got by bike finaly running! then BOOM!!!

linnix13 · #1 10-12-2009, 06:42 PM

i got my 33cc pusher running again, turns out the needle in the carb was jammed, i fixed it and went out for a ride, i was running the proper 25:1 mixture, had the jet tuned and checked the plug, it was not running to lean, it was running mint, i was pulling about 30kph on flat ground, mid-high rpms, not over revving, then it just went crunch, bang and alot a smoke, i stopped and when i went to pull it over i realized it was done, what happened was the wrist pin bearing let go and put rollers all over the crank case and cylinder, its punched, im picking up my 1976 moby moped tomorrow, so i will have some reliable transportation, sigh im not having much luck lately, have a look at the pics, let me know what would cause this? i think the problem was that it was an old Chinese engine that just let go,

linnix13 · #2 10-12-2009, 06:44 PM

heres a few more pics of the damage,

**Dan** · #3 10-12-2009, 07:27 PM

Wow, Dunno Linnix. Almost hurts looking at your pics.

Frustrating, eh? Sorry to see that.

Venice Motor Bikes · #4 10-12-2009, 08:24 PM

How old was the engine??

linnix13 · #5 10-12-2009, 08:27 PM

Quote:

Originally Posted by VENICE BOY

How old was the engine??

not sure, i bought it used from someone online, when i got it it was in great shape, it had been sitting in there back yard for atleast 2 years, he said he got it brand new and the recoil broke because he pulled it to far during the break in, when i got it the rings hadnt even set yet, so it was atleast 3 years old but only had a few hours of run time, i broke it in properly, gently on 20:1, im wondering why it gave like that? just a bad piece of chinese engineering i guess,

**BarelyAWake** · #6 10-13-2009, 01:37 AM

Sometimes Murphy demands a sacrifice

Hope you get back on yer wheels again soon - post a pic of yer ped if ya get the chance

linnix13 · #7 10-13-2009, 07:24 AM

heres my ped,

its the closest thing to a bicycle i could get, it has a cvt transmition, and its 49cc, it will do 55kph(35mph) and has alot of power to cary me up the hills because of the transmition, it mixes 32:1. it has 15 hours on the engine, which is amazing for something from 1976. it has a choke nob on the left handle and a decompression switch on the left, you start it by having it up on the kick stand and pulling the decompression, then just pedal and pop the decompression lever and give it some choke, i intend to keep this until im old and retired, i want to be able to look back and say "i remember when i was a kid i bought that thing" so i will have good memory's, this is going to be my most treasured item from now on, all in all i like it, im picking it up today, i will be riding it tonight when i get home from work around 10,

impression · #8 10-13-2009, 07:40 AM

that thing is awesome, hows the license thing with that ?

linnix13 · #9 10-13-2009, 07:45 AM

Quote:

Originally Posted by impression

that thing is awesome, hows the license thing with that ?

im supposed to license and insure it and get a ML class license, but so was my MB, this is actualy a smaller displacment than my MB, and i rode my MB all around town and saw the police all the time and they left me alone, im just going to throw my dads old motercycle plates on it, and drive safe, il give the police no reason to pull me over, besides, what choice do i have? the entire ontario drivetest is on strike, i have a car and i had money to insure it, i even did driving school, but they went on strike over 2 months ago, and i have been missing school and work, so i eather drop out of school and quite my job, or ride this thing and become successful, i choose the latter!!

robin · #10 10-18-2009, 09:17 PM

there is a site on the Ontarios native shrub site where Walter Muma had one of these bikes (mobylette) and did 11000 miles on it- a worlds record on a moped in 1978 for Guiness book of records for many years -from Toronto to Alaska and then to the Yukon--he discusses maintenance and has a fantastic many paged travelog really worth looking at!!
Moped Trip - Home Page
All is not gloom you have a fantastic find!!