Its just a few vocal guys who seem to think adding a motor to a bicycle doesn't make it a motorcycle.....but adding heavy tires do....whats a bicycle motor? whats a chainsaw engine.....does it .
Kingfish wrote:Two things:
Thud, thanks for the insight on the Continental Conti Force SM 120/70R 17 (found commonly on Amazon). Did you look at Excel Aluminum rims? They make a 17” x 2.5 wide 36-hole.
gensem, I would dig having Pilot Sporty here in the USA, but unless I become some uber-importer, it costs twice the value of the tire to try and get them in. But that is my first choice.
Stevil_Knevil wrote:Thanks to everyone that chose to vote and contribute to this open discussion!
The goal is to help define what tires will be considered safe and legal to run at these events.
Neil, the event organizer, indicated that the decision whether to open up the option of running moped tires would be up to the participants, and since there are more than a few racers here that have experience competing at his events on bicycle tires, YOU are the field and as such ..your feedback and suggestions are valuable.
-Compared to moped tires, bicycle tires are much lighter, and will provide lower rolling resistance largely due to their narrow contact patch.
-Compared to bicycle tires, moped tires are 3+ times the weight of bicycle tires, and have considerably higher rolling resistance, primarily because of their wider contact patch.
Opting for one or the other will have it's advantages and disadvantages. The biggest one that occurs to me is -while inherently safer and longer lasting in aggressive 40+ MPH riding- moped tires might prove to be a bit of a handicap because of the power lost in overcoming the added weight and rolling resistance that they provide, in effect, increased weight-to-power ratio.
Those opting for bicycle tires may even end up having the advantage
I voted Hell yes to allowing moped tires!
Re: So Cal Race on Oct. 22 at Grange
One of the few race rules is no motorcycle tires. Here is an update
allowing 20" Pirelli ML 75 tires to be used.
etard # 101 ebike rider at the June 18th Willow Springs Race
used these 20" Pirelli ML 75 Moped tires on standard bicycle rims.
Pirelli ML75 Scooter Tires - KneeDraggers.com
These tires are inexpensive and should be long lasting. One
of the reasons for not allowing motorcycle tires is the cost.
The Next SoCal Motor Bicycle Race is on Sat APRIL 7th 2012 at Grange.
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