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Home✈️Aircraft🚁HelicopterMiniature Aircraft Whiplash & Fury 55 › 90 in X-Cell 60 Pro Graphite?
09-06-2006 06:25 AM  14 years ago
New Jedi

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Chicago

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Tks KTC ...
if i changed gear ratio to 8.45 do i need to stretch the tail to 33 inch..?
freedom flying
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09-06-2006 05:11 PM  14 years ago
KCT

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Ontario, Canada

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New Jedi,

not neccessarely, you could still run 690 Mains and 105 tails while
pulling insane pitch

Cheers

Kay

That's not flying, that's crashing with style...

TeamBob00, WildCat, Helitron,
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09-07-2006 10:43 AM  14 years ago
New Jedi

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Chicago

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tks a bunch guys....freedom flying
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09-07-2006 08:32 PM  14 years ago
kjkelly

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Austin, TX

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Tim @ MA says....
The problem I ran into putting the YS91 into the XCell SE was the motor mount. The proper one which moves the motor forward 3mm to accomodate the larger main gear, etc. is no longer available.

Many of you offered ideas involving milling the existing mount and I am gratefull for the help. Gordie suggested (wisely) a call to Tim at Miniature to determine the appropriate amount to mill of the mount.

First, I love that he is so available. He suggested however, that I not mill the mount, but instead slot the frames. He suggested dremeling a perpendicular slot forward once you have determined the height the motor needs to be. His concern with milling the mount is that you potentially bottom out the bolt after removing 3mm of thread area, which I can understand. His only caveat to the slotting was to make sure to use a wide, thick washer to spread the load against the carbon fiber on the outside. I use the cosmetic shiny washers already so that's covered.

Just thought you other 91 converter's would like to know
"Great ideas will always encounter violent opposition from mediocre minds"
Einstein
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09-07-2006 08:58 PM  14 years ago
GM1

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Tallahassee, Florida US

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HeeHee
Dang, makes me glad I suggested calling instead of doing what I was thinking. I have a drill and bottom tap so I could extend the depth of the holes if needed but slotting sure sounds easier.
Gordie
On a dog sled team, if you're not the lead dog, the view never changes.
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09-13-2006 02:57 AM  14 years ago
KCT

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Ontario, Canada

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Hi guys,


kjkelly and Gordie well as much as I would appreciate the friendly advise of
the manufaturer I would not enlarge the slottet holes in the lower frames. I happend to buy Chris S. old SE which had enlarged holes
in the lower frames for 'some' reason. These frames were not meeting
my personal quality requirements and were disposed of.
I went the way I described with milling the engine mount as stated
not to do. It works great for me. I did not run into any issues
with bottoming out the bolts.
Enlarging the lower frame slottet holes seems a bit to cheesy to me.
Besides dremeling the CF and potentially breathing the CF dust is not
really healthy... and converting an otherwise fine material into some handycraft work comparable to some high tech junk. Don't do this to a beautiful piece of CF.
I had mentioned to MA similar well over sized holes in the front frame
stiffner (586) if I am not mistaken, which also does not meet my
expectation of quality. It may seem standart practice at MA to make things fit by having larger than neccessary holes. Eventually after complaining and returning the part for exchange, I found a new part was shipped to me with the same sort of 'manufacturing defect'. After re-evaluating my shipping expenses were more than the part was worth, I went to a local machine shop and had the part machined with the correct size holes.
Reason for my complain was not only looking at a part and comparing it's holes with swiss cheese but also been unable to find washers big enough to cover up these ugly holes, set me off.
I see with sadness how some of the MA parts seem to be horsed through
the manufacturing process (perhaps to totally maximize profit) yet
quality (and/or sufficient quality control for that matter) seems severly lacking.
Were I expect to see 3.0 mm holes and find 1/8th were drilled, perhaps out of convinience...

Please forgive me, but this is discusting !!!

MA could easily rule the 'world' with there fine products if they would only go ALL the way, and not cut any corners in favor of profit.

Sorry, I went off topic, but I needed to vent....

But here are some pictures of my Mod.

Cheers

Kay

That's not flying, that's crashing with style...

TeamBob00, WildCat, Helitron,
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