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Messages - R

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British Bikes / Re: Spronging forks question
« on: May 12, 2019, 11:33:43 PM »
There is a shop near me that can cut those shocks open, rework and regas them and reweld them up.
Had a set done ages ago, and they are great - they hard chrome and regrind the shafts too.
These guys get everything they can handle...
But you may have trouble finding such a place - they exist, but are hard to find ?
Ask around businesses in your area, motorcycle shops especially.

Identify these bikes! / Re: Barr and Stroud mystery bike
« on: May 11, 2019, 07:52:53 AM »

British Bikes / Re: JAP 750 v twin ,type MTS
« on: May 10, 2019, 11:49:20 PM »
A 300mm length of bronze from which I can turn up a set of main bearings costs mere chump change in comparison.

Didn't all early JAP engines have bronze main bearings anyway ?
As did plenty of the other makers.
So you'd probably get away with this, at a pinch.
Never mind that it probably needs a trickle of oil through them,
so it may be difficult to make them oiltight.

Japanese Bikes / Re: Honda CB250RS Cush Drive Bushes
« on: May 10, 2019, 11:43:26 PM »

I've heard that but it isn't true.

It was true at some point ?. My father accepted a late 1950s Benly as payment for something, and a big end bearing had gone.
Honda advised they were having some made, but the time frame was long and vague. And expensive ?
Other means were found to repair it.

I'd be surprised if those cush rubbers weren't in stock someplace in the world.
I ran into someone who had a stock of 40,000 sets of piston rings for something not common,
and he figured he had 10,000 years supply at current demand ...

British Bikes / Re: Coventry Eagle
« on: May 09, 2019, 10:54:58 PM »
Pretty little jigger, isn't it. And technically much to cast an eye over.
So have you bought it, or still pondering ?

One thing I would comment is that open primary looks like trouble, a more substantial
guard to keep clothing and boots/toes out of that primary chain and clutch looks essential.
Or you'll need to lay in a stock of boot repair materials... ?

Japanese Bikes / Re: Honda CB250RS Cush Drive Bushes
« on: May 09, 2019, 10:39:09 PM »
Do you have a parts book or microfiche that covers your model,
and/or do you know the correct part numbers for these ?
Essential for chasing up obscure stuff that no-one knows by sight.
A pic of what the old ones look like may be helpful too, if they are still recognisable.
Or a pic of the housing where they came from.

You tried the main Honda importer where you are ?
Honda used to have a policy that no older part would go unsupplied,
and has a central warehouse someplace that must stock a lot of stuff !
They airfreight as/where required around the globe, and this (apparently)
costs (much)  less than stocking stuff all over the place.

Its extremely unlikely car parts could be substituted, there must be squillions of varieties of rubber bits,
but an eagle eyed parts salesman may be able to advise. They are a vanishing breed these days though,
its all new hires and a computer that knows everything - but refuses to give away secrets !

Sometimes the wreckers are a useful source of such stuff, although finding a low mileage back wheel etc
for the right year/model may be wishful thinking ? But you can ask...

British Bikes / Re: Excelsior Universal 125cc - Rear Plunger
« on: April 29, 2019, 09:15:53 AM »
I'm sorry, I don't know where I got that from !
I saved a pic from somewhere, so there must be another similar enquiry someplace in a parallel universe ??

Cutting your plunger rod as mentioned would seem to be an option, if it can't be shifted.

British Bikes / Re: Excelsior Universal 125cc - Rear Plunger
« on: April 29, 2019, 02:46:59 AM »
There appears to be a nut threaded onto the shaft down low there.
Have you done as suggested earlier, and tried undoing that nut ?

British Bikes / Re: Stops When Hot
« on: April 25, 2019, 10:55:20 PM »
Something else to look out for, although maybe not related here, is that the fuel cap
has a tiny little hole in it to prevent a vacuum forming in the tank as the fuel is used up.
If this hole is blocked, the fuel supply can starve after a while.

Although it sounds like your problem is heat, like you say.
We see you investigating the spark timing on another thread here,
good idea, running retarded timing can make things extra hot....

British Bikes / Re: Correct Ignition Position
« on: April 25, 2019, 10:50:47 PM »
Have you investigated which way the advance/retard lever actually works ?
My old Enfield is difficult to start unless the timing is retarded a bit, but when running it much prefers to be fully advanced.

Also, you mentioned 'electronic' - is this an electronic ignition system, not the magdyno or magneto ignition it would have had originally.
Some electronic ignitions have an advance built into them, such that the spark timing advances with revs.
You could then have two forms of advancing the spark timing, which would not generally be a good idea ?

British Bikes / Re: Dunelt T S/A facecam
« on: April 17, 2019, 12:55:52 AM »

I have seen that engine photo in internet, and think its in museum in UK.

Indeed, it was just a random pic off the internet, for an example.

I've heard the one locally here was sold off a while back,
and there were no large spares. I'll see if can find where it went.

There must have been a spares list of some sort, alough it might be tough to track down if there were few engines sold.
Being illustrated is probably being hopeful !
Tried the VMCC ?

British Bikes / Re: Excelsior Universal 125cc - Rear Plunger
« on: April 17, 2019, 12:50:46 AM »
Ian was talking about the centre rods for Nortons.

You likely will have to get excelsior ones made up, although they are nothing particularly fancy. ?

British Bikes / Re: Dunelt T S/A facecam
« on: April 13, 2019, 04:30:42 AM »
Looks big for a 250 ?

British Bikes / Re: Dunelt T S/A facecam
« on: April 13, 2019, 04:11:40 AM »
Someone locally has/had one, what parts or info are you after specifically ?

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