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Century Radikal E640 - Swift 16 NX
› Oh No Not Another Post on Acro 280BB Timing! - Don't Worry, This is New Request
04-28-2004 07:33 PM  13 years agoPost 1
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rrApprentice

Edmonton, Alberta, Canada

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Hi there,

I am trying to retime another Acro 280BB as my first one is finally on it's last legs. The problem that I have is that the multimeter I have will only take up to 200mA whereas i think the Acro draws about 0.85A so I can't use it to properly retime the motor.

What I would really appreciate if someone who has retimed their Acro properly (the first one I retimed by simply rotating the end cap a little each time I flew until I got the best performance, but it took a whole weekend) could send me a picture of it showing the amount of clockwise rotation on the end cap - I can then simply rotate my end cap by the same amount and have a reasonably accurately re-timed motor.

Any help would be appreciated.

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04-29-2004 03:41 AM  13 years agoPost 2
Yukonho

rrApprentice

Montreal, Quebec, Canada

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I have an article on this on my website. There are pictures that go along with it there. (not the clearest, but you will get the idea anyway.
http://www.like90.com go to "instructions" and download the PDF and the pictures will show up. The total movement is less than 1/4"
co

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04-29-2004 05:25 PM  13 years agoPost 3
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rrApprentice

Edmonton, Alberta, Canada

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Yukonho,

Thank you for the response. It's funny that you decided to respond to this thread since the reason I am retiming the motor is to try and get it to work well with your blades. I think you blades provide excellent control but my flight times and rate of climb are now pretty poor. I use 2 cell 1200 E-Tecs and my flight times have gone from about 12 to 13 minutes using an Acro, 10T pinion and stock blades (DD tail motor) to about 7 minutes with an Acro, 12T pinion and your blades.

I had already downloaded the PDF from your site previously but was unable to see the degree of rotation of the end cap as the pictures were pretty fuzzy.

What would really help me out would be if you could:

1) Post a clear picture of the retimed Acro showing the degree of rotation of the end cap - if you can get a picture of side of the motor where the original crimps were located, I will have a reference point it will make it very easy for me to replicate the same degree of rotation.
2) Let me know what size pinion you have had the most luck with when used with the retimed Acro, I have tried a 9T, 10T, 12T and 13T - right now the 12T is giving me the best performance (but still only 7 minutes).

I would really appreciate your help since, if I can't get these flight times up with you blades, I'll probably have to go back to the stock blades since the flight times and rate of climb are so much better (but control and FFF really suck).

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Century Radikal E640 - Swift 16 NX
› Oh No Not Another Post on Acro 280BB Timing! - Don't Worry, This is New Request
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