billet to usable part

[wsuwrhr]

Shameless spam I know. With everyone else showing off what they do, I thought I would showcase my parts.
Brian
http://free.***boat.net/gallery/Gearhead_Garage/Motors_and_Drives/drivem.JPG
Mangled brand new yoke.
[ December 02, 2002, 08:25 PM: Message edited by: wsuwrhr ]

[wsuwrhr]

http://free.***boat.net/gallery/Gearhead_Garage/Motors_and_Drives/drive1.JPG
Ths good side.

[wsuwrhr]

http://free.***boat.net/gallery/Gearhead_Garage/Motors_and_Drives/drive2.JPG
2.5 thru hole.
[ December 02, 2002, 08:11 PM: Message edited by: wsuwrhr ]

[wsuwrhr]

http://free.***boat.net/gallery/Gearhead_Garage/Motors_and_Drives/drive3.JPG
Face-milling both sides flat.
[ December 02, 2002, 08:12 PM: Message edited by: wsuwrhr ]

[wsuwrhr]

http://free.***boat.net/gallery/Gearhead_Garage/Motors_and_Drives/drive4.JPG
Drilling bearing holes.
[ December 02, 2002, 08:13 PM: Message edited by: wsuwrhr ]

[wsuwrhr]

http://free.***boat.net/gallery/Gearhead_Garage/Motors_and_Drives/drive5.JPG
Roughing bearing holes to size for reaming.

[wsuwrhr]

http://free.***boat.net/gallery/Gearhead_Garage/Motors_and_Drives/drive6.JPG
Cutting profile on first side.

[wsuwrhr]

http://free.***boat.net/gallery/Gearhead_Garage/Motors_and_Drives/drive7.JPG
Adding script on first side.

[wsuwrhr]

http://free.***boat.net/gallery/Gearhead_Garage/Motors_and_Drives/drive8.JPG
Cutting profile Third side.

[wsuwrhr]

http://free.***boat.net/gallery/Gearhead_Garage/Motors_and_Drives/drive9.JPG
Cutting inside profile fifth side.

[wsuwrhr]

http://free.***boat.net/gallery/Gearhead_Garage/Motors_and_Drives/drive10.JPG
Finished part.

[wsuwrhr]

http://free.***boat.net/gallery/Gearhead_Garage/Motors_and_Drives/drive11.JPG
Finished part.

[Unchained]

Nice job,
Is aluminum going to hold up for a part with that much stress on it?

[superdave013]

I wanna get me one of dem der cnc thingies!
Another outstanding part from Brian's boat shop.
I ws going to post a pic of what I did last night. After seeing that I'll just crawl back into my cave.

[wsuwrhr]

No problem, driveshafts are made of aluminum all day. The original one worked good, but it was my first design and and I think the U-joint failed. Drive shafts are made of carbon fiber also. The ends of a carbon fiber driveshaft are riveted on. I don't think it will be a problem.
Brian
[ December 05, 2002, 09:16 PM: Message edited by: wsuwrhr ]

[wsuwrhr]

Come on Dave, post your part. I want to see it. Wait until I do my aircleaner housing, and the valve covers.
Brian

[superdave013]

I will post when I get to work. I'll do it in the v drive forum.
Anyway, it's not spam unless you try to sell it with out anyone asking. So I will ask even though I have no use for it.
How much does that part cost??

[flat broke]

Brian,
Quit showing off you fancy mo fo. :) Seriously, guys like you get guys like me depressed because scripting and compund curves are just things that are damn near impossible by turnin handles. The part looks great, but are you sure there is enough material in the bearing carrier area? You've run the part before so you'd know, but that doesn't seem like much material. Either way, thanks for postin the pics and keep up the good work.
Chris

[wsuwrhr]

If I could to charge myself, I would be rich. HaHa. Prototype price would be about 300, maybe a little less. It took about 6 hours machine time
for prototyping. Production parts would take about half that time, half the cost also.
As far as the strength goes, the bearing carrier area measures .2 thk, it is about .1 less than a production aluminum driveshaft for a car. The idea making the area thinner is based on a car driveshaft being under more load than a pump in a boat. We'll see. I think the original yoke failed because I made the area holding the clips in way too thin. In machining I call that DOOOHHHHHH. But I already had it made at that point so I tried it anyway. Brian

[MikeF]

wsuwrhr:
If I could to charge myself, I would be rich. HaHa. Prototype price would be about 300, maybe a little less. It took about 6 hours machine time
for prototyping. Production parts would take about half that time, half the cost also.
As far as the strength goes, the bearing carrier area measures .2 thk, it is about .1 less than a production aluminum driveshaft for a car. The idea making the area thinner is based on a car driveshaft being under more load than a pump in a boat. We'll see. I think the original yoke failed because I made the area holding the clips in way too thin. In machining I call that DOOOHHHHHH. But I already had it made at that point so I tried it anyway. Briani.e. 400hp x 2.91(1st gear) x 4.10(final drive) = 4772hp (to the wheels in first gear)
400hp to pump = 400hp

[wsuwrhr]

Pretty much what I was thinking, good figures.

[superdave013]

Brian, You should make one more of those and show it off at the next NJBA race.

[wsuwrhr]

Do you think anyone would want it? I made it out of necesity.
Brian

[flat broke]

wsuwrhr:
Do you think anyone would want it? I made it out of necesity.
BrianIt beats the shit out of the current Spicer/Dana iron crap that everyone has to run due to lack of alternatives. Its a seldom seen part so I don't know how much folks would pay, but there IS a market of sorts.
Chris

[Oldsquirt]

MikeF:
i.e. 400hp x 2.91(1st gear) x 4.10(final drive) = 4772hp (to the wheels in first gear)
400hp to pump = 400hp wsuwrhr:
Pretty much what I was thinking, good figures.Unfortunately that equation is incorrect for HP, but is correct for Torque. Remember, HP = Torque x RPM / 5250.
Your equation does not take the RPM factor into consideration. Also remember that when you use gears(or levers) to increase applied torque you lose movement distance. IE: if you use a lever to double your torque(2:1), you cut the movement range in half(1:2). Your gear ratio example gave you just under 12:1 torque multiplication. This would also give you a 1:12 RPM reduction. Plug those into the equation and you would see that the horsepower number doesn't change.
When you get down to it, HP isn't what you want to look at anyway. You want to compare the forces applied, so torque is what you want to look at. So just substitute "Tq" for "HP" in both equations and the comparison will become accurate. :)
Having spent way too many years looking at Corvette aluminum driveshafts/halfshafts, I tend to think you need more meat around the "ears" of the shaft. I believe the Vette shafts used forged ends welded to tubes, which would allow them to be smaller with the same strength. It might also be better if the transition from "ear" to "tube" were a larger radius to spread out the load.
Having said all that , I would love to have one myself. Nothing like polished billet parts. :D :D

[wsuwrhr]

Well alright,
All I would need is the center to center distance
of the yoke you have. So who wants one?
While I agree on the calculations, I took into account that alot of people mistake HP for TORQUE.
Thanks for the ideas nonetheless.
I can make the radius larger without a problem.
However I still feel the actual LOAD placed on the yoke installed in a boat is far less than a driveshaft in a car. I am all for strength, I just didn't feel it is necessary, the customer is always right.
Brian
[ December 04, 2002, 08:02 PM: Message edited by: wsuwrhr ]

[lakesmodified]

Brian, the finished part looks awesome! Definitely shows your expertise in the area of design and machining. I do have a question for you, why not use stainless?

[wsuwrhr]

Thanks,
Stainless. It certainly is possible. But why would
you want to? For the look, or corrosion properties? Just curious. I would hate to drill a 2-1/2 hole in a piece of 303.
Brian

[lakesmodified]

wsuwrhr:
Thanks,
Stainless. It certainly is possible. But why would
you want to? For the look, or corrosion properties? Just curious. I would hate to drill a 2-1/2 hole in a piece of 303.
Brian Basically for the corrosion properties as well as the higher strength. The fact that once it's polished, you wouldn't have to worry about polishing it again, also sounds good. Unfortunately, my boat has a 3 point mount, so I wouldn't benefit from the "Show" piece, but if I ever get off my ass and install a 4 point mount, I would be interested in a great looking drive shaft.

[wsuwrhr]

I'll agree with that. Thanks for the compliment.
Happy New Year.
Brian