I am going to need a new rear sprocket for my Pre-65 Trials bike soon. It's a BSA B40 with Triumph Cub wheels, using 428 chain. I am currently running a 76 tooth sprocket, and had once purchased a replacement rear from PMP sprockets in Wylie TX. I was very pleased with. Sadly, they are no longer in business, and from all I can tell, the business was bought & operated under Superior Sprockets name. When I follow down that rabbit hole, their website is "Temporarily Closed". Does anyone have any experienc with other custom sprocket makers who might still be in business? I'm going to be in need very soon! 

Thanks

thats a big sprocket? on my cub, I just bought a sprocket from an engineering company [sprocket blanks] these come normally with a 25mm centre hole that you just turn out with a lathe to suit the hub. plenty of suppliers in england for specialist stuff !, would do a search on ebay [my favourite supplier] for a blank and then any engineering shop would be able to machine hole, you then clamp your old sprocket to it and drill mounting holes.unless you want to go to the expence off shipping one over. Just looked on feked.com website [ex sammy miller stuff] who do stuff for classics and they do B40 fronts in 13 to 16 tooth at £19.95, and rears up to 66 tooth in 428 at £54.95..note rear listed is for a cub hub. regards from england, hope this helps.

 

Edited September 27, 20214 yr by trialman
additional information

1 hour ago, jberg98n said:

I am going to need a new rear sprocket for my Pre-65 Trials bike soon. It's a BSA B40 with Triumph Cub wheels, using 428 chain. I am currently running a 76 tooth sprocket, and had once purchased a replacement rear from PMP sprockets in Wylie TX. I was very pleased with. Sadly, they are no longer in business, and from all I can tell, the business was bought & operated under Superior Sprockets name. When I follow down that rabbit hole, their website is "Temporarily Closed". Does anyone have any experienc with other custom sprocket makers who might still be in business? I'm going to be in need very soon! 

Thanks

 

Contact a friend of mine: Richard Yamane, via Facebook. He's in the USA and works on a range of classic bikes. He should know who can help you with a sprocket. 

https://www.facebook.com/richard.yamane.7

You are from NM aka New Mexico right? 

Some fellows at KTMTalk refer and recommend them for sprockets in the US:

http://www.rebelgears.com/

You might ask them as I have followed news threads from KTMTalk they do custom sprockets up to 124 teeth and you can get all kind of colors holes also to different chain sizes and so on. 

Looks like plenty of life left on that sprocket. How many years did it take to wear it that far? 

14 hours ago, jmatch said:

Looks like plenty of life left on that sprocket. How many years did it take to wear it that far? 

Really? Looks quite shark-toothed to me. Not saying it wouldn’t last a while yet, but on a scale I’d err closer to the ‘replace me’ end. 

Hi jberg98n... curious as to who you finally went with  for a rear sprocket? I am trying to do a similar thing for my 63 C15s and need to re-gear it in a big way.Also what size sprocket do you have on the gearbox end?

Thanks Sam