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Finless Bob's Helifreak Tech Room Finless Bob's Helifreak Tech Room - Tips and how-To Videos


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Old 05-20-2008, 09:04 PM   #21 (permalink)
 

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If you dont see it it does not have to be perfect
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Old 05-20-2008, 09:07 PM   #22 (permalink)
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Step 1 posted!

Enjoy!

Bob
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Old 05-20-2008, 09:09 PM   #23 (permalink)
 

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Sweet!
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Old 05-20-2008, 09:32 PM   #24 (permalink)
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When working on two new 90s, time is irrelevant.
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Old 05-20-2008, 09:33 PM   #25 (permalink)
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Quote:
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When working on two new 90s, time is irrelevant.
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Old 05-20-2008, 10:01 PM   #26 (permalink)
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Quote:
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When working on two new 90s, time is irrelevant.
Every time I am waiting for Bob to post these "new bird" build videos time always seems to stop.................
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Old 05-20-2008, 10:46 PM   #27 (permalink)
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Quote:
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When working on two new 90s, time is irrelevant.
DUDE.... THAT is a crack up!
I had no idea my watch was in crono mode!
You guys DON'T miss a trick do ya

Bob
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Old 05-20-2008, 11:21 PM   #28 (permalink)
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Glad iam not the only one who noticed the 0:00:00 on the watch ... capis not crazy YEAH not crazy at all !
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Old 05-20-2008, 11:31 PM   #29 (permalink)
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Should have hit the Start button... and don't stop it until it's done.
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Old 05-21-2008, 12:43 AM   #30 (permalink)
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Which one is better Bob? The T-700 or the Aurora? hehehe...jk.
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Old 05-21-2008, 04:05 AM   #31 (permalink)
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Step 2, Bag 2 posted!

Enjoy

Bob
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Old 05-21-2008, 04:08 AM   #32 (permalink)
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Quote:
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Step 2, Bag 2 posted!

Enjoy

Bob
I'm gonna stay up with you tonight hehe.

Thanks for the great work Bob!
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Old 05-21-2008, 04:17 AM   #33 (permalink)
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Yea..... it's been a "long" day Long

Bob
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Old 05-21-2008, 10:00 AM   #34 (permalink)
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It looks like it might be difficult to take out that mainshaft. From what I can see, it looks like you would have to get a screw driver between the frames to undo that setscrew holding the pin. Anyone know for sure?
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Old 05-21-2008, 10:20 AM   #35 (permalink)
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Video #2... "OH, AH... Holy Batman Autorotation!!"
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Old 05-21-2008, 10:29 AM   #36 (permalink)
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Bob, we need a picture of your workshop with two 90s in it!!
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Old 05-21-2008, 12:59 PM   #37 (permalink)
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Quote:
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Yea..... it's been a "long" day Long

Bob
Bob you wake up yet? I felt asleep while waiting for step #3.

By any chance, could you please tell me how many teeth do the pinion and the maingear have? What module too? It looks like the Aurora runs on 8.27:1 ratio so we possibly cannot get the YS91SR run at 1950 headspeed. I'm gonna make some custom maingears and pinions then...hehe.
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Old 05-21-2008, 04:51 PM   #38 (permalink)
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The gear ratio is 8.25. The pinion is 12T. I don't know the tooth count on the main gear but with that you can figure it out
OK I did... it's 99

Bob
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Old 05-21-2008, 05:30 PM   #39 (permalink)
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Quote:
Originally Posted by Long Nguyen K. View Post
Bob you wake up yet? I felt asleep while waiting for step #3.

By any chance, could you please tell me how many teeth do the pinion and the maingear have? What module too? It looks like the Aurora runs on 8.27:1 ratio so we possibly cannot get the YS91SR run at 1950 headspeed. I'm gonna make some custom maingears and pinions then...hehe.
I think that the YS91SR is OK at 1950rpm with a 8.25 ratio which means 16088rpm on the engine side...
The Yamada operating manual states that the engine is OK until 17000rpm so... :-)
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Old 05-21-2008, 06:08 PM   #40 (permalink)
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Long-

We are running 1850, and 1900. Both headspeeds are awesome, I dont think there is anymore need for a higher headspeed. The YS's sweet spot seems to be around 15300 rpm.
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