LightningRods mid drive kit

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r3volved   100 kW

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Re: LightningRods mid drive kit

Post by r3volved » Jul 04 2015 7:08pm

That looks great!
Are those mount clamps made of Urethane??

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Re: LightningRods mid drive kit

Post by LightningRods » Jul 04 2015 7:17pm

Yes they're cast semi-rigid urethane. It's a completely different material from the large driven pulley. This stuff is more like a car tire. It's slightly flexible so it conforms perfectly to the frame, gets a solid grip, and is nearly indestructible.
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Re: LightningRods mid drive kit

Post by FluxShifter » Jul 04 2015 7:52pm

Can you supply urethane mounts for your standard kits or is it specific for the Surly Big Dummy kit? I like how the power doesn't run through the bottom bracket. Nicely done Mike.
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Re: LightningRods mid drive kit

Post by LightningRods » Jul 04 2015 8:15pm

I would LOVE to supply urethane mounts with my standard kit. The problem is the incredibly wide range of tube profiles and diameters used on bikes today. If everything were old school round tube it would be a lot easier.

It's unfortunate that most bikes suck the rear tire right up against the seat tube. That's really where the mid drive should be. Cargo bikes and the LunaCycle as well as some cruisers are the best platform for this kind of drive.

Next up is the finished LunaCycle drive. That one is a big block. After that I'll be finishing up the Quilbix big block mid drive.
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Re: LightningRods mid drive kit

Post by spinningmagnets » Jul 05 2015 7:25am

A newbie battery question from jiggetyjoe was moved to the "general discussion" section.

http://endless-sphere.com/forums/viewto ... =3&t=70794

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r3volved   100 kW

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Re: LightningRods mid drive kit

Post by r3volved » Jul 05 2015 7:57am

I like the urethane idea. Definitely looks to be super rigid!
I don't think anyone's going to have any flex problems with this version...except maybe twisting their bike in half :D
This one is big block only, correct? Are you adding guards for either side or is she done as shown?

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Re: LightningRods mid drive kit

Post by LightningRods » Jul 05 2015 10:24am

I can't imagine this design flexing. All of the reduction loads are transmitted straight down into the triangle and the final drive load is at the base of the triangle right where it fastens to the frame. In addition to that the chain to the chainwheel is pulling directly opposite to the final drive chain. It's stout.

There will be large aluminum guards on both sides of the drive. The rider's feet are well forward of the drive parts but people often carry their kids on the backs of their cargo bikes. The owner of this Big Dummy who was good enough to loan it to me for prototyping is dying to get it back and go riding. He'll get the guards in a couple of weeks when they're ready.

The LunaCycle drive will be big block only because of the width of the Luna frame. It would be more difficult to fit the narrower small block to that frame with a 100mm BB than the big block. This drive for the B-D will be small block only at first because of it's 68mm BB and other frame restrictions.
"I don’t mind that they stole my idea, I mind that they don’t have any of their own.”
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Overclocker   10 kW

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Re: LightningRods mid drive kit

Post by Overclocker » Jul 06 2015 1:37am

Image

oh btw your logo provided a nice mounting hole for the stock tensioner. saved me from having to drill 8)

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Re: LightningRods mid drive kit

Post by Archer » Jul 06 2015 5:07pm

LR,

Great work on the Big Dummy! Your the Man! Hey might you have a pic or 2 of the whole bike? Curious what it all looks like together.

Tim

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Re: LightningRods mid drive kit

Post by LightningRods » Jul 07 2015 8:27pm

I don't have the entire bike, only the frame. Here is the mid bike drive on the frame ready to ship. I'm sure that we'll be seeing photos of the complete bike soon enough from Dean. He already has a Rohloff hub lined up from another B-D. Like I told him, he's going to have a Ferrari station wagon.

Image
"I don’t mind that they stole my idea, I mind that they don’t have any of their own.”
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Re: LightningRods mid drive kit

Post by LightningRods » Jul 07 2015 8:31pm

Here's a photo of Zack J lined up for his moto at an e-MX race in Hawaii. I have a soft spot in my [head] for motocross because I raced as a young'un. The idea of making a MX bike that doesn't make noise and doesn't stink is irresistible to me. I have to do it!

Image
"I don’t mind that they stole my idea, I mind that they don’t have any of their own.”
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Re: LightningRods mid drive kit

Post by Deanwvu » Jul 08 2015 6:38am

LightningRods wrote:I don't have the entire bike, only the frame. Here is the mid bike drive on the frame ready to ship. I'm sure that we'll be seeing photos of the complete bike soon enough from Dean. He already has a Rohloff hub lined up from another B-D. Like I told him, he's going to have a Ferrari station wagon.

Yep. I'll have the bike around the 20th, and do my best to build it up by the next weekend. Photos to come.
http://www.endless-sphere.com/forums/vi ... 28&t=70368 My Big Dummy drive by LightningRods.

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Re: LightningRods mid drive kit

Post by recumpence » Jul 08 2015 7:02am

LightningRods wrote:Here's a photo of Zack J lined up for his moto at an e-MX race in Hawaii. I have a soft spot in my [head] for motocross because I raced as a young'un. The idea of making a MX bike that doesn't make noise and doesn't stink is irresistible to me. I have to do it!

Image
That was my intent with my Motoped. It, indeed, rides like a 125 but weighs as much as a 60.

Build a bike like this. You will love it! :mrgreen:

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NordicNorm   1 mW

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Re: LightningRods mid drive kit

Post by NordicNorm » Jul 08 2015 4:58pm

LightningRods wrote:
Image
NICE! Looking fwd to build & reports.

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Re: LightningRods mid drive kit

Post by stonezone » Jul 08 2015 5:10pm

recumpence wrote:
LightningRods wrote:Here's a photo of Zack J lined up for his moto at an e-MX race in Hawaii. I have a soft spot in my [head] for motocross because I raced as a young'un. The idea of making a MX bike that doesn't make noise and doesn't stink is irresistible to me. I have to do it!

Image
That was my intent with my Motoped. It, indeed, rides like a 125 but weighs as much as a 60.

Build a bike like this. You will love it! :mrgreen:

Matt
I couldn't be happier with my setup. Limiting the BB around 50-60A keeps it running cool and still more than enough power (from 0rpm) to either tractor, or mach up anything. right now with 20s and 44t/20t it tops out around 28mph which is perfect. Even at 15s (20mph) it was perfect for all our trails, only on the road did i want to go faster.
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r3volved   100 kW

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Re: LightningRods mid drive kit

Post by r3volved » Jul 08 2015 5:44pm

Sweet
That's almost my exact setup except a 16t rear. I had the same intent with my build as well, lol. For off-road, I had to set up a tuned down setting as it's geared well for commuting but too fast on trails.
I'm broke down though right now waiting for jack shaft axle. Too aggressive *blush*

How did it performed against the gassers?
You were literally racing with them?

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Re: LightningRods mid drive kit

Post by stonezone » Jul 10 2015 7:36pm

yeah i broke my jackshaft too...

We raced the same course as the motos, and had our own class. They started each class every 60 seconds so i caught up pretty quick. The G2B2 is absolutely competitive in single track with big bikes, but that's only speaking for the C riders.... it was super cool, but the track was dusty and chewed up... not what i'd be riding normally.
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Re: LightningRods mid drive kit

Post by Andytheswede » Jul 13 2015 2:48pm

So mike
Any pics on the LunaCycle?

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LightningRods   10 MW

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Re: LightningRods mid drive kit

Post by LightningRods » Jul 14 2015 9:27am

The LunaCycle is going together over the next couple of weeks. I have all of the parts made. I just have to get past the crush of regular mid drives to assemble everything. My assistant has been out for over a week so it's been extra crazy here.

The Surly Big Dummy mid drive is going back to Dean on the east coast this week. We should be hearing from him on his build very soon. Because I used his bike frame for development I actually get to ship a kit fully installed on the bike. A rare treat for me. Dean won't have much to do except to install his Rohloff and final drive chain and hook up the wiring.

I'll take a bunch of photos of the LunaCycle as it comes together. I am DYING to get out riding while we still have our good summer weather. The cobbler's children really do have no shoes.
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Re: LightningRods mid drive kit

Post by Nelsjourney » Jul 17 2015 10:00am

Semi rigid urethane mounts that isolate the drive and the frame. Pattern cast on frame for a perfect fit. Backed with steel plate.
Mike is that steel plate reversible on the BD. I need to attach the upper mount to the front instead of the back tube. My cargo bike (Kona Ute) does not have that back tube. deanwu posted preliminary pictures of the motor mounted on his BD without the pulleys installed. It appeared that the steel sheets came in two sections. If they do, can I just reverse the upper sheet in order to have the bracket (attaches to the tube in back) face the front tube so it can be attached to the front tube? I wouldn't like to attach it to the bottom bracket if I can find a way to mount the kit in the manner in which you designed it for the BD.

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LightningRods   10 MW

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Re: LightningRods mid drive kit

Post by LightningRods » Jul 17 2015 10:24am

I'd like for this mid drive to be an easy fit on your Kona Ute but I don't think it's going to be that simple. If you just reverse the side plates to move the rear mount to the front it would also change the position of the final drive sprocket. The Big Dummy rear frame tube has an angle that the mount matches. If your seat tube is a different angle relative to the bottom tube (likely) things are not going to line up well.

Can you take a profile shot of your bike similar to the one of the Big Dummy posted higher on this page? I can use that to see how much work is going to be needed to adapt the kit to your frame.

Ideally I'd like to have versions of this drive for the Big Dummy, Kona Ute and Yuba Mundo.
"I don’t mind that they stole my idea, I mind that they don’t have any of their own.”
-Nikola Tesla

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Re: LightningRods mid drive kit

Post by Andytheswede » Jul 17 2015 10:37am

So the plan is to sell the Lunacycle complete,bike and engine?

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LightningRods   10 MW

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Re: LightningRods mid drive kit

Post by LightningRods » Jul 17 2015 10:49am

The LunaCycle ships from the LunaCycle warehouse in California, the mid drives ship from my shop in Oregon. I know that Eric plans to sell my drives through his online store. I don't know if he plans to ship bikes fully assembled with the drives on them. It makes more sense to send the smaller drives to the location that the bikes ship from rather than the other way around.

I'll check with Eric and see if he plans to offer a turnkey solution.
"I don’t mind that they stole my idea, I mind that they don’t have any of their own.”
-Nikola Tesla

Lightning Rods Web Site http://www.lightningrodev.com
Lightning Rods Facebook Page https://www.facebook.com/pages/Lightnin ... 4531978401

Andytheswede   100 mW

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Re: LightningRods mid drive kit

Post by Andytheswede » Jul 17 2015 10:52am

Googled LunaCycle and didnt find anything bicycle related,thats why I asked.

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LightningRods   10 MW

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Re: LightningRods mid drive kit

Post by LightningRods » Jul 17 2015 10:59am

Yeah I just checked and you're right. Eric is selling the bikes but not off of the site yet. He has at least my mid drive version and a hub motor version in development. He may be holding off until both are fully developed and available in production.

I'll bug him now and see if I can get him to post here.
"I don’t mind that they stole my idea, I mind that they don’t have any of their own.”
-Nikola Tesla

Lightning Rods Web Site http://www.lightningrodev.com
Lightning Rods Facebook Page https://www.facebook.com/pages/Lightnin ... 4531978401

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