FUTR Beta with Lightning Rods Mid Drive

Discussions related to motors other than hub motors.
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PRW
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Re: FUTR Beta with Lightning Rods Mid Drive

Post by PRW » Sep 27, 2017 9:40 am

Baron wrote:Any pics of the final build?
I don't have the frame/ motor back yet, Lightning Rods is having a rear wheel sprocket laser cut. I will update when I get everything back!

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LightningRods
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Re: FUTR Beta with Lightning Rods Mid Drive

Post by LightningRods » Oct 01, 2017 9:30 pm

Here is the stainless steel rear sprocket with Shimano spline spacers that I'm working on. I'm traveling at the moment but will have these finished very soon.

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The FUTR Beta drive is finished other than this rear wheel sprocket.
"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: FUTR Beta with Lightning Rods Mid Drive

Post by PRW » Oct 01, 2017 10:05 pm

Looking stunning, LR! :D

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Re: FUTR Beta with Lightning Rods Mid Drive

Post by LightningRods » Nov 26, 2017 5:29 pm

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"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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Re: FUTR Beta with Lightning Rods Mid Drive

Post by JtHaas » Nov 28, 2017 1:30 am

Jesus christ that's perfect. I'm just gonna leave this post as a placeholder to come back to. I'm looking forward to seeing that bike completed and what it will be capable of.

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Re: FUTR Beta with Lightning Rods Mid Drive

Post by LightningRods » Nov 28, 2017 9:24 am

The owner of the bike picked up the frame last week. He promised to send completion photos.

These Betas may not have the battery capacity of some of the other "box bikes", but it has to be the best looking. I really had fun working on this one.
"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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Re: FUTR Beta with Lightning Rods Mid Drive

Post by skeetab5780 » Nov 28, 2017 9:31 am

wow that bike is freaking awesome! Well done

it is going to be the best ride ever compared to a hub

pedal capability and torque all in one neat little package!

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Re: FUTR Beta with Lightning Rods Mid Drive

Post by PRW » Nov 28, 2017 11:15 am

yes, I collected the bike last week during a trip down the West Coast from Seattle to San Francisco - it was great to meet Mike in person, to see his immaculate workshop and all the exceptional work he is doing.

I will post up pictures once completed - I already have all the parts, including a 20s6p 30Q battery from Allex. The only constraint is time - I am off to Australia for a couple of weeks - but if I can get the rear wheel built up while I am away, I will build it up in January. Really looking forward to this one!

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Re: FUTR Beta with Lightning Rods Mid Drive

Post by LightningRods » Nov 28, 2017 11:35 am

It was great to meet you and the Mrs as well. Thanks for the wine gift! Much appreciated!
"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

ScooterMan101
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Re: FUTR Beta with Lightning Rods Mid Drive

Post by ScooterMan101 » Dec 22, 2017 3:03 pm

Spline Height on a typical Shimano/Sram Freewheel Hub Body and Cassette/ Cog
is only 1.1-1.2 mm .

Would custom made freewheels and your spacers/cog be possible to be made with 2.5-3 mm spline height ?

I know that would add to the cost of the Kit , as a custom made Freewheel Hub Body would have to be made/machined, but for high power systems would the extra cost be worth it so as to not strip the stock freewheel hub body found on all standard hubs ?




LightningRods wrote:
Oct 01, 2017 9:30 pm
Here is the stainless steel rear sprocket with Shimano spline spacers that I'm working on. I'm traveling at the moment but will have these finished very soon.

Image

Image

Image

The FUTR Beta drive is finished other than this rear wheel sprocket.
Attachments
IMG_1830.JPG
IMG_1829.JPG

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LightningRods
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Re: FUTR Beta with Lightning Rods Mid Drive

Post by LightningRods » Dec 23, 2017 2:15 pm

I'm pretty sure that with the splines as they are the pawls or the ratchet inside of the freehub would break before the external splines gave up. The damage that usually happens to freehub splines are from knife edge sprockets cutting into them.
"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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Re: FUTR Beta with Lightning Rods Mid Drive

Post by JtHaas » Jan 07, 2018 4:58 pm

So with the way it is setup it definitely looks single speed. What's the outside sprocket for in that case?

Do you manually swap the chain to that ring for a different gear ratio? That seems like a real hassle if that's the case :)

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Re: FUTR Beta with Lightning Rods Mid Drive

Post by LightningRods » Jan 07, 2018 5:50 pm

That large sprocket on the chainwheel is the driven sprocket from the motor. The chain wasn’t installed yet. Yes it’s single speed. Manually changing sprockets would be a hassle, and messy.
"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

JtHaas
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Re: FUTR Beta with Lightning Rods Mid Drive

Post by JtHaas » Jan 07, 2018 6:17 pm

LightningRods wrote:
Jan 07, 2018 5:50 pm
That large sprocket on the chainwheel is the driven sprocket from the motor. The chain wasn’t installed yet. Yes it’s single speed. Manually changing sprockets would be a hassle, and messy.
That makes everything a lot simpler to understand. I was wondering why it was sitting out like that.

Anyways, since you put this together can I ask what voltage and amps PRW planned to run this bike at?
Also if you could give me a full quote of this system :) i've got the same exact frame and if the price works right I might drop my hub motor. I'd be sacraficing pedalling ability with my bmc v4 but noise might be the real killer for my type of riding while using a mid drive like this.

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Re: FUTR Beta with Lightning Rods Mid Drive

Post by JtHaas » Jan 08, 2018 3:32 am

With the so called concentric bottom bracket of the Beta were you worried of any possible binding or friction caused by the side mounting plates? There is only a small contact patch before it gets to the c clips of the bearings etc.
No friction from attaching the drive like this afterwards?

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Re: FUTR Beta with Lightning Rods Mid Drive

Post by LightningRods » Jan 08, 2018 11:46 am

I was concerned about the BB mounting plates binding the swingarm based on the photos I had seen prior to receiving the frame. Luckily the center BB tube is just a bit longer than the bearings and C clips. There is zero rubbing or binding.

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The primary reduction chainwheel is spinning at 500 rpm at 50v. It makes chain noise. If silence is your top priority a hub motor is going to be quieter. This drive is more energy efficient, runs far cooler, improves the bikes handling considerably, and also vastly improves the suspension compliance and the ride quality. You will have far fewer rear wheel problems than with a hub motor. But yes there is some chain noise. I'd use belt drive all the way except for the fact that belt drive needs to be wider to handle this much power. There isn't room at the chainwheel for two 25mm wide drive belts.

This drive is $645.
"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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Re: FUTR Beta with Lightning Rods Mid Drive

Post by PRW » Jan 08, 2018 12:35 pm

JtHaas wrote:
Jan 07, 2018 6:17 pm
Anyways, since you put this together can I ask what voltage and amps PRW planned to run this bike at?
72v, 60a. Will start with this build over the weekend.

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Re: FUTR Beta with Lightning Rods Mid Drive

Post by ltu » Jan 08, 2018 12:41 pm

hello lightning rods

mounting the pivot on the bottom bracket how much the pedal efficency(anti-squad)?

best regards

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Re: FUTR Beta with Lightning Rods Mid Drive

Post by JtHaas » Jan 08, 2018 5:52 pm

Alrighty I'm interested now then... I have the same exact frame.
I've got a 42v 30ah pack I want to use with a mid drive. My battery likes high amps but I could rewire it if I really needed too (higher voltage).
How many amps could be run through this system? Peak/continuous a rough estimate is fine.

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