Just recently got my 1970 T100 back on the road after the conrod broke in October 2010. I have a little problem, the bike is hesitating between Ό and ½ throttle and I wanted to pick your brains before I stash it away for the winter, its starting to get a little chilly in Toronto now.
A couple of pictures of Armageddon 2010:
Really it should be registered now as a 2012 model after all the new stuff in the bike.
I had to get new cases, new barrel (re-bored +0.040), pistons, new exhaust camshaft, the old one was little bent.
Started it up a few weeks ago and it was ruining really rough, checked out the battery and it was not up to the job. Bought a new battery and all was looking good. I have a Boyer
ignition installed, amazing what a couple of volts can do? So with the new battery I was pleasantly surprised how well it was running after the rebuild.
Check out the video here:
I have done about 150 miles on the bike so far. I have not been babying it but not thrashing the living daylights out of it. Re torqued the head and base nuts twice, changed the oil this afternoon.
Trouble is there is hesitation when accelerating. I put some masking tape on the throttle and marked it up in Ό segments so I could see ½, Ό throttle etc. The bike ticks over great, but there is hesitation between Ό and Ό throttle. Once you go pass1/2 throttle everything is good, whips up the road like a gazelle, no hesitation what so ever.
I have an AMAL Concentric
single carb setup, with no choke. I bought the carb new about three years ago and before the blow up everything was running fine.
The specs for my carb are:
Carb Size: 26 MM
Main Jet 180
Neddle Jet .106
I have the clip installed on the top ring of the needle.
This setup worked great before Armageddon.
What I have done so far:
Last week I dismantled the carb again and ensured the pilot jet was clear using #78 drill. Checked the drill after insertion and no grunge on the flutes of the drill. I checked the float, all looked good 0.080 below the surface.
I have a tank full of new gas.
Checked the timing with a strobe, bang on.
Re-Checked and adjusted the valve clearances.
Any ideas on what I should do next?