I just ordered some ace bars. I just fitted old bars off something that were lying around the garage when I put it together. And the vibration in them is extreme.
I got out on it today finally. And took note of vibration 70 seems fine in top near 4,000rpm on superlight throttle it vibrates with throttle and overtaking in 3rd and 4th you are like a wind sock. The vibration is not in the seat or the pegs as rpm goes up, it's mainly in the bars but over 7,000 the light needs to be off.
I'm hoping the ace bars are a bit more suitable and resonate differently. And I may experiment with weights. I can understand why late models had bolts and rubber mounts for the bars. But really BSA should have rubber mounted the engine when building the OIF. It doesn't need to be like the Commando
, and flex joints on the exhausts solve a lot. Taking vibration out of the frame can prevent cracking but it needs to be strong.
So many people look at the thing. I was talking to a guy and his wife about why the twin carb Thunderbolt head and pwks. He said I want to see you start it up. Which usually means the big one is definitely not going to go. But this is different, it goes through two with a full kick but this lights up at the first movement. And it's; 'Ah, beautiful.'
There are some lovely old MGs and Triumphs and Healy sports cars around here and they sound and look really nice. They used to look dated now they look very cool, and sound nice. They are not GT40s or Cobras, but really nice fun things. And the Firebird sort of fits in with that.
I got two of these for around $1500 each in 1999 I think, and this was the worst so sat in the shed for 20 years. A '66 Spitfire would be good to do even with a later motor. Firebird pipes are good as they are not on the ground, or requiring the stands scraping. Not that it has a side stand.