Banshee Scream downhill MTB conversion

[MadRhino]

With a heavy hub motor on a bicycle frame , I would have some custom made torque arms for each side, long enough to go far up the chain stays so as to lessen the torque loads on a bicycle's small , thin, drop outs.

The droputs of the Banshee Sream are huge and half inch thick. Tight fit torque plates 1/4 steel screwed on each side are best, either deep dropout, through axle, or thicker pinch type. Torque arms are common on low power, cheap kit builds. For high power, torque arm is the ugly temporary solution. Not that they can’t be made strong enough, but a high power build deserves the extra work to make it neat and reliable on the long term. The QS 205 is delivered with torque arm, yet best that can be done is throwing this to garbage and spend the time to make the real thing.

 

[exe]

The bike has too much of a fork for the speed that you plan. Sell that Monster T and replace with a lighter fork. It does look mint, you can have a good price, for this particular late model of the Monster T is very interesting for those building fast bikes.

The bike is good to build, hub or BB drive. Hub would make it simple and more reliable, while BB drive would retain the bicycle feel.

Does 'lighter fork" mean single crown fork? What speeds on paved streets can you expect to be the limit of single crown forks?

 

[MadRhino]

For a powerful bike that will ride 40 mph, a DH fork is not overkill. A Monster T is too much for the street, too big and heavy for the task. Many DH forks are much lighter, and stiff enough for the task.

It doesn’t mean that some single crown forks are not able, but you’d need one of the best and pay higher price than you can find an entry level or older racing DH fork for.