Motorized Bicycle Chain Tensioner Upgrade 

First thing u need to do is get rid of that spocket that attaches to the spokes get the one that attaches to the hub

I have the same bike as yours and I was using the stock chain tensioner. On the first attempt at starting the bike the tensioner slid in and broke 8 spokes. We then drilled the tensioner into the frame of the bike so it wouldn’t budge but it decided it wanted to bend and completely destroy my wheel

Thumbs up just for the Schoolhouse Rock T-shirt!

I put one of these on after countless tinkering with the cheap system that comes with the kits.DEATH TRAPS!!! I upgraded the spring on my tensioner. Bingo. Ready to rip n roll😊

OH MY GOD! TAKE OF THE PINK DRESS AND TOSS THAT CHAIN GUARD OUT! What men do! LOL

I use BOTH chain tensioners, the chain rides very smooth! May need a little modifying.

Folks, if you put the chain UNDER the roller, it pushes the bracket out away from your spokes.

You can always add a self tapping screw through the stock tensioner.

Great upgrade, mr steve, thanks, keep sharing on motorize bike tips & tutorials,, bike builts, thanks, joe

That exact issue is what happened to my bike lol so I think I’ll buy this thanks man

0:43 This happened to me. It ended up coming loose and breaking two of my spokes. Lucky I was only going like 5mph and turned it off as soon as I heard the weird noise

I actually bent the POS stock tensioner luckily I didn't get hurt

That is the best option I have ever seen

You take your chain guard the top of our connection to the motor and you pulled in between the cover and the engine that's all you got to do

Keeps going in my forks no matter how tight I make it

Ohhh nice to know

That tensioner does not align chain where it is most likely to derail: where it meshes with rear sprocket. It also slams down during starting procedure

Thanks man 👨 🙏

I have that Nel Lusso bike, too. I am thinking of putting a friction-mounted motor on it though instead of the 2 stroke as you did. I have already removed that plastic plate and medallion at the frame and will likely be cutting the rack off to allow the friction-mount to be placed on back. If I do that, I'll cap the ends with rubber pieces. These racks are notorious in breaking at the welds. I will be adding a 4-stroke engine. No need for a tension adjuster in what I am planning, but I may pick up another beach cruiser and put in the same type of motor as you have and then add in the tensioner as you did. Nice mod and seems like it should work well. Thanks for posting. Those look like the original tires on your bike. How are they holding up for you?

Day 2 of my first motorized bike, chain tensioner blows up my back wheel. I'm uninjured and not too far from home, made this same purchase right away.

excellent tutorial thanks. about to install one

Only $15 . All this time I keep readjusting the tensioner..geez am gonna get one

My plastic wheel tensioner literally exploded off my bike today, hit my spokes and flew off somewhere in to a field. Had to bike home. Ive been researching options for better quality wheel so this dont happen again, a metal one would be perfect.

That's why you take that cheap ass tension in the back of the bike and you weld it right on the frame that's why I do mine I pulled it and I weld it it didn't move yet

Nice

piece of hose helps save your paint find it helped it grab more evenly . drill thru your frame and tensioner once mint and aligned . locking pin little bolt or something to save the spokes . if u have to run the shitty one like me for now till this part arrives :) cheer s

how is it riding so far??

thank you!

I crashed because I was looking down at the tensioner and hit the curb

I just got my upgraded hain tensioner from BBR for that exact reason. It literally ripped off half of my spokes and destroyed the wheel.

I recently purchased a used motorized bicycle. I've got over a thousand total in the bike. I'm about to install spring tensioner. Thanks for video. My question is; how tight should chain be set? I've heard both tight and semi-loose and neither has worked. I'm hoping spring tensioner solves problem but which is it? Please!

It doesn't look like it adds much tension though....

Cool video I will grab one of those

Bought this and installed but my top chain hangs and touches my bottom chain?? I tried taking a link off but taking even one link off made it too short and it wouldn’t reach. Any suggestions???

that spring looks very weak? looks like it will stretch eventually.

so then the chain tensioner is not worth it or why is it beneficial to have a chain tensioner on a bike with a motor what does it help it in?

How do you get the spacing between the 2 chains my chains are so close that they are hitting each other they aren’t lose it’s tight but idk how to get that gap

So I need help I just got my spring tension or installed it and everything But the little bolts on the arm Don’t seem to tighten all the way because the inside of the boat cab has some type of interlocking it

i can't wrap my mind around how these moped type bikes work. it just seems like the motor chain would turn the back wheel so the 6 speed chain should move with the back wheel just as quickly and make the pedals spin 20 mph. changing the gears in 6 speed mode while agh. i can't even explain my confusion

First!! Nice vid.

any extras anyone has to use like a tensioner and many "upgrades' on the aftermarket besides the kit is a waste of money unless you put together an aluminum bike

I have a stretched out frame and need 2 chain tensioners I purchased the pulley arm tensioner since the other doesn't fit on a 4 stroke does anyone have a video on installing them

I installed mine and the cranks hit the bolts on the tensioner.

All you have to do is drill a hole through your bicycle and bolt it on

How did the tensioner work?

I’ve seen bikes with no chain tensioner at all..they have a spring loaded one from factory on the bike, do I need one if my mountain bike already has one ? The tensioners are needed for a one speed bike

Do not use this bike frame's crack everyone I've seen built crack just use a different bike

They r trash and can end up blocking your pedals from clearing thru

That nel lusso is going to break

I don’t use one. Been like that for a year or two

This does not work at all