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Date: Thu, 11 Dec 2008 21:51:29 -0500
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From: "Bill Wade" <super_chipmunk@roadrunner.com>
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Subject: Re: [LML] IV Main Gear Setup- lessons learned/ Correction
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  At some point between my workshop and my laptop I got mixed up. The LH 
rack sets up fine, the RH is the one that had the grease groove exposed at 
the end. I apologize if this created any confusion. -Bill Wade

----- Original Message ----- 
From: "Bill Wade" <super_chipmunk@roadrunner.com>
To: <lml@lancaironline.net>
Sent: Monday, December 08, 2008 1:55 PM
Subject: [LML] IV Main Gear Setup- lessons learned


> This may save someone a few days:
>
> While I had the main gear box out of the fuselage and clamped upright I
> went to install the grease blocks. I found the second set of holes that
> Lancair had drilled made the blocks extend beyond the rack housing so I
> opened out the original, centered holes. That worked fine with the RH 
> rack.
> Trimming 1/8" off the end of the rack and using a bottom tap in the hole
> made for a good fit with room to install the down switch striker plate.
>
>  After loosening/tightening the cylinder plugs and mopping up oil spills
> each time I moved the piston I skipped way ahead to page 26-35 and 
> installed
> the fittings. Connecting the fittings together with temporary tubing
> assemblies allows the cylinders to move freely with no mess and no dirt
> getting in.
>
> The LH was a different story. The grease block hit on the thickened 
> section
> (where the cylinder ram attaches) before the gear was fully retracted. If
> the block was repositioned forward in the 'new' holes so there was no
> interference then it extended beyond the rack far enough to expose the
> grease groove. This meant that when the fitting was greased it would all
> escape instead of spreading evenly as intended. I could not come up with a
> good fix for this. As far as I can tell the pinion gear is indexed 1/2 
> tooth
> different from the RH side in relation to the leg. The gear is not
> reversible. After a lot of trimming, fiddling and fussing the best I can
> come up with is to roughen a short section of the groove and fill it with 
> JB
> Weld. The stuff can be trimmed level with a razor blade after it sets. The
> plugged section extends under the end of rack when the gear is fully down.
> I'm open for other solutions.
>
>  I also installed the strikers and microswitches (19-123). I think using a
> VOM audio signal or light circuit gives a more positive contact indication
> than a "Click", but that's just me.
>
>  As far as I can tell the instructions don't mention this- I was told by
> tech support that the rack housing through bolts are tightened so the
> sleeves push against the grease block and lock it into place. The block is
> supposed to be wider than the rack for clearance. It's not. I'm going to
> make a shim from .010 brass or stainless and bond it to one side of each
> grease block. Maybe with crazy glue- it only needs to hold until the 
> screws
> are tightened.
>
>  My admiration grows for those who have managed to complete their
> lanes...  -Bill Wade
>


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