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Messages - SumpMagnet

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1
CB750 / Re: Vht231d minimum spraying temperature to cure
« on: March 25, 2024, 02:12:21 PM »
I would also make sure the paint cans are not cold. I was advised once to stick the cans in warm water to heat them, but I didn;t fancy putting a pressurised can into anything hot...so I just bring them in the house the day before I want to use them to warm them up. As well as the curing process, aerosols don't like cold or damp conditions, and the paint may not atomise properly leading to spattery paint.


2
Misc / Open / Re: Barn find!
« on: March 20, 2024, 10:16:06 PM »
Looks like a really interesting project!

3
Project Board / Re: My 750F2 project.
« on: February 04, 2024, 07:20:23 PM »
That Devcon putty looks like good stuff. Then I checked hte price for it and ...ouch. In the UK its roughly £100 for a 500g tub. they don;t seem to make it in a smaller size.

4
Project Board / Re: My 750F2 project.
« on: January 30, 2024, 06:30:44 PM »
i'd be happy with that as a home plating job. Looking at the 'before' and 'after' states.

I have got myself a bright zinc plating kit and plan to have a go when it gets a bit warmer, so if I can get that sort of coating I will be pleased enough.

5
Other Bikes / Re: Didn't need a new project...but I got one!
« on: November 28, 2023, 06:51:06 PM »
Nice! I have a slight 'problem' to resolve before I can really crack on with the engine. Namely the distributor mounting hole. The thing was mothballed after it developed a nasty habit of the distributor popping out while running. This apparantly isn't good. The mounting retainer was as tight as it could be ( overtighten, and you ruin the thing... ) and that's the only thing that holds it in.
Diagnosis...an ovalled out hole in the crankcases. Allows the thing to wabble about until it loosens the locking plate and out it pops.

Need to find somewhere to get that seen to. Dad gave me a spare set of cases, but the worn set are the originals, and I would like to preserve that. The spare set also had been blasted at some point....and ALL the cracks, crevices, exposed bolt holes and so on were full of blast medium. Took me days to flush it all out. It needs new rings, as compression is a little low ( well..7:1 as standard isn;t exactly high to start with!) and there is no bore wear to speak of. Even if there is, it's on +20 barrels, so I can do that if needed. He'd also clearly been planning a 500 conversion... in the spares pile I found a 500 head, and some barrels that were still on standard bore, but in need of a rebore.

Probably not going to go that route, but they are there.

Already bought some odds and ends from Monty, needed pushrod oil seals...and he stocks the right ones for an early model. Found lots of ropey suppliers who don't specify model year.

But overall, I am enjoying playing with it.

Just a shame they hadn;t discovered metric fasteners. Or in fact ANY form of standard for threads that they would stick to for the whole bike!

6
Other Bikes / Re: Didn't need a new project...but I got one!
« on: November 26, 2023, 12:23:54 PM »
I should be working on the Honda....haven;t done much to it for months....but this thing is kind of getting me hooked. If I am not careful I will be getting a flat cap, leather elbow patches and a pipe to poke at people while I tell them the shade of Polychroatic Blue on the petrol tank is all wrong for a 1947 Triumph Wombat when the total loss oil system was brought in after the Boer War.

Bike has had a total stripdown, and I am sorting out some issues with the rolling chassis before I start into the engine.


Found some of the 65 year old tinware wasn't perfect too. All sorts lurking under the paint! Nacelle top was the first thing

Holes pulled through and opened up. Welded them up and redrilled. A lot of the holes had been ovalled or slotted to make the thing fit. It's hidden under trim strips, so doesn;t show..but these had broken right through.

Fixed them all and painted it. Stuck with my Dad's choice of paint colour. Ford Cosmos Blue. Similat to the original..and ..well..it's how I remember it.

Front mudguard was next. A patch had been brazed in where the rear stay mounted. Should be a bracket rivetted to the mudguard. There was a bolt, and a horrid lashed up bracket on the inside. No. Not having that!
Ground off the braze and removed the patch. You can see what it was covering.

Chopped out the damaged area and welded a patch in. Needs cleaning up, but it's solid.


Have discovered the joy of welding 65 year old tinware. Knowing it's virtually irreplacaeble ... Did see one early front mudguard for sale. Rusty as anything...£95. One soundish one I saw went for £200. Always at the back of your mind when you blow a hole through....you aren;t going to easily find another.

So I practiced on the piece I chopped out to get the settings right, slowed it down and made tiny little stitch welds. No holes. Even in the freezing cold, I had a bit of a sweat on until it was done.

7
CB750 / Re: Centre Stand
« on: November 08, 2023, 08:18:51 PM »
I was fortunate indeed ... my centre stand pin came out and was actually in good enough condition to be re-used!

8
Misc / Open / Re: Sleeper train journeys
« on: November 02, 2023, 11:14:31 PM »
Did the Caledonian Sleeper from Euston to Fort William a few years back. Was very pleasant. Ben Nevis, the great Glen ... and it just so happened that the Scottish 6-day trial was on.
Normally end of April, beginning of May.
Ben Nevis distillery was nice too. Very nice 10yr old single malt.

The single track section running through the Highlands is very scenic, and we went through that as the sun was sinking on the way back. Spectacular.

9
CB500/550 / Re: The 500 exhaust conundrum.
« on: October 15, 2023, 11:08:05 AM »
Exhaust is a dilemma.

I got the same problem. I know what I want, but nobody makes it in a form I can afford. But there isn;t much in the aftermarket tht looks right.
I think back in the day I ahd ONE bike that actually still had original exhaust fitted, and that blew a silencer out after a year. Everything else came with a 4-1.

I loved the old Harris pipes. New options are limited, and used pipes seem to be basically people selling rusted junk for hundreds. Or hacked off downpipes....

10
Anorak's Corner / Re: Gatepost Plating kits
« on: October 08, 2023, 08:27:20 PM »
I was wondering where you could get a kit big enough to do gateposts...

11
Other Bikes / Re: Didn't need a new project...but I got one!
« on: September 22, 2023, 08:55:50 PM »
thanks Dave, I'll sound him out and see what he says

12
Other Bikes / Re: Didn't need a new project...but I got one!
« on: September 22, 2023, 08:14:27 PM »
I rode it for a few hundred miles around Wales quite a few years back. Brakes are.... no. 7" SLS. Stop faster if you put your feet down!

Primary chain tensioner is a pretty crude device, but the bottom end had all new bearings and bushings not that many miles ago. The old man is the Triumph specialist, but as I recall, it's roller bearing one side, and plain bushing the other. Hand ream and much engineers blue went into the thing. It's a foreign world to me! Full of strange bolt sizes and spanners

 If anyone knows where I could get the case repaired, I would be interested to know. It's the original motor with corect matching numbers, so even if I swap the cases to use it...I was planning on getting the originals repaired. I assume it''s a case of machining it out and putting a sleeve in, or welding up and recutting.

13
Other Bikes / Didn't need a new project...but I got one!
« on: September 22, 2023, 06:11:46 PM »
Been struggling off and on to find time to finish my 750F2 ..... and doing a load of stuff to my daily ride....and then, well..I got made an offer I couldn't refuse.

this is basivcally a family heirloom. My father bought it some 45 years ago, slowly brought it back to standard, then it got mothballed for a bit, partially pulled apart, then sort of left. He was busy renovating other folks bikes, and she got a little neglected. I was asked to give it a new home....and had to say yes.
Comes with some issues, needs cosmetics and most seriously...the distributor had been popping out, which was traced to ovalling of the crankcase opening where it sits. I have a spare set of cases, and a 500 head and barrel ( +20...but needs a rebore) Plus an assortment of other bits and pieces. 2 sets of exhausts, electrical goodies....3 boxes full!

So now I got that to play with as well!

For the record, she's a 1959 Triumph 3TA

The 500 top end is a straight swap, which is why I think Dad bought it. Gives a useful increase in performance.

Paint has a number of issues, but from a distance away...it looks pretty. And it's complete. Nearly.

https://i.imgur.com/hHkzd6K.jpg

14
CB500/550 / Re: stripped threads in engine for exhaust
« on: September 09, 2023, 11:33:55 AM »
For an area of high heat like an exhaust port, I'd go Timesert over Helicoil.

I have had helicoils 'unwind' themselves due to the differential expansion comared to the alloy head. More hassle than a Helicoil....but worth it in the long run

15
Misc / Open / Re: CD175 with tasteful mods - I like it
« on: July 18, 2023, 10:22:33 PM »
I really like it.
Not one for the purists, but I like it.

Not a clue what is going on with the tape, as the throttle wasn't moving as it should when he tried to open it. Just bizarre.

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