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Topics - Demps

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Technical | How To / Roller weight to slider weight conversion

« on: June 09, 2013, 02:41:14 AM »

Looked allover the internet and getting lots of conflicting info. If I switch from standard roller weights to Dr Pulley slider weights should I increase, decrease, or keep the same weight as the stock 8.5 grams? I am running a derestricted 2005 zx 50 with no other mods. I would like to increase the top speed if possible but don't want to loose acceleration. Also, the rollers that are in there now have worn some flat spots in them, is that normal or is it a sign of a problem. Thanks

zx50 / Mods to get 5mph

« on: May 30, 2013, 02:27:52 AM »

Recently bought a 2005 zx 50 with 7300km on it. It runs 47mph on the speedo(42 on gps). Confirmed that the CDI has been spliced not sure what else has been done. Checked the pipe and didn't see anything that looked like a restiction. Not sure about the variator washer. The guy I bought it from was the original owner and definitely didn't do any work himself. Carb is clean, battery and plug are about 3 months old. With gear I weigh at max 150 lbs.

So, I would like to get another 5 mph out of the scoot to keep the idiots from breathing down my neck in the 45 mph speed zones. The main reason I bought the bike was for commutes to work in the historic district so I could save on gas and parking so it needs to be reliable. Also don't want to spend more than $50. I'm a little nervous about shaving the boss down and don't have a bench grinder. Can it be done with an angle grinder, belt sander, or dremel? If I screw it up how much is a new one? Thanks in advance.

zx50 / New owner needs help

« on: May 28, 2013, 02:34:47 AM »

First off thanks for all the help I've found just reading this forum. I bought a 2005 zx 50 about a week ago, seemed to be running fine at first. Then after coming over a high bridge the engine bogged down. I was able to drive a short distance farther to a gas station. After that it starts fine and idles ok but stalls when I give it gas.

Also, how do I know if I am restricted? Bike registers 47 mph on the speedo but 42.5 on gps. Would like to get 5 more mph out of it to keep up wih traffic where I live. Any help is appreciated.