a 125 is a blast, however it is work keeping the bike on the pipe.   
 Ford also makes an excellent point on a baseline or stock set up.  Modding a bike to be competitive will usually narrow the power band, albeit making more HP.  I don't necessarily mean to De-Tune the bike, but moving the powerband to the low-mid should help this rider be more competitive.  Moving the power back up to the mid-top after the team has a bit more time with the bike.

  Moving the power down to the low-mid ( kind of like Ford suggests) should be as easy as going back to stock.
The stock parts should also be less expensive!   
  I hope this helps Sapp, Please do not take this in the wrong context,  I have a lot of respect for yourself and team!
     I'm sure the rider has been pretty excited about "moving up" and then seem to get the short end of the stick on race day.  I would encourage him to hang in there!  Rome was not built in a day!  And I'm also pretty sure when you guys started the program there was a learning curve, and so it would only be natural to "start all over".
    You guys get to spend alot of time together when most kids want nothing to do with their parents. 
  Hang in there!  Moving up to the 250's too soon may be even worse on the lad, those guys might find pleasure in hammering a "New Guy" 
     Tuck\o/

4

General Two Stroke Talk / Re: Unadilla update

« on: August 22, 2010, 01:38:47 AM »

What are The Chances... Really..  Talk about Divine Intervention!
 The Team was down and out after the bike had...some "technical" difficulties... 
   and now you have Mr. Boyesen Tuning your Bike!? 
              What a difference a day makes..
   Evidently Mr. Boyesen sees something in the program worth working for.  That's a good dude right there,  I'm gonna buy every thing Boyesen makes for our bikes now..   
     
       I read a story once about this shepard boy Name of David, He took on this really Huge, Fully Armored Warrior Dude with a handfull of stones and a slingshot... 
  It's all about who's got your back Bro!
   KEEP THE FAITH ! 
  Tuck\o/
 

5

Technical / Re: breaking up on low side.

« on: August 20, 2010, 11:20:19 PM »

Sapper,

At part throttle as you're just putting along or coming out of a turn and not on the pipe yet, it breaks up bad.

   If the bike starts easily and Idles well I would have a difficult time believing the reeds are bad, but stranger things have happened.   Coop is right on about the pilot. 
   If the only time the bike stumbles is coming out of a corner it would be awful hard to blame the ignition system. 
    It should only take a few minutes to drop the needle and see if the bike responds any better.
( Once the rider figures out what rich and lean feel like it will make your job much easier.)
  Have you tried anything else since the main and pilot change? 
  Tuck\o/   

6

Technical / Re: Some help on leaning out my YZ250 please?

« on: August 20, 2010, 10:43:02 PM »

  You are right, it does help to have someone else there the first time to help out.  But that's not always gonna be an option.
It may take some diligence reading a service manual, and it may be boring.  One day the light will come on and you'll say what the heck was so hard about that!
   But just like anything else in life you are only gonna get out of it what you put into it.!!

Start Here: http://members.cox.net/bostonbrothersracing/General%20Boston%20Brothers%20Stuff/tuning/2stroke%20tuning.pdf

http://www.amazon.com/Motocross-Off-Road-Performance-Handbook-Motorbooks/dp/0760319758/ref=ntt_at_ep_dpi_1

http://www.amazon.com/Motocross-Off-Road-Motorcycle-Motorbooks-Workshop/dp/0760335966/ref=pd_sim_b_6

http://www.angelfire.com/zine2/boostajetski/carburetor_tuning.html

  Tuck\o/

  Jetting search TSM :  http://twostrokemotocross.com/forum/index.php?action=search2
You Tube Jetting search:  http://www.youtube.com/results?search_query=jetting+a+two+stroke&aq=f

7

Technical / Re: Jd Jetting kit

« on: August 20, 2010, 10:36:55 PM »

    It may take some diligence reading a service manual, and it may be boring.  One day the light will come on and you'll say what the heck was so hard about that!
   But just like anything else in life you are only gonna get out of it what you put into it.!!

Start Here: http://members.cox.net/bostonbrothersracing/General%20Boston%20Brothers%20Stuff/tuning/2stroke%20tuning.pdf

http://www.amazon.com/Motocross-Off-Road-Performance-Handbook-Motorbooks/dp/0760319758/ref=ntt_at_ep_dpi_1

http://www.amazon.com/Motocross-Off-Road-Motorcycle-Motorbooks-Workshop/dp/0760335966/ref=pd_sim_b_6

http://www.angelfire.com/zine2/boostajetski/carburetor_tuning.html

  Tuck\o/

  Jetting search TSM :  http://twostrokemotocross.com/forum/index.php?action=search2

8

General Two Stroke Talk / Re: Unadilla update

« on: August 20, 2010, 10:08:27 PM »

   Hey John,
 No-one got hurt, The bike can be re-built.   Getting your team up on the podium is the best revenge!
 Get the guys to put together the best bike you can and go for it!  Maybe the readership/members here will chip in and help get some spares in the trailer.
  To be honest I can hardly keep my bikes running let alone service them on a racing schedule, the cost has got to be astronomical.
Food lodging tools fuel oil insurance entrance fees machine work suspension work ignition clutches tires tubes (or tubeless) plugs gaskets bars brake rotors  brake shoes cables grips safety gear boots gloves bars consumables am I getting close?  and that's just the race bike,    So I can see how having a back-up race bike might be a bit of a stretch.. let alone a practice bike,spare parts,and all the equipment to run a team.  
   I went on a bit of a rant over on the 250 sight, and I don't usually post much at all.. you get what you pay for  
 I think for a crew of "Working Men"  to have gotten this far is fantastic!
           I know What Burt Munroe would do.     ("The Worlds Fastest Indian")
   Tuck\o/

9

Technical / Re: breaking up on low side.

« on: August 09, 2010, 07:12:09 PM »

 Hey Sapper,
  The bike should be running primarily off the needle at this point, (remember all the circuits do overlap).
Does the bike start well? and how about idle? (if you run it) That will be the pilots job.
 Now Coop makes a good point on the pilot, seeing as this is probably the hottest part of summer you just may leave the pilot alone and adjust to temps & elevation.
  As the weather cools down you will probably need to turn in that A.S. 
Ignition...If the bike runs good on top I would think the electronics would be working hardest on the pipe, but stranger things have happened..

 You might try pulling open the choke after you get moving, and see if any more fuel affects the midrange.
Now it will be tough to keep the bike running while you pull the choke, but you should see a difference as you wind the bike up.  Kind of like the eye doctor, Better? or worse?  Better? lower the clip (that raises the needle, = more fuel)
  Worse?  Raise the clip (lowering the needle = leaner midrange)

If after you have tried everything and can't shake the midrange stutter, there are tons of needles available with up to three tapers.
   Let us know how it went..
  Tuck\o/

10

Technical / Re: What is the clearence from the top of piston to top of cylinder supposed to be??

« on: June 25, 2010, 11:07:43 PM »

Here's a pretty good write up.
http://www.gasgasrider.org/html/measuring_squish.html

 Tuck\o/

11

Technical / Re: Fork oil leak

« on: June 25, 2010, 10:57:02 PM »

  There are lot's of this type of vids you can look at to see if this is something you feel you can tackle yourself.
  Rockymountain atv/mc  fork seal & oil change for cartridge forks pt 1
Change motorcycle fork seals part 1 (of 2) cartridge type

and pt 2   Change motorcycle fork seals part 2 (of 2) cartridge type


Tuck\o/

12

Photos & Videos / Re: My intro.

« on: June 19, 2010, 10:57:03 PM »

 Hey Sapper,
     Glad to see you here!
  Tuck\o/

13

General Two Stroke Talk / Re: New Member from Sweden.

« on: April 20, 2010, 11:34:30 AM »

 Jon,
 Welcome.
 Take advantage of knowledge available here and you will speed up your learning curve by leaps and bounds.   Several of the guys have a great deal of experience and are willing to share it.
 Tuck\o/

14

Vintage Two Strokes / Re: Vintage MX/Dirt Bike Site

« on: April 12, 2010, 11:42:55 PM »

 Thanks Jetz,
 Small world, Got the link By Happenstance!
  Tuck\o/

15

Vintage Two Strokes / Vintage MX/Dirt Bike Site

« on: April 12, 2010, 08:28:45 PM »

 I hope no one gets offended by more than just two strokes. Someone passed this link on to me
  and I thought there may be a few fans of some older iron lurking here ....
 http://www.siegecraftnw.com/VDRlinks.htm
  Tuck\o/