r/motorizedbicycles

I wanted to share the solution I came up with to prevent my gaz tank to crack from Vibrations.

It takes 2 mounting hardware kits but I think at this point we all have more than one. I placed another holding bracket under the one on the photos

The Idea is to spread the load on the tank a little more an put the stress on the stud directly instead to put it on the cheap spotweld that hold the stud.

So far its been 5 months with this setup and I don't think it will leak or crack for a while.

Do you have other tricks? I'm curious to see your fixes or work around

Loving the Gemini wheels and Menace 85 from Smolik. Mikuni VM18 seems like the perfect carb too :)

Pretty much love in this thing and very stoked to dial it in the way that I want it to be. I was on marketplace a few months ago while on a break at work and saw a guy that was selling a beach cruiser motorbike that wouldn’t run for 25 bucks. I messaged him and told him I could come get it at lunchtime and that I was 100% definitely gonna buy it and he held it for me and I took a long lunch break went scooped the thing. Note.- the only thing on this build that was from the bike that I bought for 25 bucks is the engine kit chain and all that everything basically besides the bicycle then I swapped it over to this frame that I bought from another dude on marketplace, which is actually super sick because it has the longer frame and I had the ape hangers that came with it. Anyways, I picked up this stainless steel water bottle and turned it into a gas tank. I just have yet to mount it due to the Petcock kinda sitting in a weird spot when I put the bottle where I want it to be. Just wanted to share cause I think this thing’s bad ass and some of you guys got some really sick stuff too. I love bikes so this is definitely a solid hobby and budget friendly.

Has anyone here put an engine on an e bike?
I feel like a predator 79cc would probably fit the frame with some adjustments

What it looks like I’m going to have to do is remove all the wires electric motor controller and replace the rear wheel with a regular wheel

I wonder if I could just hollow out the motor and use it as a big wheel bearing but idk if it’s even with doing
But I do think it would be very worth it in the end but I also wonder if the frame would even hold up to 3.5 horsepower.. probably would 🤔

How short do i have to cut these exhaust rubber tubes because i assume i cant have it acting as a major expressway for the hot gasses but i do need it to be somewhat long so i can re-route the downward angle of the zdx65 pipe. The pipe in its stock position as it sits without a silencer would spit hot gasses and exhaust straight at my rear tire. So i need it to be long enough to route the zdx65 back tube, around/through my pedal chainguard and up to where my silencer slip on will be connected to the rear chainstay/arm. The kit didn’t come with anything to clamp sonimma have to use plastic zip ties 🤦‍♂️ 🤦‍♂️ 🫣🫣

IF someone is going to run a chain tensioner there is literally only one version that should be considered and its sold everywhere, even at Walmart for a mere $20 bucks. Save your skin for cheap. There are no other tensioners that have the safety features we need.

It’s the 100cc 4 stroke from Amazon she does pretty good

Ive been running an ~18:1 oil mix. Top outs wouldnt be longer than a minute, 2 mins at a time. That just means full throttle down the road. What should a (let me emphasize) reasonable break in period treatment look like and what am i messing up by not going easy during my break in. (Btw i just learned fenders are no-no, apparently, so yes ill get on that)

Thanks yall! This project is so fun!

Bought my kit and found a freebie Magna Fix-D. Had to repack all the bearings, and replace the free gear on the pedal side. Struggling with the chain alignment due to an oval shaped chain stay that forces the chain tensioner assembly to rotate outwards as it conforms to the oval shape. Ordered some alternative chain tensioners to try out, also considering bending this one to

Got it running on some 20ish:1, moved the air screw about 3 turns and it worked on the first clutch drop without choke. The chain is terrifying as I heard a few clunks from the alignment worsening under load. Held the clutch in and walked it home to be safe. definitely going to wait to install any type of fender system. I'd rather take a chain to my leg than a fender to an artery. Motor ran great otherwise! (Full bike shot taken before completion btw)

Any and all tips appreciated.