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Post by cat0020 on Mar 21, 2014 19:51:00 GMT -5
WED, Mar 19 2014, 40 degree F, overcast, drizzle weather, I took a 100+ mi. trip from Valley Forge, PA to Hoboken, NJ on my Chinese SuperCub clone. Mostly country backroads, last 30 miles or so was just pinning the throttle at 50 mph. due to highway traffic flow..    Other than my luggage getting blown over by cross wind and burned a hole against the exhaust, the Chinese scoot performed flawlessly, even ran through a handful of potholes at 40 mph that bottomed the suspension. :lol3 105 mi. journey, filled up twice along the way, .42 & .45 gal. each. |
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Post by cat0020 on Sept 19, 2013 16:15:03 GMT -5
No more updates for this one?
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Post by cat0020 on Sept 17, 2013 14:59:54 GMT -5
After working for bike shops for over decade, I've personally seen sealed bearing fail on numerous occasions, usually after the bearing have been submerged under water or long term abuse/ignore maintenance.
Under normal usage and conditions, sealed bearings, even the cheap Chinese made ones, are pretty durable.
Non-sealed bearings are not the same.. not nearly as durable, even with regular maintenance.
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Post by cat0020 on Sept 17, 2013 8:33:23 GMT -5
Rear sprocket carrier (no adopter) have rubber spacers and rear wheel bearings are sealed bearings... not ball bearings.
Rear axle (no axis) is solid and grease when I first took it apart when I got the scooter.
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Post by cat0020 on Sept 16, 2013 22:00:28 GMT -5
Not sure what you are talking about with the ball bearings and sprocket adapter.
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Post by cat0020 on Sept 16, 2013 17:49:57 GMT -5
Scooter took a little choke to get started, other than that, runs flawlessly.
Cooler temp in fall weather seems to make higher speed smoother running.
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Post by cat0020 on Sept 15, 2013 9:21:12 GMT -5
My scooter sat for couple of weeks while I was on a trip overseas.
Find out how it fairs in a few hours.
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Post by cat0020 on Sept 9, 2013 18:42:27 GMT -5
I just run with 87 Oct cheap fuel, low compression ratio thumper doesn't need high Oct fuel.
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Post by cat0020 on Sept 8, 2013 21:20:09 GMT -5
The 16t front sprocket was $15 w/free shipping on eBay, arrived in mail within 3 days; less than $1 a tooth.
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Post by cat0020 on Sept 8, 2013 9:48:30 GMT -5
I found going to 16t front sprocket on the exact same scooter more useful than switching out the rear sprocket.
Far more useful 1st & 3rd gear, more clearence for the chain to clear the swingarm pivot; instead of grinding the plastic swingarm pivot shield to shreads.
Still plenty of torque for passing cars and getting out of way of danger.
After putting more than few hundred miles on the 16/41 sprocket setup, I'm getting close to 122-123 mpg, with plenty of acceleration and speed to keep up with local traffics.
I weight about 160lb with full riding gear on me.
I removed about 6-8lb of stuff from the OEM scoot, changed the pilot and main jets and drilled a 1/4 below the exhaust port. Probably going to try a mechanical fuel pump to smooth out the weird fuel line routing that cause fuel starvation at wider throttle opening.
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Post by cat0020 on Sept 2, 2013 8:21:07 GMT -5
I replaced my sprockets with cheap replacement from eBay, both sprockets cost less than $25 combined, free shipping even.
Going to a 16t front allow much more use for the 1st gear, better cruise range in traffic with 3rd gear and high speed 40+mph cruising for 4th gear much less engine stress.
I also took off about 6-8lb. of items from OEM scooter, losing that weight is about the same as adding more power output to the engine.
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Post by cat0020 on Sept 2, 2013 6:37:07 GMT -5
OEM sprockets for BMS scoot is 38t rear, 14t front.
OEM sprocket combo chewed up the swingarm protecting plastic, so I went with 16/41 combo to get chain away from the swingarm.
Problem solved, higher top speed, lower engine rev, more usable 1st gear, better fuel econ.. it's all good.
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Post by cat0020 on Aug 31, 2013 16:50:19 GMT -5
BTW, I wouldn't operate this scooter much in speeds 40mph or above for sustained amount of time.
The suspension of this a scooter simply isn't designed to operate at that speed with much safety margin.
The combination of lightweight and poor suspensions, a nice bump in the road can easily send the rider/vehicle airborne, taco the wheels upon landing, send operator kissing the pavement.
After putting more than 500k miles on 2 wheeled vehicles in the last decade, I've learned valuable lesson of operating within each vehicle's designated operating parameters, not only does it keep vehicles operating properly, keeps me from breaking bones.
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Post by cat0020 on Aug 31, 2013 16:43:10 GMT -5
I have put about 850 miles on my BMC bi-metro since JUL. I used regular Rotella on the chain, just as in the engine for oil changes, lube the chain as often as oil changes. The little 110cc engine revs high and generates quite a bit of metal flakes between oil changes. Valves tend to stay well within adjustments though. The transmission still stays pretty knotchy for me, even though I downshift quite a bit when I slow down. With the sprockets changed, acceleration in 1st head and top speed have both improved from OEM gearing. Maybe this thread can be combined with my BMS scooter threadjust to keep the info about the same scooter together. |
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Post by cat0020 on Aug 24, 2013 6:53:11 GMT -5
[replyingto=prodigit]prodigit[/replyingto]I bought this scoot from a Jersey shore dealer, it has sat at the dealership for over 18 months, therefore the special low purchase price.
Top speed limiter is not the engine nor power output, it is the suspension, this vehicle is simply unsafe to operate at highway speed.
By going to smaller rear sprocket, that chan will likely rub the plastic swingarm protector raw, I wouldn't go with smaller rear sprocket.
At current setup with 16/38 sprocket ratio, the 4th gear acceleration is just about safely operable with car traffic, I could chug up a 20% gradient driveway with 2nd gear with some weight carried. That's about all I need out of this scoot.
Now with over 700 miles logged, last two fill ups, I'm getting nearly 118-122 mpg, just the 0.65 gal tank needs more frequent fill ups.
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