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Old 06-17-2008, 06:49 PM   #1
Mercuriell
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Default Bobby Watts Special Stratus Build

Those of you (if there are any!) who don't peruse Bob's tech room may be interested to know we've posted build videos on the new Bobby Watts version of the Stratus. Sections on the fan balancing and dial out may be of interest to other heli builders.




MA Stratus 'Bobby Watts Special' Build videos:

What's in the Box 27 MB wmv

Mounting the Fan 29 MB wmv

Fan removal and dialing in the hub 32MB wmv

Engine and Landing Gear mounting 23MB wmv

Fuel tank and fan shroud - completion lower frame half - 27MB wmv

Left upper frame assembly - 27MB wmv

Gear and clutch assembly - 45MB wmv

Final frame assembly - 32MB wmv

Swash and Servo install - 32MB wmv

Fitting Fan Shroud, Stiffeners and Canopy mods - 25MB wmv

Rotor Head and Main Grips - 50MB wmv :glasses2:

Fixing Rotor Head on Heli and Frame Electrics - 20MBwmv

Tail Rotor Assembly - 46MB wmv

Final assembly - 33MB wmv

Maiden Flight - 9MB wmv


Repair and maintenance as they crop up !

Seesaw repair - 15MB wmv
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Old 06-20-2008, 02:43 PM   #2
Knud Pedersen DENMARK
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Hi John

Great videos.
must have taking alot of time.

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Old 06-22-2008, 03:24 PM   #3
Knud Pedersen DENMARK
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hi,

I was wondering how many drill up the hole in the upper Collet?
And is it also necessary for the YS91SR?

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Old 06-23-2008, 03:11 AM   #4
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Good question! - I feel that the OS shaft may be slight bigger on the later versions of the SZ - I really couldn't make ANY adjustments with it tight - as for the YS - I have no idea
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Old 06-23-2008, 01:38 PM   #5
Knud Pedersen DENMARK
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Hi John,

I will unmount my fan on my YS91SR
I'll let you know the size of the collets and the cranckshaft thread.

PS:
is it best the measure the dial out/alignment, on the top on on the side of the fan?

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Old 06-23-2008, 01:48 PM   #6
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I think its best to do it on the inside. A maryland fan would be even better.
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Old 06-23-2008, 06:20 PM   #7
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Thanks for these vids, I have picked up some great pointers. Really appreciated!
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Old 06-24-2008, 04:26 AM   #8
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Quote:
Originally Posted by Knud Pedersen DENMARK View Post
Is it best the measure the dial out/alignment, on the top on on the side of the fan?
ChopperKnud
I don't think it matters - run out is run out - the inside of the hub, the outside of the hub or the hub face will all reflect lack of centering - it depends a bit on your dial gauge - mine had a plunger which worked best against the face of the hub - some of the lever dial gauges might work better inside the hub. I found the face of the hub to be smoother - there was a little bit of irregularity around the margin of the hub - which hadn't been machined - which made consistent dial readings difficult.

I think both YS and OS shafts are 8mm but the taps are imperial (5/16x28) on the OS and metric (8mmx1) on the YS". It seems the position of the start of the tap from the front bearing that is critical and slightly longer in the YS.
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Old 06-25-2008, 06:30 AM   #9
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Great vids! Please keep up the good work. Looking forward to seeing the finished product.
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Old 10-11-2008, 07:05 PM   #10
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is the high ratio stratus on the MA site the bobby watts special version? thanks in advance.

http://www.miniatureaircraftusa.com/...rod=1026%2D2BW
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Old 10-11-2008, 09:00 PM   #11
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Not sure - think it might be the regular Startus with gearing for the YS engine - the MA site not always the easiest to navigate - check out Ron's Heliproz - he lists it
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Old 10-11-2008, 09:56 PM   #12
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thanks for the link
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Old 10-13-2008, 02:54 PM   #13
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Did you replace anything on the heli yet?
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Old 10-13-2008, 11:35 PM   #14
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are you asking me? I was just looking at the entire kit, I was thinking about buying a stratus, but I don't have an older one I am looking to convert to a BW stratus
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Old 10-14-2008, 04:51 AM   #15
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It's a great kit and strong as nails - did a bad dumb thumb in rotor first doing funnels too low in bad light and aprt from the usual bent shaft and popped links there's very little damage - did the mother of all chicken dances due to the radio getting popped but even so the T700 flyers were amazed at no frame or gear damage.
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Old 03-05-2009, 06:15 PM   #16
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Default stratus 90 help!

if you can give me tips on setting up my bird? radio gear is all futaba dig. servos 2.4ghz rec. multigov ver.1! please help me set this up! my radio is a futaba t9chp! i need all the help i can get! there are nobody here at these flying fields that know too much about these aircrafts! it would be greatfully appreciated! thank you markus d. debose!
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Old 03-06-2009, 08:09 AM   #17
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What do you want to know? Building and setting it up is pretty straightforward.
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Old 03-06-2009, 08:18 AM   #18
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MA is out of Sorrento, FL. How far is Clearwater, FL from Sorrento, FL? I would love to visit MA in Sorrento one day.
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Old 08-14-2010, 11:14 AM   #19
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John, With the help of your vid's, I just finished my BW Stratus build. Well done my friend, and a huge help as the instructions included in the kit aren't the best. Now its time for final set up of the head and flybar and then the break in. Thanks again for a great job on the vid's...
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