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Thanks for all the cool photos and detailed info.
The Shop
Both sweet rides!
When you say a component has been "slightly modified", can you elaborate on what you did to improve the part to your standard? I have been looking up these parts trying to find out what difference there is. First it was the rear brake disc and now the chain guide.
Excellent work and amazing attention to detail! I appreciate the updated title when you post new pics.
Looking forward to the next update!
Pit Row
If you ever have a chance to look at the brake discs on factory bikes and check them out. They are much thinner than stock. Stainless steel is very dense and therefore heavy. It weighs approximately 20% more than steel so it is low hanging fruit for weight reduction at a reasonable cost.
In regards to the chainguide, I just changed the shape a bit to make it look like a modern one on the new Hondas. The 1996-2004 chainguides are old school looking but I think they actually work better because they are a bit stiffer and keep the mud out better. The later designs are lighter but expose more of the chain, sprocket etc. The pics below show the before and after. There are also two small drain holes in the bottom to allow the mud/water to drain easier from the void between the guide and the block when power washing.
What are the plans for the seat foam? Guts racing, think or stock. I'm gonna reread from the start because I've already forgot what was mentioned in the beginning. To much cool shit going on every time I turn around. Its like watching a factory bike coming together.
On my 450 I used the production 2012 CRF450 KYB fork, Kashima/DLC coatings, CNC lugs, CNC fork caps, changed the oil lock collars, pressure springs, spring perches, low friction seals, etc... just about everything you could do to a stock fork.. and they are better, but just could not get the same feel as the works Showa's on my CR250 which has regular seals and no coatings on the lowers. I compared the internals with the Showa stock ones and while they look identical with the exception of the kashima coating on the works dampening rod, the works dampening units were much smoother which made me feel that is where much of the meaningful difference is besides the valving.
Also, on the rear shock, I heard many people were replacing the rebound on the 2015 shock with the old style on the lower clevis, claiming it worked better. I see that you preferred the 2015 configuration.
Looking forward to seeing the final build! Cool ride!
mike
Love this build- best ever. I love machining stuff instead of bolt ons. Or even better machining the bolt-ons!
Post a reply to: Full Tilt CR250 Build - MXA Two Stroke Hall of Fame