The random tandem thus far

[Sidewinder Jerry]

Missing...? I'm not catching it! Would a video help?

I want you to turn it into a 3 speed shifter. Use a Strumey Archer S3X IGH. Then it be like having a 36t,48t,58t in the rear. From a dead stop, you could go up any hill at least 27 mph and have a level ground cruising speed of 43 mph.

 

[Wevil Kenevil]

Yes yes Jerry I am interested !

Do you have any suggestions on how to do this? Is there anything I can reference as a pattern or are you suggesting that I devise a way to do it?

Something like a jackshaft but on the drive side?

I have a RX-RFS STURMY ARCHER would that do the same thing?

 

[Wevil Kenevil]

Holy crap a 415 chain fits the sturmy archer sprocket!

It's a liiiiitle tight but I can work with it!

Jerry you're a genius! I never would have thought to do this... You rock bro!

 

[Tony01]

You still would need to figure an output sprocket and another dropout to mid mount it somewhere like a jackshaft. I’d just go direct drive until you get the entire build situated. The jackshaft hub will add a great deal of complexity.

 

[Sidewinder Jerry]

You still would need to figure an output sprocket and another dropout to mid mount it somewhere like a jackshaft. I’d just go direct drive until you get the entire build situated. The jackshaft hub will add a great deal of complexity.

WK is at a level he can handle complexity now.

 

[Sidewinder Jerry]

Yes yes Jerry I am interested !

Do you have any suggestions on how to do this? Is there anything I can reference as a pattern or are you suggesting that I devise a way to do it?

Something like a jackshaft but on the drive side?

I have a RX-RFS STURMY ARCHER would that do the same thing?

Here's the thread on the bike in the picture.

Cannonballs Abbynormal 3Speed.

Yes exactly so :) I'm wondering how it would go driving the hub with a belt and pulley instead of a chain. Finding a v-belt and pulley narrow enough would be a challenge. I'm not sure about tooth belts/pulleys. My own experience with Gates PowerFlex 7 mm belts is that they tend to be...

motorbicycling.com

If I'm remembering it correctly Cannonball modified a the direct drive (2nd) causing the hub to no longer coast but act like a fixed gear in that it could go in either direction. Meaning you didn't have to cross over to the right side to drive the IGH; both sprockets could be put on the left side.

The Strumey Archer S3X is a fixed geared IGH. The 3rd gear is the direct drive. Therefore there's no need to go inside of the hub.

1) ⅝\1
2) ¾\1
3) 1\1

You can get a U bracket from Staton Inc. I can also show you a way to make this bracket twice as strong using unistrut.

Staton Inc

U bracket 5" legs with three 17/64 holes and two 3/8" punched holes plus bracket plate with: 3 ea. 1/4-20 x 1-3/4" hex head bolts and 3 ea. 1/4-20 nylock nuts. This bracket is used on our Friction Drive kits and the Gear & Chain Drive kits.

www.staton-inc.com

 

[Wevil Kenevil]

WK is at a level he can handle complexity now.

You are very kind sir. I appreciate you both and the value you bring to this forum. You are both an asset... Thank you.

 

[Wevil Kenevil]

Here's the thread on the bike in the picture.

Cannonballs Abbynormal 3Speed.

Yes exactly so :) I'm wondering how it would go driving the hub with a belt and pulley instead of a chain. Finding a v-belt and pulley narrow enough would be a challenge. I'm not sure about tooth belts/pulleys. My own experience with Gates PowerFlex 7 mm belts is that they tend to be...

motorbicycling.com

If I'm remembering it correctly Cannonball modified a the direct drive (2nd) causing the hub to no longer coast but act like a fixed gear in that it could go in either direction. Meaning you didn't have to cross over to the right side to drive the IGH; both sprockets could be put on the left side.

The Strumey Archer S3X is a fixed geared IGH. The 3rd gear is the direct drive. Therefore there's no need to go inside of the hub.

1) ⅝\1
2) ¾\1
3) 1\1

You can get a U bracket from Staton Inc. I can also show you a way to make this bracket twice as strong using unistrut.

Staton Inc

U bracket 5" legs with three 17/64 holes and two 3/8" punched holes plus bracket plate with: 3 ea. 1/4-20 x 1-3/4" hex head bolts and 3 ea. 1/4-20 nylock nuts. This bracket is used on our Friction Drive kits and the Gear & Chain Drive kits.

www.staton-inc.com

This is brilliant! It may take some time, but I'm building one. Thank you for bringing this to my attention because I got that sturmy in a trade and it's just been sitting here and this is perfect!