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First start up.


Glenliman

Well Known and Active Website User
VOC Member
As far as I know, Grade 8 is top of chain for SAE, but I've gone up a size and that seems to be holding.
Can't say the same for the knee, it's not holding!

Glen
 

vibrac

Well Known and Active Website User
VOC Member
There is a lot to be said for a cotter pin kick-start joint perhaps a few Vincent design aspects are wanting however I dont suppose any designer expected discussions like this 70 odd years on.
 

Gary Gittleson

Well Known and Active Website User
VOC Member
Then there's this gizmo: https://kickmagicstarter.com/
I saw this in operation recently. It seemed to work. There was no mention of mounting it on a Vincent. Not that I would want one on mine.

I will add that despite being rather short and riding a rather tall D Rapide, I don't seem to have much of a problem. When the bike is cold, I do start it on the D stand but never when even somewhat warm. My bike has a C-style front stand but I don't start it on that. I just take the bike off whichever stand it is on, swing my leg over and start with my left foot on the ground. I don't find the need to come off the seat. It does seem to help to make sure the engine is rotated to the compression stroke on the front cylinder. Then, it's a matter of putting some pressure on the lifter and easing the kickstart until the lifter lever moves in readily. Once in, I just give it a good thrust, letting the lever go at about the same time. One such kick is usually enough, unless someone I really want to impress is watching.
 

timetraveller

Well Known and Active Website User
VOC Member
Nice to see the JE steering head and concentric in the bottom right of the picture, Enjoy riding and if there are any queries concerning either handling or comfort come back and ask.
 

erik

Well Known and Active Website User
VOC Member
On Saturday I made the first 60 miles with the Rapide. Excellent road-holding with the steering stem and the engine with a lot of power. On the revcounter I went up to 4000 revs. The carbs are a little bit weak on tickover but the straight-through silencer is too loud. I will swap to a spiral baffle one, selling the other. Regards, Erik
 
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Bill Thomas

Well Known and Active Website User
VOC Member
4000 rev's, Is a bit soon Eric ?.
You don't want to nip the motor and have to do it all again.
Cheers Bill.
 

vibrac

Well Known and Active Website User
VOC Member
All depends on his piston clearance I am sure I am not alone in giving it 6 thou and racing the next day
 

erik

Well Known and Active Website User
VOC Member
I have 5 thou Piston clearence and what I think is that not the revs are the Problem .It is the work which the engine has to do. High load means high temperature.If the engine is Spinning with low load there is low temperature and no Problem for the Pistons.I have carillo Pistons with modern ring Technology and therefore the bedding in procedure is finished after a short milage.regards Erik
 

Black Flash

Well Known and Active Website User
VOC Member
Oh oh Erik,
You are opening a can of worms there.
Maybe time to open a new thread?

Enjoy your twin!
Bernd
 

Bill Thomas

Well Known and Active Website User
VOC Member
I can understand, He is Drunk with the Power !!. :)
As an Ex Racer, I have had to give it one, Early after a build, But for a Road Bike I think I would be a little more gentle.
I think it was our T.T. Who has told us, If the Barrel or where it goes on , Is a thou' out,
That 5 thou is a lot less ?.
Good Luck, Bill.
 

clevtrev

Well Known and Active Website User
VOC Member
4000 rev's, Is a bit soon Eric ?.
You don't want to nip the motor and have to do it all again.
Cheers Bill.
If you do not give enough revs on initial start up, the rings will never seat, pressure generated by the high revs, will push the rings out on to the bore, thus seating them. If you do not give enough pressure the oil is able to get by the ring and the chance is now gone. So on assy, NO oil in combustion chamber and good high revs for a good few minutes to get the job done properly.
 

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