Rear bumper design/build

[Overland Tailor]

Anyone have any contact information for Stainless Doctor? Address Telephone Number?

Thanks,

John -

Made contact today... All is good at this time. Appreciate everyone's help.

John -

 

[HDJDub]

Are they still selling these?

 

[adventr]

Are they still selling these?

No, they are not for sale.

Sent from my iPad using IH8MUD

 

[NLXTACY]

I believe it was NLXTACY regarding one of the power pole brackets. May have been resolved by now.

PM'd with TIM.KORN
No issues with Tim at all. Issue was/is with SD about the part mentioned. Not resolved but water under the bridge. I found another solution. Lesson only cost me a few bucks.

 

[Lungbutter]

Nice work!

 

[Huis Clos]

Nevermind. It was determined that if a big enough meteor were to hit the spindle, in just the right spot, it *could* break.

So, they got another pass.




View attachment 637563



View attachment 637564

Sent from my C771 using IH8MUD
View attachment 637563View attachment 637564

Man, you know how to walk that cup smoothly, supreme gold on those welds means the least amount of oxidation, which you don't get in mass production. Bravo!

 

[Lionsgarage]

Ok, this is a serious question, why not put the swing out spindle on the swing out and the sleeve that carries the outer races in the bumper? that way if you want to take the swing out off you ca just out a welch plug in the hole and you won't have the spindle sticking up in the way?
The forces (load) is exactly the same from an engineering standpoint, unless there is some other
Reason I don't know about....

 

[Flank]

Ok, this is a serious question, why not put the swing out spindle on the swing out and the sleeve that carries the outer races in the bumper? that way if you want to take the swing out off you ca just out a welch plug in the hole and you won't have the spindle sticking up in the way?
The forces (load) is exactly the same from an engineering standpoint, unless there is some other
Reason I don't know about....

A: It's my understanding that this thread is now dead and they are not offering the bumpers.
B: If the bearings, etc are inside the bumper, you can't remove / reinstall the swingarm without having to remove the bumper. There is no access to be able to be able to secure the swingout properly and get to the nut to put preload on the bearings or the lock collar on if there is not bearings. The only way to do it would be to pass the spindle through to the bottom and secure from underneath, which would be prone to damage.

 

[Lionsgarage]

I was just speaking of bumper design in general, I will be doing my own and like many design points of this one.
Thanks

 

[Overland Tailor]

I have the last one built and can tell you that I had the fuel can / cooler swing out open and did pull up's on it to test the weight and any flex. Nothing - The build is solid -

 

[OTFin843]

Is there any way to get the CAD design for this? I am willing to pay whatever is needed. I just need the CAD!

Thanks

 

[saltycoconuts]

Is there any way to get the CAD design for this? I am willing to pay whatever is needed. I just need the CAD!

Thanks

It looks like solidworks

 

[UglyCruiser]

PM sent to Tim Korn, really would appreciate the cad file for this to compare it to the measurements I got. I plan to get mine laser cut, CNC press brake bent and machine my own spindles

 

[UglyCruiser]

Anybody?

 

[Razorbackcruiser]

Not sure he still frequents this forum. I know for a fact he sold his 80 many years ago so the odds he checks this place is slim to none.

 

[UglyCruiser]

Does anyone have his email address?

 

[UglyCruiser]

Bump... Any info to contact him?

 

[UglyCruiser]

Had Contact with stainless Dr, but still no luck with cad files :/

 

[Creature503]

Most spindles that "do" break---snap at the upper weld / heat fatigue area over time. Given that you have boxed the spindle....you would be much better off with a very limited penetration weld in that upper high fatigue/load area. Not only is there no need for a big weld/multiple welds....but its actually working against the life of that spindle. The weld simply needs to hold it vertically and let the strength of the boxing act as the main horizontal load bearing element.

Cold worked steel is not good for welding applications since the heat will just make the metal lose it's strength (near the weld-basically releasing the tensile stresses of cold working) that was gained through cold-working. Hot worked metal is slightly weaker but more ductile and better suited for welding applications. Hot rolled will be cheaper and keep your bumper costs down while actually ending up being just as strong at the weld as cold rolled.

Welding cold rolled > welding hot rolled

 

[Trusty Rusty]

Anyone ever have any luck obtaining CAD files for this?!?!?