The Official Yamaha Chappy (LB50) Thread!!!

The first post for this thread will be nothing of importance, asi just wanna see if it will allow me to post. So here goes Zombie Nation #1

Re: The Official Yamaha Chappy (LB50) Thread!!!

This thread will be for all of us lonely but tight knitted Chappy owners and lover's to discuss a variety of issues/topics in order to help each other out. So yeah, i'm not trying to be the boss of this thread or anything like that, it's just that i thought it was past due that a thread be dedicated to fellow owner's, wether your tuning your bike up performance wise or keepin' it as is.

I would like to start out by saying that i received my Giannelli Performance exhaust last yesterday and my overall impression of the craftsmanship is that it's very very good indeed. Don't let the pics that you've seen of it de3ceive you like that girl that you met in person but didn't look anything like her picture. The System in person and in hand is as good as gold, just not worth as much. I do however have a couple/few gripes about some issues.First off the pipe was ordered from treatland which we all i'm sure have grown to love over some time. The exhaqust does have some minor dings which in no way shape or form will effect it's performance, but i just like my gear looking pristine if ya dig what i'm sayin'. Thie ding's i'm not blaming on either the manufactuer (Giannelli) or treatland cause' i just don't know how they got there...

I do have a problem however with the lack of inormation about having to modify not just the pedal situation on the bike but with getting it to fit properly all together. It should not be this way, as either the manufacturer or seller is reswponsible for giving this information out. I blame Giannelli in this case but don't blame them for their superb craftsmanship at a great price. I have got to figure out a way to get this bad larry to fit and not in the mickey mouse sense of the word. I'm gonna make a couple suggestion's probablt 2morrow as i'm getting tired of typing so i'm off like a prom dress for now fellas and ladies and the ones who fit in between. You know who you are now so don't hide little buddy..hahaha. Bye and cheers rom Boston.

Re: The Official Yamaha Chappy (LB50) Thread!!!

) Cupermcnewbster ( /

Re: The Official Yamaha Chappy (LB50) Thread!!!

LanceCampeau.com /

My brother owns a Chappy and is looking to rebuild...

Re: The Official Yamaha Chappy (LB50) Thread!!!

Tate in Madison /

HAHA!

I just read that blog thread about the Chappy build.

Some 74 year old man was like "Oh where did you get those parts!"

And dude was like, "Oh I got them at treatland.com" Which I am pretty sure is a porn site since those moped warehouse guys found out about it.

He was probably like "Croichy!"

Re: The Official Yamaha Chappy (LB50) Thread!!!

) Cupermcnewbster ( /

funny i messed that up when its linked to the treats page in the post. great reading skillz there

Re: The Official Yamaha Chappy (LB50) Thread!!!

Does anyone know which component's of the LB50 engine are prone to having to be backed up. Especially in the case of a maximum modified Chappy. So basically in regards to the engine, are there certain spare parts that i should keep a lil stash of? I'd love to keep this bike going for another 25 or so years. And NO, I'm not kidding. lol. Thank's guy's.

Re: The Official Yamaha Chappy (LB50) Thread!!!

) Cupermcnewbster ( /

My bottom end is fine. Yamaha over-engineered this motor, so I'd assume you are fine. If anything, clutches.

Re: The Official Yamaha Chappy (LB50) Thread!!!

buddy of mine has one and modified it so you don't have to depress the switch to move the lever from high to low. So he jocky shifts it now. Acts like a three speed.

Re: The Official Yamaha Chappy (LB50) Thread!!!

Thanks for the chappy thread!

Can the lb80 guys take part also?

Anyone know the fork oil amount needed per fork?

Need to re-build and replace the seals on a 76 lb80.

Thanks guys

Re: The Official Yamaha Chappy (LB50) Thread!!!

Found it

The left takes 96cc and the right takes 120cc

Chappy on!

Re: The Official Yamaha Chappy (LB50) Thread!!!

Rob @t ATTN! Burrito /

wait are you kidding about the fork oil?

Re: The Official Yamaha Chappy (LB50) Thread!!!

1978 LB50

Polini kit, custom head, reeds, polini intake, ninja pipe, phbg 19mm carb. Everything powder coated. Brand new build.

Just tuning it now.

Anyone else run into any clearance issues with the ninja pipe?

nick

Re: The Official Yamaha Chappy (LB50) Thread!!!

Rob @t ATTN! Burrito /

man yesterday i saw two matching yellow pedal chappys in the back of a truck, awesome shape. they'd just bought em at a yard sale, probably paid almost nothing for em.. jealous!

Re: The Official Yamaha Chappy (LB50) Thread!!!

I've got an 81 LB-50 w/pedals the dude that had it before me pianted it silver and black. As far as mods go, Nate bandit and I took a circut pipe for a hobbit and did the ol' hack'n'weld trick and outfitted it with a 16 SHA carb. I think we got a top speed of about 37. keep in mind I weigh @210

Everything was running great. I rode it daily with no problems. I took it on the bombourbon run last year, and about 3/4 the way there a piece of carbon or something fused the gap in the spark plug. New plug no problem for the rest of the trip (roundtrip @120mi). A couple days later I took it out for a ride (riding in high gear/feels like a 2speed) about 15 mins into my ride it starts doing this thing that feels like a slip in the transmission when I get to high speed/2nd gear. It only does this in high gear, in low gear there's no problems, it's just low gear. Someone said it could be the clutch slipping so Nate and I opened the case nothing looks out of the ordinary or even slightly worn, no gear teeth are broken, there are no loose pieces, and to boot all of the clutch pads look great. I cleaned all surface parts off reassembled everything and filled with transmission fluid. Started it up and the god damn thing still rides fucked up in high gear. To me it dosent feel like a clutch slip cause it's like a hurky jerky jump in the engine.

I've got an LB-80 bottom end that I could switch the internals out of if I have to, but I'd rather not do that if I don't have to. I kinda wanna keep it cause it's so damn fun. I can jump this thing like 3-4 ft in the air off a curb and there's just not that many of them arround. If I can get it running again I'd be happy for a while, bu I know that eventually Id like to just swap out the whole engine to the 80 and get 70cc pollini kit.

Have any of you other chappy masters heard of or dealt with this problem?

What should I do?

Re: The Official Yamaha Chappy (LB50) Thread!!!

No joke about the fork oil. Just re-built mine and they work great!

One fork does the dampening work and the other the rebound.

That ninja pipe does need mods, but the Giannelli pipe needed far less.

Chappy on!

Re: The Official Yamaha Chappy (LB50) Thread!!!

i had a sweet yamah chappy a neighbor gave it to me for free i had it doin like 30 and had to run with it a bump start it hahah....eventually someone stole it out from under our deck

Re: The Official Yamaha Chappy (LB50) Thread!!!

anyone here have the motobecane version of the yamaha chappy? It is identical but has a motobecane etched motor from morini (m101) variated

Re: The Official Yamaha Chappy (LB50) Thread!!!

That Ninja pipe does need quite a bit of mods to make it fit.

Plus it was totally restricted right at the header to pipe weld. Heard a few guys cut and weld the stock header to pipe ect. Sent it back and got the Giannelli instead. Fit much better and it had better bottom to mid range hit.

Re: The Official Yamaha Chappy (LB50) Thread!!!

Rob @t ATTN! Burrito /

the moby version is rad, i just saw one. NFS though..

Re: The Official Yamaha Chappy (LB50) Thread!!!

Hey guys and gals, I have an '80 LB50 that I rode as a kid, trying to get it back on the road. I took the carb apart and it's a mess. Is there an easy (and inexpensive) new carb I can switch out the factory one with, or should I get out the q-tips and carb cleaner? Let me emphasize, it's a serious mess. I'm sure this is just the first of several questions, so thanks for bearing with a noob!

Re: The Official Yamaha Chappy (LB50) Thread!!!

Rob @t ATTN! Burrito /

someone had a dellorto sha intake, those carbs are really easy, cheap too!

Re: The Official Yamaha Chappy (LB50) Thread!!!

Rob, I was looking at the Dellorto SHA carbs - I see people putting 15s or 16s on, but what is the factory? I'm guessing I need to measure the air intake (is it 11mm factory?) then order the smallest carb? Maybe order a 14 SHA carb then a new intake to match it? I'm not hopping up this ped, just getting it running reliably. It's a working moped on a farm, driving a few miles into the countryside to check on fields.

Thanks!

Re: The Official Yamaha Chappy (LB50) Thread!!!

Rob @t ATTN! Burrito /

go with the 15's and get a few jets in the low to mid 60's i'd think, match the ID of whatever intake you get. really without an exhaust you wont be 'hopping it up' much at all, and the SHA carbs are rather reliable and easy to work on. i have an OG chappy carb rebuild kit, but it's buried in parts mountain.

Re: The Official Yamaha Chappy (LB50) Thread!!!

I used to have an LB80 and i think it was the most fun bike ive ever had. The low and high range selector is awesome!!!

Re: The Official Yamaha Chappy (LB50) Thread!!!

I have a '79 LB50 that I am fixing up for my son. It's in decent shape but needs a muffler. I keep reading that the Gianelli exhaust requires losing the pedals. Ok but if I remove the pedals then where the heck am I gonna put my feet. The pedals lock into a foot peg position for riding. Does this mod require welding on some new foot pegs? Can someone send me a pic so I can see how the Gianelli exhaust attaches to the bike? One more question for now. I need to replace the transmission fluid. How much goes in there and what does the factory recommend for the proper type of lubricant? If it helps my Chappy has the 2 speed automatic transmission. If anyone wants some help with carb cleaning I can help. After cleaning all the crap out of the carb and petcock bowl it starts on the first kick like it did when new.

Chappy Recommended Transmission fluid

I have been searching this site for a while now. I have not found a listing for the recommended oil for the transmission. My chappy is a 1979 LB50 with the automatic transmission. Does anyone have the owners manual to see what the factory recommends. I am sure the oil in there is more than 20 years old.

Thanks in advance.

-Art

Re: Chappy Recommended Transmission fluid

) Cupermcnewbster ( /

The manual calls for Yamalube 4 cycle oil or SAE 10W/30 motor oil, type "SE". Fill with 650-700cc (0.69-0.74 U.S. qt.).

Re: Chappy Recommended Transmission fluid

Rob @t ATTN! Burrito /

anyone happen to know where to pick up LB50 points and condenser? or maybe better if any of the CDI's fit without getting crazy?

Re: Chappy Recommended Transmission fluid

) Cupermcnewbster ( /

points on bikebandit (<http://www.bikebandit.com/houseofmotorcycles/1978-yamaha-motorcycle-lb50pe/o/m7360#sch215435>;) but expensive. Try ebay.

No moped cdi's will fit. The taper on the crank is huge and the stator is as well. I'd bet some later model dirt bike stuff would fit, but haven't done much searching there.

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