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Messages - Lobo

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Recommended Sources for Parts and Services / Re: Timing Light
« on: July 09, 2019, 12:54:13 PM »
... try your smartphone for a tacho app... I’ve got one called ‘Strobelight’ (is a pic of a fan)

CB500/550 / Re: Reg Rec for Lithium Ion
« on: July 06, 2019, 02:55:46 AM »
Rather than mod your bike, is a safer bet not simply buying a ‘drop in’ Lithium type battery, with the ‘CB agricultural charge circuitry’ built in?

I bought 3 of the below 5 or 6 years ago now for my Hondas / Guzzi, and enjoy the fit and forget aspect of ‘em, ie no trickle charging etc needed through the winters. No signs of age (yet) and feel like an empty box when you pick them up. Amazing.

If you do go this route... you cannot use a normal lead acid / gel charger to charge them off the bike (if ever needed)... you’d have to invest in the correct LiFe do-dah.


Misc / Open / Re: Picture for Hairygit
« on: June 07, 2019, 11:34:19 PM »
Here ya go Trig.. a relatively simple path.

CB750 / Re: No spark
« on: May 22, 2019, 11:55:33 PM »
Phil... working from an old very grainy & cluttered wiring diagram, those connections to your ‘logic gate’ (in order) are NEUTRAL, IGNITION LIVE, EARTH and STARTER SOLENOID switched Earth. (ie as you press the starter button the YELLOW / RED is earthed at the handlebar switch)
... so my guess is that the STARTER MOTOR Engine start logic is dependant upon the Ignition ON & bike in NEUTRAL (ie you could bump start it in gear - very necessary)

But, you mention sparking at the points, which tells us the low voltage circuit of the coils are energised, and defacto the HT circuits are good to go.... ie I see little point in by-passing that logic switch.

I know it can be irritating when folk suggest the obvious, and sorry, but are you cranking via the starter motor? This is a massive drain (80-100A) and will likely kill off any spark if the battery is a bit weak. (And more especially so if you have an electronic ignition, as these are voltage critical.)

Even if you are indeed kicking it over, significant battery drain is already taking place (coils, voltage regulator ... lights (?)) which will sap energy to the HT circuit.

Staying with the battery, how old is is... often enough they appear fine, and only fail (to deliver significant current) under load. Have you any other battery you can swap-out?

As mentioned before... fuel... carb drains unscrewed to check fuel actually  in ‘em?

And sheesh... bloody Hillman Imps eh? Those were the days... every weekend in breakers yards climbing over / into vehicles; trying to fettle air locks in the wretched heating system... um everything.

Good luck,

Misc / Open / Daisy & nipples
« on: May 21, 2019, 01:04:23 PM »
Ok, got your attentions.. (!) 😀 (Steve - hope ya don’t mind a bloody car gate crashing the SOHC Forum - sorry)

Not my Hondas, but rather my Kombi (Daisy), whose spark plugs have those wretched screw on nipples. These nipples seem to be always loose / unscrewing, and the plug leads matings kinda clamped but never gripping... so the question is, are there HT losses / spark inefficiencies in this connector system? 
I know it’d be fairly easy to swap the leads over to the screw thread type attachment - but they’re new etc and I’ll wait if no big deal.

CB350/400 / Re: Slow engine rebuild progressing,however!
« on: May 20, 2019, 12:17:14 AM »
Greg; you describe exactly the situation when I returned my restored engine to the frame. I rang the engine builder in a bit of a huff, he was nonplussed and ‘guaranteed’ his work; and suggested to simply proceed and that once oil was put in the engine / ‘box and circulated all would be fine.
And indeed it was.

Not saying that this is your issue, but if you can’t find an answer then all may still be ok.


CB750 / Re: Front brake lever travel
« on: May 13, 2019, 12:46:03 AM »
...the 400F has semi-sintered pads now too - which sound like a bag of small washers being ‘tinkled’ when free running. A slight dab of brake and the noise disappears. Is this normal / will it settle?

« on: May 13, 2019, 12:31:20 AM »
Julie... you have to put positive spin on everything and see the plusses.  Be grateful; Trig could have collected Morris Marinas, or Austen Allegros - now those are the ladies who really deserve our sympathies 😂

CB350/400 / Re: Front brake question
« on: May 10, 2019, 09:13:32 AM »
Tayside... you cost me a couple of hours work today!

Anyways, was changing the K2’s pads over to semi-sintered, and took a harder look at the caliper ‘nod’... which in truth was now concerning. The ‘nod’ was radial, and all due the pin slop in the top / bottom carrier.
Engineers look away now, but I fixed it by using lengths of feeler gauge cut to match the pin circumference and inserted into the carrier. To take the split pin I simply used a punch once the holes were lined up...
FYI the feeler gauge thicknesses needed were 9 & 10 thous; implying the carrier holes are about 20 thou oversized. (The pin is new). (Odd jobs shim-washers went back in)

There is no play in the caliper now, and I have bought myself a bit of time whilst I either source a new carrier or quality engineering to fabricate an insert.


CB750 / Re: Front brake lever travel
« on: May 10, 2019, 08:56:23 AM »
Today fitted the EBC Semi-sintered pads, and although only a dozen miles under the clock first impressions are good.
I can make the forks dive now, which no doubt will manifest itself as a new problem with fork oil seep down the track 😅.

Thanks all for the inputs,

CB350/400 / Re: Front brake question
« on: May 09, 2019, 08:23:47 AM »
...for the first time in a year or so I had 2 pints of Guinness for lunch.  Dear god I’d forgotten how good it is...

CB350/400 / Re: Front brake question
« on: May 08, 2019, 10:59:26 PM »
Hi Tayside,

6 yrs ago (!) I started this thread - found it now / may shed some light on your issue?

CB350/400 / Re: Front brake question
« on: May 08, 2019, 08:03:34 AM »
... I can move my K2’s caliper up/down about 3mm due radial wear. Has always been like this. The 400F however has zero play, and the SS50 about 1mm. Will be interesting to learn of any published allowable tolerances.

CB750 / Re: Front brake lever travel
« on: April 25, 2019, 12:21:40 PM »
Hey Rob / Mark... thanks for the info... have ordered a set for each bike. (K2 + 400F)

Other Bikes / Re: Electrics question
« on: April 20, 2019, 12:18:18 AM »
... +1 with Mike .... as long as you don’t slip up & ground some negative wire to the frame.
Yes, the fuse will protect the conventional things, but electronic ignitions /rectifier-regulators and the like can be intolerant of wrong polarity. (the fuse won’t necessarily blow in this case as the currents relevantly small)

Regarding your ‘fluctuating’ voltage - I think perspective is needed here; you’re concerning yourself with 1/100ths of volts. Back when your James was built, a digital voltmeter would not have existed, and an analogue scale would have been “it”.....with the needle fairly static somewhere abouts the 6v region, on perhaps a 12v expanded scale.
And with that... folk would have been happy.

So, my thoughts only; personally I wouldn’t bat an eyelid at those readings.

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