New Items ALL NEW DYNASTY 92TX AXLES!

[DerbyDad4Hire]

www.derbydad4hire.com

ALL NEW DYNASTY 92TX PINEWOOD DERBY AXLES!

The fastest axles on the market. Easy to polish!

Eliminates the issue of the double step on the outer hub of the wheel!

Perfect for scouts or league racing!

http://www.derbydad4hire.com/The-Dynasty-92TX-Pro-Axle-with-Point-A-92TX.htm

Dominate your race!!!

Get yours today!

THE NEXT PRODUCT TO BE DUPLICATED! /images/boards/smilies/rofl.gif

 

[txchemist]

As my grandson would say "It has Winner written all over it"
Hope this becomes the stable, fast axle to boost both Pros & Scouts.

Thanks John

 

[Cramjet]

So if you don't have the double step, they are equal to the 92x?

 

[BulldogRacing]

I can't wait to try these puppies out!

 

[Ballistic Racing]

Too bad they're not legal for box stock! I could use this kind of help. Lol!

 

[5KidsRacing]

So if you don't have the double step, they are equal to the 92x?

Yes, exactly the same profile, but the step before the head is cut to fit inside the second step.... so your wheel rides on the inside step and the outside head hits nothing. This also make the head protrude outside the outside bore a little bit so you can grab them with pliers like you used to be able to do with the older wheels... win/win for the scout racer.

 

[Safer Racer]

I like the part about being able to grab the head with the pliers. The questions is --- For the pros racers is this axle just as fast as the 92x's or are you giving up just a little to make a better scout axle ???

 

[txchemist]

On a coned hub and the original 92, contact zone is a small ring just at the surface of the bore at the top of the cone against a beveled head, but even if you change the bevel to a flat 90 degrees, as long as other parts of the head do not touch the wheel, you have the same surface and area coming together with this design- so no speed drop with a coned hub, and a good speed increase with a std. double step hub, a universal axle.

 

[txchemist]

Here is a real world test of this axle design. We had most of the Cubs come to workshops this year for our Pack. We also had a Pro and the cars he and his son were working on test on my track. The Pro & sons cars also ran in the Longhorn Council race in Ft. Worth Tx. The times they ran on my track and the Longhorn track were identical, so the comparison of all Longhorn times to our Pack times is straightforward. Four boys in our Pack were super into building their cars this year and came over for about 3 hours of total work. They did drill canted back axles, but straight front axles with multiple holes on both sides so by changing which axle holes to use they found the best drift 3 wheeler on a tuning board only and ran that in the race. (Boys never get to see times of their cars before race or race each other) The goal was to make a low cost way to let the Cub find good speed with limited resources. Car bodies were donated by another Pro who put in the nickles pockets on a super low profile body.
The Cubs who just came over once for help got the raw car bodies, only 4 axle holes no cant drilled by each Cub. They did the Ghost Graphite in unpolished raw wheel bores. (GG is not as fast as Red Rocket and is an alternative to graphite and has only safe stuff in it and can sit for a long time before buffing and in my opinion, easier for a Cub to use).
The Cubs that came multiple times got 92TX style axles sprayed with a silicone lube, but the same raw wheels with only GG in bores. Those 4 cars would have run 1,2,3,4 if the Pro car was not in the race.

 

[5KidsRacing]

On a coned hub and the original 92, contact zone is a small ring just at the surface of the bore at the top of the cone against a beveled head, but even if you change the bevel to a flat 90 degrees, as long as other parts of the head do not touch the wheel, you have the same surface and area coming together with this design- so no speed drop with a coned hub, and a good speed increase with a std. double step hub, a universal axle.

I agree.... here is a visual...

 

[CivilWarTalk]

Awesome visual!

 

[CivilWarTalk]

Nickels! Good idea! So you drilled a 7/8" hole for the nickles?

Nickels weigh 5g, so 22 would weigh 110g or 3g shy of 4oz. The width for 22 nickels is 42.9mm or 1.68" That's a tight fit for the body widthwise but maybe better lenthwise centered in the rear?

I'll have to remember this for my next scout workshop. 22 nickles sure is cheaper than lead, zinc or tungsten! I had a number of parents complaining about the cost of weights!

 

[txchemist]

This was in a 5/16" thick body, an even tighter fit.
Tungsten in the hands of a greenhorn is not an advantage.

 

[txchemist]

More controlled testing with various preps & same raw Chinese wheels on same test car, a 3 wheeler with good drift. Super improvement from 92TX with both faster speed and tighter distributions.

 

[Vitamin K]

Any chance you can run a test with a non-grooved axle, too?

 

[txchemist]

The only non-grooved axles I have are "box" axles- and they are smaller diameter and slower for sure. The best I can prep them run just over 2.6 sec. If I machine the head to match the 92TX zone that rides on the wheel surface I got times down to 2.56 area

 

[ngyoung]

So with you not touching the outer hub anymore and leaving the double step are you leaving the contact area un-touched by the lathe? Wouldn't your removal and coning of the outer hub still be preferred if you had a choice since it gets trued to the wheel bore?

Have you developed a process for cleaning up the outer hub and leaving the double step? I know if you take off any material from the inner most part where the TX makes contact you may remove that gap between the axle's step and the axle head. So possibly mirroring any material removed from the inner step to the outer step would maintain that clearance.


I would imagine that you would have to get some really small custom tooling to be able to work that small surface.

 

[Vitamin K]

If I machine the head to match the 92TX zone that rides on the wheel surface I got times down to 2.56 area

Well now, you've just given me some ideas for the next time I run Box Stock... /images/boards/smilies/biggrin.gif

 

[Crash Enburn]

Well now, you've just given me some ideas for the next time I run Box Stock... /images/boards/smilies/biggrin.gif

You can take the $10 hit, get your car shipped back, and do the axles... You've got two months. /images/boards/smilies/smile.gif

 

[Vitamin K]

You can take the $10 hit, get your car shipped back, and do the axles... You've got two months. /images/boards/smilies/smile.gif

Hmmmm....a distinct possibility, yes...

Or I could start building another car, incorporating some other crazy ideas that I have...