New Skip Tooth Sprocket for Modern Shimano

[Road Master]

This guy listed these on ebay and I think it's great - I needed one of these for my RRBBO5 bike when I purchased new wheels with a Shimano rear hub. I wanted to remain skip tooth operation so I took an 18 tooth 1/2" pitch sprocket and cut off every other tooth to make it a 9 tooth functional with my skip tooth sprocket and chain. My main concern was that since the 1/2 " sprocket was not as thick as a factory 1" sprocket that there would be unnecessay wear with the skip tooth chain being a little loose on a cut down 1/2" sprocket.

So I emailed this guy and explained all that and asked what thickness his are. He replied that his sprockets that fit the newer style Shimano rear hubs are the same thickness as the original factory made 1" sprockets so as to elimanate the premature wear associated with the mismatch in thickness - sounds great! Currently he only makes one in 9 tooth. My guess is if there is enough interest he may add different sizes to the line.

So for all those builders that were wondering how to convert their modern style Shimano rear hubs to a skip tooth configuration here's your answer. BTW, Memory Lane is also selling these from him.

http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... MEWAX%3AIT

 

[Uncle Stretch]

That is a good deal. I would have a hard time building one that cheap. If you stick it on a Nexus 3 speed the gearing wouldn't be a problem.

 

[yeshoney]

The issue with these for the time being is that a 9tooth and a 26 tooth front is a very wide ratio, which means you better have quads of steel to pedal up the slightest incline. 9 tooth was meant to go with a 22 tooth womens bike. i would be all over these if they came in 10 or 12 tooth!

Joe

 

[yeshoney]

Unc,
My experiences with the Shimano gearing are the following, unless you are talking about a different type of SHimano hub. I tried: 20 tooth rear with 52 tooth on front with a SHimano Nexus 4 speed and could only use 1st gear on the flats and could get to 3rd on a good down hill, but had to return to 1st rather quickly. I also tried a Nexus 3 internal hub with an 18 tooth with a 48 front and could use 1st and 2nd, but 3rd was a tall gear and pretty much useless. The above would equate to 10 and 26 Skip and 9 and 24 skip. I guess the difficulty pedaling could also be my hilly terrain up here in the Northeast vs. your relative flatness in Texas.

BTW grinding off every other tooth will not, in my experience, make your chain prematurely wear out. I rode 25 miles on my Bud Truck - Nexus Internal 3 speed, 26 Skip front and 22 (11 skip rear) and did not even have to adjust it after my ride. AND 3rd gear using this ratio is completely useless.

Joe

That is a good deal. I would have a hard time building one that cheap. If you stick it on a Nexus 3 speed the gearing wouldn't be a problem.

 

[Arreaux]

He might be doing 9 tooth sprockets, because they can be chucked up in a lathe, which would make me believe a 12 tooth should be possible too. I noticed the center section thinned a bit to fit on the hub.

 

[Uncle Stretch]

I see your point on that Joe. I looked and a 26 front against a 9 back would be a long way from the 44 to 22 that I normally run. The only other option would be to put one on a 7 speed and then there might be enough gears to make it work. Not having done that either , you could just wind up with a bunch of gears that would be real hard to pedal with. Was a pretty sprocket though

 

[Road Master]

I guess this was my mistake because I didn't emphasize that in theory I endorsed the use of this on a single speed hub, not a multispeed, which is the application that I used it on for my buildoff bike. From the classic (1930s - 1950s) single speed boys bikes that I have purchased a 26/10 tooth combination was normal which required the 26" length chain. I'm running 26/9 on my buildoff bike and that is fine for gradual hills which is all we have in the area. The Flying Heart CWC sprockets that I have are all 24 tooth and I think a 24/9 is pretty close to a 26/10 which will still work fine on a single speed. Multispeed hubs are a completely different class of hub in my opinion - currently all my ballooners are single speed.

I would like some input on sprocket size (in teeth) that would be common for multispeed hubs so that I can pass it along as suggestions for future production.

Also I'd like to add that IF there was premature wear on a skip tooth chain due to the use of a thinner sprocket over a reasonable period of time, say 3-5 years, I feel I would be much farther ahead purchasing a $15 sprocket than a replacement skip tooth chain.

 

[Uncle Stretch]

I have lots of 3 speed nexus wheels and three 7 speed nexus and one 7 speed sach's. I have found the best range is a 22 back and a 44 front . on a skiptooth that would translate to a 22 front and an 11 back. When I lay a 26 tooth skip sprocket over a 44 tooth regular one the size difference is alot. I really can't see any advantage to use a skiptooth, other than the nostalgia. Guess thats enough around here. :lol: :lol:

 

[Road Master]

I have lots of 3 speed nexus wheels and three 7 speed nexus and one 7 speed sach's. I have found the best range is a 22 back and a 44 front . on a skiptooth that would translate to a 22 front and an 11 back. When I lay a 26 tooth skip sprocket over a 44 tooth regular one the size difference is alot. I really can't see any advantage to use a skiptooth, other than the nostalgia. Guess thats enough around here. :lol: :lol:

Yep, a lot of us just like the looks of a skip tooth drive train. I guess a case could be made for it being heavier duty but nostalgia is most likely the biggest reason.

 

[Uncle Stretch]

For sure the guy makes a nice product , and the price is right. Not using them I can't say what else he should make to cover the need.

 

[slick]

Does anybody have the contact info for these sprockets? He used to have them on ebay but havn't seen them in awhile and now I need at least 6 of them!!!! Help me out guys!!!!

 

[layflat78]

Does anybody have the contact info for these sprockets? He used to have them on ebay but havn't seen them in awhile and now I need at least 6 of them!!!! Help me out guys!!!!

+1

 

[65Slick]

You might contact the owner of this shop in Lincoln NE, http://re-cycledbicycle.com/ I talked to him about a year ago and he mentioned that he knows the guy making the skip tooth gears.

Marty

 

[65Slick]

Are these the ones you are looking for?

http://www.ebay.com/itm/Skiptooth-S...ultDomain_0&hash=item4cfb26213f#ht_500wt_1413

Have Fun!
Marty

 

[slick]

Those are the ones!!! Thanks! I just emailed him to see if he has more.

 

[Rustinkerer]

Nice, but he needs to get crackin' on some 11's for us old guys! :lol: -Adam