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  #1  
Old 08-13-2021, 05:05 AM
daddyman's Avatar
daddyman daddyman is offline
 
Join Date: Jan 2014
Location: Fredericksburg, Virginia
Posts: 322
Default Pneumatic tailwheel

I've wanted to lighten my tailwheel for a the last 4 years.
I finally found one from Matco- P/N WHLTW35 (wheel) TIRT6X2ASY (tire and tube) $ 102 + 24
My issue started because I do not have a standard Van's twin wheel fork with 1/2" bolt, but rather have a single arm- 5/8" locking design.
Once I received the new wheel and tire, I had to sand off .001" from my existing axle. My application also needed 2 spacers.
I ordered them from McMaster-Carr P/N9440T26 and cut them shorted to fit.

Very pleased.
The new assembly is 1.6 pounds lighter.
It is also quieter, taxi and landings are very nice.

Daddyman
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  #2  
Old 08-13-2021, 09:08 AM
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Low Pass Low Pass is offline
 
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Location: Houston
Posts: 2,117
Default

Thanks for sharing.
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Houston
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  #3  
Old 08-16-2021, 10:14 AM
Levoe210 Levoe210 is offline
 
Join Date: Oct 2010
Location: Rancho Cucamonga, Ca.
Posts: 16
Default

I have the same API single sided tailwheel and have been looking for this solution as well, thank you for sharing
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  #4  
Old 08-16-2021, 10:32 AM
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Bob Martin Bob Martin is offline
 
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Location: Charlottesville, Virginia
Posts: 1,272
Default Towing

Daddyman...
Looks nice.
How do you pull the -4 into the hangar with no nuts for the tow bar to grab on?
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Bob Martin
RV-6, 0-360 Hartzell C/S, Tip up, 1200+TT
James extended cowl/plenum, induction, -8VS and Rudder. TSFlightline hoses. Oregon Aero leather seats.
D100-KMD150-660-TT ADI2- AS air/oil seperator. Vetterman exhaust with turndown tips.
Louisa, Virginia KLKU N94TB
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  #5  
Old 08-16-2021, 06:00 PM
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hgerhardt hgerhardt is offline
 
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Location: torrance, ca
Posts: 730
Default The 6" is nice, the 7" is better

I used that 6" Matco tailwheel on my -6 for several years, and it is a delight to taxi with. However, it has a tiny air volume which makes it difficult to inflate accurately, which also necessitates adding air almost weekly and the sidewall is so short that a pothole or big expansion joint can easily pinch the tube causing a flat. Had several flats away from home base, so always carried the original tailwheel as a spare.

However, recently Matco came out with a 7" version which still fits the stock Van's fork and has a much greater air volume (relatively speaking; it's still small) and so doesn't have the flat propensity of the older 6" tire. Just remember that to use these pneumatic tailwheels with stock Van's forks you'll need to make a spacer. PM me if you want a CAD model to have one made. Here's a pic of the 7" on my -6:

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Last edited by hgerhardt : 08-16-2021 at 06:03 PM.
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  #6  
Old 08-17-2021, 05:38 AM
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daddyman daddyman is offline
 
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Location: Fredericksburg, Virginia
Posts: 322
Default Mystery towing solved

Quote:
Originally Posted by Bob Martin View Post
Daddyman...
Looks nice.
How do you pull the -4 into the hangar with no nuts for the tow bar to grab on?
Bob,
I went through several towbars before I found one that worked. I think the advertised here on page1 would work, but I'm way too cheap for that.
I simply tuck it in from in front of the tire, then tug. The tailwheel bumps onto dolly-towbar and I can pull it back. Caution: you cannot push it forward, only back.
I'll take a pic or short video and send it to you.

Daddyman
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  #7  
Old 08-17-2021, 05:39 AM
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daddyman daddyman is offline
 
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Location: Fredericksburg, Virginia
Posts: 322
Default good to know

Quote:
Originally Posted by hgerhardt View Post
I used that 6" Matco tailwheel on my -6 for several years, and it is a delight to taxi with. However, it has a tiny air volume which makes it difficult to inflate accurately, which also necessitates adding air almost weekly and the sidewall is so short that a pothole or big expansion joint can easily pinch the tube causing a flat. Had several flats away from home base, so always carried the original tailwheel as a spare.

However, recently Matco came out with a 7" version which still fits the stock Van's fork and has a much greater air volume (relatively speaking; it's still small) and so doesn't have the flat propensity of the older 6" tire. Just remember that to use these pneumatic tailwheels with stock Van's forks you'll need to make a spacer. PM me if you want a CAD model to have one made. Here's a pic of the 7" on my -6:

Attachment 14726
So far, no flats.
Great to hear the 7" will fit.

Thanks for sharing,
Daddyman
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  #8  
Old 08-17-2021, 08:31 AM
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vfrazier vfrazier is offline
 
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Location: Mount Vernon, IN
Posts: 1,392
Default

Or you might consider a Condor fork and tire from Flyboy.

https://www.flyboyaccessories.com/RV...oducts-s/1.htm
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www.f1aircraft.com
F1 Rocket and F4 Raider components
1-888-F1AIRCRAFT (1-888-312-4727)
www.flyboyaccessories.com
RV and Rocket Accessories, Tailwheels, Tools, & More
1-888-8FLYBOY (1-888-835-9269)

F4 Raider - under construction
F1-H Rocket "Crazy Horse" - sold
RV-4 "Chief Pontiac" - sold in 1994, purchased in 2018
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  #9  
Old 08-17-2021, 10:19 AM
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Bob Martin Bob Martin is offline
 
Join Date: Jan 2005
Location: Charlottesville, Virginia
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Quote:
Originally Posted by vfrazier View Post
Or you might consider a Condor fork and tire from Flyboy.

https://www.flyboyaccessories.com/RV...oducts-s/1.htm
Vince,
My hangar mate with a -6 also, just installed one......he loves it and swears his landings are better. He does have to put air in it....and it is not easy being so small a volume....but it looks good and rolls good.
Do you think some slime would help with the air pressure?
We do like the custom axle with the easy to hook on nuts! Smile!
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Bob Martin
RV-6, 0-360 Hartzell C/S, Tip up, 1200+TT
James extended cowl/plenum, induction, -8VS and Rudder. TSFlightline hoses. Oregon Aero leather seats.
D100-KMD150-660-TT ADI2- AS air/oil seperator. Vetterman exhaust with turndown tips.
Louisa, Virginia KLKU N94TB
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  #10  
Old 08-17-2021, 11:12 AM
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vfrazier vfrazier is offline
 
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Location: Mount Vernon, IN
Posts: 1,392
Default

I just "slimed" two lawn mower tires for the same reason. There were no holes in the new tires, they just didn't seal well on the hub.

Actually, it wasn't actually "Slime", I went to the parts store and bought a can of "Fix-a-flat" and simply refilled the empty tires. Working so far.

I can't see why it wouldn't work on a smaller tire also. The volume in the can is probably enough to refill it a several times if needed.
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Vince Frazier
www.f1aircraft.com
F1 Rocket and F4 Raider components
1-888-F1AIRCRAFT (1-888-312-4727)
www.flyboyaccessories.com
RV and Rocket Accessories, Tailwheels, Tools, & More
1-888-8FLYBOY (1-888-835-9269)

F4 Raider - under construction
F1-H Rocket "Crazy Horse" - sold
RV-4 "Chief Pontiac" - sold in 1994, purchased in 2018
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