FireHead

I grew up in Washington. Bonney Lake is sort of East of Tacoma, which is south of Seattle (it's probably best that you never take driving directions from me). :ermm: I know know where Dan's shop is and I have talked to him a few times in the past. The last I heard was that he was sort of taking a break from his business. I don't know if that's true or not, but I'll try and get ahold of him. :thumbsup:

Like, I said, I have had four different professional opinions given to me. The delta between the shortest and longest arm is 6 inches. I am sure alll of these people know what they are talking about, but their opinions are so different that I am also being receptive to others opinions, experienced or not. This is sort of turning into a design by committee situation.

This is going to be a short, incomplete explanation from me, because I am trying to get out of the shop tonight and get a little bit of sleep before I have to be back at work tomorrow. On a design theory level, detemining which pipes you need is a function of the volume of ehaust gas you move and the rate at which you moce it. Besides the obvious difference in stinger diameter, the expansion chamber will also be different between the two types of pipes. In addition to that the flanges on the head pipe can also be different sizes. I am not sure what the popular criteria is for choosing between the two style of pipe. When I make my pipe choices it is based on a mathematical equation and/or results of a simulation. Not too many other people do that, nor do they probably need to. I'll post up the formulae tomorrow as I do not have it in front of me. :geek:

Me too. That is a good idea. :thumbsup:

I have seen some of the aftermarket spring loaded chain rollers and I think you are right. That sort of thing will solve my problem I think. I currently work for the Japanese (through this Saturday) and their engineering process is certainly unique. Sometimes it spawns great ideas and sometimes it spawns big turds. I suppose that is true with anything, but it's pretty interesting. It's almost design by committee over there. On time delivery is always more important than the details of design Intersestly enough (or not), my new company is German based. The Germans are polar opposites of the Japanese. Engineering is very individualized and the quality of the engineering work takes precident over everything else. That's a great picture comparing the DM and Cub cylinders. IMO the cubs obviously had to have some compromises made with them for them to be successful using and many OEM designed Banshee parts as possible. Hopefully I will be able to get some of my engine out of my work this evening and I can take some pictures of it.

I assume you meant to have a link in the post some where. However, it does seem to be showing up. :thumbsup:

It's definitely not a common swingarm. I have never seen one like it. The thing about fabricated parts like that, is that any talented metal worker can make on in their garage and have it chromed. There maybe a chance that it's not a commercially produced arm and you will never find out who made it.

I sent you a PM. This guy has pissed me off to the point that I kind of don't want to help him out. ::

GT definitely does good work. Before I start shopping for an arm by vendor, I would just assume get a better idea of what I need. I have recieved alot of reccomendations so far, but they seem to be all over the place and no one has really been able to back up the reccomendations with a technical explanation.

I don't like Planet Sand very much. The population over there is mostly a bunch of folks with too much money, that don't work on their own stuff, and pretty much talk out their asses. There are a few good industry folks over there, but you have to listen to 10 people, who have trouble getting out of bed in the morning without getting hit by a truck, tell you about something they heard about once, that some other guy saw. :shoothead:

That's different. I haven't seen an arm like that before.

I have pretty much no experience with a wheelie bar..........................I have no idea what to do once you throw that in there. I know you're right, but how to put a number on the arm legth I need is tough.

That frame. 180hp'ish. Linkage style arm. :thumbsup:

It helps a little bit. My red bike puts 72hp down to the rear wheels and I am well within the operating limits of my +4" arm. If I were just duning I wouldn't put anything more than a +4" arm on my bike. However, my triple is probably going to be putting out closer to 180hp at the rear wheels. So. now you can kind of see where my personal experience gap is. :thumbsup:

I going to be doing both hill shooting and sand drag racing. Probably a great deal more hill shooting. I am sort of leaning towards a linkage style arm, but I would like to hear some other opinions about it so that I can feel better about my decision. :geek:

I have am still dealing with this guy who bought my carburetors. He must have changed his story 30 times. He hasn't filed anything with eBay or Paypal that I know of. He emails me once a day telling me how pissed off or annoyed he is. I have no problem being an asshole to the guy, but I would like to avoid all the happy horseshit that goes along with negative feedback on eBay or a Paypal charge back. I suppose I wouldn't even give it a second thought if there wasn't about $200 invovled.

Like the title of the thread states, how does a person go about figuring out what length of swingarm is best for a given application? What are the advantages and disadvantages of the different style of construction, and different materials? What are the advantages of having a link vs. no link arm? Is you swing arm choice effected by the type of shocks you are going to use? I am trying to figure out the swing arm length I need for my triple and it's frame. I am not really sure how to shoose a good set of paddle tires to start with. From there on I think I can make an engineering case for several lengths of swingarms. So, I'd like to see how everyone else chooses their swingarms.

Admit it, you eat yours too. :ermm:

Just to make sure we're clear, I didn't say it was too expensive. :thumbsup:

Sure..........................you were cleaning it and it went off in your hand. I have heard that a thousand times before. :yelrotflmao:

If you think that is redneck, wait until you hear the story behind it. I remember reading about it in am agazine, but I will let some one else from around the area tell about it. :thumbsup:

I eat mine.

Yeah, the new Twister cylinders are going have the coolant inlet port on the lower left side of the block and have it exit out the top of the head somewhere. If done properly that ought to give the engine a proper cooling system. :thumbsup:

Yeah, except no.

I have a stock airbox sitting on the floor next to me. It is in great shape and has the lid with it. I even cleaned it really well. The only thing wrong with it is one of the clips that holds the lid on is sort of tweaked. I think you could fix it, but may be not. How much are you looking to spend? I can take pictures if you like. :thumbsup: