TRX250R.ORG

FAQ's & Technical Articles => Techincal Section => Cylinder/Head => Topic started by: rsss396 on August 06, 2013, 06:48:49 PM

Title: concept FOS cylinder
Post by: rsss396 on August 06, 2013, 06:48:49 PM

(http://i64.servimg.com/u/f64/15/44/92/90/cylind10.jpg)

(http://i65.servimg.com/u/f65/15/75/62/05/fos_kc12.jpg) (http://trx250r.org/url?sa=i&rct=j&q=%22fos%20cylinder%22&source=images&cd=&cad=rja&docid=pF0DLyJ9_FR4WM&tbnid=LbDdaf4uFXoajM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.scooterinvasion.net%2Fforum%2Fviewtopic.php%3Ft%3D813%26start%3D405%26sid%3De54e85bbb0883d9f5cc10e22bb0d997a&ei=N30BUsLMKIKOyAHa6oCAAQ&bvm=bv.50310824,d.aWc&psig=AFQjCNG71kF_1iBDvtEt-Rd50YvBKdIn0A&ust=1375915695522321)

(http://i65.servimg.com/u/f65/15/75/62/05/fos_kc11.jpg)


(http://www.deraceheldenvanweleer.nl/index.php?action=dlattach;topic=1260.0;attach=34302;image)

(http://www.deraceheldenvanweleer.nl/index.php?action=dlattach;topic=1260.0;attach=34304;image)









(http://users.uoa.gr/~sph0800108/modenas_dinamik_forum/f-o-s%20scavenge/FOS%20cylinder%204.jpg) (http://trx250r.org/url?sa=i&rct=j&q=%22fos%20cylinder%22&source=images&cd=&cad=rja&docid=rskQq7mcHNIaLM&tbnid=xFiGea4aOnvXQM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.mopedarmy.com%2Fforums%2Fread.php%3F1%2C3396275%2C3396846&ei=73sBUoS5GqukyAHgk4BI&psig=AFQjCNHB8hrj0Xe9CtzPM3yMacXPOnmuKg&ust=1375915343259374)

(http://adardaine.free.fr/arzhdata/Novel_design_concept.gif)
(http://users.uoa.gr/~sph0800108/modenas_dinamik_forum/f-o-s%20scavenge/FOS%20cylinder%203.jpg) (http://trx250r.org/url?sa=i&rct=j&q=fos+cylinder&source=images&cd=&cad=rja&docid=rskQq7mcHNIaLM&tbnid=qWGaEpVHZYLCtM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.mopedarmy.com%2Fforums%2Fread.php%3F1%2C3396275%2C3396846&ei=_XwBUvCJJaKEygGz8ICQBg&bvm=bv.50310824,d.aWc&psig=AFQjCNGksDTb-8Dk_RS04Y7jc7wVDmMiBQ&ust=1375915621978759)

(http://www.deraceheldenvanweleer.nl/index.php?PHPSESSID=pfiuch4glnmikpbssbojrcdde6&action=dlattach;topic=1036.0;attach=30395;image)

Title: concept FOS cylinder
Post by: troybilt on August 06, 2013, 07:46:37 PM

what's FOS cylinder?

Title: concept FOS cylinder
Post by: rsss396 on August 06, 2013, 08:42:58 PM

Frits Overmars Scavenging I believe, I know Frits Overmars is who designed it and he is the guy on the right in the picture above. He is another Aprilla engineer\
That cylinder was made on a 3D printer!

Title: concept FOS cylinder
Post by: C-Leigh Racing on August 07, 2013, 08:37:00 PM

Ol Frits, boy hes something aint he.
Just think if these guys knew what we know, where we find out, probably be less 4 strokes in this worlld.
Neil

Title: concept FOS cylinder
Post by: 937ampd on August 07, 2013, 09:09:18 PM

Those 3D printers are crazy!!!!! Oh, you need a new cylinder? Let me pull up the specs and print you one out. Some day in the future we'll be printing everything.

Title: concept FOS cylinder
Post by: rsss396 on August 07, 2013, 11:32:43 PM

we have been very lucky jan and frits have been so public with all there knowledge, they both could have taken so much to the grave with them.

Title: concept FOS cylinder
Post by: rsss396 on August 07, 2013, 11:36:35 PM

3D is definitely the future but we are still in its early stages, if I remember frits was not the happiest with the properties unless I was thinking of another cylinder that done by a different shop. One had excellent luck the other not so great :(

Title: concept FOS cylinder
Post by: 937ampd on August 08, 2013, 12:18:07 AM

Just crazy to think someone printed a cylinder, as a matter of fact it's absolutely 'effin nuts!!!! I'm sure with time it'll only improve but I had no idea, just thought they were making cups and spatulas and such with them. Some awesome threads you come up with!!!

Title: concept FOS cylinder
Post by: Fear250r on August 08, 2013, 11:16:26 PM

Very cool!!

I think I need to move towards 3D printing...this printing on paper shat is a dying industry...

Title: concept FOS cylinder
Post by: Rupp250 on August 09, 2013, 10:12:25 AM

Until people stop using paper for packaging it won't. Just need to redirect your efforts.

<<
I know there are some badass 3D printers out there doing amazing stuff, but why does it look like there is casting marks on those?

Title: concept FOS cylinder
Post by: rsss396 on August 09, 2013, 10:56:47 AM

I see those cast like marks but just like a program for a cnc machine those lines can be accidentally left during modeling, some of the programmers around here can better explain that than me.

Title: concept FOS cylinder
Post by: Rupp250 on August 09, 2013, 12:34:23 PM

What are the small holes around the top above where the sleeve would be. Coolant passages? Does the head fit into it?

Title: concept FOS cylinder
Post by: rsss396 on August 09, 2013, 01:13:11 PM

The head insert drops down in and those are water passages, I added a picture showing water flow, also notice how water cools the inside transfer ducts

Title: concept FOS cylinder
Post by: udontknowme on October 28, 2013, 07:52:41 PM

i believe the frits cylinder is up and running atleats thats how i understood it. he said something about having a bike at some race and it won so i assumed it was his new design. it was predicted to surpass the rsa performance  :encouragement:  wish i knew even a fraction of what that guy knows