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-   -   Gluing New JConcepts Tires (https://www.rctech.net/forum/electric-off-road/982380-gluing-new-jconcepts-tires.html)

MNiceGuy 03-22-2017 07:41 AM

Gluing New JConcepts Tires
 
I've been trying out JConcepts new line of carpet tires (Pin Down + Swagger) and while I like their performance so far, they separate from the wheel like nothing I've seen before.

I've glued an untold number of Schumacher sets and have never had a problem those. They will actually tear before the bead releases. Others at my track are having the same experience with the new JConcepts tires.

I'm using TLR wheels and TLR Standard Tire Glue. Just like with other tires, I scrub the gluing surface of each tire and wheel with 91% Isopropyl prior to mounting.

What am I doing wrong?

ZEe_NYC 03-22-2017 07:49 AM

200-400 grit sandpaper the wheels on the contact spot. Also... 'massage' the tire/wheel after you apply glue to get into all the small cracks and spaces.

I think I read that in RC car action about 18 years ago and I still do it to this day.

Hope this helps.

Coke in a can 03-22-2017 07:51 AM

New glue. Sounds like your bottle has gotten old.

DustinEich 03-22-2017 07:52 AM

Try thin glue...

MNiceGuy 03-22-2017 07:53 AM


Originally Posted by Coke in a can (Post 14877423)
New glue. Sounds like your bottle has gotten old.

That could very well be. I bought a few bottles a while back and have been using them as needed. If this stuff truly has a shelf life I could see where I'm pushing it.

symmetricon 03-22-2017 08:18 AM

Loctite professional super glue
https://www.officesupply.com/office-...hWNxoCvAzw_wcB

MX304 03-22-2017 08:59 AM

Clean the tire bead with simple green. It does a much better job of removing the mold release agent than IPA will.

BRSracing 03-22-2017 09:06 AM

I use Proline tire glue. Never had a issue with a tire coming off the rim. I run proline tires as well. A couple friends at our local track had some issues with tires coming unglued but the proline glue seemed to fix their issues.

the incubus 03-22-2017 10:46 AM

Sounds to me like you're not cleaning the tires properly before gluing. Most tires still have residue from the mold release used to keep the tires from sticking in the molds once formed. JConcepts & Proline tires tend to have more mold release than most others.

You want to wipe the beads down well with a rag using acetone and you will see the rag turn a brownish, rusty red leaving the tire a true black. If you glue tires without doing this the mold release keeps the glue from adhering well to the rubber and they fall off the wheels.

As for Glue, I've found the best RC specific glue to be AKA but it's so thin that it cures almost on contact and one false move and you're stuck. The best glue I've used period is Bob Smith medium thickness CA Glue with the Gold Label. It works flawlessly BUT when you're ready to recycle wheels Acetone softens it easily. AKA Glue is much more difficult to remove.

https://modelmerchants.com/wp-conten...-1-359x370.jpg
https://modelmerchants.com/shop/bob-...-safe-ca-glue/

Davidka 03-22-2017 01:18 PM

Sounds like your glue isn't fresh enough. Keep it for general/other stuff, but buy some fresh, thin CA and it should clear up your problem. I've been through this with 1/8 tires and always found that new glue stuck great and old glue put my in an endless cycle of re-gluing spots after every run. I buy the tiny bottles of zap-ca now since it goes stale before I ever use it up.

Fishing 03-22-2017 02:04 PM

As said before, get some new glue. It goes bad with temp changes and age.

the incubus 03-22-2017 02:22 PM

If your superglue is affected by temperature changes you need another brand or it's not closing properly allowing it to dry out a bit. Good CA Glue lasts almost indefinitely if stored properly. The Loctite stuff lasts ages but the closure of their bottles is very secure in my experience. The AKA bottle screws closed so that one tends to last long too.

It's a good idea to buy ones that seal well so they don't dry up, but clean your tires and they will glue up just fine.

I had this issue with Prolines and JCocncepts a few times and my Panther tires all shipped fresh from the molds and were covered in the mold release but I clean every tire I get and not one has fallen off since I started doing this.

Also, use quality tire bands and allow them to set well. And although I have "proper" tire bands, the very best thing you can use for gluing tires are those silicone cancer awareness bracelets. THOSE are money! They hold much firmer than any tire bands. I always place them on and then the tire bands over them to ensure the bond is extra secure.

MNiceGuy 03-22-2017 03:06 PM

Thanks for the great information guys. On your recommendations, I'm going to pick up some new glue and make a point to be a little extra diligent with the cleaning process.

JsK 03-22-2017 04:03 PM

I cant remember the last time I cleaned a set of 1/10 scale tires before gluing:weird: Either the
Jconcepts is filthy or you got some crap glue. Since we switched to turf I dont think anyone at
our track bothers anymore. We do all use AKA glue though since its what the shop carries. Funny
because when we cut down blocks yours just gluing a small section of the sidewall to the rim.

Never any tire failures.

QDRHRSE 03-22-2017 07:48 PM

I clean my rim and tire mounting surfaces with brake cleaner and paper towel and use the AE Medium glue. Its evil stuff but its never failed me. I also use the pro-line glue but its not as easy as its thicker. The key is the cleaning. Its unbelievable how much gunk comes off the tires.


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