Junfac air system

[douwe]

has anyone seen or used thes yet???
i just ordered a set for muddy/sandy conditions.









you only need to order the pump seperately

[tubed-n-lubed]

Those look sweet

[defiepilex]

i'm curious to try these on the Slash!

[hitman46mod]

I would say nice idea.

[FrankyRizzo]

I think scale applications would be badass!!

[bigdodge88]

Those are awesome, I might have to get some of those.

Justin

[Deezul]

prices and links?

[defiepilex]

http://www.junfac.com/shop/index.php...roducts_id=245


$21.30/pr


$18.00 for the pump

[helhedded]

wtf



those are the cheapest beadlocks that I have ever seen

[Stormin2u]

Originally Posted by FrankyRizzo

I think scale applications would be badass!!

I agree wish they had a 1.9 wheel available.

[defiepilex]

Originally Posted by helhedded

wtf



those are the cheapest beadlocks that I have ever seen

si!


even if they don't work out, i've only lost a little money.

[helhedded]

Originally Posted by defiepilex

si!


even if they don't work out, i've only lost a little money.

psssshhhhh


more like if they don't work out, you still have some beadlocks for your slash

[Coldnorth]

So, this brings one of my unasked questions to light:

Why do we use foam and vented tires, rather than sealed and pressurized tires? Is it a hand-me-down from other R/C car hobbies, or is there some other logical reason?

EDIT: ...I've just worked through some really simplified numbers, and it looks like in order to get the 'magical 75% tire height,*' a 2.2 rim with a Rock Lizard on it (5.19" tall, 2.2" wide) would need to be inflated to about 0.5 PSI, or 7.5 OzSI (ignoring any support from the rubber) - which relates to a '1:1' scale PSI of about 3.75 PSI, which is reasonable (at 1:8 scale, which I think the Axial is).

Since I've not really seen many gauges capable of reading that low, maybe that has something to do with the answer to my question. Either way, I learned somethin' already. :P

* http://www.4x4tirereview.com/airdown.html

[Phatmac]

Originally Posted by FrankyRizzo

I think scale applications would be badass!!

Agreed, of course the valve stems are only 10000% too large.

[Gst95dsm]

That's a really cool idea. now we need an ultra sensitive tire pressure gauge.... let's forget about the foam.

[Offroader5]

Originally Posted by Coldnorth

So, this brings one of my unasked questions to light:

Why do we use foam and vented tires, rather than sealed and pressurized tires? Is it a hand-me-down from other R/C car hobbies, or is there some other logical reason?

EDIT: ...I've just worked through some really simplified numbers, and it looks like in order to get the 'magical 75% tire height,*' a 2.2 rim with a Rock Lizard on it (5.19" tall, 2.2" wide) would need to be inflated to about 0.5 PSI, or 7.5 OzSI (ignoring any support from the rubber) - which relates to a '1:1' scale PSI of about 3.75 PSI, which is reasonable (at 1:8 scale, which I think the Axial is).

Since I've not really seen many gauges capable of reading that low, maybe that has something to do with the answer to my question. Either way, I learned somethin' already. :P

* http://www.4x4tirereview.com/airdown.html

I think the main reason would be that "scale to size" is not "scale to weight". If I built a 1:10 rig of my XJ...it would not be anywhere near the 1:10 scale weight of ~450 lbs. As you scale down, the weight scales down exponentially...not at the same rate.

[freetimecrawler]

Aired tires are way to bouncy for crawling, and only really any good for some scale applications.

[U$edUpH00ker]

and you really don't need the pump bc when you put them together they have air in them and if they leak out or you want to take air out all you have to do is take a ring off and it fills again lol

[bigdodge88]

Even if you couldnt use it for crawling you could always pump a lot of air into them and drive on top of the water.:-P

Justin

[mrpink]

Originally Posted by Coldnorth

So, this brings one of my unasked questions to light:

Why do we use foam and vented tires, rather than sealed and pressurized tires? Is it a hand-me-down from other R/C car hobbies, or is there some other logical reason?

who wants to worry about flat tires while crawling? RC tires are not very durable rubber, more so in the softer compounds. With this setup, one little pin hole will put you out for the day, unless you can reseal it.... fix a flat maybe??

also, as someone else said, they are far to bouncy.

p!nK