longer dogbones

[orangemazda]

As some of you know, I'm building another WOIN car but I'm doing it with a slightly different flavor.

Project thread: http://www.rc10talk.com/viewtopic.php?f=36&t=36923

Anyways, I'd like to use 1/4" rear axles with RC10T bearings in the WOIN rear hubs and Kline A-arms. My question is, has anyone done this and found dogbones that will work?

Why do I want to do this you ask? Freak of nature, that's why...

[jwscab]

B4 dogbones may work. They are about .400" longer than an rc10 bone.

[GoMachV]

I blended the 1/4" outer cva stub axle with a B4 cva shaft on my ten4 short arm car. The only way to get the 1/4" axle is in the classic cva kit so it's not the cheapest route

[JK Racing]

What rear wheels are you planning on running (I assume you are attempting to keep it 'legal')? The WOIN formula was to run modern B4 (or now B5) wheels on the rear, but neither of those are designed to use the 1/4" old axles.

Not trying to poopoo the idea, just dont want you to go all the way down that road and have to rethink wheels.

[orangemazda]

JK,

I don't really have a good reason that I want to use 1/4" axles and dogbones other then I want something somewhat weird for project "freak of nature".

You are correct that WOIN formula works great, I used it on my WOIN build here: http://www.rc10talk.com/viewtopic.php?f=35&t=36069&start=15

My thought on this project is that this car is mid morph from an oldschool racer to current technology. As if my old Andys racer from the 90's and my current WOIN car had a baby!

Again, just wanted to do something different and "weird".

What rear wheels are you planning on running (I assume you are attempting to keep it 'legal')? The WOIN formula was to run modern B4 (or now B5) wheels on the rear, but neither of those are designed to use the 1/4" old axles.

Not trying to poopoo the idea, just dont want you to go all the way down that road and have to rethink wheels.

[mk-Zero]

Wasn't there a thread a while back that listed all or most of the available cva shafts and their lengths? I could use a list like that too for some projects I have in mind...

[JK Racing]

No issues, just trying to help

Now, get that thing all finished up and show us some pics!

[jwscab]

no, there are only bits and pieces through different threads. I would love to get a driveshaft database set up, but it's a pretty monumental task. also, there has to be a standard measurement technique. For whatever reason, most are measured end to end when the pin to pin in the critical length, as well as ball diameter. even the manufacturers are all over the place.

the other problem is guys will only have certain models/brands, and you have to rely on everyone measuring to do an accurate job. Not always the easiest. especially for the oddball brands.

[n20capri]

I couldn't find any measurements when I was building my OIN car - so I made my own to the exact specs that I needed and had them 3d printed out of stainless! So far they are working fine. The car has been 69mph with them! lol

They are 2.7" pin to pin - can be customized though...
https://www.shapeways.com/product/ZS99YYX2Q/2-7-quot-dog-bones?li=shop-results&optionId=55931261

[mk-Zero]

Nice work, glad to hear they're holding up. I would be more concerned about them holding up to a high traction off road car than on a top speed car though.

[n20capri]

Nice work, glad to hear they're holding up. I would be more concerned about them holding up to a high traction off road car than on a top speed car though.

I did do some pretty good launches on them...granted only a few but I was surprised for sure! lol.

[mk-Zero]

Cool, I may have to try some! Would be awesome if we had totally customizable bones that could hold up to abuse on the track!

[mk-Zero]

Have you tried to make cva bones? I would think the cva end would be the challenge as far as strength and precision?

[n20capri]

I don't have any CV stuff to copy - just plain bones. If I had something to copy I'd give it a shot...

[mk-Zero]

Maybe I'll give it a try, it would be fun

I'm pretty sure they will not hold up though. The walls are pretty thin on the cva end and stock ones seem to be hardened. I tried to drill one once and it was obviously very hard material. A cvd on the other hand would probably print well and stand up to abuse fine...