| Author | Message | ||
     Aaron |
Gearhead is right, but it only applies to '00 model cams. '01 and later use high contact ratio one-size-fits-all. An '00 is high contact ratio between the pinion and the intake drive gear, but not between the intake and exhaust gears. A Blast only has 3 sizes of each, though, a sporty has 7. Most any XL cam is adaptable to the Blast. In fact, they come from the factory with XL1200S cams and there are two sets of alignment marks on the drive gear, one set for installation in an XL and another set for installation in an XB or Blast. When putting in bigger XL cams, you run into problems with the lobe hitting the pinion race if the base circle is stock and the lobe has more than about .530 of lift. But it's fairly easy to radius off the edge of the lobe 1/8" or so. The XB has the same issue. XB cams are .550 lift but they have a smaller base circle than XL cams so they clear nicely. I've got XB cams in my Blast at the moment. They need a custom timing rotor, for some reason HD decided to put the XB's timing rotor keyway in a whole different place from the XL cams. Good lobe, gentle on the valvetrain. Not enough overlap for the big power, though. Most power I've made so far has come with N9's, 66 degrees of overlap in them babies. They also have a small base circle so they slap right in. | ||
| Ezblast |
So - if I where to give up a bit on the overlap though there would be an increase in torque? - though I loose a few ponies? What xl cam would fit that profile? Just full of questions today - thinking about the new Blast - you stated that the 550 could be run well with better springs -anything else in a Blast need changing out also?I think thats it on the  's Got Thump?! Just Blasting on the Dark side! EZ  (Message edited by ezblast on May 17, 2003) | ||
| Aaron |
Well, overlap connects the intake and exhaust together, and as such, it makes the motor much more sensitive to it's exhaust system. If the exhaust system pulls down low, more overlap can actually give you more bottom end power, but usually exhausts don't get much inertia scavenging effect at low rpm so high overlap cams are generally ground with a fairly late intake close point. Remember, intake close is the most influential event by far. For all around street use I'd say B70's or XB cams are both probably good choices. Both need new springs and would benefit greatly from good port work and more compression as well. Them B50's (SE bolt-ins) are awfully mild, I can't imagine they do much for a motor. | ||
| Ezblast |
So the XB would be the cam of choice! you said what kind of modification would you have to make to the cam - and valve piston clearence would be ok in a blast - would longer pushrods be needed? Could the Blast timing rotor be modified to be used with the XB cam? Got Thump?! Just Blasting on the Dark side! EZ  (Message edited by ezblast on May 17, 2003) | ||
| Aaron |
The XB cams have about a .050 smaller base circle than the Blast cams, and that's enough that they'll go in the Blast motor without having to radius the intake lobe, not a problem. .050 smaller base circle means technically you should get a pushrod that's .025 longer, but remember, your stock lifters have about .200 of travel and the stock pushrods are sized to put the lifter in about the middle of it's travel within some tolerance. So assuming the head otherwise stays at the same height, you're .075 from topping out the lifter (roughly) if you just slap in the XB cams and use your stock pushrods, which is fine. None times out of 10 though people shorten the stack at least some to improve the squish and that of course sends it the other way. If you shorten things exactly .025, you're back at centered. There's a bit of a problem with shortening a Blast to improve squish, though. The Blast uses a 15 degree Thunderstorm piston and a 10 degree Lightning chamber. So there's a mismatch. Not a big deal at the factory's typical .055 or so squish, but run it down and you create a problem. Worse, the mismatch is in the wrong direction, creating a fuel trap at the o.d. You can get a 10 degree piston (we sell one) or you can cut the chamber 15 degrees (we can do that, too). On the timing cup, what I did was just cut a second window into my stock Blast timing cup, in the appropriate place for the XB cams. I now get one pulse per crank revolution, instead of one pulse every other revolution, but that works for me since I have a tach made for a twin. I do have to run the ignition in twin mode though, which means I have no tps or electric choke. A person could fill in the other slot, wouldn't be hard to do. (Message edited by aaron on May 17, 2003) | ||
| Ezblast |
Thanks Aaron for the cam lowdown, Now know whats instore for my second Blast! That information is priceless! I'd be filling in the other slot! - lol - That helps a lot in the planning for the second Blast - I'm sure everyone else is paying attention to what you just said also! One last question - how many ponies you get out of that street 600cc Blast you were working on? - just looking for a round about # nothing tight is nescessary that way protecting owner confidentiality - Again thank you! Got Thump?! Just Blasting on the Dark side! EZ (Message edited by ezblast on May 18, 2003) | ||
| Gearheaderiko |
Love Badweb when it gets technical like this! I can hardly keep my wallet closed now! (thanks for the cam info) | ||
| Spooky |
I'm home at last from the Myrtle Beach bike rally.  | ||
| Ezblast |
Well - how was the trip - any pics of interest, besides having a wild time did you do anything?  This is the Myrtle Beach in Virginia - not the one by Daytona in Fl. right? Got Thump?! Just Blasting on the Dark side! EZ (Message edited by ezblast on May 19, 2003, %time) | ||
| Spooky |
Myrtle Beach, South Carolina. This was the 63rd year of having a rally there. I hung out with some of the guys from Zippers. Try keeping up with a not so stock looking S2 that tach out at 8000 rpms. We talked about what all they have done with the Blast. So far the biggest they have done is a 600cc Blast that is making full power at 8 grand  . I then told them there where a few 720cc Blast running around and their jaws hit the ground. I have been invited up to their shop to get the full tour and I might get a few goodies while I'm there. I've will have some pic's as soon as I get the film developt. Toally cool! - Thanks Eric! - (moderator) (Message edited by ezblast on May 19, 2003, %time) | ||
| Fssnoc2501 |
Hey all, Just got back from a visit with Aaron. The new shop for Nallin Racing Heads is totally cool. The hospitality of the Wilson's and the Nallin's is unparelleled. It is just too cool to see these kind of sites out the back door.  Or to be this high in the nose bleed seats.  After watching (and helping a little with my meager abilities) Aaron, Brian, and the whole gang at Nallin Racing work for a couple of days, I found a new respect for customer service. These folks put their heart and soul into what they do. I want to tell you that getting a bike dyno tuned is not the simple process of putting it on the dyno and taking a couple of pulls. It requires most times, several pulls, lots of knowledge, a pinch of art, and a damn big pile of hard work. These guys truly try to get everything out of the engines they build. Aaron was able to get 44-45 RWHP out of my Blast, and is currently working on improving that. I hope to post a dyno sheet soon after he and Brian gets done. Sorry, I won't post the details of what's in there yet and probably not for awhile. I will say that if someone is interested and wants to spend the money the folks at NRHS can fix you right up, but the set-up I'm getting may not be the best for street usage. Ray | ||
| Blake |
Geez Ray, Why the big secret? We've already seen 50RWHP out of the Nallin Racing 515cc kit, have we not? Sorry, but when people overtly volunteer that they have secrets that they refuse to share, I get a little irked. Why announce it in the first place then? If someone asks, just say "I'd rather not say at this point". How about this... Hurricane piston 11:1 CR, N9 cams, Stage III XB Head, Roller Rockers, Hydrosolids, Mik HRS45, Racing Exhaust, SE Ignition. | ||
| Fssnoc2501 |
Blake, Sorry to hurt your tender and delicate feelings. If you feel that all details of what is in my motor and on the bike which can put in jeopardy my attempt at Bonneville. Is our memory so short Aaron's experience in 2002. I guess I'll quit posting so I don't offend poor Blake. Ray | ||
| Fssnoc2501 |
Blake, You might wan't to also check the class I will be running. Big Bore kit? I think not. Also I'm trying to share as much information as I feel I can. In fact, if someone wants to go through the archives I've shared more than I probably should have. Aaron and I had a fairly long conversation about this very subject. I have invested alot of time and money in this project and nasty surprises like Aaron had last year do not set well with me. I apologise for the secrecy, but the end product (a couple of records)is very important not only to me but to my sponsors. Your guesses are somewhat correct. Yes I have roller rockers, and hydrosolid lifters. Otherwise there are several one off parts. Is it fair to my sponsors and me to be completely open? No we have lots of time invested. If you feel this is not fair to you please let me know and I'll quit posting any information and find another avenue to get what information I feel I can divulge to those that do want that what I can give out. Hope you can understand my position, if not, all I can say is I'm sorry. Ray | ||
| Ezblast |
Ray its cool! - Blake - in the nicest way - shut up! I give not two figs about any of your twin competition - last I checked this was the Blast Forum and Ray is just being cautious - can't blame him - there are some ideas that remain secret just for the edge or because it wouldn't be a wise general practice - alot of track stuff is like that - and you know that - go buy a Blast then come on back and talk - lol - in a way just kidding - on the other half quiet serious;0) Got Thump?! Just Blasting on the Dark side! EZ (ps - you get irked by everything - lol)  | ||
| Rebelgtp |
Ray very cool about the power you are getting and the idea of one off blast parts makes me drool. good luck at the salt this year. think you will be back down there next year? if so you may see me down there with my 'macchi i'm building up. will probobly have my blast with me to but it won't get raced at the salt | ||
| Ezblast |
Totally cool! Sounds like the singles are really starting to take off - Ray - after this years salt run I'd be real curious to know what your running to bring that kind of power out of stock jugs and pistons - are you running the XB cam? I'm such a nosey SOB - lol - And next year a Macchi - sounds like Thumper fun! Got Thump?! Just Blasting on the Dark side! EZ | ||
| Spooky |
Here's a pic of my Blast ready for the trip to the beach, I'll load the rest sometime soon.  | ||
| Ezblast |
Colorado's beautiful country Ray - I sure hope you enjoyed your stay! Spooky - damn that Blast is loaded! How much weight do you think you were carrying? Looks like you must have camped out! Cool! Got Thump?! Just Blasting on the Dark side! EZ  | ||
| Rebelgtp |
ed well yeah thumpers are just plain cool man and easy to work on. oh yeah i'll be doing both a 250cc and 350cc aermacchi for the salt i think. workin on the 250cc first. have someone helping me get it race prepped once there it should redline at 10,000-10,500 rpm and get some decent hp out of it. when he told me that my jaw dropped lol...i have some plans for my blast to but those are going to come a lil slower. (Too Cool!  - Moderator ) (Message edited by ezblast on May 20, 2003, %time) | ||
| Blake |
Ray, Whoa man. The secrecy is your call 100%. I was admittedly being very pissy/bitchy. You are right to tell me to bugger off. I've learned that I shouldn't read Dyna's postings and then come here in a foul mood and bitch at you. You might consider in the future though that if you truly have secrets that you want to keep, announcing that you have them might not be the best thing to do, no? Good luck. I'm sure you will do well and achieve great success. I for one am VERY interested in the Blast and any efforts to race or augment the performance of one. Go Team Elves! I guess you will be the chief Thumper Elf? EZ, Down boy! In the nicest way.. Make me.  "> BOO! - moderator - lol (Message edited by ezblast on May 20, 2003, %time) | ||
| Fssnoc2501 |
Blake, Thank You,  your apology is well taken and accepted. I agree that the safe bet would be to say nothing, but the support I get especially from this part of the BadWeb makes me feel somewhat obligated. This creates a very precarious position for me. I'm not by nature a secretive person, in fact, what do you want to know about me I'll probably post it. It terms of the LSR / Team Elves project I feel that some secrets are appropriate to achieve our goals. It's a tough tight rope that we must walk sometimes though. As for Dyna, have him take two Midol and call his doctor in the morning. He takes the small shit way too serious. Ray | ||
| Ralph |
Hey howdy Blasters! I just posted my wifes Blast on the for sale board if'n anybody is looking for a cheap bike. bighairyralph | ||
| Spooky |
Here's the rest of the pics. The bike looks loaded down but there is not much there, maybe 20 lbs at the most. Camped out one night under the stars.  I just cross the state line into South Carolina stoping to pull my helmet off.  I rented a house for the week with every one here in the pic. Two are missing from the pic. One of them works for the FBI (just my luck).   Orange County crew and a friend of mine.  My one night under the stars    Orange County Choppers Panhead I load some more in the morning and I'll try to make them smaller. I'm alittle new at this. | ||
| Ezblast |
Nice Show iron what did the street stuff look like? Shows have a hard time competing sometimes with the iron in the parking lot - lol - looks like you were working hard at having a good time - cool! Brings me back to years living in Daytona - lol Got Thump?! Just Blasting on the Dark side! EZ | ||
| Jprovo |
Spooky, It looks like you had a great time. Well, my Blast just pulled a Norm Hardy and had its mirror fatigue off at 10300 miles. I’ll just have the dealer cover it as warrantee work. I’ll post some pics for all to see tomorrow. If I could stop riding it for a while, I might actually sit down and design some rearsets for it, I love this little bike. James | ||
| Ezblast |
James - my feelings exactly! Even the stocker is fun and good knee rehab. - lol - they are actually going to warrentee the mirrors? - thats a cool first! Got Thump?! Just Blasting on the Dark side! EZ | ||
| Rebelgtp |
great pics spooky lookslike you had some fun while you were there! had some friends tryin to talk me into going but with no job the trip from the west coast would be a lil spendy. hey ed found a 500cc big bore kit for the aermacchi but figured i wouldn't go there wouldn't wanna compete with my fellow blasters lol. the 250cc once done should hit around the same speed as a stock blast 95-100mph not bad for a 250cc single. god i wish my parts would get here faster lol. oh yeah for the guys using the new buell race pipe how about an update on how you are liking them? getting a new pipe soon and was thinkin about going that way. | ||
| Jprovo |
Ez, I dunno if they'll cover it yet, but I've owned it for less than a year... Why not? James | ||
| Ezblast |
I don't know - a 500cc Aermacchi would really be cool! - and kick butt! James - you've probably got one of those good dealers - my rebuild was done by one, however my dailly experience with the local DP is still very tepid - just when you think these guys are getting their shit together they seem to strive to prove otherwise. I bought my second bike from them - told them to shine it up and make it look like new - as good as you can - wheels were still dirty and muffler unpainted - took it back said try again - this time wheels still dirty - took a rag with some brake cleaner and whiped a wheel and the stuff came right off - they didn't even try! - I don't know what to do with this bunch of clowns anymore - sometimes they come thru and sometimes you can hear the wind from their striking out! - ahhh well - if you got a dealer willing to do that then you've got a good one! Hell - I had to let mine know about the Buell sponsered BattleTrax! they were clueless! - Got Thump?! Just Blasting on the Dark side! EZ |
