pic: 4 Inch Wheel Design
 

Re: pic: 4 Inch Wheel Design
 

Looks nice. Are you planning to broach the center with a hex or key? If so you might consider indexing the broach so that the "halves" broaches line up. This would allow the halves to be truly interchangeable.

Re: pic: 4 Inch Wheel Design
 

Looks nice to me. ^_^ Course... I'm not the mechanical genus... My questions are only about the CAD program. Which one are you using?

Also, do you think you could get away with fewer spokes?

-Rion

Re: pic: 4 Inch Wheel Design
 

I am using Solidworks 2009

Yes, i could but i liked the look of 10 versus 6 spokes for some reason.

Yes since my upload i have added the hex broach and the halves line up perfectly. The purpose was to have the halves be interchangeable.

Re: pic: 4 Inch Wheel Design
 

Nice Wheel,

How much does it weigh with bolts?

-RC

Re: pic: 4 Inch Wheel Design
 

0.42lbs With bolts

0.36lbs Without bolts

Re: pic: 4 Inch Wheel Design
 

Is there any chance that you have the AM Shifter Gen 2 CADDED with the gear teeth? If you do can you send it to me?

Thanks RC

Re: pic: 4 Inch Wheel Design
 

My my that looks mighty familiar. ;) I too wonder about your plans for the bore, and the necessity for symmetrical halves. You might consider not having the bore extend through both halves. Timing/indexing a broach is a pain. Also, you may find it not worth it to have the wheel be two halves at all, if simplifying manufacturing is your goal.

Re: pic: 4 Inch Wheel Design
 

Nice! looks kinda familiar! Haha =)



I see you're going "clamp style" for tread, but you need a little groove along your rim that captures the tread so it doesn't fall out (higher quality picture here where you can see the groove better http://604robotics.com/Blog/wp-conte...2/IMG_0296.jpg). I like how you made both halves symmetrical for ease of machining, however, what we do is make them asymmetrical so you can have a locating groove instead of using the screws/axle to center the two halves.

Also, you might be able to get away with less spokes. 7 is a cool number.

Keep up the great work!

Re: pic: 4 Inch Wheel Design
 

Well i was thinking of broaching it while it was assembled or just simply keying it. The two halves is so that you can clamp the tread along with rivits for a better grip.

Re: pic: 4 Inch Wheel Design
 

Ah,

I would try to aim for about ~.3 lbs. How thick and wide are those spokes?


Yes I do have one, when I get home tomorrow I'll make sure to put it up on the CAD Library.

-RC

Re: pic: 4 Inch Wheel Design
 

Yeah I agree. As you can see from the pictures I posted, the back of our wheel is just a rim, which saves weight. It simplifies the broaching issue too. By the way, those 6" wheels I posted were 0.28 pounds each.

Re: pic: 4 Inch Wheel Design
 

Each half has a 1/8 spoke thickness and a 1/4 combined thickness.
The spokes are 1/4 in wide each.

Thanks again RC

Re: pic: 4 Inch Wheel Design
 

WOW thats light!

Re: pic: 4 Inch Wheel Design
 

The CAD says it is .28 pounds, but when I weighed one it was .23 pounds. :D