Search found 379 matches

by Nambo
Fri Apr 07, 2017 1:31 am
Forum: Tech
Topic: Cannot stop it pinking.
Replies: 17
Views: 3297
Flag: England

Re: Cannot stop it pinking.

Here is what I am thinking now, the small spark plug I was recommended to use in my twin plug head was an NGK DR6HS, now this is a very soft/hot running plug equivalent to a Champion 9 heat range. Maybe the dyna coil puts out more heat than the lucas coils, just enough to tip this soft plug into the...
by Nambo
Thu Apr 06, 2017 10:42 pm
Forum: Tech
Topic: Cannot stop it pinking.
Replies: 17
Views: 3297
Flag: England

Re: Cannot stop it pinking.

Mine doesnt pink until you have given it some stick, then it gets so hot that it pinks all the time. I have a 932 carb from my 750 Commando on it, will this have the stepped spray tube?, what does the stepped spray tube do? What is the difference between a Commando needle and a standard 4 stroke nee...
by Nambo
Thu Apr 06, 2017 10:17 pm
Forum: Tech
Topic: Cannot stop it pinking.
Replies: 17
Views: 3297
Flag: England

Cannot stop it pinking.

B44 engine, it has a midrange megacycle cam, Ed V gas flowed the head, bigger valves, twin plug, larger bore exhaust. Now this engine does run hot, especially having the smaller fins of the round barrel, but it used to run well, never pinked when I had it in the oil in frame. Now I built a Starfire ...
by Nambo
Thu Apr 06, 2017 12:00 pm
Forum: Tech
Topic: B50 MX foot rest alternatives
Replies: 4
Views: 1243
Flag: England

Re: B50 MX foot rest alternatives

If you fit the TR5T footrests, you might consider fitting the TR5T rear brake lever as well which is just the same as the BSA, but shorter.( Unless you have really big feet).
by Nambo
Sat Mar 04, 2017 12:27 am
Forum: Tech
Topic: 8 inch TLS on a 1970 Starfire
Replies: 12
Views: 1992
Flag: England

Re: 8 inch TLS on a 1970 Starfire

l have a 19 inch front wheel in my Starfire, perhaps you might notice greater stability but slightly less quicker steering?
I would like to know more about a T100 fitting in a Starfire frame. Any pictures?

Image
by Nambo
Mon Feb 27, 2017 2:18 pm
Forum: Tech
Topic: Suddenly I have a bad flat spot
Replies: 8
Views: 1646
Flag: England

Re: Suddenly I have a bad flat spot

Well the valve clearance,s were a little tight, but that wasn't the problem as it's still the same. What happens is if you increase the throttle gently at say 3000 revs, nothing is detectable from the engine e, but it feels as if the back brake has come on momentarily, then it clears and revs freely...
by Nambo
Mon Feb 27, 2017 12:52 am
Forum: Tech
Topic: Suddenly I have a bad flat spot
Replies: 8
Views: 1646
Flag: England

Re: Suddenly I have a bad flat spot

I changed the spark plug, HT lead is copper, looked ok when coming home in the dark and the pouring rain tonight.
Will check the clearances tomorrow, I do tend to have them Rupert Ratio tight.
by Nambo
Sun Feb 26, 2017 3:11 pm
Forum: Tech
Topic: Mx fork mods
Replies: 21
Views: 4205
Flag: England

Re: Mx fork mods

Regarding Progressive springs listed for the Trident and the B50, I purchased a pair for my T150v from Les Williams, so presume they were genuine. They were rubbish in the Trident, made it feel like a 1970s H*nda, they are far to soft for such a heavy bike, so I tried them in one of my OIF BSA,s and...
by Nambo
Sun Feb 26, 2017 2:54 pm
Forum: Tech
Topic: Suddenly I have a bad flat spot
Replies: 8
Views: 1646
Flag: England

Suddenly I have a bad flat spot

My daily rider B50 has been running very well indeed for a long time then all of a sudden, without me having touched anything, it has developed a bad flat spot in midrange as if the needle position was wildly out. It's fine at low throttle openings, and fine at high speed when I drive through it, bu...
by Nambo
Sun Feb 26, 2017 2:37 pm
Forum: Tech
Topic: Cam wheel
Replies: 10
Views: 1711
Flag: England

Re: Cam wheel

I fitted such to my B25 when I found my thick wheel binding.
If the cam was B50 rather than B25, what difference would this make as they both have the same lift specs?
by Nambo
Wed Jan 11, 2017 11:29 am
Forum: Project bikes
Topic: 1978 CCM Replica Build
Replies: 223
Views: 41488
Flag: England

Re: 1978 CCM Replica Build

Lovely, but when are you going to fit some rear shock spring covers?
by Nambo
Fri Jan 06, 2017 6:54 pm
Forum: Tech
Topic: Camshaft a little tight
Replies: 16
Views: 2696
Flag: England

Re: Camshaft a little tight

Well I think I might have resolved this. In my box of camshafts, I had a slightly shorter one with the thin pinion wheel. I presumed this to be a B50 one, though I cannot for the life of me understand why I would have a spare B50, I am wondering if it is a late 250 cam?, what is the difference? Anyw...
by Nambo
Fri Jan 06, 2017 1:07 pm
Forum: Tech
Topic: Camshaft a little tight
Replies: 16
Views: 2696
Flag: England

Re: Camshaft a little tight

Inner timing cover is off, I will take a spare cam pinion to an engineers to have 5 thou taken off Just by undoing the inner cover screws very slightly, it all frees up, so I dont believe its that the bushes are out of line. Or maybe I will go with that inner cover gasket? Why is one not shown in th...
by Nambo
Wed Jan 04, 2017 8:59 pm
Forum: Tech
Topic: Thin V thick camshaft pinion?
Replies: 5
Views: 1330
Flag: England

Re: Thin V thick camshaft pinion?

I might well try taking a bit off a pinion, I have a few spares, will see if the cutting/milling tools I have ordered will be easy to shave a bit from the outer bush. The B50 cam is slightly shorter and uses a thinner key, I presume the B25 cam uses a thinner key as well when it has the thinner gear...
by Nambo
Wed Jan 04, 2017 8:53 pm
Forum: Tech
Topic: Camshaft a little tight
Replies: 16
Views: 2696
Flag: England

Re: Camshaft a little tight

I originally built this engine from parts into a set of Blazer crankcases, now I am building it into a set of B25 cases, the crank originally came from the BSA cases but apart from that, everything is from parts.
by Nambo
Wed Jan 04, 2017 2:41 pm
Forum: Tech
Topic: Thin V thick camshaft pinion?
Replies: 5
Views: 1330
Flag: England

Re: Thin V thick camshaft pinion?

If anybody has a spare spacer they wished to sell me, that would help.
Cheers
Pete
by Nambo
Wed Jan 04, 2017 2:33 pm
Forum: Tech
Topic: Thin V thick camshaft pinion?
Replies: 5
Views: 1330
Flag: England

Thin V thick camshaft pinion?

Regarding my other thread on my camshaft being tight, I wonder if I can get around it by fitting the thin camshaft pinion I have in my box of bits? Questions therefore:- I understand the last of the 250s used the same thin pinion as the B50 along with a spacer? Where the B25 camshafts the same regar...
by Nambo
Wed Jan 04, 2017 1:14 pm
Forum: Tech
Topic: Camshaft a little tight
Replies: 16
Views: 2696
Flag: England

Re: Camshaft a little tight

So the cam bush in the crankcases is fully home, so is the cam bush in the inner timing cover. I dont want to remove that timing cover bush in order to take a couple of thou off in my lathe, as doubtless it will get damaged. I dont want to use abrasives whilst in situ, so I am wondering if there is ...
by Nambo
Tue Jan 03, 2017 7:00 pm
Forum: Tech
Topic: Camshaft a little tight
Replies: 16
Views: 2696
Flag: England

Re: Camshaft a little tight

Cheers Stew, thats what I love, taking these engines apart again the next day! Or maybe I could fit one of these :- http://www.ebay.co.uk/itm/BSA-B25-TRIUMPH-TR25-INNER-GEARBOX-CASING-GASKET-NEW-UK-MADE/272316338076?_trksid=p2045573.c100033.m2042&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26a...
by Nambo
Tue Jan 03, 2017 6:40 pm
Forum: Tech
Topic: Camshaft a little tight
Replies: 16
Views: 2696
Flag: England

Camshaft a little tight

I rebuilding my TR25 engine back into B25 crankcases. The crank shaft turned freely until I bolted up the timing covers, gearbox is still free, so it will be the camshaft sandwiched between its two bearings. Now it is only slightly stiff in that I can just turn it by hand on the rotor, a torque wren...
by Nambo
Tue Nov 29, 2016 8:20 pm
Forum: Tech
Topic: 250 crankshaft hardening?
Replies: 14
Views: 2352
Flag: England

250 crankshaft hardening?

The late B25 crankshafts, were they hardened?
If I have a 10 or 20 thou overgrind, will these cut past the hardening and will the crankpin need rehardening?
If so, who in the UK does such a job?
by Nambo
Fri Nov 04, 2016 8:31 pm
Forum: Tech
Topic: B44 piston
Replies: 37
Views: 6552
Flag: England

Re: B44 piston

I too would only recommend the JE piston. All my BSA singles were noticeably smoother running this lighter piston, plus they run with a tighter clearance. I would certainly avoid the Italian pistols however, I did try one in a 250, not only was it heavy, after a very few thousand miles, a wedge shap...
by Nambo
Sat Oct 29, 2016 11:14 am
Forum: Tech
Topic: Economy
Replies: 32
Views: 5063
Flag: England

Re: Economy

My 66 B44 used to return 82 mpg English gallons hard riding in London city commute, half the journey is sitting at traffic lights then racing away when the lights change. I used to do 120 miles between each fill up of that tiny Victor tank. The B50 I now use is nowhere near as good.
by Nambo
Fri Oct 28, 2016 8:35 pm
Forum: Tech
Topic: 108 Needle Jet on a B44?????
Replies: 5
Views: 1107
Flag: England

108 Needle Jet on a B44?????

Since I put m B44 engine in a Starfire, it runs really lean midrange. I put a 107 needle Jet in which made it run better, I lifted the float height so that the float is now level with the bowl, I can run it but it wont take more than a gentle opening of throttle so I have ordered a 108 jet I a think...
by Nambo
Wed Sep 21, 2016 10:37 pm
Forum: Tech
Topic: Air Lever
Replies: 14
Views: 2876
Flag: England

Re: Air Lever

My B50 would start, but I really had to give it a couple of mighty kicks to create enough suck to draw the fuel up.I fitted a choke and now it starts first kick so much easier. I now anticipate still being able to ride this bike when I am old. I recently sold my B44 to a fella that he just could not...
by Nambo
Wed Sep 21, 2016 1:10 am
Forum: Tech
Topic: crappy fork gaiters
Replies: 32
Views: 5134
Flag: England

Re: crappy fork gaiters

I have pictures here somewhere of how well neoprene gaitors from a modern Triumph Bonneville look and fit, they will last forever.
by Nambo
Fri Sep 09, 2016 8:49 pm
Forum: Tech
Topic: B25 won't rev past 5k
Replies: 85
Views: 13123
Flag: England

Re: B25 won't rev past 5k

Sounds a bit like the problem oil in frame 250,s get with modern petrol and those lozenge silencers, great at low revs, great at high revs if you could get the bike past the mid range stuttering. Fresh charge in the combustion chamber being contaminated with exhaust carried back by the reverse press...
by Nambo
Fri Aug 26, 2016 8:08 pm
Forum: Tech
Topic: 68 hub into 70 Starfire forks (with 70 TLS brake plate)?
Replies: 10
Views: 2253
Flag: England

Re: 68 hub into 70 Starfire forks (with 70 TLS brake plate)?

I would like to know the logistics of fitting a T100 engine in a Starfire.
by Nambo
Fri Aug 26, 2016 7:35 pm
Forum: Tech
Topic: Spindle movement
Replies: 13
Views: 2237
Flag: England

Re: Spindle movement

Grease retainers won't explain spindle in and out movement, are you sure you had that spacer that fits between the large shoulder on the right hand side of the spindle and the inner face of the right hand bearing? Chamfer towards the bearing. Leaving this out means that the spindle pokes out of the ...
by Nambo
Fri Aug 26, 2016 6:58 pm
Forum: Tech
Topic: Spindle movement
Replies: 13
Views: 2237
Flag: England

Re: Spindle movement

What's lateral movement? I know on one of the twin leading shoe conical hubs I built, I initially had some movement where the spindle slides in and out, or maybe it was that the brake plate would rub the hub?, long time ago, any way, the problem was some spacer that fits over the wheels spindle, on ...
by Nambo
Fri Aug 19, 2016 7:36 am
Forum: Project bikes
Topic: Nambo builds a Starfire
Replies: 28
Views: 5245
Flag: England

Re: Nambo builds a Starfire

're the stainless exhaust colour, Ed V made both of them, you can see from my first picture in this post when I had this engine in my Fleetstar the colour the exhaust turns, though it was running hotter then with less than efficient piston rings burning some oil, now I have a J E piston with total s...
by Nambo
Thu Aug 18, 2016 8:17 pm
Forum: Project bikes
Topic: Nambo builds a Starfire
Replies: 28
Views: 5245
Flag: England

Re: Nambo builds a Starfire

One of the reasons I chose that dark colour is those big side panels, I think they are too obvious with a light bright colour like red. I also think the blue looks good with the gold plated badges with translucent red paint.
by Nambo
Thu Aug 18, 2016 5:57 pm
Forum: Project bikes
Topic: Nambo builds a Starfire
Replies: 28
Views: 5245
Flag: England

Re: Nambo builds a Starfire

Wheeled it out of the workshop (front room), for the first time today, started first kick, as they do, just need to get it MOTed now. http://i1061.photobucket.com/albums/t472/Nambocttr/DSC00908_zpsdiq2ozfo.jpg http://i1061.photobucket.com/albums/t472/Nambocttr/DSC00907_zps2j694nnv.jpg http://i1061.p...
by Nambo
Sun Aug 14, 2016 6:53 pm
Forum: Tech
Topic: Twin plug head, should I now retard the ignition?
Replies: 9
Views: 1645
Flag: England

Re: Twin plug head, should I now retard the ignition?

Ed V flowed it, I matched the carb to the port, I wanted more power but midrange not top end. Goes a hell of a lot better than my standard one.
by Nambo
Sun Aug 14, 2016 6:48 pm
Forum: Tech
Topic: Starfire shocks, how thick springs?
Replies: 41
Views: 6288
Flag: England

Re: Starfire shocks, how thick springs?

So I sent the shocks back to Hagon, they came back and I fitted them today and they are fine now. A letter said something about a clearance being too tight. I would rather they refunded my £12 postage rather than the handful of Hagon stickers they sent as compensation.
by Nambo
Sat Aug 13, 2016 8:23 pm
Forum: Tech
Topic: Twin plug head, should I now retard the ignition?
Replies: 9
Views: 1645
Flag: England

Re: Twin plug head, should I now retard the ignition?

Never tried this engine with one plug. I have a Concentic carb, 30 or 32mm, cannot check as I am at work. The charging system is three phase Lucas with a podronics and the smallest Yuasa bike battery that I swap between all my bikes. 're RITA, my Commando doesn't even have three phase, but the Comma...
by Nambo
Thu Aug 11, 2016 6:50 pm
Forum: Tech
Topic: Twin plug head, should I now retard the ignition?
Replies: 9
Views: 1645
Flag: England

Re: Twin plug head, should I now retard the ignition?

Cheers guys, comp is 9:1, straight fuel, midrange Megacycle cam, Ed V disclosed and larger valves and exhaust, RITA ignition, the coil is one of those green dual output coils? Dynamic something?
by Nambo
Tue Aug 09, 2016 10:16 pm
Forum: Tech
Topic: Twin plug head, should I now retard the ignition?
Replies: 9
Views: 1645
Flag: England

Twin plug head, should I now retard the ignition?

My B44 has a twin plug head so I am assuming a quicker burn means less advance is needed?, If so, by how many degrees should I retard it?,

Pete
by Nambo
Tue Aug 09, 2016 10:14 pm
Forum: Tech
Topic: Starfire shocks, how thick springs?
Replies: 41
Views: 6288
Flag: England

Re: Starfire shocks, how thick springs?

After confirming my new silentbloc bushes were not binding at all, I tried fitting just one shock and then just the other. Though the bike then sank down an extra inch, sitting on it, each individual shock was just as solid. I rang Hagons and have today sent them back. The fella said sometimes they ...
by Nambo
Sun Aug 07, 2016 10:23 pm
Forum: Tech
Topic: Starfire shocks, how thick springs?
Replies: 41
Views: 6288
Flag: England

Re: Starfire shocks, how thick springs?

Chris, did you send the shocks back to BBB or back to Hagons. Which shocks should I buy instead?