strength

I have seen many of you build new frijoles. Is the design of the frame weak enough that you would regret putting a 140cc Honda clone shifter engine in it? I'm dreaming about something for next years' build off if there is one. :)

Can a BZ3 block be taken out to 3.5" bore? I keep reading conflicting things. Also does anyone have pics of where these blocks get welded for strength? Any shortcomings of this block that I should know about? Will this block take 50hp? Any recommendations on brand as far as side covers or...

Is there a CVT/Variator/TAV2 that can handle 100hp+? Who makes these? QrxnS-xz-iI a66vrJvwsic

I know this topic has been covered alot but after searching through the forum I didnt find the answer I was looking for. If I remove the gov in my clone what are the chances of the stock rod actually failing? I was reading about how the load capacity on the motor plays a big role on how many...

I picked up a project bike over the week-end. It's an old Sears rigid, with a scrub brake. Even though it has the nicest pivoting shoe, scrub brake I've seen so far... It is typical of scrub brake bikes & the front forks have been bent back towards the frame. Sometime in the bikes past. The...