GT750 Drag Bike

water cooled · Post by **water cooled** » Wed Sep 05, 2012 1:10 pm

Sorry Dave from Anderson. I misread your screen name and thought you were John Davies from the UK. I wondered how John would have known about Muncie...! Anyway, thanks for the post. No-Hatin did a nice job at Indy and I really like that track. Ive never raced at Muncie before but some of the other guys in our group have and like it. Most of the two-stroke guys are from Ohio, Michigan and Indiana so nearly all races for Super Eliminator are in one of those 3 states. Norwalk OH was a favorite but we've not been there since 2008.

Sorry for the mixup! Glad you like the project.

Old School · Post by **Old School** » Wed Sep 05, 2012 3:45 pm

No problem at all, I'm really diggin your project and would like to check it out. Muncie is a decent track, I have been racing something there since 1979. It is only about 40 minutes for me.

As I posted I am new to the forum and actually kinda new to the GT's and enjoy tinkering with them, I've always had a sweet spot for the two strokes. These are a departure for me as I have primarily been a Kawasaski guy for 25 years (still am), I've owned nearly every big bore Kawasaki model made from the mid 70's to the early 90's. I drag raced mid 8 second turbos in the 90's and still own a 1428 turbo Eddie Lawson street bike that makes 250 hp.

I look forward to catching up with you at the track sometime soon.

water cooled · Post by **water cooled** » Thu Sep 06, 2012 8:11 am

Dave, next time we are down at Indy, I will definitely send you a note. Since you are a Kawasaki guy, you will really enjoy all the H2s that make up 95% of Super Eliminator. These are stunning bikes.....as quick as they are good looking!

Old School · Post by **Old School** » Thu Sep 06, 2012 9:29 am

For sure let me know. I like the old H1 and H2's but the cost has gotten crazy for them, I wish I had a couple of my old H1's back again.

I have a question for you. I have a 76 parts bike, what would it take to go after the FF stock record? I take it that it is still setting at mid 14's?

tz375 · Post by **tz375** » Thu Sep 06, 2012 10:21 am

Kevin,

It's cool to see how you and the bike have developed over the short time you have been racing. It's time to get some Suzukis into the record books.

How does that work though - are times/speeds taken during qualifying or eliminations or both? I read somewhere that it requires back to back runs within 1%. That would take real consistency I would think.

So we need to get you down below 10.0 to set an EE/M-HH record if I read the record book correctly.

Some of those boys sure are quick/fast.

Suzukidave · Post by **Suzukidave** » Thu Sep 06, 2012 11:29 am

Here's a cool site on the 2 stroke racing http://www.dragbike.com/dbnews/template ... 1&zoneid=3" onclick="window.open(this.href);return false;

water cooled · Post by **water cooled** » Thu Sep 06, 2012 5:59 pm

Dave from Anderson; all the different classes are based first on displacement. FF, EE and DD. Because Kawasaki is so dominant in Super Eliminator, the displacement cut-offs are all based on H1 and H2 piston sizes. As a result, this is one of the very few advantages that the GT-750 has in Super Eliminator. At 738cc with standard pistons, the GT750 will run in the FF class which cuts-off at 739cc and was setup largely for the H1s.

The current record is 14.5 sec. If I recall, a stock GT-750 can run between 14.3 and 14.1 depending upon which year JKL or MAB. Stock allows for an Aftermarket Street Exhaust and JEMCos can handle the task. Reduce the weight were you can like removing the entire electric starter assembly including the starter clutch and same for the Alternator Assembly. Bike only needs to run for a few minutes and only 14 seconds hard. Reduce the battery from 14A to about 5 amp. Get rid of one of the front rotors.....that type of stuff.

R: The records can be set during Qualification and/or Eliminations. The 1% backup is a minimum figure. You can back up a Record by going faster. I.E. The record for EE-S-HH is 13.9. A 1-OS bore GT750 with JEMCos runs 13.8 during one of your 3 Qualifying passes. Then you run 13.5 during Eliminations. The 13.5 will backup the 13.8 record but not the other way around. So you dont need to be consistent....just faster.

SDave: Thanks for the Avitar. I like it! ....and the Dragbike link....that's us. Its a really great group of guys. A lot of two stroke knowledge and history comes with them. Joe Johnson is one of the most recent additions to S/E. He has been to the last two races. Liked dragging his street GT so much after the first race, he went back to WI and built a full out Drag GT.

There are a lot of open Indexes needing records to be set. http://www.supereliminator.com/Records.htm

Suzukidave · Post by **Suzukidave** » Thu Sep 06, 2012 6:18 pm

Kevin , looking at the Kawasaki drag bikes on that site i see most running a negative droop swingarms , does this help with launch or just give the front more rake .. both ?

Old School · Post by **Old School** » Thu Sep 06, 2012 6:51 pm

Thanks for that. I wish that I had a little more time before the final event, I would give it a try. The old parts bike is 95% complete and will run, and I just ordered a set of Jemco's yesterday.

I only have limited ride time on a my all stock orange 76 GT, but I don't see why this can't be done. A few years back we took a tired Honda cr500 to Muncie and got it to go 12.6, and it ran out of gear at the 8th.

water cooled · Post by **water cooled** » Thu Sep 06, 2012 7:22 pm

Dave, bookmark this site http://www.supereliminator.com/ and keep checking at the beginning of next year on the link marked "SCHEDULE" for next years dates. That gives you this Fall, Winter and Spring to tune that baby up and join us next year. You can get pretty far with those JEMCOs...and we will see you in May or June next year for the first race. We'll put you on the list for next year under Dave Anderson GT750.

water cooled · Post by **water cooled** » Thu Sep 06, 2012 7:37 pm

Suzukidave
Post subject: Re: GT750 Drag Bike
Kevin , looking at the Kawasaki drag bikes on that site i see most running a negative droop swingarms , does this help with launch or just give the front more rake .. both ?

Dave, I think in large part its done to slam the bike down to the ground. Many of these bikes only weigh about 290 to 320 lbs and launch pretty hard...so it helps with the launch by lowering the cg of the bike and rider. Just about every bike there is raked except mine and Smokin' Joe's due to the fact we run in the "modified" class and we have to use stock frames. The Altered class allows more extensive frame changes which is where I think the "raked front end mods" come in. But one of the racers talked to me recently about raking for the Modified class so Im going to investigate further. Im not sure how much is gained (in terms of ET) by raking but first need to see if its allowed for my bike...

Suzukidave · Post by **Suzukidave** » Thu Sep 06, 2012 7:42 pm

I wonder if raking the front by dropping the rear to keep the stock frame would be allowed .. have you ever tested with a lowered rear to test effect ?

water cooled · Post by **water cooled** » Thu Sep 06, 2012 8:12 pm

I've not tried that yet but if Dave Derrick is correct and a "modified" frame can be raked, I wouldnt mind going in that direction if it drops the ET...I just dont have a feel yet for what it might do.

I have some adjustment on my swing arm where the lower strut mounts. Might be worth testing.

Suzukidave · Post by **Suzukidave** » Thu Sep 06, 2012 8:27 pm

With rake must come trail .. proper trail makes a bike more stable at speed .. http://www.google.com/imgres?q=rake+and ... 2,s:0,i:81" onclick="window.open(this.href);return false;

tz375 · Post by **tz375** » Thu Sep 06, 2012 10:38 pm

Kevin, Thanks for that explanation. I am starting to get my head around it. What I still don';t get is who winds when one guy red lights and the other breaks out of his time or both break out or any other combo of infractions.

S/E rules appear to sat "stock engine cradle for M but what constitutes engine cradle as opposed to the complete frame? For Altereds they specifically mention frame raking is allowed, though they do not say that it isn't allowed for modified, so who knows...

For stock class, carbs have to be stock, so no VM round slides or flat slides and stock wheelbase with working suspension. Pipes are OK to change though, so JEMCO would be OK.

Stock bikes well set up were doing anything from 14.1 to 13.7 at 91 to 99 mph depending on who was riding it with a rare 13.3 from one M model. So there's no reason a completely stock GT750 MAB shouldn't break that 14.5 record or even the 14.164@92.4 by Rick Brett. Not that any road test bikes is exactly stock, but it shouldn't need pipes or porting to get one into the books. All it needs is skill/talent/luck and a light rider. Right Kevin?