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Old 11-19-2009, 08:43 PM   #1
mcd
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CMRA mini endurance

I have been playing around with the idea of running mini sprints and endurance with CMRA next year. I have an F5 bike, but have been thinking of running F4 as well.

What bike would have the best chance at being competitive in F4? I know the Ninja 250 is legal in that class, and seems to be (from looking at the results page) what most people run. I was also thinking of running an 85cc motard. I don't think I could comfortably run a GP chassis bike in endurance, being 6'1". How about a 150R motard? I know cost would run a little more, but would it be able to hold up to endurance racing? The 85cc's seem pretty bullet proof, not sure about the valvetrain on a 150R though.

Would any of you MotoHouston racers be interested in starting a mini endurance team for next year? I am not sure how my work schedule is going to turn out next year, but I would like to at least make a few endurance rounds. It would be mostly for fun, although I would like to be competitive. I am not worried about winning an overall championship.
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Old 11-19-2009, 09:32 PM   #2
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With the 12 hour at Oakhill on the schedule, the Ninja 250 is going to offer the best, most affordable package. Everything else will not only suffer performance wise, but will require rebuilds throughout the season.
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Old 11-19-2009, 10:54 PM   #3
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How do the little ninjette's handle? I know there are a couple of people on here who race them. Do they require a fair amount of work before being race worthy, or just a set of tires? What about bodywork, do they make race glass for them?

I have been leaning towards a motard, simply because I can use it as a mini play bike as well (150R would be fun at the kart track, and in the dirt!). But I agree, 12hr's on a 150R or even 85cc would be questionable! Although I could always skip the 12hr and run sprints that weekend.
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Old 11-19-2009, 11:06 PM   #4
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You can get an older ex250 for cheap and they are faster than the new ones. The only thing is you have to run crappy tires (Dunflop), and that makes it harder to run as fast of laptimes as the new ones.

It is pretty easy to put the newer forks and wheels on an older like I did so it will handle about as good as the new ones.
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Old 11-20-2009, 07:46 AM   #5
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I've ridden them all, the two-strokes, the four-strokes and the Ninjettes. In the right hands, and with the right tuning, they are all lethal.

There are some tricks to make a CRF150R motor bulletproof. Steve Guynes has been racing them since they came out a few years ago, and he's exploded a few here and there to learn just what to do to make them reliable, and just what the maintenance intervals are. Of course in between a few failures over the course several years, he's had lots of success. This year our team (including Steve-O, of course) won the overall mini endurance championship on a CR150R powered Honda RS125, and didn't have a single engine related failure the entire season (although occasionally we missed optimum tuning). But the bike was far from a set it and forget it kind of deal.

Although not razor sharp in the handing department like the GP framed bikes, the best and most trouble-free platform would be a Ninjettee, like Keith suggested above. Keith, his team, and his bikes are always near the front of the pack.
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Old 11-20-2009, 10:21 PM   #6
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Thanks for the help so far guys.

How does the ninjette stock suspension handle for novice pace? Will it be good enough, or does it need to be reworked. What type of tires are you guys running on them?

I admit that I am still a little partial to a motard, either 2 or 4 stroke. I would be able to use that bike for a lot more other than CMRA (kart track and dirt). If the motard is not going to be competitive against the ninjettes though, I don't want to start off at a disadvantage.

I will probably not be up to speed with most of the F4 racers at first, but I don't want to be getting blown away by the ninjettes.
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Old 11-20-2009, 10:33 PM   #7
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you better have one helluva motard to hang with the F4 250's. even riding F5 these things fly by like you're sitting still
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Old 11-21-2009, 01:00 AM   #8
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Quote:
Originally Posted by mcd View Post
Thanks for the help so far guys.

How does the ninjette stock suspension handle for novice pace? Will it be good enough, or does it need to be reworked. What type of tires are you guys running on them?

I admit that I am still a little partial to a motard, either 2 or 4 stroke. I would be able to use that bike for a lot more other than CMRA (kart track and dirt). If the motard is not going to be competitive against the ninjettes though, I don't want to start off at a disadvantage.

I will probably not be up to speed with most of the F4 racers at first, but I don't want to be getting blown away by the ninjettes.
Most of the teams run the BT003's. Bridgestone pays contingency in the mini classes, including the endurance. The No Homeless team runs Pirelli and they won the Cresson endurance overall, but most opt for the Bridgestones as they are cheaper and pay contingency.
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Old 11-21-2009, 06:53 AM   #9
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Quote:
Originally Posted by mcd View Post
Thanks for the help so far guys.

How does the ninjette stock suspension handle for novice pace? Will it be good enough, or does it need to be reworked. What type of tires are you guys running on them?

I admit that I am still a little partial to a motard, either 2 or 4 stroke. I would be able to use that bike for a lot more other than CMRA (kart track and dirt). If the motard is not going to be competitive against the ninjettes though, I don't want to start off at a disadvantage.

I will probably not be up to speed with most of the F4 racers at first, but I don't want to be getting blown away by the ninjettes.
That Road and Track guy can set the ninJette up for you.
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Old 11-21-2009, 11:05 AM   #10
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The stock suspension is best used as a boat anchor.

You need emulators, springs and damping rod mods for the forks. The mods are nowhere near what Racetech suggests though. They can even be miles apart from fork to fork.
The Works shock is the cheapest and works just fine. Penske is better but more $$$.
The suspension is the most important thing on these bikes.
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Old 11-22-2009, 09:41 AM   #11
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i am always looking on the iaai.com website for a ninja 250 nearby. I really want to pick one up on the cheap for cmra, but the upcoming nuptials is postponing that desire.
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Old 11-23-2009, 09:24 AM   #12
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yea, we(NO HOMELESS) won cresson this year and had tons of fun on our ninja.
they're fantastic bikes.
we run the 08 model with the pirellis.
john can get you set up on either the bridgestones or pirellis. they both work well and he's very familiar with what is working on the kawis.
whether you get and old one or a new one, Road and Track should be able to dial in your suspension. it's key to riding these bikes fast.
they're cheap and fun.
and you can take them way past the edge and bring them back.
the GP bikes may not be so forgiving.
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