[NSRCA-discussion] Quick Integral Hacker install question

[Verne Koester]

Anthony,

First, the easy answer. The drive washer goes up against the snap ring. The
ring is in a groove ground into the shaft that prevents it from being pushed
back into the bearing. 

 

I use the rear former provided with the Integral which fits perfect if you
line the hole with a piece of split fuel tubing. It's tight so you'll have
to put some spit or a drop of oil to get the motor to slide through. Tight
is what you want so don't make the hole any bigger (ahem).

 

I have no idea how they expect you to use the front pieces. If you mount
them to the ply nose ring, the front of the motor will stick out too far.
OTOH, they're WAY too flimsy to use as is. I made a firewall out of 1/8"
carbon/end grain balsa that gets mounted about 5/16" behind the ply ring.
The motor itself is mounted to .089" carbon plate. The plate is screwed with
3 or 4 4-40's to the firewall thru aluminum bushed rubber grommets (similar
to servo mounting, only bigger) which greatly reduces the sound level. I
basically copied Tony Frackowiak's setup he detailed in the Electric Partner
build he wrote up in RC Universe about 5 years ago. Here's the link:
http://www.rcuniverse.com/forum/m_1425422/mpage_1/key_partner/tm.htm  Tony's
write-up and photos explain the method far better than I could explain here.

 

Good Luck!

 

Verne

 

 

 

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Anthony
Abdullah
Sent: Tuesday, July 28, 2009 9:47 PM
To: General pattern discussion
Subject: [NSRCA-discussion] Quick Integral Hacker install question

 

I am trying to install a Hacker C50 14XL Comp in an Integral and have a
couple of quick questions.

 

1. The Integral kit comes with a number of carbon fiber type mounts designed
to be used with the Hacker or similar motor setups. The design is for the
front and the rear of the motor to be supported by these formers. The rear
one is shaped like a half circle and goes around the back of the Hacker for
rear support. There are a couple different ones that could potentially be
used up front, one is a circle like a nose ring that could be used and the
other is shaped like a diamond and also fits the front of the gearbox and
would mount to the hardwood ring on the front of the fuse.

 

The question: Is either of those a "better" option for mounting the front of
the motor? It is one or the other correct? Are they made to be doubled up
and work together? I only ask because they are extremely light and I want to
make sure I have the strength up front that I need.

 

2. There is a C clip on the front of the gear box just in front of the front
bearing, Does the press fit drive washer torque down directly on that C clip
or is there something that is supposed to go between that clip and the drive
washer? I want to make sure before I get to cranking on the drive washer and
little split bushing thing and forever press it onto that clip and bind the
bearing up so it doesn't spin.

 

 

TIA for any help you can give me concerning installing the Hacker in the
Integral.

Anthony

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