payton89222

hey fellow collectors, I've noticed some of my hogan's 737 new rubber tires are having split/crack issues, does anyone also have the same issues with the new hogan rubber gears? I did some research on the forum and found a couple of threads regarding split/crack issue on rubber gears, I'm starting to worry if this issue will keep happening from time to time...since I've changed all of my old hogan tires to new rubber tires!

I inspected all of my collection with new hogan rubber gears on them, but only 737-500 and 737-800's gears have this issue!

Here're the old threads that I found on the forum...
Hogan's issue: http://www.diecastaircraftforum.com/...ber-tyres.html

Here're some photos of my models.

Yogurtlite

Yes friend, but it is not only for the 737. I have a couple of 747 (one of them a Herpa) and a 777 with cracked tires. This sucks, what is Hogan pretending? Buying them mountains of gears sets, man that's not fair.

But this not only for Hogan, Herpa, Gemini and JC wings are involved too in this issue. I will upload tomorrow my cracked models.

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payton89222

I'm hoping hogan can solve this issue, I don't want to keep buying the gear sets just to replace the crack ones from time to time, since they are not cheap at all!

Yogurtlite

Hi mate:

Take a look to these photos, the worst with cracked tires is the Herpa. I have an extra set of Hogan's gear for the 747. But man I don't want to keep buying everytime a set of tires because of this issue, as you already said. And I confirm again this problem is not only for Hogan, you see in the pictures this concernes JC Wings and Herpa too.

The pictures:

Cargolux by Hogan, Lufthansa by Herpa and Air New Zealand by Jc Wings

Cargolux



Lufthansa



Air New Zealand


I have to say, the reason of cracked tires on the JC Wings is because its weight. Man, this 777 is too heavy!!! You may move/rotate the wheels from time to time because they tend to have this flat shape. You have better get a Gemini Jets wooden stand to avoid this issue.

So, that's my contribution to this thread.

Enjoy your weekend.

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LH456

Regarding the Herpa models you should contact their custumer support. Just write them a friendly mail with one or two pictures and they will send you replacement tyres for sure.

EGPFGLA

Very sad! Surly they would of fixed this issue by now

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payton89222

thanks for the photos Yogurtlite! as far as weight goes, hogan's models are relatively light compare to diecast, so I don't think weight is the problem but the materials that are made of the rubber gears! hopefully hogan will address issue ASAP! anyone knows how to contact hogan regarding this issue?

I know Big Mouse has some connection with hogan, so hopefully he can forward this issue to hogan.

Yogurtlite

Ok mate, I'll do write and show them this little trouble. Mmmm....just one question, is this the mail direction to do so? Thanks in advance.

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LH456

Try this one: kd@herpa.de

It's the customer service address. They even do speak/write English, so don't hesitate to contact them

CBL

Guys,

Any of the rubber tires will eventually crack, this is just a question of time. The material has not an infinite shelf life. No need to panic, just start buying replacement.
Btw, the real tires on the planes also crack with time

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My collection

Upkeep

I haven't seen any of this happen to any of my models (yet) and I have a number from these various manufacturers. Perhaps attempting to bring in a supply of replacement tires is worth looking into, but one has no assurance that they won't crack either just sitting in storage.

As CBL has noted, all rubber will split over time. But the real question is how much time. I have Corgi 1:144 and 1:72 models here that have been around since 1999 and the rubber tires on those are perfectly fine . . . even when checked under magnification. And a great number of those have been sitting on their gear when on display. Some of those 1:144 propliners are quite heavy and produce flat spots (like the real aircraft) but the difference is the rubber Corgi has chosen will 'roll out' and the flat spots disappear.

Also, I have a William Bros. kit of a 1:72 Boeing 247 that I bought in 1978-9 which has yet to be built. In looking at it in detail the other month, I noticed the tires within are rubber as well. I also remember noting, when I bought the kit, how pliable the rubber tires were. Well here we are some 34 or so years later and that rubber is STILL extremely pliable -- and most certainly no cracks when scrutinized under magnification. The moral of this story is: There is rubber, and then there is rubber.

Now in the case of my GJ models, I have found the rubber tires on my 777's and A320's are just a bit hard, but not cracking . . . just getting hard . . . hard like 50 year old Dinky Toy tires which often become more like rock, but not crack.

I really wish these manufacturers could find a way to provide tires made of a synthetic compound that would avoid this issue and yet stay pliable. But that would mean they would have to rely on the factories not cutting corners and substituting materials. Personally, I doubt we can be assured of that any time soon.

Regardless, I doubt weight has very much to do with this. I have 3 Corgi Bristol Britannias sitting out (and have been for the last 12 years or so) on their gear and none of those tires have even come close to cracking, and those Britannias have some significant weight, for sure.

No . . . I'm convinced the culprit is either the material composition and/or factory substitution . . . or both.

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CBL

You perfectly resumed the problem. Rubbers are in fact a family of rubbery materials & formulations.

Some are more prone to cracking than others.

For the reading pleasure of interested parties: Tire Tech Information - Rubber Cracking

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Thanks very much for the link! I will have a look at this in depth later today. I hope some of the manufacturers (like Hogan, GJ and Herpa) do too!

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