I would once again like to say congrats on making the decision and taking the initiative to make this happen. having seen how well a spool works in rwd vehicles for so long i am very interested to see what happens with this in an AWD application

 

great work indy, im def gonna be getting one of your v2 manifolds

 

I dont get it? welding the gears to housing is so easy and does exact same thing. only real advantage here is you can return back to stock when you want to turn drag car back into street car.

 

94AWD no disrespect but have you ever welded a hardened gear? I know you have seen inside a diff, but there is only one tooth of engagement per spider, after welding those you would have to align the other driver plate and hope you have it straight enough so the cluster housing will fit over the welded assembly. After ruining the heat treat of the spiders and drivers with welding it would just be a matter of time before it failed. You are 100% correct it can be done, but why take the chance. I have posted a photo so people can get a better idea of what we are talking about.

 

Jim,

Anytime you're involved in a project I know the engineering will be superior. I also know that at the level of racing you're involved with things that are acceptable for street vehicles become unacceptable risks when dealing with hardcore racing machines.

Great work as usual, and props to Tom too.

 

Great work Jim! Can't wait to see this perform!

 

Thanks Erik. Like Indy said, we're not in this to cut corners. I wanted something that when Indy says 'fixed', it means FIXED!

 

Finally!!! someone with the integrity of you, Indy, states something like this. I've been saying this for a long time. I refuse to weld a diff due to this simple fact. So many people think that welding something up is a simple task. They have no clue of metallurgy and what happens when the heat is applied. As Indy stated, no disrespect to you 94AWD, or anyone for that matter, just glad to hear someone else believes the way that we do.

Good job and a fine product, Indy and 9sec9.

Todd B.

 

After taking a few days off from the Evo world; I come back to see that Indy/9sec9, have already upped the bar not just a couple a notches but have created yet another playing field altogether. You guys are definitely leaps and bounds ahead of anyone else when it comes to engineering and problem solving. Innovative thinking leads to new records and a shift in industry standards. You guys have shown this kind of pack leading efforts with setting the stock 9 turbo record(s). It's no wonder you guys are the ones to chase.
We are all fortunate to have Indy and 9sec9 in our Evo world. It makes for never a dull moment waiting for something new and exciting to happen. Thnxx Indy/9sec9 for sharing....

 

I am small time tranny builder. have built 50 or so porsche transmissions and a 200 or so 4g63 trannies. I have welded 30 or so center diffs in the early transmissions. Welding the outer tips of the gears to the housing does not heat the splines up enough to change their hardness enough. I have had no issues with weld fatigue or breakage there after. The hardness of gears is important for gear teeth to survive as they slide over each other. The hardness of spline teeth is far less important. There is no sliding motion with splines and way more contact surface to transfer power. The center diff transfer all the power you are making through AWD. A front or rear diff is only seeing half the power. So my 600hp car tested diffs would be like a 1200hp evo for the rear. I even used one gear that was broke in half. Once the gear tips are welded to housing it held splines together just fine. I guess I am just uneducated and cheap. carry on and ignore my comments.

 

Thats fine 94AWD it works for you, and I did say no disrespect, it sounds like you are welding the drivers on the inside to the cluster housings. Uneducated and cheap...I'd have to say no, when there are no parts available sometimes you do what you have to do.

I'm not willing to take that chance of a potential failure. I was taught early on that every part you touch, build, or design for a race car has a direct effect on many people and it is your responsibility to make sure it is assembled, or designed correctly to ensure the driver, competitor, and the spectators safety.

This weekend consisted of building components for NHRA Top Fuel and Funny Cars for this weekends race in Pomona, CA. Those drivers lives depend on the component I construct to stop their cars from what used to be 330 plus MPH. The component is the second action in the chain of events to bring one of these cars to a safe stop. When it comes to safety I will not take any chances period. At 330 or 160 MPH you seldom get a second chance when something goes wrong. From Top Fuel, Funny Car, or the Evo in my eyes there is no difference when designing or constructing a component.

 

This. When you do this for a living you learn not to take any unnecessary chances with someones life. Nice job Jim the spool looks like a nice piece. I'm looking forward to this airbox. We might have to get together and work on some 335 parts at some point.

 

Thanks, Coming from one of the best at Hendrick Motorsports I'll take it. Please tell Wes, Brian, Rizzo, Ken Howes, Mr. H, and the boys at the Hendrick 24 and 48 shop hello from me and the guys in Indy. While I don't miss Winston Cup, crap I mean Nextel or is it the Sprint Cup now, I do miss the friends I have made working in the cup family. Best of luck this year, I'm sure the COT (car of overtime) is giving you just that and plenty of it as you get ready for the big one.

335 parts... no problem, let me know what and when and we will make it happen. Mmm BMW stuff.

Thanks again, Jim

 

You're idea is very slick, and I've seen similar stuff on the domestic side, but none that have pulled it off so clean and simple. Nice part for sure.

You could be right about the AWD being more forgiving to a failure. I've seen a few axle failures at the line with spools and they always made me cringe to think of what might happen at the big end with an axle failure at 1000 WHP.

I think with turbo cars, you are dealing with a some what interesting situation too. While many high torque domestics break on the line, most turbo guys don't leave the line at full power. Many setups really don't get enough load on the motor to make full power until the higher speeds. Unfortunately, I have seen a few axles fail at the top end on friends cars. Luckily, they were all running torsion or clutch plate diffs so it wasn't that big of a deal. They have primarily been FWD drag cars, so an axle failure with a spool is pretty much taking you directly at a wall or into the other lane, a bad situation either way.

I may just have an irreational fear of spools too though.

Sorry, I did not mean to take away from your thread of an innovative idea that you pulled off very well.

 

03, I'm always open to any input from you . Thanks