pic: 4 Inch Wheel Design

MWB · #1 01-05-2010, 00:41

RyanS · #2 01-05-2010, 00:44

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.

Rion Atkinson · #3 01-05-2010, 00:49

Quote:

Originally Posted by RyanS

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.

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

MWB · #4 01-05-2010, 00:56

Quote:

Originally Posted by Formerly Famous

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

I am using Solidworks 2009

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

Quote:

Originally Posted by RyanS

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.

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.

R.C. · #5 01-05-2010, 01:01

Nice Wheel,

How much does it weigh with bolts?

-RC

MWB · #6 01-05-2010, 01:04

Quote:

Originally Posted by R.C.

Nice Wheel,

How much does it weigh with bolts?

-RC

0.42lbs With bolts

0.36lbs Without bolts

MWB · #7 01-05-2010, 01:07

Quote:

Originally Posted by R.C.

Nice Wheel,

How much does it weigh with bolts?

-RC

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

sanddrag · #8 01-05-2010, 01:09

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.

Eugene Fang · #9 01-05-2010, 01:10

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!

MWB · #10 01-05-2010, 01:12

Quote:

Originally Posted by sanddrag

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.

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.

R.C. · #11 01-05-2010, 01:16

Quote:

Originally Posted by MWB

0.42lbs With bolts

0.36lbs Without bolts

Ah,

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

Quote:

Originally Posted by MWB

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

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

-RC

Eugene Fang · #12 01-05-2010, 01:22

Quote:

Originally Posted by R.C.

I would try to aim for about ~.3 lbs.

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.

MWB · #13 01-05-2010, 01:23

Quote:

Originally Posted by R.C.

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

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

MWB · #14 01-05-2010, 01:25

Quote:

Originally Posted by EugeneF

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.

WOW thats light!

Bannanakin · #15 01-05-2010, 01:32

Quote:

Originally Posted by EugeneF

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.

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

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