Men: I use that term loosely on this forum. So here is the deal. I purchased a 3c with axtel cams(sp) just did a valve adjustment and noticed the cams where marked 4/c. I have seen 4/c cams and own a pair of 7/c cams for 180 triples. These are not 4/c cams. Much more duration. Big thick cams with 4/c lift. 1) Are axtel cams just reground 4/c cams? Looks that way to me. Cam timing. Are there different cam sprocket wheels for different cams? Bike runs real good @ high rpm anything over 4000 but seems to grab revs slow (lumpy) i know typical of big cams but i feel the bike should spinning up faster. Cam timing or maybe ignition timing? Ignition system is AUS a little old school early aftermarket piece seems to work fine setting on #2. Hmmm? Any thoughts? Cheers!
Cams axtels (spocket timing on cam wheels)
- Thread starter 851sp2
- Start date
breganzane
Hero member
- Location
- NSW Australia
The Axtels I have I got from Lance Weil and they are hand etched to indicate they are Axtels. The ones Lance was supplying were ground onto various original Laverda cams, many copies have been made over the years by various people, not all to the same quality. I dialled mine in to the figures given by Lance (which I probably have somewhere), generally speaking they are a very 'soft' cam and should idle well and have excellent bottom and mid-range power.
There is no use chasing carbs or ignition if you don't know where the cams are timed (and your description sounds wrong for properly timed axtels). You need to accurately establish what lobe centre timing you have there and then come back to discuss.
Cheers
SteveB
There is no use chasing carbs or ignition if you don't know where the cams are timed (and your description sounds wrong for properly timed axtels). You need to accurately establish what lobe centre timing you have there and then come back to discuss.
Cheers
SteveB
motoddrob
Hero member
- Location
- S/W Australia
I have Axtells in my Motodd, reground from a set of stuffed 4c, reground was done in Brisbane, not sure who as it was done through a mate. I also understand that they should be fitted with A11 cam sprockets. Mine were fitted with the original sprockets from my A11. I just recently dialed them in, had to advance the inlet 5? and the exhaust 1.5?
Max lift inlet 105? atdc
Max lift ex 108? btdc
From memory so ???
I have all the specs on my old computer, if someone doesn't come up with definite specs I'll look for them.
Max lift inlet 105? atdc
Max lift ex 108? btdc
From memory so ???
I have all the specs on my old computer, if someone doesn't come up with definite specs I'll look for them.
Rusty Spokes
Hero member
- Location
- Decatur, Ga. USA
Somewhere on the camshafts Axtell put a "grind number" when they reground the camshafts. If you don't see that those cams may not be reground C4 to Axtell but in fact C4 Laverda camshafts.
Here is the spec sheet from Axtell for my 3C.
Here is the spec sheet from Axtell for my 3C.
Dellortoman
Hero member
- Location
- Tasmania, Australia
I dunno about Axtells, but A11 and 4C cams use different sprockets. There's 4? difference in mounting hole location, in relation to the sprocket tooth pitch. Remember that for every degree of cam rotation, the crank rotates 2?. So 4? at the camshaft is 8? measured at the crank with a degree wheel. Dialling the cams will soon tell you if the sprockets are wrong.