Tundra Tires - RC Groups
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Dec 25, 2008, 07:02 PM
Team Swallow
Jonas M.'s Avatar

Tundra Tires

Hey Guys,

one of my next planes will be a Bellanca Scout:

Bellanca Scout

It will have about 1.4m (55in) wingspan.
I want to keep it light to get good STOL capabilities and a realistic speed in flight.

I'd like to build one with those awesome Tundra tires. They have to be very soft and of course light.

The tires have to avoid jumping at landings.
The problem is the low weight of the plane so it's not just buying soft tires from the LHS and hope they suspend enough. They will be way too hard!
Also they'll have the wrong size of the wheel rim.

Anyone got experiences with something like that?
Any ideas how to build tires?
What materialsto use?

Thanks in advance,

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Dec 25, 2008, 10:04 PM
Suspended Account
Why not use inflatables and inflate them to the pressure you like ?

Dec 25, 2008, 11:18 PM
AMA 910957
EJWash1's Avatar

Start with these two:

Du Bro makes 1/4 scale Cub-style tires.

Keep the added weight and weight and balance of your aircraft in mind.

Good luck!

Dec 25, 2008, 11:25 PM
Registered User
I would look into the Trexler tires mentioned above by EJWash1. They have the necessary shape and can be inflated to the hardness you desire. Plus, they are very lightweight.

Trexlers from Tower

Dec 26, 2008, 07:00 AM
Team Swallow
Jonas M.'s Avatar
Thanks for the ideas.

These Trexler tires look great.
I searched in the internet and unfortunately haven't found a dealer here in Germany.

Similar tires here are all to heavy and too tough so they won't suspend enough.

The Scout will weigh around 900g(32oz).

What about making some myself?
I thought about bringing some very soft foam into shape and then coat it with some sort of latex lacquer. Just a thought...

I have no idea if that works but I like building planes with as little buying as possible.


Dec 26, 2008, 05:21 PM
B for Bruce
BMatthews's Avatar
Yes, you can make some for yourself. For the tires get some of the foam water pipe insulation and make hubs from balsa and aluminium tubing for the hub. A Dremel or similar can be used as a quickie wood lathe to form the hubs. For this use I'd laminate the hubs from pieces of 1/8 sheet to make balsa plywood. Drill a hole through the center and "mount" the blank to a music wire turning mandrel using a very small drop of CA to lock it to the rod. Turn it using a short knife point or bevel ground end on another piece of music wire and finsh to size and shape with sandpaper. Mount the foam to the hub with some contact cement and turn the "tire" to shape. Twist the hub off the mandrel and insert the aluminium or brass bearing tube and CA into place. Repeat and you've got a really nice and super light set of mudder tires....
Dec 26, 2008, 06:06 PM
Team Swallow
Jonas M.'s Avatar
That sounds good!

The way you describe is the exactly how I make the tires for smaller planes.
But I use normally foamed rubber bent around the hub.

Fortunately I've got some of the pipe insulation lying around here.
Next year I'll try it. Maybe I'll thin out the tube a bit if it isn't soft enough...

Thanks for your idea!


Dec 26, 2008, 11:20 PM
I eat only vegetarian beef
Skycruiser's Avatar
I've made white foam tires before in the same way Bruce mentions above. I then wrapped the tyres with gauze bandage saturated with PVA. A coat of latex paint finished them off. really light but not a lot of give. I use drilled out 1/4" dowel as a hub, with 1/32 ply load spreaders each side.

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