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The cranks are made of cheese and the taper is far worse than before, my last tsdz2build had to use the original cranks quality has gone to cheap and cheerful suspect the casting mould is near end of life For latest bike have gone back to a bafang mid -drive

FOUND THIS IF YOU ARE STILL LOOKING https://www.ebay.co.uk/itm/PF41-to-BSA-BB-for-Bfang-mid-drive-motor-100mm-120mm-Giant-Frame-and-alike/152646312455?hash=item238a6de207:g:BrsAAOSwEupZgKYe

A centre punch replacement, i like your style, the 90 degree chuck still does not always fit, start with a smaller hole and work up to the dia required. Drilling at an angle is great fun the needle file set and Dremel often get used deep joy the fun of fitting rivnuts

That looks like a wood bit :eek:

That looks like a standard 10 speed chain is it a kmc [standard] from new was he in the biggest cog was the chin to tight

Have tried to keep a normal bike several times ;) over the past year but it does not last, the spanners are out and a motor and battery ordered :oops: Have a normal in the garage at the moment only because the battery will not fit in the triangle and the auction ends tomorrow, and the next...

Great idea but by the time the line is completed [if it ever is ] the train ticket price will be so high we will find it cheaper by car or need to book weeks in advance to take a bike onboard

NOW SOLD [OVER ASKING PRICE];):D

Yes but the 90mm is a bbshd and a special order ,an expensive mistake if it will not fit will the chain wheel clear the stay ? and will the non drive pedal clear the stay if you need to pack / space the drive side and the motor is not centred most problems are easy to overcome but the pedal arm...

Suspect you will have to make one , plastic pipe cut in half is a good filler and a anti rotation bracket and 33mm washer on the other side[ see bafang spacer on ebay] This is why people struggle to convert a full suspension bike, its trial and error and hand made parts even the same model and...

First find what bb is fitted type -style -part number then try fsa website or the link in post 7 try luna cycles in the us they used to stock adaptors

The spacers / cups are available ebay etc or a machine shop can make them vfr400 posted a link The width is a nightmare if not correct with gear selection problems and chains falling off The just add spacers can make the problem even worse the cranks can even catch on the chain stays just...

The standard motor will not fit 73mm max bafang bbs03 100 mm required and probably a bling ring to get the chain line

Have built both a front wheel is simple and cheaper to do Mid drive is hard work:oops: and provides to much drive power , and requires a rear differential in the tricycle or the power delivery is through just one rear wheel:eek: With any tri wheel build think less about speed 5-8mph is fast...

Please post a picture of the bb was it a push fit or screw in

Yes thats not uncommon just made a motor mount to fit out of a steel plate and 33mm hole saw

Fitted discs to a trike, just added a t piece [ purchased a front and rear as a pair] and had to re-bleed but had to move the parking brake to a home made lever, should be the same with the 11s t piece and bleed m

Use the right gear and back off the power when you change gear, and one gear lower to hill climb ,you will not cause undue stress 18t is the middle ground ,still a hill climber with a higher top speed top gear will end up overdrive on flat roads

Check ebay a company called practical cycles https://www.ebay.co.uk/itm/NEW-Shimano-Nexus-Sprocket-Suitable-for-Nexus-and-Alfine-Hub-Gears-16-23t-cog/192195155049?hash=item2cbfb95469:g:fLwAAMXQMTlRbmwH

Yes a simple job to change the rear cog but the circlip takes a knack and its a much cheaper option a bit old but not rushed