Comet Top Speed
- Thread starter Russell Icke
- Start date
We really need to go the other way, Smaller rear sprocket, 46, I have tried it ,
To get the rev's down !,
But with my size and heavy tank bag, It's a bit too much.
My next Comet, I only have a 45 !! sprocket,
So need more power !, If I ever get the 560 cc done ?.
To get the rev's down !,
But with my size and heavy tank bag, It's a bit too much.
My next Comet, I only have a 45 !! sprocket,
So need more power !, If I ever get the 560 cc done ?.
Not if I cant even find a 90 bore supplier .....
Have you asked Greg.
Many years ago when I got a Comet without knowing anything about them, I was very disappointed with it. It would not accelerate and would not pull top gear at all well ,in fact it was faster in third.
I eventually learned it had a (twin) 46 tooth rear sprocket. and swapping it for a 48tooth improved the position. I now run a 49 tooth on my Egli Comet which is what it came with, but I would think it would go even better on 50.
I am with Erik here. As standard it is too high geared for performance. Gear down, definitely not up.
Bill you will never be happy with a standard Comet on 45 rear sprocket
The Arbuthnot Iron ran a 60 tooth rear and would pull out tree stumps!
I eventually learned it had a (twin) 46 tooth rear sprocket. and swapping it for a 48tooth improved the position. I now run a 49 tooth on my Egli Comet which is what it came with, but I would think it would go even better on 50.
I am with Erik here. As standard it is too high geared for performance. Gear down, definitely not up.
Bill you will never be happy with a standard Comet on 45 rear sprocket
The Arbuthnot Iron ran a 60 tooth rear and would pull out tree stumps!
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My idea is to keep the rev's down at 70 ish, I know how they go with a big sprocket,
As I raced it as a Black Flash, With a 2" pipe, Sounded Super,
But still only about 16 seconds for the 1/4 mile sprint,
Far too much noise for me now, Worried about the conrod !.
Tony's engine was destroyed !!.
As I raced it as a Black Flash, With a 2" pipe, Sounded Super,
But still only about 16 seconds for the 1/4 mile sprint,
Far too much noise for me now, Worried about the conrod !.
Tony's engine was destroyed !!.
A single cylinder engine lives from high revs.This the reason why the Godet Grey Flash Racers are built to rev high and for a complete race on the IoM.The power delivery is as most People know only every second turn of the crank of a four stroke.If you want to go fast with a single cylinder bike you have to rev it through the gears.changing gears more often as with a multicylinder bike.
Here are the two mutes I have made up for the twin racer 'megaphones' they are in stainless and the aluminium end plug is changeable. At the moment orifices add up to around 3/4 of open pipe capacity, side holes are left unburred on the inside and backward facing faces are grooved at 45deg.it all helps
Maybe I used the wrong word,, I meant rev's /Fuss, Poss' Damage !,
Anybody got the photo of Tony's Comet Engine, That went BOOM, I think it was in MPH Many years ago ?.
Anybody got the photo of Tony's Comet Engine, That went BOOM, I think it was in MPH Many years ago ?.