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I (Konrad) believe I can get an absolute tune with my small 3.3 cc nitro engine. My guess is that the top rpm with that 3.3 cc engine will be higher and more consistent.
Here are some findings of tests done with my new Boca Bearings ceramic bearings.
I've collect a quick 59 miles per hour speed run at around 7 seconds. Besides the fact that the bearings take a brutal beating at 30,000 rpm and temperatures are close to 300 degrees Fahrenheit, they spin effortlessly. These bearings are so smooth and perfect -- it could be felt just by spinning them in my hands.
A typical clutch engagement happens at 15,000 rpm as data indicates. That type of spin-up would destroy typical bearings quickly from my past experience. The best advantage being the bearings arrived without lubrication. Oil in the clutch bell is a sure way to cause slip between the plastic-carbon clutch pads and the steel clutch bell housing. This was the case with the new stock bearings purchased. A quick test of the newly installed Boca bearings was to spin the clutch bell by hand. It was so outrageously smooth that the clutch bell it seemed it would not stop spinning. It was at least 3 times longer than the stock bearings.
In the two graphs of data shown below, capture a simple comparison between stock and the new ceramic Boca Bearings. Note the green rpm graph line which indicates the initial engagement of the clutch. It is not as erratic, rather smoother and more consistent with the new ceramic bearings.
From what I am seeing, besides the durability, and seal superiority, there is high probability we will be seeing data with speed improvements with further ceramic bearing replacements.
Konrad is a technician with specialized training in tele metric data acquisitions -- currently collect rpm, and GPS data every 11ms and process them through a customized VBA macro in excel.
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