Dempster wheel or not?

[windybob]

If any knows what this single rivet wheel section is, would be interested to know. Looks like a Dempster (also in picture) but has a single rivet clip, and the bead is close to the edge. I have never seen a Dempster like this, but maybe off a really old one? Old ones don't have the bead, I''m sure, or at least I have seen a lot of old ones without a bead. Another kind of windmill? The clips look the same, the rails look the same, same size as a known Dempster next to it. Also the small clip is on the backside instead of front.
Kind of interesting. Thanks.

dempster sails 3.jpg

dempster sails 2.jpg

dempster sails 1.jpg

[Windcatcher530 Dan]

Kinda looks like challenge. Can you take a better pic of the sail tie.

[windybob]

let me see...

[windybob]

I think you are right Dan. From what I can see they look like the clips on a 27.

challenge sail 2.jpg

challenge 27.jpg

[Windcatcher530 Dan]

Yep sure looks like a challenge sail tie. That's my vote !!!

[Challenge 27]

There is a feature assures that this is a Challenge 27 wheel.

Note the 2 beads on the outer half of each blade that are at a right angle to the wheel rims. Due to the horizontal positioning of the wheel, in this instance they will appear to be "under" the wheel clips. I do not know of any other windmill company that did this.

Not all wheels of C-27s will have this feature. I believe it was introduced at some point in the production run of the C-27 for wheels 8 foot size and up; and some early C-27s do not have it. It seems that the wheels of the 6 or 6 3/4 foot size C-27s never this feature, or else I have never seen one that did.

Challenge 27

[windybob]

I remember someone talking about that years ago, maybe it was you. Thanks for the reminder.