[NSRCA-discussion] Hacker gearbox

Sat May 20 20:38:39 AKDT 2006

Stuart,
I'm pretty sure the setscrews are removable, but it's a moot point if you've 
got them loose. The gearbox unscrews counter clockwise like a conventional 
nut and bolt. An extra set of hands really helps with the strap wrenches. 
They can be pretty awkward as you've found out. It takes a fair amount of 
force to overcome the loctite on the threads. It also helps to have one 
person holding a strap wrench and the motor against a solid table while the 
other person unscrews the gearbox with the second strap wrench.

Verne

----- Original Message ----- 
From: "Stuart Chale" <schale at optonline.net>
To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
Sent: Sunday, May 21, 2006 12:08 AM
Subject: Re: [NSRCA-discussion] Hacker gearbox

> Still having trouble :)
> I found the set screws and loosened them.  They are not removable but can
> unscrew several turns.  Does the gearbox unscrew counter clockwise?  I may
> need a bigger strap wrench but I can't budge it.  Any other secrets?
>
> Thanks
> Stuart
>
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Verne 
> Koester
> Sent: Thursday, May 18, 2006 5:22 PM
> To: NSRCA Mailing List
> Subject: Re: [NSRCA-discussion] Hacker gearbox
>
> Stuart,
> The setscrews take a 1.5mm allen wrench. Just go from hole to hole with 
> the
> wrench until you find them. BTW, I've seen a few motors that only had one
> setscrew, but most have two as Earl pointed out.
>
> Verne Koester
>
>
> ----- Original Message ----- 
> From: "Stuart Chale" <schale at optonline.net>
> To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
> Sent: Thursday, May 18, 2006 5:14 PM
> Subject: Re: [NSRCA-discussion] Hacker gearbox
>
>
>> Thanks Earl.  I am not sure I would have thought to look for them in 
>> there
>> :)
>>
>> -----Original Message-----
>> From: nsrca-discussion-bounces at lists.nsrca.org
>> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Earl Haury
>> Sent: Thursday, May 18, 2006 4:14 PM
>> To: NSRCA Mailing List
>> Subject: Re: [NSRCA-discussion] Hacker gearbox
>>
>> Stuart
>>
>> The snap ring doesn't hold the gearbox onto the std C50 motor - it 
>> locates
>
>> /
>>
>> holds the shaft in place. The std C50 gearbox is threaded onto the motor
>> case and locked with a couple of set-screws in the bottom of two of the
>> mounting holes.
>>
>> To remove - loosen the set-screws, then use a pair of strap wrenches to
>> unthread the gearbox (hint: Wrap masking tape around the gearbox / motor
>> to
>> prevent the straps from slipping.) Assemble in reverse.
>>
>> Earl
>>
>>
>>
>> ----- Original Message ----- 
>> From: "Stuart Chale" <schale at optonline.net>
>> To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
>> Sent: Thursday, May 18, 2006 2:54 PM
>> Subject: Re: [NSRCA-discussion] Hacker gearbox
>>
>>
>>> Jim I put them on my website for download at
>>> http://www.angelsonly.com/hacker/
>>> If anyone thinks that they should not be there, please let me know.
>>> There are 3 Jpeg images that I received from Scott Anderson.
>>>
>>> The instructions are for the FAI version.  The gearbox is held in place
>>> by
>>> screws.  The standard version is held in place by a snap ring.  Does
>>> anyone
>>> know if it just pulls free after the snap ring is removed?
>>>
>>> Stuart
>>>
>>> -----Original Message-----
>>> From: nsrca-discussion-bounces at lists.nsrca.org
>>> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of J.Oddino
>>> Sent: Thursday, May 18, 2006 3:35 PM
>>> To: NSRCA Mailing List
>>> Subject: Re: [NSRCA-discussion] Hacker gearbox
>>>
>>> Is it possible to post the instructions someplace where we can all see
>>> them?
>>> I'm going to need them soon.
>>>
>>> Jim O
>>>
>>>
>>> ----- Original Message ----- 
>>> From: "Stuart Chale" <schale at optonline.net>
>>> To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
>>> Sent: Thursday, May 18, 2006 9:11 AM
>>> Subject: Re: [NSRCA-discussion] Hacker gearbox
>>>
>>>
>>>> Forwarded.
>>>>
>>>> Stuart
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: nsrca-discussion-bounces at lists.nsrca.org
>>>> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Richard
>>>> Strickland
>>>> Sent: Thursday, May 18, 2006 10:47 AM
>>>> To: 'NSRCA Mailing List'
>>>> Subject: Re: [NSRCA-discussion] Hacker gearbox
>>>>
>>>> Would you mind sending them to me also?  Hacker, for some reason 
>>>> doesn't
>>>> seem to want to send them out.  They did send me some grease-but it
>>>> seems
>>> so
>>>> light, I can't see where it would hang in for more than a few flights.
>>> I'm
>>>> tempted to use a heavier type with some 'body' to it.  Orland used the
>>> stuff
>>>> about 12 flights ago and the pinion stripped out last night-gear teeth
>>>> running around inside and trashing the rest.
>>> richard.s at allied-callaway.com
>>>> or pamrich47 at hotmail.com
>>>>
>>>> Thanks,
>>>>
>>>> Richard
>>>>
>>>>  -----Original Message-----
>>>> From: nsrca-discussion-bounces at lists.nsrca.org
>>>> [mailto:nsrca-discussion-bounces at lists.nsrca.org]  On Behalf Of Scott
>>>> Anderson
>>>> Sent: Thursday, May 18, 2006 8:10 AM
>>>> To: NSRCA Mailing List
>>>> Subject: Re: [NSRCA-discussion] Hacker gearbox
>>>>
>>>> Stuart,
>>>>
>>>> Sent you 3 pages of instructions that I got from Cameron Smith.
>>>>
>>>> Scott Anderson
>>>> D3 AVP
>>>> ----- Original Message -----
>>>> From: "Stuart Chale" <schale at optonline.net>
>>>> To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
>>>> Sent: Thursday, May 18, 2006 8:51 AM
>>>> Subject: [NSRCA-discussion] Hacker gearbox
>>>>
>>>>
>>>> >
>>>> > I know people have mentioned fairly frequent re-greasing of the
>>>> > gearbox
>>> on
>>>> > the Hacker motors.  I think the general recommendation was every 50
>>>> > flights.
>>>> >
>>>> > How do you pull apart the gearbox and what grease do you use?
>>>> > Any precautions on doing this?
>>>> >
>>>> > Picture of motor installation attached.
>>>> >
>>>> > Thanks
>>>> > Stuart
>>>> >
>>>>
>>>>
>>>>
>> --------------------------------------------------------------------------
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