My Medina 155 with Mobster wheels [Archive] - Supermoto Junkie

: My Medina 155 with Mobster wheels

Trick Daddy
04-27-2010, 10:41 AM
Ok, so it's only one pic...and not a very good one...but it's a start.
Bike is a Medina gen. 3 X4 roller, with Z155 engine, V2 head, Molkt 26mm carb.

04-27-2010, 10:06 PM
Looks good! I'm a fan of those wheels what do you think of the z155 with the v2 head?

04-28-2010, 05:01 AM
very beautiful, very white color is suitable, as here 50cc?

Trick Daddy
04-28-2010, 07:04 AM
Thanks. The white is just a temporary thing, as the thin little plastics that come with the bike are not very good (cracked up already). I have some decent graphics coming soon, so I will repost pics after I get them put on.

I love the engine with the V2 head. The gearing is a bit different than I am accustomed to, but I quickly figured out that it is really good overall. To get the same top speed as a YX150 engine, just take off 3 teeth from the rear sprocket. I am running 17/39 gearing and run out of gear just a couple hundred feet sooner than a YX150 running 17/41. The ratios are relatively even, where the YX ratios are varied. Shifting at 10,500 rpm, I have 13 mph difference in 2nd,3rd,4th gear...where the YX is 14,12,13...It doesn't sound like much, but it feels more linear...not close-ratio. Also, the engine pulls very strongly for only being 155cc. I am running the stock carb off an SSR 150TX Motard that I built for another racer in the NorthwoodsGP, and the jetting was spot on perfect. It pulls like a 170 V2 head on a YX150 base.

Trick Daddy
04-28-2010, 07:05 AM
as here 50cc?