Helo

[Hodakaguy]

Hello my name is Brian. Building my first gas bike. I will have lots of questions! My rear hub measures 1.1450 and I need to know what size hub I need

 

[HumanPerson]

http://www.mmbikeparts.com/Manic-Mechanic-Freewheel-Conversion-Reducer-p/free-wheel-reducer-1.htm

will that help?

 

[Frankenstein]

I think he means he needs an adapter that clamps to the hub and holds the left side sprocket without a rag joint.

 

[HumanPerson]

I think he means he needs an adapter that clamps to the hub and holds the left side sprocket without a rag joint.

That reducer bushing would go with one of these http://www.mmbikeparts.com/Adapters-Sprockets-s/135.htm
At least that is what the bottom of the page says, hopefully i didn't send them to the wrong place.

 

[Frankenstein]

You'll need a 1 1/8 inch adapter, it's about a single mm smaller than the hub but at that level it won't make a difference.

 

[Frankenstein]

Actually not even, about 3/4 of a mm too small lol

 

[HumanPerson]

Not sure, but if he were to call them, i wonder if they would just fabricate what he needs
Not sure even if Brian is in the US

 

[Hodakaguy]

Well I tried to call. No answer so I left a message. I remeasured the hub... again!! My high quality Harbor Freight scalpers do measure .. after I zero them constantly measure 1.129". Oh... btw I live in Syracuse, NY.

 

[Hodakaguy]

Gas bike sells 3 sizes... 1", 1.5" & 1.8" ?? I must have an odd size on my Trek?
https://www.gasbike.net/collections...oducts/44-tooth-cnc-sprocket-adapter-assembly

 

[HumanPerson]

Thinking back when i bought my cnc sprocket adapter and reducer bushing and sprocket from mmbikeparts, i had to use the dremel to shave a bit off the inner curves of the bushing reducer to get it to fit.
They have a good line of those sprockets and adapteers that you're looking for, shop around, try ebay?
Sometimes it just takes an extra 10 or 15 minutes to modify some of these parts and that the fun part
Ride Safe