You are so right. Grubee is about to corner the market and may be very difficult to deal with. At one time,I'm the guy Diesel Tech was referring to Mike. I bought a replacement 100T pulley because my original Chinese one had a huge wobble in it. The new pulley went right onto my output shaft with no sanding. This pulley will never wear out and you can get the belts anywhere. The problem you and I will probably have in the future will be not being able to get a replacement clutch bell with pulley. GruBee has a few but will not sell them to anyone but his previous customers. When they are gone there will be no more. Be kind to your clutch. You and I will end up getting a new tapered shaft engine when this happens. I doubt if there is a big enough market for someone to manufacture this then waiting for people needing replacements.
staton has far superior clutch bells with shafts you just have to swap out the bearings to fit a 1/2" or 5/8" shaft that is on the clutch bell then you can easily find t-belt pulleys 20t or smaller or larger to give you more options on gear reduction.(I would just double check the length of the shaft before buying bearings and the t-belt cog/pulley)You
You are so right. Grubee is about to corner the market and may be very difficult to deal with. At one time,
BoyGoFast carried some parts for the 15mm ebay kit but no more. Eventually, like you say, we'll all be
dealing with Grubee at very high prices.
Good job dude!Today, I began installing the Grubee 80T pulley on the Chinese belt drive.
It was relatively easy, just a little sanding of the shaft and the inside of the
pulley and it went on. But a I ran into a problem: the belt I ordered
which was called out by bicycle-engines is too small, the Grubee
belt drive is slightly different than the Chinese drive, so I ordered
a larger belt. Inspected the drive, it was in good condition. Also
inspected the Olite bushing I installed and was surprised how much
lubrication seeps out of the bushing. Everything was in good condition.
I am excited about the final bike. After I finished, it
will be a very sweet 4 stroke, with a top speed of about 32 mph -
nice! It should be a reilable four stroke, for great cruising.
32 mph at 6785 rpm, not bad at allI just finished testing the bike and it runs so smoothly. I believe I
hit the sweet spot as the engine at this ratio has enough power
to take off from a stand still and at higher speed the engine runs
at lower rpm and it's very quiet. I used the 80T grubee pulley
for 4:1 on the belt drive and 41T on the rear sprocket, for a top
speed of about 32. I believe this setup is reliable and could
cruise all day at 18-22mph.