[order99]

Originally Posted by nfj

Here You have a quick "ellert" it runs 210Km/h

http://www.youtube.com/watch?v=COqUE0pSlUA

I dont think Marks HUB motor can match that ? (haha)

Dear Lord I hope not!

[markcycle]

We have focused of road motorcycles to date but now have decided to begin testing and offer for sale a Dirt bike version of the 600 series motor. This is our 603 model rated at 7 RPM/volt unloaded
In smaller bikes such as the YZ 125 the advailable battery real estate is much smaller than on a road bike making the advantage of a wheel motor very attractive. Of course the added unsprung weight is the trade off. I'm hoping the trade off doesn't overwhelm the advantage testing and rider feedback will answer the question.
In my evaluation and others who have tested my bikes we are surprised at how little the unsprung weight hurts the handling of the bike. What has to be separated in the handeling evaluation is the centrifugal weight, the weight further out that is multiplied by the spinning mass, This centrifugal weight has a much bigger impact on handling than the mass that is in around the axle.

We have begun testing with a 36 volt lead acid pack with a 100 volt Lithium pack on order



IMG_0009.jpg

If anyone wants to test ride any of my bikes, just email me and lets set up a meeting.

Mark

[JRP3]

Sweet, have you addressed the waterproofing issues we talked about early on?

[markcycle]

Originally Posted by JRP3

Sweet, have you addressed the waterproofing issues we talked about early on?

The standard product is splash proof. I can deliver a special that is water proof. Adding the seals needed would add about 20mm to the width of the motor and add some cost. True underwater operation would require ceramic feedthroughs for the wires again all doable.

Mark

[JRP3]

Good to know. I've always wanted to do a chain less 6 motor independent suspension version of my AMPhibian Just have to figure out a way to afford it
What about silicone on the mating surfaces of the stock motor, and a glob around the wires, for small stream crossings on a dirt bike?

[markcycle]

Originally Posted by JRP3

Good to know. I've always wanted to do a chain less 6 motor independent suspension version of my AMPhibian Just have to figure out a way to afford it
What about silicone on the mating surfaces of the stock motor, and a glob around the wires, for small stream crossings on a dirt bike?

For six wheels I can give you a great package price which also includes controllers. If your serious lets talk off line.

Thats basically what we are doing for dirt bikes plus sealing all the screws

Mark

[Woodsmith]

The dirt bike looks very interesting.

Have you thought about a two wheel drive version? That would add an extra twist (pun intended) to independent throttle control for rock hopping.

[markcycle]

Originally Posted by Woodsmith

The dirt bike looks very interesting.

Have you thought about a two wheel drive version? That would add an extra twist (pun intended) to independent throttle control for rock hopping.

Yes but I would use a lighter narrower less powerful motor in the front that would better fit a fork.

Now if someone wanted to commission me to build such a bike you could see it a lot sooner

Mark

[JRP3]

Originally Posted by markcycle

For six wheels I can give you a great package price which also includes controllers. If your serious lets talk off line.

Someday. No time or money right now or in the foreseeable future. Still working on my AC Fiero.

[gor]

Originally Posted by markcycle

We have focused of road motorcycles to date but now have decided to begin testing and offer for sale a Dirt bike version of the 600 series motor. This is our 603 model rated at 7 RPM/volt unloaded

In my evaluation and others who have tested my bikes we are surprised at how little the unsprung weight hurts the handling of the bike. What has to be separated in the handeling evaluation is the centrifugal weight, the weight further out that is multiplied by the spinning mass, This centrifugal weight has a much bigger impact on handling than the mass that is in around the axle.
....
Mark

M. what do you meant by centrifugal weight, spinning mass and unsprung weight - and their affect on dynamics?
thank you
p.s. also concern- would unsuspended (except thin tire) motor stand constant beating (longevity)
(though impact of hitting potholes at speed on road bike - no picnic either)