Re: Wheels vs water
 

Thankyou for all the replies, i appreciate it, looks like this is a sensitive subject [emoji1787][emoji1787] I will just avoid water for now till someone invents real waterproof rc wheels with real scale performance. Thanks again for everyone's input[emoji106][emoji106]

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Re: Wheels vs water
 

That is it !"thumbsup"

Re: Wheels vs water
 

Yeah, lol that makes since! It was about 2am when I responded, so I missed a thing or two[emoji1787]. I personally run non vented without foams and it grips great.


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Re: Wheels vs water
 

Heres how I see it. Vented with nice dry foams do likely grip the best. However, once those foams are all soaking wet your actually better off with a sealed tire/wheel that still has dry foam in it.

I play in riverbeds frequently and cant stand the truck hauling around heavy water-filled tires with mushy foams inside.

Yeah, people tell me to vent the tires and just hold the truck in the air at WOT to fling the water out. My experience is that the average trail truck doesnt have the wheelbspeed to accomplish this. You get like half the water out and in a few weeks you still have ruined foams.

Re: Wheels vs water
 

Well that’s correct for single stage foams.

However the world has Other foams, Two Or Dual (closed cell) stage.... that don’t hold water, relying on size and air space for proper grip. I’m in the Everglades.... I never use single stage foams.


Hang up and Drive

Re: Wheels vs water
 

I don't vent tyres or wheels.
Pro-Line says don't..
https://youtu.be/ht2ung1R4e8



66% do not vent.



https://i.imgur.com/FcQlKA8.png
That's because your foams are too stiff.


My ALT foams work great in sealed tyres.
https://youtu.be/0Iu5lkBcXfg


https://i.imgur.com/h6jTtl6.jpg

I've tried driving on snow, no shrinking.
No ballooning when I go to 100m(330ft)hilltop that is just 10min drive from my place.
https://i.imgur.com/4whIraL.jpg

Re: Wheels vs water
 

I think he meant like a major elevation change. As in a mountain.

Re: Wheels vs water
 

Going 1000m(3300ft) higher changes the pressure 10%.
Often it's colder on the mountains so it offsets the tiny pressure change.(1psi/10F)
Not to mention the tyres may not be vented but certainly it's not airtight. The pressure evens out slowly.
Going really high with your 1:1 car, have you ever had problems with tyre pressure and ballooning...

Warning!

If you waterproof your servo and receiver box, they burst open and spill their guts all over the place if you go to higher elevation where unvented tyres start to balloon.
You may also notice that breathing is difficult because of the thin air.
Cooking noodles takes longer because water boils in a lower temperature.

Wheels vs water
 

Yeah, maybe second thoughts on taking my rig up an extra 13,800ft [emoji23][emoji23]


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Re: Wheels vs water
 

I used to live on the coast so 0ft above sea leval and when i went to tahoe amd crawled at 10000 for above sea leval my tires needed venting cause they were balloons and then back the other way they would suck up creating a flat spot in the tire i only needed to pull one screw to vent them but got to the point were i got tired of doing it and opened up the vents on the wheels my new place is at 3500ft and going from the beach to my house theres no change but from 0to10000ft its a huge difference
I started venting my tires cause.the rim vents would clog up with dirt and would have the balooning and shrinking problems again not a big deal if you dont traval from coast to the top of the sierras i was making the trip every other week for a while enuff to see it as a problem especially with multiple rigs

Re: Wheels vs water
 

Yeah, I bet it’s fun around Lake Tahoe[emoji106] We drove from Indy to Oakland to Seattle and I wish I would’ve had my rig with me. We went through the sierras and Rockies, I was so mad I didn’t bring it. I’m not going to be going near that 14k ft mark, There’s good spots at 0-4K[emoji16]


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Re: Wheels vs water
 

Yes I have had to deflate my 1:1 when visiting my dad in the Rockies. I live at sea level, he’s at 8,000 feet. No they didn’t exploded lol. But it was noticeable enough to affect traction in the snow.

Not sure why the sarcasm/aggression it’s just an observation. Some guys vent, some guys don’t. Do what you like to your RC truck and just have fun. I do a lot of things that may be a placebo but it is what it is, not losing sleep over it :)

Re: Wheels vs water
 

Opinions without context, it's really common and often start living their life as "facts".
It's great that the Pro-Line video where they recommended not to vent crawler tires, also answer the question about tire shrinking or ballooning.

I was just outside driving in snow with 1:1 car, I've never noticed that the traction on snow is better or worse depending on tire pressure.
We change to snow tires when it's 50F(10C), and on -40F(-40C) the pressure is still ok.
We do check the pressure to keep the tire wear even, but not because of traction.

Wheels vs water
 

We do winter jeep trail rides every year.

Everyone airs down before we leave the shop. The airing down increases the contact patch vs not airing down.

Helps immensely in the snow.

At our final spot where we eat, we air back up before getting on the highway.

I only slow crawl rocks and never do water or mud, so my rc tires are vented.

My vehicles do lose tire pressure in the winter. If I check the pressure before I go somewhere, there will be a 7-10# difference. After driving a while and some heat is generated, the pressure is back to where it supposed to be.

My tires will even flat spot a little from sitting all day when it is -20F or colder. When I leave work, the car goes “thunk thunk thunk” down the road until the tires warm up.

As mentioned before, to each their own.

Re: Wheels vs water
 

I know it's not quite the same as crawling, but LITERALLY EVERYONE in any class of RC racing will vent either their wheels or tires (or both). Touring, short course, 1/8 scale, indoor, outdoor, etc. It's simply more consistent. Now, to me it seems pretty clear that venting offers a performance advantage of some kind, even if it is miniscule, otherwise none the pros would be doing it either. (Before y'all jump on me, YES I have tried unvented wheels/tires while crawling, with multiple different wheels, tires, foam, and vehicle combinations. It does not work better than a properly vented setup).

That said, I would not vent my tires/wheels if I regularly drove through mud and water; it indeed does destroy the foam pretty quickly.

Re: Wheels vs water
 

I'm not going argue which is better because I don't know ;-)

But tires conform very nicely without venting. I usually run CI single stage foams which allow an air gap between foam and tire and this works very good for me at least.
https://uploads.tapatalk-cdn.com/202...c2a913f5ba.jpg
https://uploads.tapatalk-cdn.com/202...5f095a42fb.jpg
https://uploads.tapatalk-cdn.com/202...6b1e3db585.jpg

Re: Wheels vs water
 

Yup, reading all the comments since I posted the whole "wheels vs water" topic, I think in my opinion being new to the scene, that unvented is best for being on a budget, avoid excess water and look after your rig. Yes I know for people that have money to throw around my logic seems stupid. Thanks for all the input, I reckon the next big rc crawler invention would be a tyre that has realistic characteristics and is 200% waterproof[emoji23][emoji23][emoji23][emoji23]

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