My new Pro ET bike.

[stetracer]

I wonder if you could find a trucker's scale (maybe a DPS scale?) and see if they'd let you weigh it. Nice looking bike!

I weighed it at the track I am sure that it is right. It's my lead sled.

[stetracer]

image.jpgWe'll the Man Cup race was an expensive weekend testing session and a lot of fun. This bike is one of the easiest bikes to ride I have ever raced. It goes straight as can be. I did not win much only two rounds on Saturday. I kept breaking out. I could not resist working on it trying to make it quicker. On Friday and Saturday we had a 10 to 20mph head wind but my first pass off the trailer Friday was a 9.30@139.75mph with 1.31 sixty footer. Second pass 9.29 and third pass was back to a 9.30. Saturday we get one time run weather was just like Friday and I went a 9.30@139.89 so I dial a 9.29 first round the wind starts gusting and getting stronger straight down the track head wind. I got lucky and the other guy red lights so I ran it out and only went a 9.44@137.60 so I Changed my dial in to a 9.39 second round the wind started calming down I killed the light and gave him 3 good baps and figured that was plenty and the bike went a 9.27@138.20 but he broke out worse. Third round was a good race I change my dial in again and went back to the 9.29 and it was another double breakout. I ran a 9.27@139.40 oh! So close to that 140mph. All I can say is being at a race where all the manufactures and parts for sale and some time to kill is not a good place for my wallet to be. I had some trouble with my carbs 40mm Lectrons did not idle or start well so I went to see Paul Gast to pick his brain a little. I got more than I could have asked for he had me bring my bike over to his trailer and he set them for me and explained everything he was doing and why a little does so much with these carbs. After I left his camp I wandering around and found a 54t rear since the carbs were running smoother and even quicker revving now. Sprocket installed,slight timing change, and a 11,000rpm shift chip and I am ready for Sunday no time runs for Sunday straight into racing I should have used first round as a test run to see what the bike would run with the three changes I made. Anyway first round Sunday I dialed the 9.27 which is the quickest I had been so far. I chopped the throttle just before the finish line it was a double breakout again I ran a 9.25@139.80 the sixty footer went down to a nice 1.293. Second round is buy back round I change my dial in to a 9.25 we had to wait for an oil down clean up and the weather changed big time the wind died off completely it became cool and dry almost perfect weather. I cut a really nice light. It left hard 1.291 sixty and I got into fifth gear and did not see him next to me bapped him twice he still not next to me chopped the throttle about 75' before the finish line and still broke out with a 9.24@138.55 I know I chopped at least 4mph off that pass. So no I am not sure what she is gonna settle down to but I find out soon. Next I am gonna put another gram on the slider arms and bump the launch limiter up to 5,500rpm. Maybe I can get into the 9.0,s I know the last pass it made would have been in the 9 teens had I not bapped him twice and I staid into it. I know it not going into the 8,s for Super Comp the way this motor build is but I do have 2 other options finish installing the No2 or install a head with bigger valves. I am leaning towards the bigger valve head for a bracket bike plus it an easy swap.




Z

[60ratrod]

and with the head swap, you won't have to worry as much with blowing the motor as you would with NOS

[rapidray]

JD, I think you are pretty optimistic to say under 350. I am curious what it will actually weigh though.
Ray.

HAHAHAHAHAHAHA!!!! I told you so!!! LOL!! Glad you got out & had some fun JD!
Ray.

[stetracer]

HAHAHAHAHAHAHA!!!! I told you so!!! LOL!! Glad you got out & had some fun JD!
Ray.

I am very optimistic but I surely thought it would be a lot lighter. If it was 60 lbs lighter I might be able to get 8.70's out of this little motor. We'll I guess it's time for more Head. LOL

[stetracer]

and with the head swap, you won't have to worry as much with blowing the motor as you would with NOS

Actually I would not be afraid of No2 blowing up the motor. I have always said Nitrous does not blow up motors the guy tuning the nitrous blows up the motor.

[stetracer]

image.jpgI figured I would post up some updates. Been to a couple outings now. the bike is working great deadly consistent 5.90 I put an MSD adjustable rpm module on it set to 10,200rpm to slow it down to 5.90. I just sux. I had trouble with my trees going from .006 to .060 got me a practice tree and got lots of practice put me into nice consistent .010. Then at the last race in Orlando i did not trust my bike to not break out and gave it one little bap 5.92 to the trailer I go I got down to the last 9 bikes out of about 80

[posplayr]

I used the same method and got within 5 lbs of the weight that Cycleworld measured for the same bike. Considering I ditched about 5 lbs of stuff from the bike I have no reason to believe the bathroom scale method does not work.

If you have two scales and the two tires are on it and bike is balanced not on a kick stand it will be as accurate as the scales.
on other hand sounds like OP lifted each wheel to put it on a scale while leaving the other wheel on the ground. That obviously shifts weight to the tire on the ground underestimating the weight. If you get a two by four or something the same height as the scale it will be close but requires a level surface.

[trippivot]

good update - glad that your race bike is operating as it should, that is a good feeling. which brand practice tree did you get?

[kingofvenus]

I used to have a biondo tree, didn't help me any....

[stetracer]

I used to have a biondo tree, didn't help me any....

I just installed yesterday a Biondo Little Wizard crossover delay box with a practice tree built in it. Which i really like. I did not have a crossover box before and it sucked doing the math in the staging lanes when you run a slower bike. A practice tree is more for getting your trees more consistent when leaving off the button. Then you adjust you delay box to cut the .01's and .00's. These guys I am racing with keep you on your toes I lost with a .011 light and ran a 5.92 on a 5.90 dial in. I gave it on little bap and ran .02 off. My fault

Trip
I bought a cheep $50 Proform Perfect/Launch practice tree off eBay. It is not that bad. It feels cheep but it works. And it helped me with getting my trees more consistent.

[Jethro]

[ATTACH=CONFIG]45881[/ATTACH]I figured I would post up some updates. Been to a couple outings now. the bike is working great deadly consistent 5.90 I put an MSD adjustable rpm module on it set to 10,200rpm to slow it down to 5.90. I just sux. I had trouble with my trees going from .006 to .060 got me a practice tree and got lots of practice put me into nice consistent .010. Then at the last race in Orlando i did not trust my bike to not break out and gave it one little bap 5.92 to the trailer I go I got down to the last 9 bikes out of about 80

Damn. That's fast!!

[stetracer]

Damn. That's fast!!

Thats 1/8th mile time.

[trippivot]

surprised myself with a 5.819 last weekend - yeah had a 5.82 on as dial when I did - best it did before was 5.824 for weeks. I really got out of the beams that pass. (and increased the rear tire pressure 0.2 psi)

[Doug]

Nice looking drag bike.

When I look at the front wheel and see six spokes, I would be very tempted to cut out three of them and balance the wheel and tire. I would also look for a smaller diameter and thinner front disc and caliper to take out some more weight.

Drag strips are similar to runways as there aren't any pot holes or curbs to scrub so taking weight out of the wheel would save a pound and likely (a guess) not detract significantly from it's purpose as it's not on the street.

The wheel is a casting and in Airplane Drawing Classes they said, no castings and no weldments. What they meant was, when you're designing with tax payer dollars. I can show you thirty or more castings used in helicopters like Bell 206's and Hughes/ MD 500's.

When I raced I could get a Grammy Award because I could always find places to take out a gram here and a gram there. But I still eat pizza and drank wine....