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  #1  
Old 01-24-2006, 09:56 PM
N130WN's Avatar
N130WN N130WN is online now
 
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Location: 8A7 (NC)
Posts: 313
Question Tailwheel Upgrade

In the quest more better TW clearance, I'm considering changing out my tailwheel to a homebuilder's special #6126

http://www.aircraftspruce.com/catalo..._tailwheel.php

or the Bell Special when they are available

http://www.vansairforce.net/builderm...l_DougBell.htm

The Homebuilder's Special (and maybe the Bell too?) come undrilled. How would I match drill the new tw to the existing holes in the tw spring?

Thanks.

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Larry Bowen
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  #2  
Old 01-25-2006, 10:54 AM
ptrotter ptrotter is offline
 
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Location: Sussex, NJ
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Larry,

That is an interesting question as I plan on doing the same thing. I expect that you could measure as close as possible and drill through one side using a small dril and slowly increase the size until the outer hole touches one side of the inner hole, then use a round file to enlarge the outer hole to match the inner hole. The you could drill through the other side. I would go from one side on one hole and the other side for the other hole, that way each side would have one hole that matched perfectly. This should get it close enough that the wheel could not rotate on the rod.

Does the ACS tailwheel fit the Van's tailwheel spring rod properly?
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RV-8 82080 Finish/FWF Kit
N801PT
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  #3  
Old 01-25-2006, 12:21 PM
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f1rocket f1rocket is offline
 
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I recently installed one of the wheels from ACS, although I bought it from the supplier at a substantial savings. ($230 vs. $303 from AC$). The company is located in Ojai, CA and they don't have a web site. Maybe the CA guys know who I'm talking about.

The wheel is real sturdy, a little bit larger than the Van's wheel, but has sealed bearings, and better ground clearance. Since it sits a little higher than the stock wheel, I get a little bit better look over the nose.
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Paid through 2043!
Lund fishing Boat, 2017, GONE FISHING
RV-12 - Completed 2014, Sold
427 Shelby Cobra - Completed 2012, Sold
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  #4  
Old 01-25-2006, 12:28 PM
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Bob Martin Bob Martin is offline
 
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Location: Richmond, Virginia
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Default match drilling holes

Larry,
I replaced my tailspring last year and had to redrill it into the fuselage, so I could only see one side. I used a dowel rod to extend the hole alignment down where I drew a line on two heavy boxs sitting next to and under the elevated tail. I used the lines to align the drill bit to keep it as close as possible. It turned out pretty good actually.
Another untested idea:
You could remove your tail spring and jig it in a drill press, align the bit with the existing hole and then slip the wheel assembly over the spring and, after aligning it with the perpenticular marks you put on the spring before you removed it, you drill the holes in the new wheel assembly.
Another Idea untested:
Leave the tail spring installed, mark alignment lines under the spring and beside it for alignment guides in the first scenario.
Tips: sharp bits with oil, go slow, have helper for second set of eyes for alignment.
Good luck,
I like the tailwheel design you showed to keep from hanging up on edges of things, like the ramp edges. I'm still happy about changing from the old chains and standard tailwheel to the full castoring and tail link!
Bob Martin
RV-6
Louisa, VA
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  #5  
Old 01-25-2006, 03:03 PM
sf3543 sf3543 is offline
 
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Here's how I match drilled a new tailwheel on my RV6.
Slide the new tailwheel onto the spring just up to the first hole, align and mark the longitudinal line on the side of the tailwheel spring housing.
Make a measurement down to where that bottom hole should be and drill it slightly undersize, on one side of the tailwheel housing only.
Put the tailwheel back on the spring and line up the new hole on the tailwheel with the hole on the spring. Drill all the way through....now you have your first hole.
In my case, I just measured the distance to the next hole and repeated the above steps and it came out perfect. (Remember to drill the hole undersize so you get some wiggle room.)
Once you get the first hole drilled, you could use various methods to line up the second hole, including using a piece of aluminum, or something, to make a template out of, but I found that unnecessary.
Good luck.
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  #6  
Old 01-25-2006, 03:08 PM
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Michael White Michael White is offline
 
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Location: Cartersville, Georgia KVPC
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Default Match drilling tail wheel spring

Larry,
You could also try using an old R/C modeling trick: Take a strip of cardboard, about 2" wide x 12" or so long should do, and lay it along the spring rod with one end flush to the tail wheel end of the spring rod (covering the existing holes). Tape the other end of the strip securly to the spring rod, and mark where your existing holes are located on the cardboard strip (magic marker or push a nail through to make a hole). Lightly bend (do not crease) the cardboard out of the way, slip the new tailwheel assembly in place, make sure it is properly aligned, and lay the cardboard back down in place. You now know exactly where the existing holes are, and you should be able to match drill with no problem. Start with a small hole and enlarge as needed, but assuming your existing holes are true and perpendicular to the axis of the rod you should be able to get a true match without removing the spring rod from the airplane. I use this tip all the time on my R/C fiberglass cowls for locating needle valve holes and such.

Best of luck,
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  #7  
Old 01-25-2006, 09:21 PM
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N130WN N130WN is online now
 
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Thumbs up

Thanks for all the good suggestions. I think I'll pursue the tw from ACS. It looks a little more stout that the Bell model, and Randy and Jay Pratt are using it successfully.

Looks like these guys produce it. Their site is here: http://musclebiplane.org/htmlfile/tailwhls.php
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RV-8 Built, sold, missed.
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RV-8 Emp in progress ...

Last edited by N130WN : 01-25-2006 at 09:33 PM. Reason: Added links
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  #8  
Old 01-26-2006, 03:28 AM
rv8ch rv8ch is offline
 
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Default Replacement Tailwheel

Quote:
Originally Posted by N130WN
Thanks for all the good suggestions. I think I'll pursue the tw from ACS. ...
Please keep us posted. I'm very interested in this as well.
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Mickey Coggins
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  #9  
Old 02-06-2006, 10:23 AM
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glfrdug glfrdug is offline
 
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Location: Manistee, MI
Posts: 180
Default New Pic and Info on "Bell" tail wheel

Gentleman,
This is the newest picture of the "bell" tail wheel. This actually happens to be Danny King's ready to ship and shows a good pic of what you will receive. The fork and post ready to slip in to your current bracket, a new axle bolt and nut as well as a top fiber lock nut.

They can be shipped, unpainted, painted gloss black, or primed only.

I have a list of 32 inquiries to date. 16 of which are flying and the rest are builers. We wanted to get the units to flyers first and builders second.

The cost has been determined to be $185 shipping included as long as it is not out of country...we may have to adjust for that. One of the first is going to Australia and we will need to look into that cost....what a community we have.

The unit as you see it is about 5 oz. heavier than Vans if you compare the two.

Estimated time for delivery will determine about where you are on the list, but Dad is making them about 6 at a time.
The first 6 of 32 are going out this week...the next 6 will be starting, etc...we will do all we can, the best we can, as quickly as time allows.

I will be contacting everyone who is on list in the next couple days to make sure I have it correct and everyone is still interested.
Thanks again for your interest and Dad and I are happy to be able to assist you all in a small way....


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RV 8 N266WB
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Bell Tailwheel Fork #1
dbell@manisteenational.com

Last edited by DeltaRomeo : 02-06-2006 at 07:18 PM. Reason: centered image
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  #10  
Old 02-06-2006, 12:07 PM
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f1rocket f1rocket is offline
 
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That's a nice looking unit. I already have the Aviation Products tailwheel so I won't be needing one, but I like what you and your father have done. Nice job!
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Randy Pflanzer
Martinsville, IN (II87)

www.pflanzer-aviation.com
Paid through 2043!
Lund fishing Boat, 2017, GONE FISHING
RV-12 - Completed 2014, Sold
427 Shelby Cobra - Completed 2012, Sold
F1 EVO - partially completed, Sold
F1 Rocket - Completed 2005, Sold
RV-7A - Partially completed, Sold
RV-6 - Completed 2000, Sold
Long-EZ - Completed 1987, Sold

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