Air Jam & Ram Jam

[sporty]

Air Jam In the works, build progress, stock wheel base























Will use a smaller air divider inside, test piece balsa for now. will thin super thin plastic strip.





That's all for now On Air Jam.

NOW

Ram Jam Car.

Modified wheel base, Spacing is still stock spacing tho.



















Still need to cut my thin plastic strip for directing air flow in the Ram Jam as well.

And work on rear fenders.

Ran out of time, to get them finished, both Air fenders are different and I have 4 more styles / designs , I want to do.

Im all out of bsa wood too ! So I cant build a few more cars for a bit. But hope to get back to these over the weekend.

3 cars in build stages right now.


And Back fenders, Air Jam and ram Jam Fenders I need to make yet. Working out shapes yet.

Will they work or just be neat looking !


Got to give a shot out to Vitamin K, I am working with him on a few designs and a nice blue print.
Sporty

[sporty]

I got lucky and had a little bit of time to work on Ram Jam.

I got the rear fenders made and on.

Lets me know what ya guys think ? cool ? crazy ? ya not gonna work, might work ? I got as I mentioned a few more styles and designs I want to make yet.

But feed back can help guide me along.


























I think it might be a little boxy looking and I want to do more angle, curves, flair in future some of the next ones.

No weight yet or anything. Since I was not even sure id like it or anything yet.

So, please some feed back.

Sporty

[whodathunkit]

I think it is a neat look thats different for derby car fenders Sporty!

And it never hurts to play around with the ideas and designs and test them out.
That's when building and learning gets fun..
By doing things different from what every one else is doing.
You never know if it will work or not.. intell you try.

[sporty]

Thanks,

I thought, there is this hole debate, on air. And most know where my thoughts are at on this.
So on the other hand.
If there is air.
Then why not use it to help the wheels spin easier. Use the air to aid in the wheel spin. If it can or will ? Unknown.
Key what is best shape, style that gives the best chance to see if it could work..

[whodathunkit]

Sporty,

Some one once posted an image.. something like what is seen in this link:
http://www.bikernet.com/news/images/PhotoID28697.jpg

Sence the wheels rotate clock wise on the left side and counter clock on the right side..
as the car is moveing forward..
I'd would say you would want the air flow to leave out the chambers to the bottom side of the wheels.

[sporty]

Sporty,

Some once posted an image.. something like what is seen in this link:
http://www.bikernet.com/news/images/PhotoID28697.jpg

Sence the wheels rotate clock wise on the left side and counter clock on the right side..
as the car is moveing forward..
I'd would say you would want the air flow to leave out the chambers to the bottom side of the wheels.

The air will leave out the bottom. I just have not put in the thin divider yet, . I did show in earlier photo in this post, the thicker divider. I just have not had the time to cut and make the thin one yet.

[sporty]

Still working on Air Jam.

But I got Ram Jam Covered.

I have several designs, changes in mind here. So In the near future. Ill have a much wider variation of this style coming soon.






















So, here it is covered. Its a bit to square-ish and boxy for my taste, But I had to begin somewhere to get a feel for it.


Hoping I can pull off, the more rounded and more angle, smoother transistion shapes in the future builds.

I have a clear divider to go inside and angle it to change/ adjust airflow. not shown in pictures, yet.

I also want to use 1/32 thick balsa or basswood, Hoping to have that later next week.


Sporty

[whodathunkit]

Sporty,
I like the looks of the car!

But something looks a little off to me in the photos..
So I hate to ask you how wide the car is across out side fender to out side fender.
Did you inset bouth the front and back wheels for this car or I'm missing that part in the photos or something?

Or are you testing are Inspection Skills? (It fit's the track it races.. )

[sporty]

Sporty,
I like the looks of the car!

But something looks a little off to me in the photos..
So I hate to ask you how wide the car is across out side fender to out side fender.
Did you inset bouth the front and back wheels for this car or I'm missing that part in the photos or something?

Or are you testing are Inspection Skills? (It fit's the track it races.. )

No, you are correct, I also feel it is too wide and the right front fender skirt is I feel to low. but I wanted to decorate it. It is not likely to fit into a inspection box, and the right fender likely will not clear the transition as is.

so much time making those boxy fenders, I wanted to atleast complete the look ! the one thing about those fenders and super glue. I can take the exacto and remove them and make better size front fenders and then add the new ones and cover them.

See my other new posts, you will see what is more important to me, see video.

my goal right now is function of the air flow., shape is a factor and part of it, but overall speed and track testing is way to soon yet.

see this -- post, link---

http://www.derbytalk.com/viewtopic.php?f=11&t=7779



Sporty

[Laserman]

Hi fellas,

That car looks sweet!

I especially ike the look of the rear fenders!

Kind of Formula 1 type of feel.

As far as speed goes I have a few thoughts:

I have wanted to try some different designs that are developed around the idea of directing air from below the nose through a hole in the middle of the car and over the weighted area.

The fenders you have would appear to increase the skin drag while also causing a restriction for the air to force itself thru.

However, I would also postulate that it may be possible to use the Bernoulli principle to steer the car into the rail.

This would reduce the amount of toe in that would be needed on the car. On the hill it would be like a straight drop in!

The steer would only go into effect after full speed has been acheived.

On the subject of making the wheels spin faster I am more skeptical.

If you get a chance, you should look into Venturi tubes.

This could be useful in PWD cars but quite a longshot.

I am happy to see you going out on limbs.

After all, we just figured out how the Egyptians moved the blocks for the pyramids!

That should tell us all a bit about how much we as people are really sure about in the world.

[sporty]

nice reply.


I appreciate it, ya its out there, and much work yet to do, to perfect shape, style design. But baby steps. Before I can walk.

I might add in 8Mm fan. About $50 each tho. Fit right in my air holes.


Suncon, Uf-383-100

Need someone else building and working with me on this, who has a track and timer...

[sporty]

See my other post. With video clip and different styles.

And I have thought about straws and making venturi and trying it, just need time to do more.

[Vitamin K]

I just can't see the words 'Ram Jam' any more without linking this.


https://youtu.be/ZbjyuDYtAtk

Please return to your regularly scheduled discussion.

[ngyoung]

If you get a chance to test this car on a track you could simply tape the holes to compare performance. I am skeptical but would be pretty syked if it works.

[sporty]

If you get a chance to test this car on a track you could simply tape the holes to compare performance. I am skeptical but would be pretty syked if it works.

Did you see the video clip and other styles .? Post there please.

Sporty