Quarter Mile Times

HellFire

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Joined
Aug 16, 2008
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Since I had the day off I went to the local track for their "test and tune" night.
Its the first time I've ever been to the drag strip with a bike, it's alot more fun than cars. The kids with their drag bikes were a big help and intersting to talk to. Some of their bikes can easily run in the 9's.
The Rocket ran 4 times before I got cold and took off. The times were between 10.9 and 11.4, 114mph up to 123. There were two hopped up Harleys that were running in the 13's, they were pretty shocked that an 800lb cruiser with saddlebags and a windscreen was so quick.
The first run was a bit scary, I wasn't prepared for it to stand straight up on me.
If you haven't done it before I recomend you try it out, it was alot of fun.
 
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I took my small block Boss Hoss to the track a couple of years ago and ran in the low 10's around 125 mph. But all I was able to do was smoke the tire 3/4 of the way and about the last 150 yrds or so it would start hooking up around 90 mph or so. It was a blast.
I done the same as you, I made 4 runs and took it home. I may try it again next spring on the Rocket and see what I can get out of it.
If you are doing wheel stands, Just think what a pro could get out of it by launching it right. Maybe low 10's for sure.
Good job bubba.
 
scot in exile said:
Sounds like a lot of fun, do you have any video?
I mean someone else taping not you while you are riding
Click to expand...
I couldn't get my wife to even go let alone take pictures. I've been trying to get her to snap some while doing wheelies but she absolutely refuses, since we're kind of new to the area and don't know many people, I'm **** out of luck.
It's problably better this way, the one time someone is taking pictures will be the time I smash it up. LOL
 
1/4 Mile times

Thats really good times .The rocket smashes a lot of bikes and people out of the hole.I ran a 11.3.How mildly worked is your r3
 
Yea the short distances were really impressive, too bad my reaction times were awful. Sat at the light for nearly half a second each time, but the 60' times were always 1.5-1.7 seconds. 1/8th mile 6.8-7.1 @ 100mph and 1000' 9.0-9.3. It's after that thousand foot mark that things start to cool off. Someone that knows what they're doing could probably shave off at least half a second maybe more.
I don't have anything done to the engine other than bolt on stuff and software, no internal alterations. However I'm at the limit of what the clutch can handle, if I were to shift with the clutch pulling that hard it would slip something fierce, so I only use that off the line of course. I've got exhaust, triple filters, no secondaries, PCIII, Gi Pro and a good tune, thats about it for performance upgrades.
What have you done to yours?
 
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It's been a long time since I've run at a strip but Hellfire you're correct that coming out of the hole correctly is critical. It will take some practice to find the RPM spot where you come out pulling and don't simply go up in smoke. With the amount of torque these monsters have that may be a fine line. Learning to slip the clutch correctly will keep the front wheel down but doesn't bode well for clutch life. Sometime in the near future, after the winter, I'm going to run her & see what she'll do.
I'd be interested to hear some RPM locations from some of you guys who have done some strip time. Where do you come out at? 3500..4500..where?
 
engine

Stock engine,3into 1 muffler,tuneboy,triple filters,crank case breather,strapped down front.Sorry i took so long to reply.Aussie BOB launches in second gear and uses the torque of the motor .
 
Hellfire,... So, you don't use the clutch after launch? Do you bump the throttle when changing gears or stay on the throttle? I've been wondering about this cuz wanted to go to the track too.
Nev cams, Jardines, big pods, no secondaries, PC3, and anxious to know what she can do.
 
I've gotten away from using the clutch at all. Other than starts, it's just a matter of matching the rpm's when accelerating normal. When really getting after it, burping the throttle close to redline is all it takes to shift. Just don't be timid about it, thats when you grind gears ... A little tension on the shifter while accelerating and then when burping the throttle it slips right in.
I found that if I even try to use the clutch when hitting it that hard, it slips till I release the throttle. The stock clutch just won't handle the modifications and I'm not ready to put up with the B.S. of a lock-up.
A few runs and anyone can do it, trust me, if you think about it too much ... it will grind.

It won't shift while under a load, it's when you let off a little that allows it to slip into the next gear. If you read what an "air shifter" does and just do it yourself, you'll get the gist. It's that little bit of transmission backlash as you "burp" the throttle that allows the gear change.
 
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