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But Mark, a front sssa might further upset our "stock is best" flag waving friends I have a backyard idea on how to do it, I just need a few more tools, and another bike, and some more money, and to get rid of the Porsche. I don't have a basement full of custom bikes like some here

porchev914 wrote:

But Mark, a front sssa might further upset our "stock is best" flag waving friends I have a backyard idea on how to do it, I just need a few more tools, and another bike, and some more money, and to get rid of the Porsche. I don't have a basement full of custom bikes like some here

I wonder if Pop Yosh would agree with modifiing a stock bike.

You mean the Guy that built his business modding stock bikes? Naw, he'd be all for it!

Stuck Fock!


thats my take anyway.

leon

Have u thought about a paint theme yet?
How about something that makes u feel warm and fuzzy?

I gotta say, I'm digging the purple wheels and the antlers! as far as the paint goes, I have been thinking about going for a wwII fighter theme, i.e. P51 mustang. Put the USAAF white star/blue circle w/white bars on the side covers, paint the front third of the tank like a checkered flag, two tone the rest of the tank and tail with silver on the bottom and frame (undecided on top color), keep the wheels black, but put two thin white stripes around the end of each spoke to mimick the tip stripes on a propellor, and tastefully safety wire exposed nuts and bolts like any aircraft engine. That's my idea anyway!

Adam, to continue in your airplane theme, I think that you should mount the rear seat backwards, and install a double Ma Deuce back there. That way the Queen can be your tailgunner. I bet that would cut down on tailgaters. Nothing says back the F off like a little 50 cal. cover fire!

Seriously, though, are you up to your ears in diapers or what? No progress pics in a solid week. When is Irishwill supposed to get you that top clamp? I'm ready to see some frame bracing. Hows that for motivation.

I'm not up to my ears in diapers....yet. I'm just up to my shoulders at the moment I like the idea of the Mrs being my tail gunner Even the 5 oh's would think twice about gettin' behind me I snet Irishwill a pm earlier just to see how things were comming. I know the guy is busy in school, plus a few other things in his life are taking up time, so I don't wanna pressure him. I had picked up a spare KZ bottom triple a couple months ago (4.99 on ebay) and I removed the stem from the triple yesterday. I'm contemplating installing it in the stock GSXR triple, that way I can have the forks mounted if it takes irishwill longer than he thinks to get the prototypes designed and machined. I have also been messing with my rearsets and trying to figure out how and where best to mount them. As far as the bracing goes, I've done some removal of no longer necessary brackets/tubes, and I need to aquired some different size tubing and sheet metal for the bracing. I'll post some pics later on for you guys, my thread is getting too boring

Well fellas, I called PMFR and got a quote for a custom offset counter sprocket. $400+ Their sprockets are CNC'ed from a solid piece of steel. I think the guy I talked to heard the surprise in my voice, and told me to contact D&G for a cheaper, TIG welded sprocket. I called D&G, and they quoted me $135, with a 1 week turn around. These prices were for an 18 tooth 530 sprocket.

So the question I have is: Is the runout on the welded sprocket enough to worry about versus a single piece sprocket design? The single piece is preferred, but at 66% cheaper, the D&G sprocket is much less damaging to my wallet. Who has experience with the welded sprockets and can tell me the cons? Thanks guys.

If they weld it before they machine it then there will be no difference.

Thats true Tdub, but I don't know D&G's process

I'd hope their work would be good if they're charging $135 for a freaking sprocket.

It's a helluva lot better than $400 for sprocket! I'm just curious if PMFR's price is worth the product over the D&G part...

T_Dub wrote:

If they weld it before they machine it then there will be no difference.

As far as runout is concerned, I agreee. However, as far as, material composition, ultimate strength, and hardness is concerned, I beg to differ. High carbon alloy steel has a tendancy to harden and become brittle when welded. Proper pre and post heat cycles have to be correctly followed to prevent hardening in the heat affected zone. There is no substitute for a part machined from a solid billet when strength is concerned. With that said, for your application, I think that the welded spocket is fine. If you had stated a goal of running high 8's with a turbocharged big block bike, then I would say to go with the PMFR sprocket. By the way, $400 is a fair price for a sprocket machined from a solid piece, and then heat treated, on what amounts to a one-off basis. Btw, I just paid $90 shipped for a 1/2" offset, 18 tooth, 530 sprocket from American Classix. $125 doesn't sound too bad considering that you need a custom offset.

You're right of course, I was responding to his comment on runout etc. All the same, if the other place heat treats after welding, you could have close tot he same properties. I do a lot of thinking about welding, one of the biggest considerations in mechanical design(I'm a mechanical engineer).

Your paint scheme sounds great.
I ordered a 530 19 5/8" offset , with a bearing support nose, from D&G last week $96. the total was 135, including a bearing($12) and shipping($27). they make them with large 3"offsets for big tire bikes. i dont know how big they go. if they are strong enough for these big tire bikes, there definitely wont be any trouble handling our bikes output.
They have been making these for a long time, they specialize in big power bikes.
What size are u needing?

You know mark, I was thinking I would need about 1.25" of offset. BUT, I got to thinking about it, and there is no way I would need that much offset. I only widened the frame 1.5", and I didn't widen it THAT asymmetricaly. I need to actually bolt on the stock counter sprocket and take a measurement. I might be able to get away with an off the shelf part
Incidentally Mark, did you pick up one of irishwills o.b. supports? Have you gotten it yet?

Yes u def need to get a stock counter sprocket on there, and put a straight edge across the rear sprocket to the front one.
it will all depend on the rear. most guys get away with 1/2" offset, but your swing arm is not like most guys.
I could have used 1 1/4" as well but i chose to mill the rear hub/carrier instead. this allowed me to use the 5/8" offset, but forced me to use a thinner 170 tire. this was due to the chain being closer to the tire now.
I did get a support plate from Ben. I have it and it looks great. i need to pick up some tubing to make the spaces for it. once the sprocket and bearing arrive, i can have a look at it. I also have a ZRX hydro clutch for it, but i have been too cheep to buy a nice matching hose for it.it needs to be about 10 miles long. i have the carbon look brake lines, with gold fittings.it is always on the bottom of my to do list.
I just have no time for the bike right now, as i have Bought a duplex for a rental investment. it needs a lot of work, so i am tide up with that right now.

OK, I bolted the counter shaft sprocket in place, lined a laser up on the rear sprocket centerline and measured off the face off the counter sprocket. taking into account 1/2 the thickness of the stock sprocket, I have a centerline to centerline offset of .9225" Now, the closest off the shelf offset sprocket is 7/8" or .875" - a difference of .0475". My question is this: Is .0475" an acceptable amount of miss alignment or should I order a custom sprocket for a more exact alignment? That equates to approx 1/23"

Adam, I wouldn't worry about 0.0475". When I was measuring for my sprockets, my countershaft sprocket had at least that much runout. Get a 7/8" and be done. What size tire is on that Triumph wheel? I guess that the wheel is slightly off center on the stock Triumph.