Nash Yes they do vibrate a fair bit. You can balance the wheels and make sure they are good but it doesn't help all that much. What I do these days is when I take any engine bolts or handlebar I put them back with a small rubber washer. May just be in my mind. Its just a trait with a T140. Ride Safe Joe.
You could check the primary resistance with a meter should be somewhere between 0.4 and 2ohms but its going to depend on the setup, as long as they are both pretty similar they should be OK...but that's not definitive, i would imagine that that HT lead was in the habit of coming loose so someone glued it up.
If it helps can add my contact, ive just set up my own business tt cycles. Over 30 years building and working on triumph. Got a t140d uk spec just done a full rebuild and converting to export spec. Do one off custom work too, based up in Durham 07735617932 tim..
Nash. You seem to be getting a load of help. Tricky-Dicky did say some useful info. But believe me the Bonnie's do vibrate. The more you use it the better it will get but it will still vibrate. Bonnie's love it hot and run better when they are revving and hot. Forget about the Parkinson. Get out there and rip it open and get that great big smile on your face. If it's not broke then don't fix it. Regards Joe.
Tbh never noticed vibration as a major issue, fitted a comando crank to one along with rest of tuning work, now that did vibrate big time, nourish couldnt get balance factor on crank anywhere near triumph set up, ignored the vibration for the grin factor lifting front end in first 3 gears and upsetting many a jap bike on main roads.
All this talk of T140s reminds me of one i bought new in 1978 think it took me about a week before i had started modding it....i remember the bike well as it was the first one i ever hung off while cornering hard ....i had obviously been watching Kenny Roberts think i ended up swapping it for a pre unit Bonnie chop about 8 months later.
Tricky-Dicky I knew a chap called Richard Buckland. now he could ride Bonneville's never saw another bike Japs that could beat him. He would take the twisties rods he could find and never had much of the foot pegs left on his bonnie. Regards Joe.
Tbh never noticed vibration as a major issue, fitted a comando crank to one along with rest of tuning work, now that did vibrate big time, nourish couldnt ger balance factor on crank anywhere near triumph set up, ignored the vibration for the grin factor lifting front end in first 3 gears and upsetting many a jap bike on main roads.
The biggest let down in those days Joe where the tires...i think we invented motorcycle drifting...but not by choice and it usually prompted a change of underwear...seems a long time ago and i am far more safety conscious these days and want to savor the time i have.
I once replaced fixed pegs with short fold up ones and still never found the limit could push the bonnie too, always found the bonnie very forgiving, unlike most bikes, if screwed up getting it wrong on corner still allowed you correct your mistake and adjust.
Tricky-Dicky The old Bonnie's always did like the Avon's. And they were made to ride. The hotter the better. Yes they could go some. Regards Joe.
Exning all just found out today my bonnerville T140D had its ignition changed from points to boyer electronic ignition but has been running on 12 vault coils should these be 6 volt know if so which should I put on nash
For normally tuned motors 12v coils in series are ok, technically 2 coils are 7 ohms 1 over what would be nice.
They should sit in a mounting plate that's under the seat......but if they have been changed for the Boyer micro versions they may have been moved to under the front of the fuel tank.
Thanks mate managed to pull them out.they wasn't fixed in under the seat . replaced with new 6volt coils all seems balanced out now.running a lot smoother regards nash