2nd 100cc APS build

[bones]

Hey Sofa
  Have a look on the DLRA build diaries---    universal chassis,.
There is a couple of threads with my bikes. The green faired bike is the 80
   Bones

[sofadriver]

that's awesome, bones!
i just glanced thru it and will study it closely tonight.
the 80cc bike is a different approach than mine but we are thinking alike for sure.

[Stan Back]

A line on the ground will disappear faster than "flags" above it due to the "curvature of the earth".

[bones]

Hey Sofa
  When I have a red hat with the Busa engined bike( hope it doesn't take too long--- only 9mphshort) I will do a
chassis for mt tz250A-reverse cylinder and do some good bodywork.
I think an Earls fork like the Buddfab liner would be good--- maybe 50mm higher than the tire.

I think the Busa would go 220+ with proper bodywork and it needs to be VERY accurate.Where a 250 will not need to be as accurate and I'm
not sure I need to go that fast

At Bonneville a couple of years ago my mate added 10mm to one side of the fairing and it changed the bike from scary at 190 to 230 on the
next run.


My son rides the 80/125 but doesn't ride very often and hasn't learnt to  'ride like you stole it' yet-- so the engine lasts a while.

Will you upgrade to the RS engine later?

    cheers   Bones

[bones]

Hey Sofa
Yep-- rs125   '92
I ran 125 at Gairdner on the stock road race bike--  I'm 6'1 so look a little oversize on it

   cheers   Bones

[sofadriver]

At Bonneville a couple of years ago my mate added 10mm to one side of the fairing and it changed the bike from scary at 190 to 230 on the
next run.


Will you upgrade to the RS engine later?

    cheers   Bones

explain a little more about that fairing mod, would you?

I never had the RS motor. I don't think it would fit in the new frame anyhow.

[Frenchinjection]

Why such a steep angle on the forks.  Ours are 45 deg.  You don't need much travel so that gets the headstock lower.

[sofadriver]

Why such a steep angle on the forks.  Ours are 45 deg.  You don't need much travel so that gets the headstock lower.

My view is between the tire and the lower fork tree. Too much caster would make the opening too small.

[bones]

The body was not symetrical and wouldn't steer straight.-- working like a wing.
He added to one side and improved it to be more of a symetrical shape
I think the faster you go the more important it is
   Bones

[sofadriver]

The body was not symetrical and wouldn't steer straight.-- working like a wing.
He added to one side and improved it to be more of a symetrical shape
I think the faster you go the more important it is
 

I'll sure keep that in mind.

[bones]

Hey Sofa
   
    Looks like the inlet is in the  cylinder.
    If it is you should be able to turn the cylinder around and have the exhaust facing back.
   
    Much easier to make a pipe and a better package overall

    I did this on the 80 and the pipe is nearly straight.
 
   Check the photos

       Bones

[sofadriver]

One step ahead of you!     After seeing your pics I decided to check it out.  All 3 of my motors are out of my hands so I cant really tell (one at the frame guy's for fitting into the frame and to fit a CR125 reed cage on the KX100 cyl. and the other 2 are at the engine guy's awaiting that cylinder).  By looking at the base gaskets I'm a little doubtful.  The intake feeds both the top of the piston and the crankcase via a large port so turning the cylinder might not be easy.  Sure would solve a lot of fitment problems, though.   A 90 degree turn to the right would be perfect.  That would put the carb and the pipe outside the frame but still inside the body. 180 degrees would work, too.  We'll see.

[Koncretekid]

A line on the ground will disappear faster than "flags" above it due to the "curvature of the earth".

Hey, Sofa, I don't want to hijack your thread, but I assume Stan Back's comment was in reference to my wishing we had a center line painted on the salt. I just wanted to let Stan know that at Loring, Maine, there is the remnant of an old white center line painted on the asphalt runway.  It is exactly what I use to maintain my position on the track relative to the side markers and it does not disappear due to the curvature of the earth (maybe the earth at Loring is flat!). I've never had the pleasure of such a line as they used to paint on the salt, maybe due to the cost of doing so, so I can't comment on that.  What I can verify is that the little red flags we had last year at BMST definitely disappear when one has his head down low and is just past one set looking for the next.  I've never had the pleasure of driving a roadster on the salt, either.
Tom

[sofadriver]

Well, it seems turning the cylinder just isn't going to work. The ports won't line up and there's no way to change them. Would have been cool, though.

Got the foot pegs fabbed up and (mostly) tacked. You know - gotta find that perfect position. Should finish it up this weekend.

Bad camera angles in these pics but you get the idea.

[sofadriver]

Small world! I know Mike from racing at Pacific Raceways. Tell him Dan Dahl says hi! I was the guy racing a blue sportster. I almost got one of his frames for my motor, but then life got in the way and I stopped drag racing. You are right, he is amazing at his fabrication skills! You are in good hands with him.

Mike sends a big Hello!