SlowerThanYou

There was some binding issues from the welding & like Green said adapter plate issues. I'm happy that the majority of issues, besides the cases. Have gotten fixed. The biggest problem we have now is the 90 ft. lbs. of torque!

Yes, with a bunch of other changes.

I wish, 230 lbs. race ready. I didn't go to the debut race, but Angel didn't say anything about staging problems.

After having a great outing with the DMX @ the BAKO Drags. A few changes are being made to the port timing & a few bars being changed in the chassis. It goes to Dome Valley next weekend for testing. Here's a pic of the new chassis.

Angel said he has no plans for Gilbert this year, but that could change. Spitali owns the 4mm, don't know his plans. You can find some pics & vid of the bikes below. https://www.facebook.com/siquiatriasdm?fref=ts

I hope you had a great time at BAKO, it's a great race & I wish I could have made it. I have to give a Angel (Siquiatria Sdm) & Spitali, Congrats on taking more than their fair share of hardware back to AZ. The above team with a 4mm in a stock chassis was on kill with some high 3.50 runs. Our DMX ran good for being in a new chassis, but still needs a little more work. It went in the 3.60s @ 88 mph with a less than stellar high 1.30 60'. It won the 650cc limited class & 2nd in the triple cylinder class.

LOL! Angel & the DMX will be there, but I will not. I have 2 big money car races coming up that I have to get ready for. Look up Angel & say Hi. He's the short Puerto Rican with the biggest smile you've ever seen. I wish I could be there!

Here's an example of a change we regularly do when converting from 1/4 mile to 300'. This is a drastic gear ratio change of roughly .40. We change the base pressure around 50 lbs. This is not all do to the gear ratio change, but also has to do with surface resistance/drag change also.

Cool, is this your 1st time for the BAKO Drags?

The asphalt bike is converted, but not going. Justin decided he was going to skip the event. The DMX is about 90% completed & hope everything works as planned. I'm not sure if I'm even going & if I do it will be a quick 2 day deal.

Glad to know a few are getting a clue.

Light or heavy weight doesn't change the complexity of the clutch tune. It only changes the set-up of the clutch tune. More weight loads the clutch more (more slip) & less weight loads the clutch less (less slip). This is for barneyb7 to answer: Now, using my quad with a total weight 540 lbs. & only changing the total weight to 470 lbs. You have already base lined your clutch. What should be your next step in the tuning process?

I went mid 3.90s weighing 230 lbs. with a stock frame, 443cc race gas cub. So, yes would be the answer along with some low-mid 1.30 60's.

I think you should be able to make a call on this one!

I'm all in a tither.

BAKO Sand Drags Feb. 25-28, 2016. Who's planning on going? We are converting the asphalt bike over for the event. Hoping to have the new chassis done for the DMX & trying to get another chassis/motor done also.

On methanol, we had to replace the pistons & rings at the end of the season around 200 runs. The crank (cast) would last about 400 runs before needing freshened. On race gas, piston & rings replaced around 600 runs. We ran a billet crank, it had over 600 runs & was still going strong after I sold it.

This peaked my interest in the past using a quad, but not much luck with the sanctioning organizations. No one wanted to bother with the quad & yes I tried all of them. I have actually been fortunate enough to run Speed Week at the Bonneville Salt Flats from 89-96 with a car. I would like to return with a new car, but the condition of the Salt Flats is not good. 2015 Speed Week was cancelled & the future is in limbo, based on the salt condition. Anyway, our experience is with asphalt drag racing a Banshee (1/4 mile). We have been close to 130 mph in the 1/4. This was with a 443cc Cub, 68 bore X 61 stroke on race gas & Methanol. This combo worked really well & pulled great rpm. The vast majority of the run was between 9,500 - 10,900 rpm. We also looked at doing Pikes Peak & they are very quad friendly. The have a 500cc engine size limit. We looked at keeping the same stroke & going to a 72mm bore with a Cheetah Super Cub or the original Cheetah cylinder. That would put the motor at 496cc.

Depending on your trans or using 5th or 6th gear thru the 1/8. You are in the ball park with either ratio. We use a 17/36 (2.12 ratio) for most conditions. It provides our quickest ETs in both 1/8 mile & 1/4 mile with a 20" diameter tire. In order to make any of these ratios work, you need a good clutch tune or a good clutch hand. Consistency wise, my vote is for the clutch tune.

You are conflicting on the information you are giving. What's the gearing, 38 or 40 rear teeth & what size tire, 20" or 19" diameter?

Here's a pic of the bike.

What paddles were you using & how many? X2, we had a 7mm Cub 443cc we ran at Dumont & Glamis. We used a +8 arm, it carried the wheels no higher than 10" from launch & thru the gears. We had a good amount of clutch work done. This was done with 12 paddle extremes & 14 paddle haulers.

17/38 gearing = 2.24 ratio, 38 divided by 17 = 2.2352941 gets rounded up to 2.24 If you need more rpm then the ratio provided (2.24). The ratio needs to be higher & just the opposite for less rpm. Get a ratio chart or do the simple math of rear sprocket divided by the front sprocket to get your ratio.

As you have figured out, 19/34 doesn't allow you pull the rpm needed in the 1/8. Sleeper pointed you in the general area you should be in. IMO, gearing is set for RPM you wish to achieve at the set distance you are running/racing. In most cases you want to be at minimum, the rpm your motor makes peak HP. Example: motor makes 100 hp at 9,700 rpm. The minimum rpm you should shoot for is 9,700 rpm in the gear you are crossing the finish line in. Now, on most of our motors we try to be above that minimum by a certain amount of rpm, to achieve the quickest/fastest times . Sometimes as much as 1,000 rpm higher depending on different factors like: rider/bike weight, motor size, distance, just to name a few.

Sucky Banshee vid from last weekend. https://www.facebook.com/bryan.king.37017/videos/941071342606820/?pnref=story Demo/Hoopty Camaro vid. https://www.facebook.com/bryan.king.37017/videos/941071549273466/?pnref=story