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EZR's Full Suspension Summer Project


Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle Contest forum. I just got back from a 25+ mile ride around town and the bike seems to be a screamer at ...
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  #41 (permalink)  
Old 07-02-2008, 12:54 AM
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Default Re: EZR's Full Suspension Summer Project

I just got back from a 25+ mile ride around town and the bike seems to be a screamer at top speed. The 47 tooth sprocket still gives her good low and mid but top speed is a little fast (around mid to high 40's.) I'm having Andrew make me a 52 for around the town use and a 58 for racing. Tommarrow I'll take picture of the bike when I get home from work. I have no regrets on picking the 5.8hp. It's a little louder than the 3 hp but still quiet enough for the neighborhood.
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  #42 (permalink)  
Old 07-02-2008, 01:33 AM
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Default Re: EZR's Full Suspension Summer Project

I was wondering how the rear suspension was going to work out. I was thinking that you would need to run a jackshaft down to the pivot point and then back to the rear, I know that if you are below or above the pivot the chain changes tension. I know you will figure a way to solve it, we've seen all the fine work you have put out. You may be able to put a sprocket on the pedal shaft on a bearing so not to interfere with the pedals, that would be another way to get in line. Have fun, Dave
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Old 07-02-2008, 01:50 AM
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Default Re: EZR's Full Suspension Summer Project

I wasn't too disappointed with the fact that it didn't work. Dean at Pipelyne/SCSW wanted to hack up the frame to make it work but I told him that I really liked the bike as a bicycle w/o the motor. That's only one of the reasons he didn't do it. The 2nd reason is Dean will be making Chrome moly full suspension frames for these motors real soon.
So when the SCSW frames are in production...I'll be one of the first people to own one and you guys will be the first to see it here on this forum. I'll keep everyone posted on the new frame but for now...I'm going to enjoy the power of my new bike!
As for the jackshaft idea, I think it would work perfectly on a chinese motor. The torque of this motor would snap a regular bike chain. After the top speed I reached today, the last thing I need is flying off of a bicycle at 40+mph. I'm too old to be playing real life stuntman extreme...! haha
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Old 07-02-2008, 03:52 PM
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Default Re: EZR's bicycle finally finished





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  #45 (permalink)  
Old 07-02-2008, 03:57 PM
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Default Re: EZR's Full Suspension Summer Project





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Old 07-02-2008, 04:19 PM
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Default Re: EZR's Full Suspension Summer Project

nice ride you have!!!
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  #47 (permalink)  
Old 07-02-2008, 04:28 PM
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Default Re: EZR's Full Suspension Summer Project

Thanks John! Dean told me you guys had a great time on Friday's cruise around Santa Cruz.
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Old 07-02-2008, 04:45 PM
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Default Re: EZR's Full Suspension Summer Project

we had too much fun
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Old 07-03-2008, 12:22 AM
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Default Re: EZR's Full Suspension Summer Project

I wish there was a way to get one of the China companies to cast a cylinder with some fins on it, these little happy engines need some cooling. Your little 50 has 4 times the cooling the 70cc China has. I can feel quite a difference as the engine goes through the temperature range, Cold no power, Just warm power, getting hot power goes away. Years ago we were running a 500 Suzuki at the drags, in the morning it was cool we could beat everything, but as the day wore on and we got through the eliminations the evening was hotter and we gave up HP and the win. 2 Smokes like to be cool to make Power. Have fun, Dave

PS: What did you do with the China engine with the reed block on it? I always wanted to see it run. I wish you lived closer I would like to do the mods for you, I think you would like it.
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Last edited by Egor : 07-03-2008 at 12:26 AM.
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Old 07-03-2008, 12:34 AM
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Default Re: EZR's Full Suspension Summer Project

It's kinda funny because when I first seen the motor, I said to myself: Holy Smokes that motor looks about as big as a 125cc! The 3hp hp is probably the perfect motor for bicycles. They are thinner than mine and since the cylinder is cast iron, the motor is unbelievably quiet. I rode the 3 hp bicycle the other day and was pleasantly surprised how fast it was and the power band was smooth.
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