Apollo 250 Dirt Bike Conversion

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skeetab5780
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Re: Apollo 250 Dirt Bike Conversion

Post by skeetab5780 » Dec 23, 2017 3:33 pm

Yes that is the bike and i think its a great idea, but wrong frame and wheel size choice. It looks extremely silly and not well thought out, nothing against the company in general.

Do you realize how cheap all the parts on that bike are? It is all chinese made...the motor is only $300 and it is the nicest part on the bike by far. Do not fool yourself and think they are giving this bike away for free at the $1900 no battery price tag.

I also own the controller they are using its worth $200 kls7218

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Re: Apollo 250 Dirt Bike Conversion

Post by skeetab5780 » Dec 29, 2017 12:05 pm

Strapped a Gopro to the frame and took the bike for one last test ride with the #40 chain and the 12t front and 60t rear. Once I get my welder I can weld the battery mount and tensioner mount and get this thing on the trail!


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Re: Apollo 250 Dirt Bike Conversion

Post by skeetab5780 » Dec 29, 2017 12:40 pm

Also just got my new welder in so I can get to work soon!
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Re: Apollo 250 Dirt Bike Conversion

Post by skeetab5780 » Jan 04, 2018 12:57 pm

Oh my god my welding skills are so awful! But it seems to be holding, hold your breathe!

But I tacked the battery tray in place and tacked the chain tensioner into position.

Now I am charging both my 18s packs so I can parallel them and get them mounted to the bike. I was hoping to get it done today to take a ride out in the 1 foot of snow blizzard we are having outside...but the packs need to balance so I can put them together and they are trickle charging at the moment.

Bad pics but oh well!
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If I can weld anyone can! Hacked the ebay tensioner cut most of it away. clamped it to the swingarm and tacked it in 4 spots...good enough for me!
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Last edited by skeetab5780 on Jan 05, 2018 12:55 pm, edited 1 time in total.

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Re: Apollo 250 Dirt Bike Conversion

Post by skeetab5780 » Jan 05, 2018 11:55 am

More progress today!

Used some NSI it-4 connectors (on the shelf at my work) to quickly parallel the packs and get this thing riding
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I don't talk about this much but I use heavy duty Velcro to stick my packs to stuff and to each other, it comes in handy. I bought 50ft of both sections about 8 years ago and still have some
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Shot of the batteries with the seat off
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Tucks in just about perfect under the seat when installed
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Strapped them in to snug them into the Velcro to prevent moving
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routed the main battery wires from the controller to the batteries
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Hooked up the generic Gopro
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Re: Apollo 250 Dirt Bike Conversion

Post by AMM118 » Jan 06, 2018 1:14 pm

Estimated weight ready to ride?

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izeman
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Re: Apollo 250 Dirt Bike Conversion

Post by izeman » Jan 11, 2018 10:04 am

why don't you put it directly under the seat? there seems to be some space, and cog should be better as well. or divide the pack up. half there, half there.

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Re: Apollo 250 Dirt Bike Conversion

Post by skeetab5780 » Jan 12, 2018 11:44 am

izeman wrote:
Jan 11, 2018 10:04 am
why don't you put it directly under the seat? there seems to be some space, and cog should be better as well. or divide the pack up. half there, half there.
That's not a bad idea, they aren't super heavy it shouldn't matter much

I still haven't been able to get out and ride cannot wait!

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Re: Apollo 250 Dirt Bike Conversion

Post by nutnspecial » Jan 13, 2018 1:46 am

directly under the seat
good for doubling the pack if wanted/desired. Secondarily since obviously more of pita to mount and considering minimal change to ride weight distrubu/characteristics

Lookin Bangin skeetab

my sht gues in wate is 150lb max, maybe 140lbs as is? Gauging from my 2 hub motor fatbike that's ~100lbs with ~600wh.

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Re: Apollo 250 Dirt Bike Conversion

Post by John in CR » Jan 13, 2018 8:17 pm

Coming along nicely. Looks like a fun little bike...fun enough that you'll want more riding time, so start thinking about placement for more battery. Your battery pack will thank you too, since the lower the current draw per cell and shallower the typical DOD, the longer batteries live. My shop buddy is still using a pack I made in 2008 with Makita "konion" blocks I bought from DrBass. Sure by themselves they sag like a 90yr old grandma with watermelon size breasts when young, but they still have nearly 70% of their original capacity. We prop up the voltage during peak current draw with 5ah of 5yr old Lipo bricks. Those Konions had a 500 cycle rating, and by being kind to them they've lived through several thousand cycles in almost daily use.

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Re: Apollo 250 Dirt Bike Conversion

Post by skeetab5780 » Jan 18, 2018 9:51 am

I have a feeling these KLS controllers are nothing but problems... I've been trying to give them the benefit of the doubt

It seems the controller does not output full current from a stall, which is ridiculous. Basically I can push the throttle 100% from a stand still and it will just slowly pull away, wont break the tire lose not even close...

I went out in a snow storm with it and I had to try pretty hard with snow on the ground to get the ass end to break loose, seems most people with larger moto builds going on are finding out this also and switching to other vendors...

I didn't want to spend a ton of money on this build so I am thinking of maybe throwing it in the trash

Since I have no way to monitor the power output right now its all just speculation, but it should be a lot more powerful from a stall IMO

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Re: Apollo 250 Dirt Bike Conversion

Post by izeman » Jan 18, 2018 11:47 am

nothing really relevant to see on the video :) you should have mounted it filming the rear wheel.
but nethertheless you are absolutely correct. kellys are totally different from those xie-chang controllers (especially with a long block time set). kellys will release their power very smoothly and controllable.
unfortunately this may be (WAY) to little for our likings. i was never really able to do a wheely even though i had double the max power compared to my xie-chang controller.
riding the bike with the kelly and e.g. trying to power lift the front wheel as you want to hop over a fallen tree or something is very hard to do, next to impossible.
what you need to do is crank up the phase amps as high as possible. maybe if you switch from TORQUE throttle to SPEED throttle or mixed mode it will help. have you tried that?

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Re: Apollo 250 Dirt Bike Conversion

Post by skeetab5780 » Jan 18, 2018 1:36 pm

izeman wrote:
Jan 18, 2018 11:47 am

what you need to do is crank up the phase amps as high as possible. maybe if you switch from TORQUE throttle to SPEED throttle or mixed mode it will help. have you tried that?
they are set from factory at max

and there is no torque or speed option on KLS

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Re: Apollo 250 Dirt Bike Conversion

Post by jonnydrive » Jan 19, 2018 9:23 am

To improve throttle responsiveness in KLS you could play with the following settings
[Torque Speed Kp], [Torque Speed Ki] and [Speed Err Limit]
Because they are the parameters for the PID Setting that control the throttle response.

I used an online emulator to see what happens changing the parameters.

For my trialbike I found this settings as a good compromise (but is strictly related to the gear reduction you use)
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For more aggressive throttle try to reduce the Kp value.

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Re: Apollo 250 Dirt Bike Conversion

Post by skeetab5780 » Jan 19, 2018 11:37 am

Thanks johnny ill try that, i feel like i got 100 forum members to but the kls7230s and most everyone seems to hate them!

You should try to upload a vid of your bike in action, interesting gearbox use

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