Drag strip virgin..... - TwoWheelForum: Motorcycle and Sportbike forums
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post #1 of 38 (permalink) Old 06-12-2007, 09:12 AM Thread Starter
 
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Drag strip virgin.....

Ok, so there's this meet in 2 weeks for my car club at the drag strip. Cars and bikes are welcome. I'd like to take the Frankenblade, but I have never run it in anger before. I hate to admit it, but I am clueless when it comes to drag strip skillz!
  1. What tire pressures should I run in the rear? I assme that the front stays the same as street pressure?
  2. Do I need to strap the front of the bike down?
  3. Alternatively, instead of strapping, can I raise the forks in the triples?
  4. If yes to the latter, by how much?
  5. Do I need to lower the rear of the bike?
  6. Can I get away with not doing this?
  7. When I start, do I keep both my feet out, or put them on the pegs?
  8. Should I start in 1st or 2nd gear?
  9. Do I need to do a burnout before the start (I am running Pilot Powers)
  10. Should I clutchless upshift through the gears, or should I flatshift only while still using the clutch?

I'm currently running a 15T/45T combo, but as it is, I can't put full power down in first because it is just too violent (the front wheel will not stay down), and the front wheel will also lift purely under power in second - even with me leaning forward. Plus I have flatslide carbs too. I am thinking of putting the 16T front sprocket back on - is that a good idea?

What sort of time should I expect with 154 at the rear wheel?

Thanks,
Sime

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post #2 of 38 (permalink) Old 06-12-2007, 10:57 AM
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Ok first time drag racing huh? Well the first thing to do is to forget about all the tire pressures and all that stuff your not john force yet so dont worry about it. Race it as you ride on the street.

Second- pull around the water box so you dont get your rear tire wet. Burn if you need to flex for muscles a bit but having a heated tire isnt really gonna help you that much at this skill level

Third- This is a warning to you. Most tracks spray a glue like compound at the starting line so you will have ALOT of traction you wont be used to. First couple times down take it easy on the launch and work your way up to a level you are comfortable with. If you follow this you will have a fun time instead of being a big shot and looping your bike first time out.

Do you know how to stage?

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post #3 of 38 (permalink) Old 06-12-2007, 12:20 PM
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and keep you weight forward to help keep the front down. Biggest thing is relax n enjoy. Ya not in the NHRA so ya out to have fun
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post #4 of 38 (permalink) Old 06-13-2007, 12:29 AM
 
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sounds like you should have fun
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post #5 of 38 (permalink) Old 06-13-2007, 12:31 PM
 
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if you have the time and whatnot, lowering the bike wont hurt. youd lower it in the triple tree... but dont go buy lowering links for the rear just to drag race it.

I'd say first time out.. SOFTEN your spring in the rear all the way out... its easy and free. That will aide in keeping the front end down.
Use 1st gear, but like he already said, go easy with the track being prepped. Just slip the clutch a time or two until u get the right RPM to get it out without bogging it, then u can just do it through controlled throttle. Just find a desolate road and give it aseveral tries the day before and pay attnetion to your RPMS, though the track prep will change it just a hair. Staging... odds are they will go 1-2-3- with yellow lights then the green. Soon as u see the third yellow hit it.

IF you get a reaction time of like .4-.5 or worse, you left too close to green. you want like a .2-.3 or better. Worst case u red light it. If you get enough runs itll get pretty good.
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post #6 of 38 (permalink) Old 06-13-2007, 12:36 PM
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Well reaction times mean nothing if your just going out to see what ET's your bike can put down. The clock doesn't start till you move. I would work on lowering your 60'ft times first which is all about how well you launch and you can cut some serious time off your ET.

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post #7 of 38 (permalink) Old 06-13-2007, 12:50 PM
 
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true. But it sucks to run a better ET and still get to the end of the track second...and still good to just get good reaction.
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post #8 of 38 (permalink) Old 06-13-2007, 03:53 PM
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Quote:
Originally Posted by ScottSellersUNR View Post
true. But it sucks to run a better ET and still get to the end of the track second...and still good to just get good reaction.
Yeah its always good to win But I'd rather him concentrate on riding his bike right first and the rest will all fall in line

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post #9 of 38 (permalink) Old 06-14-2007, 12:44 AM
 
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good stuff here, i have nothing to add, -but i always like to see a new drag racing post- you're new at it so just have fun
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post #10 of 38 (permalink) Old 06-14-2007, 01:15 AM
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post #11 of 38 (permalink) Old 06-14-2007, 01:49 AM
 
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whether or not you wanted to, but drag racing will teach you how to wheelie.
my first time doing a wheelie was down the strip (gpz900).

-a|ex
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post #12 of 38 (permalink) Old 06-19-2007, 12:12 AM
 
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so what was the outcome? or is it next week?
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post #13 of 38 (permalink) Old 06-19-2007, 01:30 AM
 
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Back Marker-- My first wheelies too...Ex500... Through 2 gears none-the-less.
The only time i ever got that bike up in second.(and a rare first gear wheelie)

Let us know our times when u get a slip
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post #14 of 38 (permalink) Old 06-26-2007, 12:23 PM
 
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what were the times? also did you make any mods? lowering, pressure, etc... hope you laid down some good times
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post #15 of 38 (permalink) Old 06-28-2007, 09:14 PM
 
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Still no results? What gives?
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post #16 of 38 (permalink) Old 06-28-2007, 10:21 PM
 
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Yeah, how did it go????
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post #17 of 38 (permalink) Old 06-28-2007, 10:50 PM
 
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i know, im waitin too- we want results!

i think im going on the 8th of july, ill let you guys know how i do, but hopefully sime chimes in before then....
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post #18 of 38 (permalink) Old 07-01-2007, 07:21 PM Thread Starter
 
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Hey all,

My sincerest apology for being away from the forum for a little while. It's tax time here so I have been busy with that, plus I have been helping my wife with our 9 week old son, and our 2.5 year old daughter who seems to need more attention that our son!

I did go to the strip last weekend, but unfortunately couldn't take the bike. My friend didn't get the trailer he wanted so he only had access to a dirtbike trailer which couldn't fit two sportbikes (he has a z1000 with really wide bars). So, I had to leave my bike at home. In anticipation of going to the strip, I did however change the front sprocket back to the 16T and the bike is much easier to ride now.

I did take the car and did a 12.74 (02 Subaru STi heavily modded 2 litre). I'm upping the engine capacity to 2.4litres and should see 400hp at the wheels. That will make it an 11 second 4 cylinder which will be nice!

Re the bike, I'll go out to Calder which is closer so I can ride there. However, it's getting pretty cold here now (around high 30's early 40's) and with flatslide carbs and no choke, my bike doesn't like to start. So it may have to wait for Spring.

Thanks so much for all your tips and help. I will use them all when I do go to the strip.

Cheers,
Sime

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post #19 of 38 (permalink) Old 07-01-2007, 08:47 PM
 
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no choke? ouch-that sucks

have fun with your kids they're too young to talk back, enjoy that lol
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post #20 of 38 (permalink) Old 07-01-2007, 11:10 PM
 
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Thanks for the response!! Hope you get the bike out there sometime soon.

Quote:
Originally Posted by dnyce View Post
no choke? ouch-that sucks
Nah, just ask Burt Munro. He had the world's fastest Indian and it didn't have a choke. He just put his hand over the air intake to choke it.
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