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What was the power rating on those engines? I think you mentioned a gear ratio of just over 4:1, so based on the MAx RPM (you will likely reach it), what do you calculate as top speed? If you are like me, I do not think a helmit will be involved, so I wonder how long you will keep your foot in...

I have tried to simulate jumps by sanding directly ontop of just the front or rear suspension, and have done the trampoline imitation as well. I am in east Texas, not a whole lot to jump from. I will be on the look out this weekend though. Russ Barrow Russell ATV

Thanks for the tips on video capture. I will try both to see what is best (and easiet to use). Russ Barrow Russell ATV

Have you run any other mods? If so, then things like a lean mixture from not matching up the mods can kill an engine. If no mods, then watch your engine temp, and try to keep off the valves floating (5000+ RPM). Remember, this engine was designed to run all day between 3000-3600 RPM, so...

Looking at your picture, it would appear you have the centrifugal clutch connected to a friction wheel driving the rear tire. If this is the case, do you find you are eating many tires. I have a small tecumseh 2 stroke that I have connected to a bike, but even with a giant sprocket, I cannot...

Good to know. Do you have to do a premium membership or anything else to upload HD? Russ Barrow Russell ATV

At first I thought I had typo'ed video. I have not heard of Vimeo. What is this strange thing you mention? Cost, spam, or other painful things tied to it? Russ Barrow Russell ATV

A buddy and I are going to take the Karts out for some proper off roading this weekend. Perfect opportunity for some camera footage. Should have some video by next week, but I wish I could post in something with better resolution than YouTube. I typically take at least 3 vehicles out, since...

Russ, You are smartest person on the forum, but you do have an distaste for the Clone engine that is tinting your glasses for this affordable engine. I think if you played with the Clone (like a new friend) and realized its potential you would understand why it has become so popular. It is...

The data is there, you only do not want to acknowledge it. The article is about HP gains, so he chose only to note max values. As for supporting data, I would suggest you spend some time in this forum: http://karting.4cycle.com/ in the OHV section. The Box Stock class and unlimited class of...

The extra RPM means that you can use a larger drive sprocket on the wheel and get more torque and useable low end power. While the RPM will still get you to a reasonable speed. I would target a 6:1 ratio from the engine to the wheels. Most Off road buggies and Karts make around 25-35MPH, but...

They are all within 10% of each other in terms of power and torque. Reliability/quality is also very close assembler to assembler. This is because there are only 3-4 part manufacturers all working off the Honda Manufacturing prints. The assembly houses then buy the parts and put the motors...

Not sure where you see .1HP, but the data in the article is .75HP at an additional 800 RPM, governor alone. That equates to a 12% percent increase in power. Also, these results have been replicated many, many times. Russ Barrow Russell ATV

Pics

Built a camera boom to capture the suspension in action, but the boom amplified the vibration of the kart to where my Harddrive based Camera will not record. I guess I will have to live with fly by shots or get someone to spot in another kart. Recent updates on the twin engine kart: I have...

Russ, I am going to have to disagree with you on all points. As you often point out, do not post hersey, post facts. Here is a well prepared dyno results with various mods, the first being the removal of the governer. http://personalpages.tds.net/~nascarfans/TripleDouble.htm Power peaks...

For high temp, I would just get a quart of synthetic motor oil. Good temp handling and proven friction reducing results. I have not checked to see what temp the Silicon spray will go to, but you could look at the directions when at Wal-mart or hardware store. I use the silicon spray on roller...

Were abouts in the East Texas Area? I am up in the Plano area. Good to know there are more Karters around. Russ Barrow Russell ATV

The engine spark looks to be the gating factor here. That is a points engine, and I think you may have some prodblems finding parts. You may be able to move to electronic points, but have never looked into how difficult this is. Assuming it is not a pill of unusable rust inside the motor...

Stop putting WD-40 on your clutch. WD-40 is a penetrant, and a poor lubricant. If I need to clean the grease off a part, unstick a metal to metal fitting, or remove sticker residue, use WD-40. It was originally made to keep military items from rusting (water displacement), but is a great...