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Singles / Re: Choke
« on: 30 January, 2018, 10:31:56 »
You can check your compression fit by slowly pushing  the kickstart lever.
fI it is hard to turn past compression, its OK.
If it turns over without much effort, then you may need a rebore.

Singles / Re: B44 riders
« on: 23 January, 2018, 10:09:47 »
Why would it not produce its full power when everything appears to be in good order?

I find that car speedso read about 2/3 mph over. It would be illegal for a speedo to read under,
 so the manufacturers have be on the safe side, also allowing for variations and the effect of wea,r and changes of tyres.Mick

The Star and Garter / Feartherbed frame.
« on: 05 January, 2018, 10:24:35 »

Just  casual thought-
When (in the day) I changed my B33 frame (with superocket engine) for the featherbed, I noticed a great difference .
The beeser was fine, but the norton felt as though it was 'on rails'.
Has anyone else experianced  this? Are modern bikes better?

Singles / Re: The big boot
« on: 01 January, 2018, 08:52:13 »
I go the easy way with modern 20-50 grade for all.

Singles / Re: B44 rectifier
« on: 01 January, 2018, 08:50:51 »
thank you. Yes, I have worked that out and ordered one at 12.

Singles / B44 rectifier
« on: 31 December, 2017, 13:11:48 »
My bike died on the road, took me 1  1/2 hours to push it home.
No spark. Battery flat. Not charging.
Alternator giving 18 volts AC.
Rectifier giving 4 volts DC.
Do I need to replace the Finned rectifier?

I could not find a Zener diode on the bike, this must be in the rectifier??

Singles / Re: Oval throttle valve C15
« on: 27 December, 2017, 07:43:18 »
I rebuilt a Bantam and a C15.
Both would run perfectly one day, then refused to start for the next week.
For each one I 'bit the bullet' and bought new carbs - instant success!

Singles / Re: Oval throttle valve C15
« on: 25 December, 2017, 10:39:38 »
Give it a try first. It may be acceptable with the worn carb, after all, that was what it last ran with.

Singles / Re: B44, Bigend, Piston. Bad vibration.
« on: 23 December, 2017, 17:14:32 »
That Norton must have been a bad'en! Perhaps mistreated.

I think Ill stick with the B44 for now. The vibration can be tolerated, and it does respond heartily as i open the throttle.

Singles / Re: B44 riders
« on: 23 December, 2017, 17:04:17 »
PS, my model flies with a 60 cc, V twin fourstroke engine. Thats why I would favour that style in a bike.

Singles / Re: B44 riders
« on: 23 December, 2017, 17:02:18 »
I am not a mad speed freak. My pleasure is to make rapid progress, but safely. My no claims bonus would be 40 years plus.
A bike with power to spare is more pleasurable for normal riding, without ever using full speed..

When flying my present scale model, the skill is in making the model fly SLOWER than it wants to be, to imitate the speed of the fullsize aircraft.
So a quarter scale model of a 100 mph Sopwith biplane, would need to fly at at 25 mph. It takes little power to fly at this speed, but if the wind speed is 20 mph,
then the model should to do 45 mph into wind, and 5 mph downwind! Impossible, but we do our best.
The model has to be overpowered to achieve high scoring flight, including aerobatics.

Singles / Re: B44, Bigend, Piston. Bad vibration.
« on: 23 December, 2017, 08:49:27 »
My B44 has twin leading shoes brake. works well.
My C15 has the normal brake, smaller size. Works even better! I dare not put full pressure on it , for fear of locking the wheel.
I have made a twin leading shoe conversion for the c15, which I intended to summit for the club magazine, but I never got around to trying it.

Singles / Re: B44/C15 tool box under seat.
« on: 23 December, 2017, 08:41:05 »
I only took it to 70 on the clock, 60 true speed.
The bump was at about 40 mph.

I must admit that when I go on a trip, my son Jim is on has Fanny B, about 50, flat out.

Singles / Re: B44, Bigend, Piston. Bad vibration.
« on: 23 December, 2017, 08:37:55 »
Why was the Norton a mistake?

B44, low vibration? I wonder why? Or how?

I wonder if the b44 crank has insufficient counterbalance for the larger piston?
Mine was checked by Alpha Bearings.

Singles / Re: B44 riders
« on: 23 December, 2017, 08:30:57 »
Yes, I now know that my B44 speedo is 10 mph over reading. I had already recalibrated my C15 speedo, which reads 15 MPH over. (Plastic tape at 10 mph steps.
I have found it difficult to check with my satnav, which loses its battery power very soon on the bike. I will have to provide a 12 volt tapping.
Reading the small satnav speed is difficult, on the bike.

My real inquiry was to find out if ALL B44s are failing to reach the advertised top speed.
I know that my super rocket engine in featherbed frame bike would reach 100 mph 'on the clock' but I only did that once, to find out.
I never thought that speedos might read incorrectly, in those days. (1960s)
Traffic was much slower then, so my normal top speed would have been about 70, I was used to overtaking most of the time.

I travel over the country, mostly on Motorways, in my VW bus. This will keep up with the general flow - 80 to 90 MPH.
I often reach 100 mph, following sports cars or super-cars. It amuses me to think that those drivers see a white haired old geezer in a big van, on their tail!

Yes, I am naturally competitive. I was a trials rider for some years, and for most of my life i have competed  with model aircraft ( word champion 3 times, national champion 17 times.

If I wanted to just cruise along at modest speeds, I would have stayed with my little Bantam. Light and easy to manhandle.
I tried a 250cc Yamaha virago, which only weighed 300 lbs. It easily reached over 80 mph, with more to come, had I tried. But I wanted a classic BSA.

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