SlowerThanYou

I talked with Angel Wed. evening & he's making headway with the DMX. We picked up over a tenth an half in ET & 9 mph over our best previously. He's trying to get the right tires on it to get it to hook. Plus, he was changing the gearing over to launch in 2nd gear instead of 1st.

Yes we have & the jetting didn't help, but I haven't cut the threads off to see if we're still lean. I'm putting in the multi-stage lock-up & doing some other mods to the clutch system that this set-up didn't have.

Glad you enjoy! I can't keep up with Tyler though, you must like him too. I've done plenty in my racing career. I just like to rub a little in peoples noses in the HQ Circus. According to some on here, I have nothing but junk. I'll take all my shit race vehicles over all the Naysayer's junk. Now, if you or anyone else don't like it. So What! Put me on ignore & stop reading.

Thanks for your opinion! I'm sure the 2.05 final ratio is not helping the matter. I may need to change my 1st gear ratio. It seems like the faster we get. The more this thing is get finicky with the clutch & I'm sure it's heat related. We may just need to slow the bike down & find a nice comfortable race set-up. I'll post up the changes in the lock-up thread or resurrecting the 1/4 mile bike thread. Plus, I'm changing over to the rat poison race gas next time.

I hope to hear some decent numbers from the DMX. Justin qualified #1 today & lost in the 2nd round. We are having clutch problems, after 3 or 4 runs. The clutch gets tight and bogs. I'm tearing the clutch apart & probably installing the Multi-Stage, but I would like to find the cause of this problem. I'm going out to test the changes in 2 weeks, hopefully.

That's OK, I posted your answer last night.

Here's a pic, if you look real close I was sporting my new BHQ T-shirt underneath my jacket.

Heeee......Heeeee! The Hoopty/Demo Camaro wins with the old man driving. After taking 2nd place on the last points race. I was on a mission this points race. Should be setting really good in the points!

Hate to tell you non believer's, that I didn't have any problems testing tonight. Made a real easy low 4 sec run to the 330' mark. Came back on the second run & made a nice fast full 1/4 mile run. I made a total of 3 runs & Justin made 3 runs. This old man is still fast, just need to knock a few cob webs off to get faster.

I forgot, Tedder is buying me that Steak dinner tonight that he owes me from getting beat by the Demo/Hoopty Camaro.

Thanks J-Madd! The bike is ready to be fired tonight. Leaving Sat. morning no time for Dyno. Still have a few small details to work out.

That's a big negative! Anyway, just got home from lunch & beers with Tedder & Wife. Talked a little bit about our grudge race. Nothing set it stone, I'm basing my decision on my test hits Fri. If I'm not comfortable, I will stay retired from riding.

Only looking at Labor Day Weekend now. This old man is getting back on the seat with test hits this Fri.

I have to thank Green for bringing up/asking if the motor was lean. He hit the nail on the head. While it may or may not be the cause of our issues. I'm sure it's contributing to them. Thanks Again! Here's one of the plugs. The idle/low speed area tan is darker than being shown in picture. It's richer than we prefer. The mid range is lean, but we don't pay much attention to that. We are either at low speed or wide the fuck open. The high speed area shows a more distinct yellow than shown. Along with a light/faint & too narrow grey fuel ring. We had 185 mains & went to 188s to correct the issue.

Thanks, I'll have to chat with Angel to see how he has it set-up.

Angel is the one dealing with them & I think he's has used them before. Any suggestions would be appreciated, if you would like to share.

Depending on when & if the domes come in this week. It may make it to the dyno. If it goes without Dyno time it will be tuned during T&T at Gilbert. Not the way we like to do things, but running out of options.

Things have not went as planned. Angel leaves for Gilbert, LA. next weekend. The DMX should be done this week & may have time for the dyno. Regardless, it's going if the domes make it in time. The pipes have had the back halves reworked & have a flange for stingers or silencers. Angel also upgraded the carbs to Lectrons with the good bowls.

You have brought up a good point twice & I'm paying attention. I've always said the clutch tune-up is not a cure for other tune-up problems. The low to midrange of the plug is reading richer than we normally run them, but I haven't cut the threads on the new plugs to see where the mains are at, yet. Got to find time to do that this weekend. We have ran both Alky & Race Gas. IMO, between the two, Alky is much more sensitive in the early part of the run than Race Gas. Now, on the last part of the track. With Race Gas or Gas period, you have a narrower tuning window & being fat is slow. Where Alky has a wider tuning window, you can run it rich & still make good power.

I'm sure arm weight contributed, but IMO we are getting close to not having enough arm weight. I'm worried about it slipping the clutch on the 5-6 gear shift. We haven't even been close to a problem at 15' out with this standard lock-up or even with the multi-stage. I attribute the majority of the problem with getting really aggressive with the initial launch. The only changes we made to the set-up for that run was raising the launch RPM & raising rear tire pressure. I'm pretty sure we are at the RPM we need to leave at the majority of the time. Now, we need to figure out how to slow the arms down. We are going to lighten the arm weights slightly. I'm also going to machine a part & try another theory to hopefully slow down the arm application.

This is the problem we had in the 1st round of racing & caused the loss. The quad left really hard & was on the wheelie bar good. About 15' out it bogged & slammed down on the front tires then came back to life for the rest of the run. What do you guys think some of the causes were for that problem? We have our game plan to make the appropriate changes this weekend & test/race them next weekend

OK, some of it was covered in post #385 & #386. Tricked, you picked up on the adjuster bolt. What else can you see in that picture that would affect reaction time? Clue: there are 3 other areas that I know of & maybe some that I don't.

I appreciate people trying to help me out, even got a PM on the subject. I really don't feel too lost with this clutch set-up. Does it need work, yes! But that's all part of tuning any aspect of a quad. I have went thru the basics & a few intermediate level clutch tuning areas in this thread. This part of the thread I wanted to give some real world examples as they happen. Then I hope to switch sometime in the future to the Multi-Stage & give some comparison/differences in the performance/set-up of the 2 lock-up. If I haven't answered anybody or you need clarification. Please speak up in this thread & I'll try to explain it better.

Tricked, sorry for the confusion. The 2nd run was slower by 1 hundredth in ET. What picked up was reaction time & that's what was being used for qualifying. The 1st pass was a .140 & the 2nd was .057 both slow. When the clutch was somewhat right Justin qualified with a .012 & that only got him 8th in the field. Note: Clutch tuning isn't just for performance, it affects reaction times also.

The launch rpm is staying & going higher. We can make adjustments in 100 RPM increments. LOL! we have already been thru the pogoing deal & that has always primarily been too much wheelie bar wheel height.