ima guy from a small town in new hampshire lookin to get my 1974 trials 80 also known as TY80A.. It has power coming from magento but, then looses power as soon as coil is plugged in, now let me tell you guys its a brand spanking new coil , new spark plug as well and i still can not figure it out . HELP. suggestions are welcomed . 

 

 

thanks

tyler

Welcome, now go see the Yamaha thread!

Is the coil earthed properly ?

not quite under standing what u mean I've tried grounding the coil too the frame and nothing i unhooked the kill switch thinking that was the problem

 

 

1. tried 3 coils and nothing 

2. new plug

3. new coil

 

 

4 i tool magnets out to the magneto and they looked good they were not broken also looked at the condenser look fine 

 

could my condenser not be putting enough power to spark the plug off the coil and would it just show that i have power from the magneto but not enough to ignite the plug

 

 

thanks 

Condenser?

Welcome!

--biff

thank you ! had a feeling that was problem but needed other input . this site is the best site for trials , will post pic of bike . cleaning up and trying to get it back to the way it needs to be . thanks again.

 

were do i find the condenser and the copper coils i can find just the condenser but the copper coils have to be wired in looked on eBay but all i found was the  condenser. 1974 Yamaha Ty80  

Yea you have to solder them in place. You can use eBay or one of those old school love free or die New Hampshire bike places. Not the big chain joints. Bike bandit I believe has em too.

--Biff