KR> Grove gear question

[Ron Smith]

There is a certain amount of camber angle to the gear to compensate for a/c 
weight. Does anybody have the camber angle in degrees?
I'm thinking of trying to make some fiberglass maingear and I'd like a starting 
point for that angle if anyone can help.

I'll make the gear, post some pics and test the gear for strength, and give you 
guys the results and how much it costs.

Any tips would be appreciated.

KR> Grove gear question

[Matthew Elder]

Having just made my own 'glass gear, I can tell you
this...  It's a tedious process :-)  The camber angle
is based on how much deflection of the gear leg at
what weight, so the answer is "it depends".

My legs are 25.5 inches long (hyp dim) at a 45deg
angle.  I ended up with a calculated angle of 2deg
camber sized for the length of the leg, the angle, and
the ramp weight of 830 lbs (KR-1).

Initial testing shows that it's just about right on,
but that's for my instance.  I have about $160 in
mine.  There aren't a lot of details on my website
just yet, but I'll get some more up there one day. 
Hope this helps.

Matt


--- Ron Smith  wrote:

> There is a certain amount of camber angle to the
> gear to compensate for a/c weight. Does anybody have
> the camber angle in degrees?
> I'm thinking of trying to make some fiberglass
> maingear and I'd like a starting point for that
> angle if anyone can help.
>  
> I'll make the gear, post some pics and test the gear
> for strength, and give you guys the results and how
> much it costs.
>  
> Any tips would be appreciated.
> 
> ___
> Search the KRnet Archives at
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> 


-
Matthew Elder
Orangeburg, SC 
http://www.infinigral.com/melder

My Airplane Project:
http://www.infinigral.com/melder/flying/KR1/

KR> Grove gear question

[Ron Smith]

Matthew Elder  wrote:
Having just made my own 'glass gear, I can tell you
this... It's a tedious process :-) The camber angle
is based on how much deflection of the gear leg at
what weight, so the answer is "it depends".

My legs are 25.5 inches long (hyp dim) at a 45deg
angle. I ended up with a calculated angle of 2deg
camber sized for the length of the leg, the angle, and
the ramp weight of 830 lbs (KR-1).

Initial testing shows that it's just about right on,
but that's for my instance. I have about $160 in
mine. There aren't a lot of details on my website
just yet, but I'll get some more up there one day. 
Hope this helps.

Matt


--- Ron Smith wrote:

Thanks Matt,



I was thinking it would be about 3 degrees. I will have to shim it anyway, I'm 
sure. 



How is the "glass panel" going?



Ron Smith
Kr2ssxl
Cypress Ca U.S.A.
mercedesm...@yahoo.com
http://ronsmith.myphotoalbum.com/albums.php

KR> Grove gear question

[Ron Smith]

Matthew Elder  wrote: 
Having just made my own 'glass gear, I can tell you
this... It's a tedious process :-) The camber angle
is based on how much deflection of the gear leg at
what weight, so the answer is "it depends".

My legs are 25.5 inches long (hyp dim) at a 45deg
angle. I ended up with a calculated angle of 2deg
camber sized for the length of the leg, the angle, and
the ramp weight of 830 lbs (KR-1).

Initial testing shows that it's just about right on,
but that's for my instance. I have about $160 in
mine. There aren't a lot of details on my website
just yet, but I'll get some more up there one day. 
Hope this helps.

Matt


--- Ron Smith wrote:

I forgot to ask. How many layers of fiberglass, uni? Carbon? eglass? sglass?



Hope you don't mind all the questions :)




Ron Smith
Kr2ssxl
Cypress Ca U.S.A.
mercedesm...@yahoo.com
http://ronsmith.myphotoalbum.com/albums.php

KR> Grove gear question

[Matthew Elder]

Hrmm... Well something like 40 layers of
unidirectional (15 oz) and 12 or so layers of tri-ply
woven (22 oz).  I don't have my sketch in front of me
here at work, so I don't remember for sure.

They are an inch think at the mount locations on the
spars, and taper down to about .7" at the wheel end.  

Matt




--- Ron Smith  wrote:
> I forgot to ask. How many layers of fiberglass, uni?
> Carbon? eglass? sglass?
> 
>  
> 
> Hope you don't mind all the questions :)
> 



-
Matthew Elder
Orangeburg, SC 
http://www.infinigral.com/melder

My Airplane Project:
http://www.infinigral.com/melder/flying/KR1/