Hey folks

I just got a fixed conversion used. The only thing I don't like so far is the ratio; 52:16 is a little steep for me when there are steep hills. However, the cranks on it are spiderless Sugino's. I've tried googling, and searching the sugino website and haven't found any information about them or what my options are for replacement chainrings. I know I could just get a bigger cog, but it's a kludge, and I'd prefer to not mess with the loc-tite and stuff now that it's all set. Has anybody ever heard of these spiderless Sugino's? If so, what kind of rings should I use?

Thanks a lot.

spiderless? does that mean that the chainring is solid?
if it is, you might have an old bmx crankset, if that helps at all.

(i vaguely recall someone on the boards who had a set, and was bummed because they were worn out, and he couldn't find a replacement anywhere, so you may be sol).

I've got a late 70s/early 80s Schwinn 3-speed at the house right now with a spiderless Sugino crank. In this case it seems that it is not like a BMX or single piece crank but rather like the drive-side crank and chainring are one piece ... or at least might as well be since I can't figure out how to take it apart. If it is old looking, check with the folks over in the classic/vintage forum or take it to your local bike shop that has the oldest mechanics who might remember this set up.

That being said, as long as whoever set up the rear wheel used the right kind of loc-tite, getting your cog off shouldn't be a big deal. I'm not a strong man and I got one off with just a little elbow grease a couple of weeks ago.

Or, if you have some money to invest, a new rear wheel with a fixed hub would be your best bet (IMO). That way you could get a bigger cog and have the peace of mind that comes with a "proper" set up. (Note: no offense to folks running the loc-tite hubs ... some of my best friends do this )

That would be me. Still bummed... sigh.

Do they look like this?


Or perhaps like this?


Either way, very awesome and very impossible to find. If you're not happy with yours, I'd bend over backwards to mooch them off of you.

m.

Could you imagine a 52T BMX! Kind of reminds of this little dude I met at a local bike show a few years ago..He was on a track bike (probably a 49cm size)...He was riding around in the test ride area (although the bike was obviously already his) and he was running 58/14....looked SOOOO weird...especially with how small the bike and the rider were!

Damn... and I feel wickedly overgeared at 78". What is that? 110"? 112"? Criminy!

m.

And here are the cranks on a 3rensho funny bike on eBay:


m.

Here's a shot of the bike, you get a good view of the cranks and rings. As you can see, the rings aren't disk-like, like mcatano's, but look like you could bolt on a couple more rings for a gearie if one was so inclined.

The rear brake was removed last night, the bars were flopped and chopped this afternoon, and I'm getting a new saddle in the mail. I'm not that lame.

i'm not seeing the image

Several companies made a "spiderless" crank, in which the big ring was actually attatched to the crankarm and the small ring then bolted to the big ring. Stronglight made one, and I've seen several Japanese ones. Short of destroying the crank, I don't think there's a way to get the big ring off.

These cranks were usually standard equipment on lower road end bikes, mid eighties. Despair not, you can probably find an old Sugino or Sakae crank with an actual spider cheap.

I love that 3rensho.

The 3rensho is awesome, except the bar setup. That's just whack. That's right. Whack. Get over it.

I have a crank like that... And failing the possiblity of attaching the correct size to the inside of that chainring (and changing your chainline), the only option for change seems to be bottom bracket/crankset replacement... In your case, if you have a square taper, you could probably just do the crankset.

I've got a 52t on my front, and its just fine, wear wise. Its a steel cottered crankset from the early 70s, and is holding up amazingly well.

peace,
sam