Drive flange differences

[dirty_rat]

I am trying to determine what the differences are on the rear wheel drive flange (sprocket carriers) on the various cushioned hub bikes (not including the 175, 250's or 80). So far I have determined there were the following part numbers.
929285 - used on the Ace 100 B+, and the Super Rat models 93A and 93B.
949285 - used on the Wombat models 94 and 94A and the Combat Wombats.
949285 - also used on the Dirt Squirt model 96, but sometime mid production the flange was machined to accept 2 bearings instead of one, but part number was not changed.
949285 - also used on Super Combat, model 97
989285 - used on Super Rat model 98 (part number changed because of color change?)
999285A - used on the Road Toad model 99, Dirt Squirt model 01, Road Toad model 02 and Wombat model 03. (Don't know why part number stayed the same as some had aluminum colored hubs and others had black hubs)

Anyways, to assist me, if you have one of these drive flanges handy, could you snap a photo and take two measurements for me. The measurements I need are:
1 - overall height on flange. (place on flat surface and measure in mm's height. One in photo measures 67mm)
2 - Height of sprocket mounting surface from base. (One in photo measures 53mm)
See attached photos of what I am looking for. Also advise if it is a single bearing flange or two bearing flange.

Thank you.

[hodakamax]

Been through this one after tearing down two Ace 100B+ and three 94 Wombats and throwing all parts in the parts washer. Sheesh, about never figured this out! This picture might help. Maxie

[dirty_rat]

Thanks Max. The 92 flange looks a little different than the flanges I have. Specifically, the sprocket mounting area is almost even with the main flange body, where the 94 flange the sprocket area is raised a few mm's higher. That would also account for the different lengths of mounting bolts.

[hodakamax]

Getting educated with my newest project using a 94 frame and 92 engine from spare parts of both. Down to a 92B+ hub and using this 3mm spacer from a 93B, a cush hub Super Rat plus offset front sprocket to move the chain out from the tire a bit. 94s had bigger chain which needed sprocket moved out a little more. Complicated and I'll still have to see if this all lines up. I'll try to keep you posted!

[taber hodaka]

Max isn't the 92B+ and the 93B the same spacer / and cush hub and chain?? Clarence

[hodakamax]

Max isn't the 92B+ and the 93B the same spacer / and cush hub and chain?? Clarence

Looks like they have the same drive flange but only the 93 has the spacer. Both use 420 chain, 93 has offset front sprocket, 92B+ a flat countershaft sprocket. Clarence! What's happening up North? Maxie

[Dale]

This conversation caused me to go look at the parts diagrams... now I am even more confused!
They do show that only the 93B uses the spacer on the flange. For the countershaft sprockets, the pictures show that the 93b uses the offset sprocket and the 92B+ uses a flat sprocket however, the parts numbers for these sprockets are the same. What???!

[dirty_rat]

And that is exactly why I decided to look into the differences with all the different flanges. I have the flange for the models 94, 95, 96* and 97*, which are all the same part number (949285), and the same dimensions; even though sometime during production of the Dirt Squirt (and used on all Super Combats) the flange was machined to accept two bearings instead of one. I think the only difference with the flange used on the model 98 Super Rat is that it was painted black, hence the new part number 989285.
I also have a flange from I think an 03 Wombat, but I don't know for sure. That is why I was hoping someone could photograph one and give me it's measurements.

Thanks all.

[Joe Ormonde]

I think that the spacer and offset sprocket used on the 93A and 93B was because of the Chain Guard. It has more clearance for the larger 3.25x18 tire so the spacer and offset sprocket were used to keep the chain from digging into the Chain Guard. Terry sells the Drive Flange #929285 for $14.95. It comes with the bearing and seal. Joe

[taber hodaka]

Stock chain and sprockets on a 93B and the 92B+ was 423. --------- Clarence

[Dale]

Stock chain and sprockets on a 93B and the 92B+ was 423. --------- Clarence

That makes sense. The early model 94 Wombats also came with 423.