r/motorizedbicycles

I need help with points
▲ 6 r/motorizedbicycles+1 crossposts

I need help with points

i have this old Riga d8 engine, i tried to adjust the points but its nearly impossible, they open 2 times with ~.36mm gap, tried replacing the point trigger thing on top of the rotor, same problem again. also what are the correct values for it?

u/UpperJump5259 — 11 hours ago

No longer hitting high speeds

I put on a mx65 clone and now I'm only getting up to around 20 to 30mph I used to hit around 37 top speed.

It has new gaskets and the car has been tuned to the best of my skill

u/EmployerNo1068 — 19 hours ago

Is this okay?

My motor has been leaking so bad and i couldn't find the leak yet and this is one of the seals this is the third time i replaced these seals and the lips of the seal always get squished like that, any tips how to put them properly (do i need to push it all the way or just when it can't be pushed no more?)

(Edit: I did use 2 stroke oil the first time and the same thing happened. The second time I tried grease but the lips of the seal still did the same thing)

u/AnimMusicTM — 18 hours ago

My daily driver

Hi! Been wanting to show off my daily driver for a while but just haven't made the time.

She's a 4 stroke, 53cc motorbike, with a custom seat, battery bay and engine mount. When I bought the bike I was kinda new to everything and so the frame is aluminum, I managed a steel insert system so now I can weld on parts. Anyway. Thanks for checking her out.

Oh and right now she runs around 25 Id say. She needs all kinds dudads that'd help, like brakes! But shes all there.

She's special to me because I was without a home or any kind of ride so getting work or anything was hard, I built her and she's carried my pack and me around. I'm n a better position now But I thank the Lord I have her.

u/mverycwel — 24 hours ago

What bycle to use when building MOTORIZED BYCLE

Hello,

I am building a motorized bicycle my engen kit is from aliexspres it shoud be 100cc but i read that they are lying so its probably 80cc. I want to be riding on gravel roads, forest paths and easier trails.

Here comes my question, shoud i avoid aluminium frames and chose a steal one? Did anybody had exspirience with aluminium frame that it broke?

I am chosing betwen two bikes trek 6000 is aluminium but i like it better, scoot is steal. Wich bike is better in your opinion?

Thanks for anwsers and have a great day!

u/MaybeOk9009 — 1 day ago

Cool board track racer bikes by Harken Cycles for sale

Three bikes for sale , make an offer I'm trying to get rid of them, 2393627395 text

u/WolverineSlow4783 — 1 day ago
▲ 8 r/motorizedbicycles+2 crossposts

Need Advice And help

I just can’t stop thinking about riding a bike since I was a 5yr old I’ve wanted a dirtbike or minibike, I have a bunch of screenshots of fb marketplace and offer up posts, but i don’t know anything about the bikes or how to negotiate, cause I don’t wanna spend a lot of money that I don’t have. Can someone that knows about this pls text me or help me look and choose a bike? Or should I just get a brand new frame,motor, everything. Which would probably take wayyyy longer as just the mm80 frame with suspension is is 350+ 150 engine+ all the extra stuff just imagine, I’m only 14, mom would love to support me she does all she can just not something that’s easy for me. Even 250 I can do 100 and convince mom it’s a good deal and she won’t have to buy me nothing for a bit But aye don’t be negative, I can learn. Just try to help,Pls.

u/FLJreeladventures — 2 days ago

New add on my ride

My pretty crazy add on my café racer, I think it looks trash but I can't hide the love for a two seater motorised bike. It's very funky but it strangely works.

u/Xitrin_Cavis1928 — 2 days ago
▲ 72 r/motorizedbicycles+1 crossposts

Very close to completion

Tomorrow i’ll get the tank and there was some problem with the spark so i checked the voltages and it turns out i have to use new cdi and statir so i’ll get those aswell tomorrow so maybe soon test drive clip.

u/LetterheadSharp4604 — 3 days ago
▲ 3 r/motorizedbicycles+2 crossposts

I need help with mounting bad yo

To be fair i don’t own any calipers and that is part of what is getting me into trouble. But i have now bought 2-3 hub mounts/adapters and 2 motor mounts both of which had to be returned for too big and too small. I guess my downtube is smaller than 1.65 inches, and its bigger than 1 inch. Same goes for the rear hub adapter. I can get more exact pics (using the string trick) when I get home to help anyone better understand. Is there any way i can use the disc brake hub adapter to connect a sprocket? I believe it has 6 screw holes. PICTURES HERE

u/Fearless_Spare_9836 — 3 days ago

Need opinions

I have menace 85cc on a cruiser. Wanting to know what wheels and SUSPENSION to handle the power. On a budget. Or should I ditch the bike and save for Zeda dawn

u/Brilliant-Sector1442 — 3 days ago

Mtb builds

Hey anybody build out a mountain bike frame to look like one of those older style cafe racers/ motorcycles or any motorcycle of the type? Like some of those olddddd bikes or something like that? Popo dumbed me down to the "pedals and 50cc" punishment and i am not tryna look like a bum rollin around waitin to hop back on the hog! You built it? I wanna see it! I just purely want inspo and ideas as maybe a build to go with as i dumped all my creativity into a mini bike😭 jk lol jist want a starting point or to see what a bummy frame can turn into! (Photo of my first moti for algorithm)

u/Hot_Director_1489 — 3 days ago

Expansion chamber template

Would anyone have an expansion chamber template for flat metal they made for their motorised bike bt80 motor (or any 66cc) that they would like to share?

thanks

u/Expensive-Remove852 — 3 days ago
▲ 4 r/motorizedbicycles+1 crossposts

Im new to this …. Could someone tell me would this be worth $280 ? And what’s the CC on this and possible speed ?

u/Isaiah_00t — 4 days ago