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Post by reveeen on Aug 4, 2011 18:31:32 GMT -5
I don't know if it's junk, or not...... I have never owned one, and never seen one other than in pictures. What bothers me is: it is in the ballpark price of a LV hand made TT, which, while not the "best", is a known quantity. I would expect for a "no name" it should be at least as good as a LV TT, if not better. Have a read on the project 90 thread for a direction on pipes: 49ccscoot.proboards.com/index.cgi?board=builds&action=display&thread=1669I, at this time, can't recommend something. I own both bigger and smaller (engines). I typically buy a low, to mid range, pipe (cheap), and modify it to suit me (cutting and welding).
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Post by 90GTVert on Aug 4, 2011 19:53:43 GMT -5
The YMS V8 and Phongeer pipe are good choices for a stealthy street build that doesn't rev out too high. Both can be obtained pretty cheap, around $150, and they're intended for 100cc engines. I got my PG pipe from VT Cycles and the YMS from jiingwayne. If you plan to port, you could see some benefit from a racier pipe. The best high performance pipes for engines with some port work that I know of are custom made by our member 190mech.
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Post by 1quikvento on Aug 4, 2011 21:11:23 GMT -5
Okay its officially been confirmed, that if given the right opportunity and set of circumstances, 2stroked would indeed do the no pants dance with that sweet and sexy tuned pipe that his homie created for him.
umrider45- You shoulda added an R to the beginning of your sig. that sounds more cooler.
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Post by umrider45 on Aug 8, 2011 16:46:22 GMT -5
SOrry I havent gotten back, Im pretty sure its the exhaust, I put my stock exhaust on with stock weights and it is a lot faster. But since the mounts half broke its really loud and still not "top notch". I looked at VTcycles for the phoegear pipe with no luck, do you have a link? Also I cant find jiingwayne too look at the YMS pipe.
Thanks!
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Post by umrider45 on Aug 8, 2011 16:52:45 GMT -5
Scratch that, found the Jiangwayne site but couldnt find a pipe that was a YMS that would fit a JOG100, am I looking past it or is it not there anymore?
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Post by reveeen on Aug 8, 2011 17:16:05 GMT -5
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Post by 90GTVert on Aug 8, 2011 18:06:40 GMT -5
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Post by reveeen on Aug 8, 2011 18:12:06 GMT -5
Noting: the two pipes have different inlet sizes 25-26mm, I would be tempted to choose the one that fit my cylinder, and my intended rpm operating range.
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Post by umrider45 on Aug 9, 2011 8:05:14 GMT -5
Ok I will measure before I choose, the second one says not.good for and everyday rider, is that really a big deal or would ot be okay to use? And it also.says you need a bigger carb, wpuld mine suffice with a bigger jet and aftermarlet airfilter?
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Post by reveeen on Aug 9, 2011 9:05:19 GMT -5
Myself, I prefer the "regular" expansion chamber type of pipe, though they are usually louder, and seem to operate best at higher RPM.
I am tempted to buy a V8 pipe (the first type) for a build I'm currently gathering parts for. (a large displacement, 30+ year old Honda engine)
I would expect the first type would generate more torque at low RPM, and run "out of steam" around 8500 RPM. The second type trades bottom end for top end, running "out of steam" around 10,000. ("out of steam" meaning no more power gain)
A pipe won't work, or work as it is intended, unless you have the capability of filling both the cylinder AND the pipe, which you won't do, at high RPM, with the stock carb/intake. Cylinder timing/porting plays a part too, with longer timing durations, aiding this "filling".
*Remembering* that an expansion chamber on a 2 stroke relies on over filling the cylinder into the exhaust. The rear cone diverts the exhaust "push" back up the pipe, pushing the intake charge that has leaked into the pipe back into the cylinder, in effect supercharging your engine (because when this "push" comes the intake is closed) the exhaust then closes, and ignition "happens".
If it is your intention to run a fairly stock (internally) 100cc engine, and you are looking for reliability lower RPM operation gives, than the 1st pipe is your choice. If you are intending on updating (or improving) your intake situation (in the future), with maybe some internal mods (porting), then the 2nd pipe becomes "choice".
If you are following the build Brent is doing you can see these engines are pretty mild/conservative stock, where the manufacturer is looking for bottom torque (ATV application) and low RPM/high reliability.
I am almost wondering if this inability to fill the cylinder/pipe is the "problem" with the pipe you bought, corrected by using a pipe designed to "work" with a lower volume (your stock 50cc pipe)? Did you check it (the pipe you bought) with a coat hanger (straightened out), or a welding rod, as I suggested? (because the Scrappydog pipe looks awfully like the 2nd pipe, and I don't believe he would intentionally sell you junk)
Pipes are a hard choice, but it is far more difficult to build a "one size fits all" type of pipe. When many of us buy a pipe we want it to work in a specific situation, and, as the situation changes (by improving our set-up), we expect the pipe to keep up. Whatever you buy is a compromise, designed to "work" for "joe average" in a average situation, stray too far from average, and your pipe will stop working.
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Post by umrider45 on Aug 16, 2011 16:31:32 GMT -5
Welp, finally got around to putting a coathanger down my scrappydog pipe today, about 3-4 inches down the pipe, a restriction washer, i fiannagled though that and 6 inches further down I hit something else. I think I am going to go with the first pipe for now, although I have jetted it and put the performance intake on, and am putting on a carb when scrappydog gets it back to me, I do not know enough yet to start porting and such. I got a new clutch in the mail today and Im dreading putting that on. Ive heard that its a pain lol, I watched a few youtube vids but Im limited on tools. Overall, I would like a engine with quick acceleration, about a 55-60 top speed(since I cant see getting much better than that without sacrificing too much acceleration), and can handle hills at a decent speed. Hopefully I can play around with this engine and get what I want out of it then use what I learn on a new "project engine" that I can port and such. But Im going to go attempt the clutch replacement now, wish me luck.
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Post by 90GTVert on Aug 16, 2011 17:31:02 GMT -5
Good luck! You know where we are if you have trouble with it.
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bigjeff
Scoot Enthusiast
just scootin
Posts: 294
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Post by bigjeff on Aug 18, 2011 12:41:13 GMT -5
I used an old automotive belt cut into a straight piece and a pipe wrech to fashion a "strap wrech" to hold the clutch bell. Wrapped the belt around the bell then cranked on it with the pipe wrech to make it tight then used a socket and a rubber mallet to break loose the nut. I used a oil filter wrench for the variator. I love using what I can find laying around.
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Post by umrider45 on Aug 18, 2011 14:41:36 GMT -5
That is genius, I did not succeed the other day but with that trick and now that Im not screaming at it I may be able to get it. Thanks a ton!
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Post by umrider45 on Aug 18, 2011 17:38:42 GMT -5
90Gtvert, do you know the model of the phongeer pipe that would fit mine? I cant get around vtcycles' page so I went to phongeers site and the only have the model numbers and not what it fits.
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