Today's Message Index:
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1. 04:58 AM - Re: Re: 912 UL vibration (FLYaDIVE)
2. 07:44 AM - Re: 912 UL vibration (Roger Lee)
3. 05:07 PM - Re: Re: 912 UL vibration (FLYaDIVE)
4. 07:34 PM - Re: Re: 912 UL vibration (Sacha)
Message 1
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| Subject: | Re: 912 UL vibration |
Roger:
A friend of mine has a Rotax and a three blade prop (pusher). I do Dynamic
Balancing on Lycoming and Continental engines. I would like to do dynamic
balancing for him BUT, since there is not a ring-gear where would I place
the weights?
Barry
On Fri, Oct 12, 2012 at 10:16 PM, Roger Lee <ssadiver1@yahoo.com> wrote:
>
> No blades should ever be swapped from a set. These are usually picked for
> For their weight And balanced together with that hub. If you do try and
> mix blades then they have to be balanced.
>
> --------
> Roger Lee
> Tucson, Az.
> Light Sport Repairman - Maintenance Rated
> Rotax Repair Center - Heavy Maint. Rated
> Home 520-574-1080 TRY HOME FIRST
> Cell 520-349-7056
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=385228#385228
>
>
Message 2
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| Subject: | Re: 912 UL vibration |
Hi Barry,
Unfortunately there are many different prop mounts that people use on their planes.
Some have backing plates and spinners, prop hub extensions, ext...
If they don't have a backing plate then you may be stuck with putting a large washer
on one of the prop mounting bolts. If you do that it could take a little
more weight because it is closer to the center of mass. Or you could get him
to put a backing plate and spinner on his plane and would benefit from better
air flow and the balance. With the backing plate you can then move the weight
out farther from the center.
Just so many of you know as a tidbit fact. It is more important and affects the
flow of air to have a spinner on a pusher over a tractor prop. The air flow is
affected more and in a positive way.
Which is funny because we seem to always put spinners on tractor props.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center - Heavy Maint. Rated
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=385246#385246
Message 3
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| Subject: | Re: 912 UL vibration |
Roger:
Would you recommend a Rear bulkhead and Spinner combination for a Ryan S12.
It currently has a skullcap but I remember reading a lot about Long EZ
types with fancy spinners that improved cooling and added a bit of speed.
Barry
On Sat, Oct 13, 2012 at 10:43 AM, Roger Lee <ssadiver1@yahoo.com> wrote:
>
> Hi Barry,
>
> Unfortunately there are many different prop mounts that people use on
> their planes. Some have backing plates and spinners, prop hub extensions,
> ext...
> If they don't have a backing plate then you may be stuck with putting a
> large washer on one of the prop mounting bolts. If you do that it could
> take a little more weight because it is closer to the center of mass. Or
> you could get him to put a backing plate and spinner on his plane and would
> benefit from better air flow and the balance. With the backing plate you
> can then move the weight out farther from the center.
> Just so many of you know as a tidbit fact. It is more important and
> affects the flow of air to have a spinner on a pusher over a tractor prop.
> The air flow is affected more and in a positive way.
> Which is funny because we seem to always put spinners on tractor props.
>
> --------
> Roger Lee
> Tucson, Az.
> Light Sport Repairman - Maintenance Rated
> Rotax Repair Center - Heavy Maint. Rated
> Home 520-574-1080 TRY HOME FIRST
> Cell 520-349-7056
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=385246#385246
>
>
Message 4
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| Subject: | Re: 912 UL vibration |
Thank you Roger
Is the balancing you refer to a DIY job or does it require specialized equipment?
Sacha
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