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Old 08-12-2012, 07:41 PM   #11 (permalink)
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Hyosung - '07 Hyosung gt250r
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The tail was made of PVC pipe/ steel rods/ wood. The cardboard will be replaced with election signs (design from L&S). Tarp replaced w/ aluminum sheets.

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Old 08-12-2012, 09:39 PM   #12 (permalink)
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Hyper-miler, I lowered the bike with lowering links in the rear & just pushed the forks up in the front, I put on a set of drag bars that I already had, with a 3/4 in. spacer under the org. clamps. I put the 16t front sprocket on tonight & looks like a 17T would still fit, be ordering one soon. My fairing frame will most likely be made of 1/2 conduit, along with aluminum sheeting. What gearing are you running? Maybe we can work together on this. Joe
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Old 08-12-2012, 11:04 PM   #13 (permalink)
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Hi Joe,
I am using 15t in the front and 40t in the back. I have been looking for cheap aluminum sheeting but even for a 3 by 8 ft of 26 or 28 guage its $50+ from the local recycle yard. I might go L&S route and cover in election signs.
Going up in the front is a better idea than going down in the back so you don't have to cut out links in the chain.
Look forward to collaborating w/you on beating the ninjas.
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Old 08-19-2012, 05:33 PM   #14 (permalink)
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Quote:
Originally Posted by greenjoe View Post
Put on another 150 miles this week and ended up with a disappointing 61.9mpg. I think a big part of that could be from lowering the bike, it now stands alot straighter when on the sidestand, allowing more fuel in the tank before it gets to the filler neck. Also made a 16t front sprocket & will try it with 38t rear.
Did anything else change apart from the transmission ratio and the height?

(I'm late, but interested: my girlfriend has a GV250 with the same engine, and sometimes I ride that bike too, though less willingly by the minute. Heck, the last time I fell with my own was at winter, on ice. Now I could fall with hers. Way too different to my Teresa, it distracts me very much...

But we'll finally have a taller ratio on the GV250: just a 15t front sprocket, but we fly low )

edit. I retired Ciliegia here, but shiNIN (my girlfriend) keeps logging her FE at cleanmpg (you can switch units):

http://www.cleanmpg.com/index.php?pa...e&viewcar=3503

Last edited by alvaro84; 08-19-2012 at 05:38 PM..
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Old 08-20-2012, 09:19 PM   #15 (permalink)
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Not many more changes than I said, & not anything that would decline mpg. I really think I need to work on my re-fueling accuracy. Since had made 16t & 17t front sprockets and like the 17t so far. An 18t looks like it would be really close, would try it now, but it's already very tall gearing with no bodywork.
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Old 09-10-2012, 09:48 PM   #16 (permalink)
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Have got the front fairing frame work built with 1/2 conduit & screen cover. Is there any reason why paper mache wouldn't work to cover it? Played around with a test piece last night & seems to be very rigid with only a few layers. I plan on doing a thin coat of fiberglass over the top. Just wondering if anyone has tried this method & with what results?
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Old 09-10-2012, 09:58 PM   #17 (permalink)
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It seems like a lot of changes at one time. Could it beneficial to do do three changes separate, with a 50 mile ride between each one, than three and then a 150 mile ride? Just because two mods might be helping a LOT, but then another just kills the gains and then some.

Just an idea. I noticed a huge change after mods, but made roughly seven changes all at once. So, it worked, but what worked how much has become more of a mystery.
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Old 09-10-2012, 11:15 PM   #18 (permalink)
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Quote:
Originally Posted by UltArc View Post
It seems like a lot of changes at one time. Could it beneficial to do do three changes separate, with a 50 mile ride between each one, than three and then a 150 mile ride?
With just the gearing mods (15T/40T), and after taking off the rear tail, front windshield, and adding Harley Riverroad saddlebags to carry stuff I got 55mpg over 200 miles (50city/150hwy @ 65-75mph-5k-6k rpm). I couldn't use the long tail in the city for parking reasons. The front windshield needs more support against folding. Also the clipons make it go faster .

GreenJoe- When making the front end keep the front fender to protect the exposed forks. Better than replacing them . How is the gearing working? 17/38 stall on take off? What do you think of putting a electric hub motor into the front wheel?

After reading the thread on how a 10,000lb+ big-rig loaded can get 15mpg @55mph, anything less than triple digit mpg values for a motorcycle is a major failure.

Last edited by hyper-miler; 09-13-2012 at 09:21 PM..
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Old 09-13-2012, 09:06 PM   #19 (permalink)
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Hyper- the 17/38 pulls decent from a stop, just lacking any pulling power in top gear with no bodywork. I didn't check before, but it now does 82.3 (gps)mph in 2nd gear. Let me know if you want a front sprocket for the Vegas challenge (barrow or buy). I'm wanting to make a 18t front just to see if it fits, but haven't yet. Here's a pic of the front fairing with the first layers of paper mache & windshield templet.
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Old 09-16-2012, 07:44 PM   #20 (permalink)
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The shape looks pretty good if the upper part covers the arms and shoulders. I use hex mesh bonded between sheets of 0.005 in plastic.

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