D, HP Junkies Camp is in Troubble

[juan ruiz]

Well once more we have come to a DEAD END in the AXLE Dept we have work non stop to find a solution to our axle dept ,our inicial plan was to install 930 stub shafts on our narrow body carrera but it turns out that Sway - Away dont make the proper stubs anymore to make this posible, the axle it selfs we have found plenty of sources the dilemma now is the stubs axles

If anyone of you outthere have any sugestions I am all ears, we need some heavy duty Cages to be able to leave the line with 12psi of boost.

Thanks in advance

[beepbeep]

What's the problem? Which part is breaking?

AFAIK, first thing to break is CV, then axles, then stubs.

Worth knowing is that 930 CV's have same diameter as Carrera CV's but are somewhat thicker. Unfortunately, all Carrera stubs I have seen have outer CV's integrated with stubs. Also, 930 stubs aren't compatible with Carrera/SC stubs as hubs are different.

Carrera shafts:


Anyway, a guy i know is going to use 930 tranny with big-block V8 engine and he had his axle-shafts custom made by GKN Motorsports in England:



So it might be worth checking...

also, there is a small custom company here in Sweden (Sellholms) that can produce axles in spring-steel that can be twisted two turns before they let go.

Hope it helps...

[juan ruiz]

Great Help

Problem # 1

Axles are breaking on half right on the center of the axle, clean cut like Godzilla spit them

# 2 Stubs shaft are Breaking either the cages are exploting or the shaft is breaking inside.

# 3 The turbo ones will NOT fit on the carrera as the turbos are longer in addition we will need a special adapter that Sway-way used to sell.


Also, 930 stubs aren't compatible with Carrera/SC stubs as hubs are different.

Exactly our BIG DILEMMA but it has to be a way to make this work without changing the trail arms etc.

Finding the axles it not that big of a deal at this point is the Cages, I will try to find those company web sites and see if they can help us

Thanks a lot, and come up with a solution

[Amac]

Have you tried Windrush evolution (Wevo)
They make Heavy duty racing transmission
parts, maybe they can help. 650-595-5772

[juan ruiz]

I look at the web site but dint find any on that dept,

Mark williams , can do them but I need a blueprint of the axles, stubs shaft and everything else on that dept, So were in Gods Earth I can find those specs ?

[makaio]

Here are a few companies I would try. I found them in my Sand Sport magazine. They all specialize in 930 axles for Hi-output (500 to unlimited HP) buggies and sandrails:

Weddle racing Gears
(805)-696-9665

Mendeola Racing
(619)-691-1000

Rancho Performance Transaxles
(714)-680-6737

Transform
(800)-508-7267

Tatum Motor Sports
(623)-979-0808
www.tatummotorsports.com

Gear One
(623)-934-6913
www.gear-one.com

Good Luck!

[juan ruiz]

THANK YOU I will try all of them

[doozer]

Can you take a stock unit - take it apart and have it heat treated - nitraited - etc...

An axel with splined ends should be easy to replicat with a good CNC in any material you want...

[beepbeep]

My 5 cents:

If we do a physical analysis of evens occuring at drag-race, highest loads occur during launch. After that, torque-loads at back wheels wil drop as rotations speed raises. In my humble opinion, best way of avoiding unwanted axle failures is by smoothing/avoiding torque-shock when dumping the clutch.

Porsche cured this on 935's and 917 by using rubber-guibos (Hardy discs) between cardan-jointed axles. I believe that using somewhat thinner axle made of spring-steel is the cheapest ticket in this case.

[Porschekid962]

Check out smart racing products, http://www.smartracingproducts.com/ they sell custom made drive axles very nice stuff. That might be a solution unless you can find a genuine set of 935 axles, good luck.

[juan ruiz]

If we do a physical analysis of evens occuring at drag-race

Ok here are the facts, we must leave the line hard and we need to leave with 10-12 psi of boost we dont have too but this will help us a lot so even if we leave at 4,000rpm with lets said 7 psi of boost still hard on the components, as we leave on 7 psi at second gear we will switch from the low boost 15psi to 30 psi and down all the way to the track.

We broke one axle right on half shifting on 2 gear, just to give you an idea, now the main problem is not the axle rather finding custom made 930 stubs so we can run the 930 set up for now, it appears that one of the companys provided to us will be able to help us if thats the case we are home free if not I be back..

We do THANK YOU ALL ! for helping out everytime! the 10 sec pass will be here that I can promise......

[makaio]

[juan ruiz]

makaio

you save the day bro!

[masraum]

Granted it's not really as simple as this, but couldn't you get dimensions, do a cad drawing and have some machine shop cut you some parts from billet or something. You could have things made specifically for you, and from what I understand that sort of thing is not that expensive.

[juan ruiz]

Yes we could, BUT the big problem will be if we break something and is custom made, with the 930 route we can change them as necessary and we can buy them of the shelf . so we will still have spare for the races, Thanks Do!

[thabaer]

Juan, somebody just posted this thread about a guy using a vette LS1, and he talks about axle problems:

http://www.toy-jet.ls1fun.com/about.html

[SteveStromberg]

Why not use U joints? they make one that will handle far more horse power than C-V joints.

http://www.pstds.com/driveshafts-101.cfm#ujoint

[juan ruiz]

Thanks again guys, regarding the U joints I think we go back to the same issue as been able to quick fix it as needed, maybe for the future this could be something to look at it.

So to make it simple we are going back so far we can have the axles custom made so thats no problem, the cage dept has been fix too all is needed is to be able to install the 930 stub style, so we have been contacted by an old 911 Drag Car racer and he has come up with the solution, we will make our own and will see how they work.

Here you can see what direction we are talking about

http://www.gear-one.com/products/index.htm


Billet C.N.C. Machined Stub Shafts
Made from aircraft quality, heat treated steel, bearing diameters precision ground, bus and 930 shafts ava

[Wayne 962]

Try Renegade Hybrids in Las Vegas - they have been making stronger axles for the V8 conversions that put 450 to the wheels...

-Wayne

[sammyg2]

A ford 10 inch with strange axles will handle all the power you can make. All the drag racers run em