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ktm 250 engine

Agreed, in a 125 sized frame and weighing no more than 105 dry. Bring it on.
 
Is that some sort of exhaust cam timing adjuster I am seeing???

IMG_0237.jpg
 
Looking good, but after working on the new generation of 250, (KX250F), and being impressed with the twin cam "retainers" or "caps", I am curious why use a single casting to cap both cams? Dale, any thoughts? Is it a rigidity issue? It seems it would hamper servicability. I wanna see the rest of the bike! Anyone have a pic? BD
 
BD said:
Looking good, but after working on the new generation of 250, (KX250F), and being impressed with the twin cam "retainers" or "caps", I am curious why use a single casting to cap both cams? Dale, any thoughts? Is it a rigidity issue? It seems it would hamper servicability. I wanna see the rest of the bike! Anyone have a pic? BD



IMG_0242.jpg


Based on nothing more than engineering intuition:
Ease of manufacturing
Increased rigidity
Convenient means for which to deliver pressure fed lubrication (ie serves as an oil distribution block)

Best Regards,
Dale
 
Not that Dale needs me to confirm anything, but...

Having one piece, from a manufacturing standpoint, is one less piece. It is also cast, thus reducing the cost more.

This is a neat little engine. The camchain seems to be quite beefy!!
 
Gentlemen,
What you are viewing is basically one quarter of a one liter modern sport-bike engine.

Such was the motivation behind the following project some thirteen years earlier: http://www.motorcycle.com/mo/mcandy/flat-tracker.html


The KLR engine is near idnetical to that of the ZX10.


Sincerely,
Dale

PS
The KLR is alive, well and remains competitive.
 

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