Three bolt, 3" bolt pattern hub and I can't find a sprocket to fit!

luiscoll

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Bear with me, this is my first build and I may not know what I am doing...I recently bought a project cart and it has three-bolt hubs with a 3" bolt pattern. I am finding it impossible to find a #35 sprocket (60 - 72 tooth) or appropriate universal sprocket carrier (for a split sprocket) to fit this pattern. Does anyone have any idea what I could get to fit or were I could find a sprocket for this hub?
 

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itsid

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Welcome!
well maybe because that is not a 3" bolt hole circle at all.. it's a 88mm bhc ;)
(sometimes refered to as 89mm bhc... for some unknown reason )

diameter of bolthole circle for a three hole pattern is 2/root(3) * bolt hole spacing
so 1.1547 times boltholespacing for a bhs of 76.2mm that's 88mm

3 on 88mm is not an unusual size for ATV rims.
So chinese manufacturers parts lists is what you need to look at I guess ;)

'sid
 

luiscoll

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Anickode,

Thanks. I have considered drilling the holes. Always an option!

---------- Post added at 09:05 AM ---------- Previous post was at 09:03 AM ----------

Sid,

Thanks! I have ran across some Chinese ATV results in my searches. That makes those returns make sense!

I really appreciate the feedback. I will update if this allows me to find the sprocket I'm looking for.
 

itsid

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I haven't seen a sprocket for that bolt hole pattern

brake discs yes.. sprockets not..
On ATVS the sprockets don't sit at the wheel at all ;)

Where's that hub coming from, where doe it belong to,
and why don't you just pick a more common hub instead
(one that eases the finding of wheels and sprockets for example like 4 on 4 ;))

'sid
 
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