mopeds


polini cup round one

I’m home, tired and don’t want to study, so lets talk mopeds some more!

Me and some superteens went out to atwater for some good old fashioned fun, because what could be better than mopeds, racing, hanging out, and super target, all 2 hours away from anywhere you’d actually go if you were a sane being. Of course we got there late, and of course the mopeds were on the track at that percise moment, so I missed practice. I wrongfully assumed it was like last year with 4 practices, but nope, this year it was 3, so I was down to 2. I was a little skeptical of the magnum (derbi?) just because I knew I’d be abusing the za, so I “tuned” it up (set the timing and “jetted” it, meaning it was good to go!), then got out there. The n8p was pretty dismal with my gearing choice (18×36) in that it would downshift on the hairpin and maybe the big wrap-a-round left, but otherwise I’d be in 2nd with no power through the turns. Not good, but once it hit on the straight, it went pretty fast, seat of the pants maybe 60, but probably more like 55 or less cause I couldn’t top it.


Rafter was really cool and let me throw a spare destroyer on there for the next one, and boy, what a pipe! I’d always kind of just dismissed destroyer power as a fad (really I’m just too cheap to lay down the scrilla), but it holds its own. Similar in its hit to the circuit, but later, and if you tempt the za long enough, it’ll pull through the band and shift right back into it. Fun stuff!

As many are likely aware, there were some rad builds this winter (or last couple weeks), and all were quite impressive. Jimmy and Tony worked together to build a pair of identical awesome flat-reeders. Each is stroked out, ported all nutty like, tuned pretty well, lightened here, strengthened there, and a custom pipe finishes it all off. This things are next level, and both definately have the potential to deliver some quick laps.


Tommy built a vogue, but got the massive mikitech cases and clutch pulley, is running the derbi metra, a 28mm flatslide among other insanity. Its fast, and when its fully tuned and ready, it will be head to head, power wise, the full length of the track.

Dean built the VX4, the most unique moped ever. It has a pinto frame, hobbit cases, derbi cylinder, moby crank, moby er3, derbi rear pulley, hobbit front variator and clutch, hobbit rear pulley and wheel, HPI, hydro ebrs, custom subframe, in-frame gas tank, and probably many other things I forgot. Regardless, its got the potential to eat every moped. The 2 pulley sets variate sequentially, the rear after the front, so tuning is a bit tricky. Unfortunately the bike sustained some damage in the 2nd practice, so he was out for sunday.


With so many (should have been more) amazing bikes, the racing was amazing to watch. Jimmy and Tommy are so competitive, and both go all out. The derbi’s would take the straights but tommy would always be there in the turns and made passes then was passed and so on, and some how Pete got up front on Tony’s monster. Rufus was out there on his bravo as well, not quite as fast, but he gets quicker every lap, so he’ll be exciting to watch.


This beast was 62ccs, something like 6 or 8 hp. Nuts!

I managed to win the e50 polini class as I violated every rule in the book. CDI, disk brakes, 24mm carb, za50, all prohibited, all present. I managed to score a sweet 2 foot trophy and some points. Kick ass! Best of all the bike survived. My fastest lap was 47.something, not terrible for the bike (last year I think I got down to 43 on tom’s derbi, this time the fastest in open was around a 42, and last year the fastest fast was about a 40 by jeff) And for those wanting to race, top tanks are worth their weight in gold. So nice to have something to hang onto. For Gabe, I forgot to check my main in the flatslide, but its either a 165, 180 or 205. Sorry buddy!

So I’m pretty excited for later races, and I really hope more people head out. I’ll be honest, its pretty lame no one showed up. Obviously we all have things going on and whatnot, but come on. We have restrictive rules created for a race with 2 people showing up to ride? That’s exactly the point I guess. Even if you aren’t building something crazy to battle the fast dudes, get out there. Track time is a lot of fun. I’m bummed I have to miss the next one, but I am more excited for June.

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busy day
March 19, 2010, 11:08 pm
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So the weather is just about perfect right now. Sunny with highs in the mid-70s, and everything blooming and green. No dead grass or fires yet. Matt and I decided to hit up the archery range for a few hours and hit some targets. We aren’t that good, but whatever, its still fun



The hanging targets are the most fun.

I pretty much got the magnum done. Its not quite tuned yet, but the seat is one, tank secure, HPI on and kind-of timed, and mikuni and intake done.

Everything went pretty well. I just used my derbi intake, but drilled new holes so if came off to the side for the mikuni. I think this was the first time all my holes lined up the first time. Seat brackets took a few, but the freespirit seats are actually really close to mounting up on magnums. I bent the rear bolts out just a tad and built quick brackets for the front. The derbi tank is a tad wider than a magnum tank, so I built up the rubber mounts so it didn’t move around. I know the lines aren’t perfect, but I’d hate to rip up my perfect seat or dent/scrape my ltd tank, so it will have to do. The riding position is actually quite nice. The red bike theme continues

While working Bro and Matt went up the hill, Matt to ride his bike down (drivetrain missing), and Bro to longboard. This hill is awesome when everything works right, but speed wobbles are not good. I lost my brake once coming down and crashed into the bushes. This time Bro’s hand and elbow took the brunt of it.

Putting the HPI together was quick and easy, just the first time I didn’t tighten the nut all the way down so the flywheel came loose on the first test run. I’ve got it set just about 2mm BTDC and it seems pretty powerful. I’m geared 18×36 and it gets up to speed a bit quicker than it did with treats CDI and the phbg. Top speed somewhere close or at 60. With some tuning and shorter gearing it should be pretty good for the track. I really prefer top tanks over step-throughs when it comes to riding as its so nice to have something to hold onto with your legs. So while this thing will be nowhere near a contender, it should be a lot of fun.


Finished the night off with some tri-tip, guacamole and jalapenos. A busy, but very fun day. This kind of day makes me very excited for summer.

Whistler in the morning. I’m bringing the mini-camera so I’ll take so pictures and update (sorry for the crappy pictures, this camera sucks in low light).



this weekend
October 12, 2009, 4:34 am
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was pretty rad. I finished midterms, so i headed home for some cupertino debauchery. We hit up a bar, some people blacked out, someone woke up in a closet, we went bowling, justin was a newb “no my stator isn’t spinning. Oh, its loose”, had a smokey bbq, and all more. I tried to jump a curb on magnumx, but instead planted my balls firmly on the tank. not fun.




magnum x is tiny

new toys. a35 is going to go on the swinger. freespirit will be rad for april.




cuperteens race-prep

so while all the other teams seem to be doing all this crazy stuff, we’ve been keeping it pretty low key. I’m just going to accept derbi how it is. I know I could get a lot more out of it with a little porting, but I want to make sure it survives the weekend before I tear into it further. I also would like to mod the clutch more, but can’t afford another broken shoe, so that will also wait. The cdi and zen pipe paired with the disks already make it a fair amount faster than its last appearance in may (in which it earned the 3rd fastest lap time), so maybe it will be alright.

MagnumX is also going to be coming along and has received its own upgrades. 64cc of piston port magic make for some amazing torque. The pipe we made totally limits its top end, but its loud, and pulls pretty well throughout. I’ll probably ride it in at least one practice just for fun.

My brother is upgrading his tomos as I type, polini, 4 petal, etc. Again, won’t be the fastest bike, but it should rip pretty hard.

Justin (blasto) is riding the polini maxi which has a polini kit on it. I think its slow, and his pipe is going to scrape, but it has some amazing throttle response. Tom (broke dan’s arms) I think is just going to be riding speed racer again, but this time better tuned and a tad faster. He has some other builds in the works, but he’s all hush hush and I don’t know whats happening with them. Matt should just be riding his garelli/derbi monster. HPI, zen pipe, 75cc metrakit and a lomat 4 petal with a 24 mikuni makes a super blaster. My bike has more low end, but his mid-range/top end is insane. True blaster steez. No kinked fuel lines this time.

So thats it, no super hobbit/derbi/puch builds or whatever, although I kinda wish we were. I think Tommy and Jimmy should be ripping, but i know choke is working on some stuff too, so we’ll see. Everyone is upgrading and adapting very quickly. I do have leathers and plan to race as long as I’m healthy. I couldn’t walk yesterday, but spent most the day wrenching today, so I should be fine by friday. Either way, I’m super excited for the weekend. A long lost cuperteen returns!