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Last train to Glasgow Central..........Last Traaaain......

Re: Last train to Glasgow Central..........Last Traaaain....

Postby Matt Spencer » Thu Oct 20, 2016 6:02 pm

Looking Good . I suppose they even do repos of the joMoCo sticker these days ?? otherwise ya gota scan it , pro prosperity , Er Prosthingo .

68 ?? . Fundamental is it goes . Like Stink . Originality is for glass cabinets . They all whine about monoblocks , but you could tell the Concentics
by the missfire on transition . :D Glass Pack Straight Thru mufflers have been known to improve matters . The Long Ones , preferably . :D :D
The Japanese response to ' styling ' , was to add more .
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Re: Last train to Glasgow Central..........Last Traaaain....

Postby auldblue » Sat Oct 22, 2016 9:44 am

Matt Spencer wrote:Looking Good . I suppose they even do repos of the joMoCo sticker these days ?? otherwise ya gota scan it , pro prosperity , Er Prosthingo .

68 ?? . Fundamental is it goes . Like Stink . Originality is for glass cabinets . They all whine about monoblocks , but you could tell the Concentics
by the missfire on transition . :D Glass Pack Straight Thru mufflers have been known to improve matters . The Long Ones , preferably . :D :D



Cheers Matt

Thanks for that. You are correct the bike with the problems is a 70 . The red bike is a 68 but I have not had the dating certificate back but it says 68 on the Virginia title.

Again I agree originality is for display one look at my commandos and you will know what I mean.
And he sayeth The meek shall inherit the earth,
But it's roads belong to commando 750's
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Re: Last train to Glasgow Central..........Last Traaaain....

Postby auldblue » Sat Oct 22, 2016 1:18 pm

Image

Image

A couple of photos of the inside of the tank , not the best but you can see the river of epoxy in the base along the seams. It weighs about twice as heavy as it should be.

Jg
And he sayeth The meek shall inherit the earth,
But it's roads belong to commando 750's
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Re: Last train to Glasgow Central..........Last Traaaain....

Postby auldblue » Mon Oct 24, 2016 3:06 pm

Did a hour or so on the 120 tonight to try and get it sorted for an MOT retest. Pulled the gbox cover to see the kickstart Spring , turns out it's the pin that holds the spring is bent don't know if that's a common thing or not.
Swopped the bars over and was going to fit the new horn switch but there was no self tappers , took some photos but for some reason they wouldn't upload .
And he sayeth The meek shall inherit the earth,
But it's roads belong to commando 750's
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Re: Last train to Glasgow Central..........Last Traaaain....

Postby Triton Thrasher » Mon Oct 24, 2016 10:36 pm

Yes I've seen that pin bent.
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Re: Last train to Glasgow Central..........Last Traaaain....

Postby Fast Eddie » Tue Oct 25, 2016 12:36 am

I've seen those pins take the alloy from the casing with them too. I've had to make oversized ones before a d drill out the case accordingly. I would suggest careful removal of the pin and inspection of the case / hole.
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Re: Last train to Glasgow Central..........Last Traaaain....

Postby auldblue » Tue Oct 25, 2016 3:13 pm

Triton Thrasher wrote:Yes I've seen that pin bent.


Fast Eddie wrote:I've seen those pins take the alloy from the casing with them too. I've had to make oversized ones before a d drill out the case accordingly. I would suggest careful removal of the pin and inspection of the case / hole.


Cheers for that. I did take it out with some heat ,don't know if it needed it or not but you were right Nigel. The hole in the cover is damaged. I've ordered a new pin but, I recon it will need doctored.

Pulled the T/S carb off the body seemed warped as the slide was sticking open. Got another 930 of a commando so will swap the bodies over but it needs a good clean. I think I'll get a hydrosonic cleaners and see if there as good as they're cracked up to be.

Photo bucket still not playing ball. Going to sort the wires tomorrow. Still doing a bit of reading homework.

Jg
And he sayeth The meek shall inherit the earth,
But it's roads belong to commando 750's
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Re: Last train to Glasgow Central..........Last Traaaain....

Postby auldblue » Wed Oct 26, 2016 3:25 pm

Image


Image

I know nothing about bonnevilles but after a bit of reading this bike has TR6 C yokes , getting parts tomorrow. '

Arthur Gaggs phoned to say my clock was ready, normally he only talked about golf , but today he asked if the clock was on the bike cos it was absolutely full of rust. Well worth the 115 to get it like new.

Jg
And he sayeth The meek shall inherit the earth,
But it's roads belong to commando 750's
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Re: Last train to Glasgow Central..........Last Traaaain....

Postby Matt Spencer » Wed Oct 26, 2016 9:09 pm

Some ( a lot ) of those Have the Pear Cheek / flank , crank . Which is lighter . Or has the Same Inetia AT HIGHER REVS .

:D :D :D

This is knactually the ' Thruxton ' Item .

:D :D :D

W&S Valve Springs ( NORVIL ) are Actuall Jo Mo Co , progresive rate , centerless ground , Aircraft Quality . Shim @ .040 off @ full lift .

:lol: :lol: :lol:

The Proper ECCENTRIC Concentric Velocity Stacks Prevent the Ram Air pressurising the Float Bowls , leaning off the mixture , and melting bits .

If you have a Seven Mile Straight handy . :wink: :shock: :lol:

The NON Q.D. Axle is somewhat STRONGER . With big nuts you can tighten it up real hard. Too.
The 68 Has Durability Upratings from the 67 . The 69 is a ponced up 68 with a extra stripe & cheaper badges . :P :P

To Corner use your knees then throttle . Keep the elbows tucked in . :P :P

Keep it Below 90 in third . At First .
Cut Down real pre unit Big Bore Pipes about 28 in , with wassel Long Steel Meagas . . . , Er . MUFFLERS ! . With the perforated Baffles ,
Will have it Come on The Pipes , just past there . With a bit of Head Work . :D :shock:

Being Lighter and Stiffer than a Pre Unit , it should then see off a Z1 .
Be intrested how many holes those made in the Hedges in the I.o.M. , if they ever got there . :?

in short , the 68s the one Hele got at . To the detriment of Olde women .

Searching JoMoCo & Triumph service bullitens can help , as do 1 5/32 monoblocks or 1 3/16 concentrics . as per T120TT ,
if you must spend money .
The Japanese response to ' styling ' , was to add more .
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Re: Last train to Glasgow Central..........Last Traaaain....

Postby auldblue » Thu Oct 27, 2016 4:21 pm

Cheers for that Matt, but I'm still at the "trying to get things to fit" stage . Tried to fit the new tank but the threads seem to be very tight. I'll speak to the supplier and maybe run a tap up the threads , as its an original tank I don't want to bugger the threads. The studs have flat ends are they U.N.C ?

Fixed the carbs the new (old body that came of a mando)body seems fine. Still waiting for bits to finish the electrics and fix the kickstart Spring. Photobucket has died.

Should be ready for the retest at the beggining of the week.

Jg

https://m.youtube.com/watch?v=Zv4qYcbB0zI
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Re: Last train to Glasgow Central..........Last Traaaain....

Postby L.A.B. » Fri Oct 28, 2016 2:06 am

auldblue wrote:Tried to fit the new tank but the threads seem to be very tight.

The studs have flat ends are they U.N.C ?


How many TPI? I would expect the studs to be UNF, rather than UNC if it's a ('68?) - '69 - '70 tank.

http://www.nsamotorcycles.co.uk/21-1883 ... 6351-p.asp

So, what 'year' is the replacement tank supposed to be? If the tank is earlier then I think the thread would be CEI/BSC.
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Re: Last train to Glasgow Central..........Last Traaaain....

Postby auldblue » Fri Oct 28, 2016 12:57 pm

L.A.B. wrote:
auldblue wrote:Tried to fit the new tank but the threads seem to be very tight.

The studs have flat ends are they U.N.C ?


How many TPI? I would expect the studs to be UNF, rather than UNC if it's a ('68?) - '69 - '70 tank.

http://www.nsamotorcycles.co.uk/21-1883 ... 6351-p.asp

So, what 'year' is the replacement tank supposed to be? If the tank is earlier then I think the thread would be CEI/BSC.


Cheers for that Les. Tried 5/16 cycle last night no joy as for tpi could be 24 or 26 couldn't find my thread pitch gauge. Spoke to the supplier ,who is reputable and he said could be the plating. So gave the studs a good go with the wire brush on the bench grinder and they fitted with a good bit of lubing . I had the same thing with base nuts from Mick Hemmings when I did the top end of auldblue (so called because it was burning that much oil you couldn't see the traffic behind you) he ran a tap up them and they fitted easy.

When I put the dip switch on its still trying to power up both bulb filaments but the horn works now and so does the pilot bulb. And there is no kill button but it shows one on the manual. Am I short of a decent earth?

Jg
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Re: Last train to Glasgow Central..........Last Traaaain....

Postby L.A.B. » Fri Oct 28, 2016 1:39 pm

auldblue wrote:When I put the dip switch on its still trying to power up both bulb filaments


Not really enough information there to identify exactly where the fault might be.

auldblue wrote: And there is no kill button but it shows one on the manual.


I wouldn't have expected there to be a kill switch/button on a normal coil ignition (as opposed to a mag. or ET model) of that period so which particular version "manual" is it that are you using?


auldblue wrote: Am I short of a decent earth?


I don't know, but Triumphs of that period don't always have proper 'return' wiring so tend to make more use of the 'frame' as the earth/return.
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Re: Last train to Glasgow Central..........Last Traaaain....

Postby auldblue » Fri Oct 28, 2016 2:43 pm

Cheers les.
Dip switch power up.

Temporarily misplaced my multimeter.

Kill switch.

Triumph workshop manual...for unit construction 650cc twins inc t120.

The kill switch is for coil ignition machines "both appear identical externally but the internals are different".
It appears to be placed on the bars to the left of the brake perch.

Earth wires .

There are two earth wire at the yokes just hanging one is for the zenor diode . I'll see if the can go on the bottom yoke and see. If it improves things

Jg
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Re: Last train to Glasgow Central..........Last Traaaain....

Postby L.A.B. » Fri Oct 28, 2016 3:09 pm

auldblue wrote:Triumph workshop manual...for unit construction 650cc twins inc t120.


That narrows it down to about half a dozen different editions of factory "650 twin" manuals from around that period, so, which issue? Page? Drawing?




auldblue wrote: The kill switch is for coil ignition machines "both appear identical externally but the internals are different".
It appears to be placed on the bars to the left of the brake perch.


It's a 1970 model I believe, and according to the '70 riders manual the kill button was for "TR6C only" a competition model with, I think, ET ignition (will check).

Edit: By 1970, the TR6C had provision for conversion to 'capacitor ignition', rather than the ET system as used on the earlier comp. models.



auldblue wrote: Earth wires .
There are two earth wire at the yokes just hanging one is for the zenor diode .


Both wires should probably be joined together at the Zener heatsink ring terminal.
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