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Messages - Spitfire
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1681
« on: June 27, 2007, 07:15:11 PM »
Yes the red suit was great but for rallies the serious stuff came out, PVC chemical proof suit, a lot heavier and more waterproof. When I checked RCM out and saw it had not been taxed for so long I assumed it was dead, I wonder just how many bikes there are out there in peoples gardens, garages and sheds ?
Cheers
Den
1682
« on: June 27, 2007, 07:09:18 PM »
You may have problems removing the motor with the carbs attached, the other alternative would be to either try a hair drier or cut the rubbers if you are going to renew then anyway.
Cheers
Den
1683
« on: June 27, 2007, 07:05:25 PM »
Hi Jack, When I was riding my 76 F1 regularly it had no great problems hitting an indicated 125 mph. Your bike should not really be starting without choke, what is the state of your air filter, have you a standard airbox set up ? The F1 carbs should have a 105 main jet, 40 slow jet, and the pilot air screw should be approx 1 turn out. The carbs work on three basic setting at different throttle openings, see attached diagram which I got from another site. You should check your ignition timing closely, is the advance unit free and not siezed up. Cheers Den 
1684
« on: June 25, 2007, 07:04:53 PM »
Hi Andrew,
Steve is correct, when the carb rubbers are new all it takes is to push down and back on the carbs and they will fall off. But with old stiff rubbers it gets to be more difficult. Presumably you have completely removed the airbox and slackened (or removed) the hose clips on the rubbers nearest the cylinder head ? This is for a CB750, not sure about others.
I have just replaced the carb rubbers on my 76 CB750F1 and the difference is amazing.
Cheers
Den
1685
« on: June 25, 2007, 10:25:28 AM »
Hi Jack,
Would say that there is something mighty wrong if your bike is that slow, would do a complete service on it if I was you, check the points, timing, valve clearances, cam chain adjustment, carb settings, air filter, basically everything. I got a very good F2 manual from David Silver spares, it is not a general CB750 manual, it is a dedicated CB750F2 manual, give them a call.
Cheers
Den
1686
« on: June 24, 2007, 02:58:48 PM »
Hi Jack,
If you haven't got around to the map yet I live on the Wirral, unfortunately as I am very slow and carefull these days (and skint) it looks like my rebuild will miss the summer this year.
Cheers
Den
1687
« on: June 24, 2007, 02:53:11 PM »
Sounds like you liked to play around with your bike as well as I did, when I bought the K1 it had a dented tank so I filled it and sprayed a white undercoat ready for the gold, it looked that good that I changed my mind and sprayed it white. See pic of a cold and wet day in the 1970's. Unfortunately a vehicle search would indicate that my old bike is dead. Then came the 900cc kit, Koni's, steering damper, clip ons, 4-1, and 410.19 and 425.18 TT100's, great fun. But now I am doing the opposite and returning my F1 to stock, off has come the headlamp brackets, fork brace and most of the F2 bits, apart from the tank and seat which I will keep black. Cheers Den  Post edited by: Spitfire, at: 2007/06/24 14:54
1688
« on: June 23, 2007, 08:01:29 PM »
Hi and welcome, don't worry about dumb questions, they often make the experts scratch their heads and re examine things.
Cheers
Den
1689
« on: June 23, 2007, 07:59:45 PM »
Hi Jack and welcome, where are you based ?
Cheers
Den
1690
« on: June 23, 2007, 07:58:13 PM »
Yes if my memory serves me right the rack was a Craven and I'm pretty sure that it did fold back to enable you to swing the seat over. Can't understand people not liking the F1, I had an early KO which was probably the best bike I have ever owned, then I bought a K2 new in 1972 and was very dissapointed, it was very slow and bland. I sold it a year later and bought a K1 which was much better, it was even better when I fitted a 900cc conversion. I traded it in for the F1 in 1976, the F1 was a vast improvement on the K2 and later K's, but it does not have those four flashy chrome pipes and the classic CB750 looks. Performance wise it was a step back to the K0 and K1 days with better handling. The F2 was even better but with a tendency to be more fragile than the K's and F1's.
Cheers
Den
1691
« on: June 22, 2007, 07:59:16 PM »
OK try again to attach the pic  Post edited by: Spitfire, at: 2007/06/22 20:00
1692
« on: June 22, 2007, 07:56:58 PM »
Just found an old photo of mine when it was fairly new, the exhaust is stock Honda with a Dunstall silencer, which I may re use when I finish the rebuild, makes a nice sound.
Cheers
Den
1693
« on: June 21, 2007, 05:40:44 PM »
Well spotted that man, if you are having problems in the wet try sealing the HT leads where they go in the coil, I used Araldite in the old days but nowadays some doorframe sealant would do a better job. If it works I've posted a photo of the wheel bearing retainer removal type tools I use, very low tech. Cheers Den 
1694
« on: June 21, 2007, 05:22:55 PM »
Nice looking bike you have there, but then again, it looks just like mine !
Cheers
Den
1695
« on: June 21, 2007, 05:19:40 PM »
Hi Mick,
Just checked my F2 and the frame number is CB750G-XXXXXX, the engine number is CB750GE-XXXXXX, my F1 is CB750F-XXXX and CB750-E-XXXX.
Sounds like an F2 frame, especially with the rear disc.
Cheers
Den
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