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The ty80 can be made to fit with custom peg mounts, taller bars. We actually have a ty80 class in our vintage series. This is my 6 foot 4 inch tall boy.
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Since this was re-kindled, the FIM has two more rules coming. Face guards and they have to be approved and back protection. Before long we will have air bags.
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Blowing air through a Keihin can kill it. Who ever originally thought blowing compressed air through small passageways was helpful was an idiot. Now everyone thinks this is normal. I hope you find you have done something else and it again runs great. Otherwise there is hope. There is a tower inside the body that can be removed. It`s held in place with security screws. This allows further access to the other passages. Trouble is you cannot buy the o ring type seal that seals the tower, so be careful. Good luck.
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Are you sure it is not the 80?
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That is like going backwards. Would need new manifold and air box boot. Throttle cable too.
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Most likely the suspension is sacked out.
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If it will not run unless the choke is on, the first thing would be a good carb clean. Secondly you need to check the fluid flows from the petcock and that the tank is actually clean inside.
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Bent rotor, loose front axle, air in the system.
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Or a poor way of explaining a real burnt clutch.
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16 plug
15 ignition coil
13 voltage regulator
12 generator
11 ignition unit
10 fan control
9 thermometric switch
8 fan
3 connectors
1-7 just lights
14 lights power supply
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Sure it does increase flow, but they have had bikes suffering vapor lock for no apparent reason. I would guess this is a remedy for those few cases.
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You will get more response posting in the Aprilia section.
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Seal the inside with epoxy and Jb weld the outside, sand and paint. Twenty bucks and two hours work.
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You all are thinking two stroke problems. This whole thing is probably the fuel pump/vacuum lines issue along with vapor lock from a hot motor. Damn Sherco with the remote tank anyways. I was sure happy the day we sold my boys 2012.
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Could be something simple like the detent for the shift drum, missing, loose or broken spring. I would not even worry about the case. A sight glass is not needed.
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I love that Pro keeps a going. Probably has some of the most hours of any Pro. Keep making it better zippy.
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I gave you specs for what we ran at the nationals. Which is your elevation.
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What jets have you tried. I told you what we used at the Nationals. Did you get a fuel screw or did Ron install it when new?
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You could also shift to second more often. With the 11 it runs good, but makes 2nd not as useable. I tried the 11 this last week as I am searching for just the right combo myself. Trouble is we ride tight very large steep rocks at high elevation. (Thirty feet tall plus) I know completely different terrain, but I also just switched from a Gasser. The Beta first gear has always been too low. Good luck.
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http://www.r2wtrials.co.uk/html_files/betacarbsetup.html
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The easiest fix is the Billy T carb mod. Someone will come along and give you a link.
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More info for better answers. Why you want to change it. Where are you riding. Is first too fast for you, which I doubt as the Beta first is pretty low. On the rev 3`s I always ran a 10 and rode mainly in second gear with a lot of clutch work.
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http://www.electrexworld.co.uk/acatalog/Online_Catalogue_Pick_up_Coils_160.html
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