pic: A little CAD practice

[MattC9]

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[Hawiian Cadder]

why make the wheel base so short?

[steelerborn]

Do you have any tensioning plans on the outside wheels? I can't really tell, but that is important. It looks very nice, everyone always gets better after the season is over, keep it up.

[MattC9]

Originally Posted by Hawiian Cadder

why make the wheel base so short?

It's 37in?

[MattC9]

Originally Posted by steelerborn

Do you have any tensioning plans on the outside wheels? I can't really tell, but that is important. It looks very nice, everyone always gets better after the season is over, keep it up.

Yes but I donut know how I should go about it, have any ideas?

[Akash Rastogi]

Originally Posted by MattC9

It's 37in?

With smaller wheels, you can distance your wheels more, giving you a longer wheelbase. Note: wheelbase in this case is distance between wheels, not overall length of the drive.

[MattC9]

Originally Posted by Akash Rastogi

With smaller wheels, you can distance your wheels more, giving you a longer wheelbase. Note: wheelbase is distance between wheels, not overall length of the drive.

Ahhhh ok, Sorry i was a little confused at first, but ill put it on my todo list.

[PAR_WIG1350]

Originally Posted by MattC9

Yes but I donut know how I should go about it, have any ideas?

Floating tensioner (2 lexan strips + 2 bolts+ 2 nylon spacer/rollers)

[Al Skierkiewicz]

Matt,
Nice drawing. Now time to add some holes for mounting bumpers and add bumper supports between the wheels.

[Joey P]

Nice Chassis drawing. I am also the leader of CAD on my team. I have seen an improvement on my skills from start of the season to the end. Now, just add more to it. the wheel size is interesting. I have hardly seen small wheels like that on the past robots, but it seems to be a good idea. Keep going.

[Jared Russell]

Since you are already making bearing plates, it wouldn't be too difficult to slot their mounts in the frame rails and make a true "West Coast Drive" tensioner. Loosen mounting hardware, slide bearing block until chain/belt is tight, re-tighten (works even better with cam bolts or some sort of lead-screw to help keep the block in place once tensioned).

[akoscielski3]

My team has never made a chassis that has the wheels on the other side of the frame. I was wondering how you do this? Is it using a hex shaft or what? Could you possibly explain all of this or maybe put up a CAD design to download or even a close up picture. That way i could see how it works and maybe use a drivetrain like this in the future.

Thanks

[steelerborn]

There are a lot of great tensioning systems you could use. Obviously the easiest set-up would be just adding the kop tensioning system. But interesting systems are also around you could look at cam tension systems for the outside wheels. Making the center wheel direct driven would allow only the outside wheels that would need tensioning. I came up with a lot of crazy systems that would all yield the same result. My favorite one used surgical tubing to move the outside wheels farther out. In the end there is no true answer but a endless supply of them. You have all summer, I would say to experiment a little and find a unique solution that is your design. Keep it up.

[MattC9]

Originally Posted by steelerborn

There are a lot of great tensioning systems you could use. Obviously the easiest set-up would be just adding the kop tensioning system. But interesting systems are also around you could look at cam tension systems for the outside wheels. Making the center wheel direct driven would allow only the outside wheels that would need tensioning. I came up with a lot of crazy systems that would all yield the same result. My favorite one used surgical tubing to move the outside wheels farther out. In the end there is no true answer but a endless supply of them. You have all summer, I would say to experiment a little and find a unique solution that is your design. Keep it up.

Stupid question, Theres a KoP tensioning system? because if there is, I would be a very happy man.

Originally Posted by akoscielski3

My team has never made a chassis that has the wheels on the other side of the frame. I was wondering how you do this? Is it using a hex shaft or what? Could you possibly explain all of this or maybe put up a CAD design to download or even a close up picture. That way i could see how it works and maybe use a drivetrain like this in the future.

Thanks

I used a 1/8keyed shaft in the picture and I put an E-clip on the end of the wheel to keep it in place.

Do you still want up close pictures?

[akoscielski3]

Originally Posted by MattC9

I used a 1/8 keyed shaft in the picture and I put an E-clip on the end of the wheel to keep it in place.

Do you still want up close pictures?

I actually was thinking of it while sleeping... and noticed that u can use the key slots. Is everything key slot or no. Also how do you make the slot for the E-clip, is it just done on the lathe?

And is the only thing holding the shaft straight the brace on the side of the tubing + the tube?