MTFCA Forum

A local resident inherited a model t truck that had a flat. Tire. The local tire shop would,t touch it and was referred to me. I had experience with split rims on a roadster that I had and unowned that their is a way to lock the rim after putting tire on. This rim had no way to lock it and I am asking if anyone has a photo of what locking mechanism looks like.

There is a tab that is welded into one of those slots it has a step in it that fits into the slot near that small hole, in that small hole is a rivet that holds a funny looking moveable tab that swings over to keep the strap, rectangular, piece in place. Thus, locking the rim. Hope this helps, I haven't any pics just now. Wingnut

Wingnut wrote: ↑

Sun Oct 06, 2024 12:39 pm

There is a tab that is welded into one of those slots it has a step in it that fits into the slot near that small hole, in that small hole is a rivet that holds a funny looking moveable tab that swings over to keep the strap, rectangular, piece in place. Thus, locking the rim. Hope this helps, I haven't any pics just now. Wingnut

Is this what your are describing. Also George better read ALL of this because of inherent danger https://www.mtfca.com/discus/messages/5 ... 1475385715

Justin H. - Western PA on Monday, September 26, 2016 - 03:39 pm:
That notch is each end of a ring that fits into a groove on the outer edge of the rim. The ring must be removed with tire irons which will allow the tire to be removed. I highly recommend that you take it to a tire shop that specializes in heavy truck tires to have the work done. An improperly mounted ring can fly off during inflation and mame or kill any living thing in its path.
By mike_black SC/FL on Monday, September 26, 2016 - 08:53 pm:
Jay,
This is one of those cases when "What you don't know WILL hurt you." It's a locking rim that can kill you if you don't know what you're doing. You'll probably have to find an old guy to show you, because most tire shops won't touch it. Good luck.

By tt newbee Thomas R. Hicks Central Va. on Monday, September 26, 2016 - 09:06 pm:
I recently had mine done at a tire shop that does mostly truck tires. They have one old guy who does TT tires. A younger guy who works there told me that the old guy is the only one crazy enough to change them.
They charged $45/tire, I think it was money well spent.

None of this previous post applies here.

Its not a rear "truck" rim. Its a 21" split rim, missing all the latch mechanism as wingnut described.

John is right. Here is what it should look like.

Frank, lock rings like you show are used on rims which have NO split. The tyre, tube and flap assembly simply drops over a circular rim with no split. The lockring forms the other edge of the rim. This is the widow maker combination which needs to be assembled in a cage. Should the lockring not be seated properly when the tyre is inflated, it can explode off the rim with potentially lethal force.

Allan from down under.

The dander expressed with these lock ring wheels is avoidable with a correctly formed ring properly locked in place before airing the tire.
I had call to replace a tire on such a TT rim. The ring was abused by the previous ignorant tire mechanic. It was closer to a pretzel than a round ring. After being made round again & cleaning the rust out of the rim, it locked in place as it should. It dosent take a BFH to set. It takes gentle prying with the correct irons. Its obvious when the ring is properly set home. I did stand to the side when airing up just to be sure.