ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
*****************************************************************************

Hi Joe,

I'll take the metal McMaster wheels (hand grips easily substituted and/or
modified) and the fact that they are easily replaced, "off the shelf" as a
bonus!


--------------------------------------------------

Paul Orselli, President and Chief Instigator

Paul Orselli Workshop (POW!)
World Headquarters
1684 Victoria Street
Baldwin, NY  11510

(516) 223-1043

POW! website
<http://www.orselli.net>

Exhibit tips + tricks at the ExhibiTricks blog:
<http://blog.orselli.net/>


On Sat, Mar 9, 2013 at 1:29 PM, Joe Ruggiero <[log in to unmask]> wrote:

> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related
> institutions.
> ****************************************************************
> *****************
>
> Paul, my dear friend,
>
> Now we are really getting into the arcane nuances of 'exhibit building.'
> McMaster is a fabulous resource. It's my 'go to' bible for standard parts.
> My take on the McMaster handles/hand wheels is that their primary strength,
> if you can excuse the turn of a phrase, is not their strength, but that
> that are easily replaced!
>
>
> Most of those handles and hand wheels with handles are made to be used
> around people who know what they are doing. Little kids just haven't
> developed the dexterity and control that those wheels/handles are designed
> for. Another problem is that a robust McMaster handle, is usually big and
> beefy. You would think that is an attribute, but in a way, it is too much
> handle to handle
>
> So, when I decide to use a McMaster handle, I choose the most robust small
> one they have - and one that's easily replaced.  I know it's not going last
> very long, but as long as a cheap replacement is readily available, I'm
> good to go.
>
> Now, when I really need a handle to last a long time, I try to follow the
> example of bicycle pedals. They seem to have it figured out. They have real
> bearings in-board and out, and obviously, they can take some real abuse.
> But - if a bicycle pedal can't be adapted for handle use, and often they
> can't be in a particular situation, making a custom one is a real pain.
>
> Or, how about no handle at all. I'm really loving the little finger divot.
>
> Obviously, this only begins to scratch the surface of this topic. We can
> talk about all kinds of torque limiting techniques; slipping belts,  or the
> diameter of the wheel.  This topic probably deserves a listserve all it's
> own!
>
> Joe R.
> TheExhibitGuys.com
>
>
> On 3/9/2013 10:27 AM, Paul Orselli wrote:
>
>> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
>> Incorporated, a worldwide network of science museums and related
>> institutions.
>> ****************************************************************
>> *****************
>>
>> I agree with previous posters that the issue is more likely the handle
>> configuration than the generator itself.
>>
>> To that end McMaster-Carr sells nice "hand wheels" that are very robust:
>>
>> < http://www.mcmaster.com/#hand-**wheels/=lt011j<http://www.mcmaster.com/#hand-wheels/=lt011j>>
>>
>> Make sure you choose the "solid" style rather than the "spoked" style.
>>
>> Happy cranking!
>>
>>
>> ------------------------------**--------------------
>>
>> Paul Orselli, President and Chief Instigator
>>
>> Paul Orselli Workshop (POW!)
>> World Headquarters
>> 1684 Victoria Street
>> Baldwin, NY  11510
>>
>> (516) 223-1043
>>
>> POW! website
>> <http://www.orselli.net>
>>
>> www.TheExhibitGuys.com
>>
>
> ****************************************************************
> ***********
> For information about the Association of Science-Technology Centers and
> the Informal Science Education Network please visit www.astc.org.
>
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For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.

Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.

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