| Author | Message | ||
     2brdy |
OK Buell fans if you were going to build a drag bike for the track only, what model would you use and why? already riding an S3 on the street and it's time to get back into racing. I'm thinking a streched and lowered S3 but would like to here your opinion's. Thank's Allen | ||
| Firebolt020283 |
i got to agree with u a streched lowered s3/s2 would make a good drag bike | ||
| Racerx1 |
hhhmmm...interesting question. My first pick for a drag bike would be an S1, followed by an M2, followed by an X1. I like the S1 because its fairly light vs an S2/S3, has a very clip on friendly tank, is carbureted so you don't have to worry about poluting an O2 sensor with leaded race gas (and carbs are fairly race track tunuing friendly), has the early square tube swingarm which is easy to extend. The narrow tank is nice because you can run clip ons and just lower the forks in the triples vs have the forks lowered internally. Only downside is the over-the-frame- tube rear exhaust...which can be solved by an M2 or X1 (or custom exhaust). Motor wise, the S2/S3 and X1 have the advantage with the 'B' cams (or the early andrews cammed S1)over a 'D' cam M2, but cams are easy. That said, I run an X1 that has been carbe'd with an S1 tank and a 7" over square tube s1 style swingarm. I also build extended swingarms and struts. $400 exchange ready to bolt on and powdercoated any color you want. S-arms are welded in a jig. Not sure how quick you want to go, but mine is running 10.70's as a street legal 1200 with a completely stock X1 bottom end (including cams) and 100% harley parts elsewhere...be happy to share my recipe with you if interested. Please ignore the cosmetics....haven't had a chance to paint her yet... WFO  | ||
| R1DynaSquid |
nother shot of Wes's bike..pay no attention to the missing seat. I dont recall what times this one was running, but I do know it wasnt anywhere near Wes's times. Or you could just go all out & build a little something like this. | ||
| Firemanjim |
Wes,I am suprised at you.A Buell man like you saying that the S-2's had any sort of cam like an S-3.I am appalled(and some other stuff,too)LOL. | ||
| Racerx1 |
Woops! your right Jim! I'm appalled at myself as well... People think I'm a lot smarter when i don't talk... | ||
| Jeffb |
Wes, Can you give me a hint on gearing? I threw on some sprockets that I had around, but was on the limiter in 4th or bogging shifting to 5th. My 60ft times were improving as I got used to the swing arm. Man what a difference. I didn't get 1.6's but 1.7's with an hard old D205 tire seemed ok. No dyno or tuning time lead to poor ET's, high 11's, but I am still hoping for 10's. Jeff | ||
| Daves |
Come on up to Appleton on the 21st of August. Critter,one of our techs, will have his drag Buell there for the sportbike day and has been racing Buells for a while. I'm sure he'd be glad to give you some advise. Dave | ||
| 2brdy |
OK, i was looking at another buell today and maybe some of you can help me out? how much alike are the M2 frames to the S3 and which front end would be lighter or which fork would you like to use on the track? I'd like to build an 88 inch motor for track use only to start with, plenty of compression, cam, and head work. any opinions on a strong connecting rod assy. i'v read that the S3 fairing will go on an M2? how about the S3 tail section ? with some work? i like that look an also saw i belive an S2 tail converted to a single seat made me start to think somemore. thanks for the advice | ||
| Firemanjim |
S&S bottom end is the way to go for piece of mind. | ||
| Rick_a |
The M2 and S3 frames are identical. I believe the upside-down forks are supposed to be lighter than the conventional jobbers. | ||
| Davefl |
I have a S3 and an M2. The frames are not identical. Close but not the same. The M2 has no provisions for the seat lock and the subframe is not as long. The conventional forks are lighter overall but the inverted has a lower unsprung wieght. | ||
| Firebolt020283 |
just curious are the m2's forks the same as the ones on a sporster? | ||
| Rick_a |
The Sportster forks are 39mm...the biggest Harley forks are a non-adjustable 41mm size. The only similarity I can find between Buell and Harley front ends is that they both use the same steering head bearings. Thanks for the tip Dave...I always thought they were the same. | ||
| Tripp |
if modded street legal buells are running at 10s and 11s in the quarter mile what's a stock buell pulling, let's say an m2 since that's what i own!?! | ||
| Mikej |
I thought someone hit low 12's to high 13's with just air filter and exhaust changes, and a good launch. I think it's buried in the drag racing section of the KV. | ||
| Mikej |
http://www.badweatherbikers.com/cgibin/discus/show.cgi?tpc=3842&post=43845#POST4 3845
| ||
| Rick_a |
The cycle mags have most of 'em (tube frame Buells) in the low to high 12's. | ||
| Racerx1 |
jeffb, Sweet! glad to hear the swingarm is helping out! I'm running a 22/45 sprocket combanation with a 520 chain. It runs very consistent 10.90's if i just leave it in 4th gear and run through the traps at 7000. it will do inconsistent (very weather dependent) 10.70-80's if i just bump it into 5th gear @ 6800 in 4th. I've considered gearing lower, but I'm already a little wheelie limited in 1st gear, And i just bracket race, so i figure one can be more consistent only shifting 3 times vs 4. To use all of 5th gear, I think i would need something like a 21/45 combo or maybe a 22/47. High 11's are great....took me a while to get used to the swingarm. My only other recomendation is to run an upside down shift pattern (easy to do with the 2001 style x1 shifter). Just keep pounding down when you get close to redline. Easier to shift if the bike is out of shape as well. I've seen stock X1's with race kits go 12.5-12.6. Good luck! hopefully we will catch you out at da' grove one of these nights... | ||
| Naughtynurse |
Racer, Gonna be out at the grove tonight???? Maybe looking for something to do with Griz and Hellion??? Lots of cool bikes out there and fun to watch even chick go run the strip | ||
| Tripp |
thanks for the stock bike times and link to KV. although swifty's story was a little incredible it sounds as if most stock tubers are under 13 anyway! | ||
| Wyckedflesh |
In the case of an XB12, would it be advisable to swap the primary gearing for that from a XB9 to get quicker acceleration? | ||
| Racerx1 |
Naughty, Would love to but I'm out of state until next week...definately come out! On the Harley Wednesdays, they actually let first timer's run for free in the novice class! Can't beat that! Wycked, Changing to an XB9 primary would be an easy way to get lower gearing on an XB12 if you wanted to maintain the belt drive. I still run the 1200 ratio in my drag bike, but converted my tube frame S1 road racer to the xb9 primary. You have to clearance cut the primary cover where the clutch inspection cover bolt bosses get a little too close to the clutch, and you have to shorten the threaded clutch adjuster, but other than that, you can run it on tubers no problem. Its a bolt on for the XB12 of course. My only complaint is the XB compensated clutch is a little grabbier than the non-compensated XL clutch. You could run an 883XL primary for drag racing instead if it was a big issue. | ||
| 2brdy |
anybody going to the all Harley summer festival august 22 at Englishtown NJ. | ||
| Wyckedflesh |
Thanks Wes, it was something I was pondering for the occasional trackday/drag day then swap it back for regular riding. |
