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Post by vtchuck on Oct 12, 2014 18:27:52 GMT
As I start to work on my mid-70's Aerospace Pro, I thought it would be helpful to me
and to others if there was a single spot where threads, dimensions etc were listed.
Other models might have different specs.
Here’s what I have so far:
Seatpost: 26.8 mm
Headset: English 1” x 24 TPI
Headset bearing: 5/32"
Bottom Bracket Sealed bearings: 6003 2RS / 17 x 35 x 10mm
Bottom Bracket Shell Width: 68 mm
Spindle Bolt head size: 14 mm
Spindle bolt size & threads: 5/16" x 22 TPI or 5/16" x 26 TPI or M8 x 1.0
Spindle length: 122 mm
Spindle type: ISO Tapered
Hub bearing:Rear: 6000-2RS / 10 x 26 x 8 mm, Front: 629 2RS / 9 x 26 x 8mm
Front Hub axle locknut to locknut / front fork dropouts inside width: 100 mm
Rear Hub axle locknut to locknut/ Rear dropouts inside width: 126 mm
Rear gear hanger threads: 10 x 1 mm
Pedal Threads: 9/16” X 20 TPI
Pedal Flats: 15 mm
Crankset Ring compatibility (Viscount Port Hole): TA Criterium Pro, Stonglight 49D
Crankarm length: 170 mm
Crankarm removal tool: Standard Shimano, Campy, Sugino
Steerer Tube: 1” / 22.2 mm
Handlebar / stem bar clamp diameter: 25.4 mm
Handlebar stem Allen wrench size: 5/16" (6.5 mm?)
Viscount CP brakes Range of Pad Adjustment: 50-70 mm
Mud guard / Fender bolt: ?
There’s a start. Anyone with additions / corrections?
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Post by velocipete on Oct 12, 2014 19:19:32 GMT
Now that's a good idea.
No criticism,but bottom bracket shell width 68mm.
rear dropout width should be the over lock nut dimension,ie inside the
rear dropouts,rear gear hanger threads are standard m10 x 1mm,the bottom
bracket bearings are standard industrial bearings,see cusqueno's threads
for details.The headset bearings I used were 5/32" worked fine.The bottom
bracket spindle bolts are an imperial size,see Stella's post on this.Can't
remember what she quoted but it's imperial.The stem bolt is also imperial,
at least on my pro,possibly 5/16,but if 6.5 mm works,so what?
My pro also has a Maxy chainset fitted as original equipment so the ring sizes
are Shimano.
Hope this helps.
Cheers,
Pete.
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Jem
Viscount
?
Posts: 3,380 
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Post by Jem on Oct 13, 2014 7:14:50 GMT
What a great idea. Thanks for your efforts on this, if anyone wants to chip in and add to it then I will stick it/pin it to the top of the page and then everyone will find it with ease.
I'm guessing that the majority of casual browsers on this forum (those that don't join up) - come along at first when they buy a Viscount and want to find out more about them. After that the next thing is how to fix it up etc. So this is high on the list of essentials I think.
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Post by vtchuck on Oct 23, 2014 19:25:23 GMT
I'm going to do a "bump" on this as we're only short 3 or 4 items to get it completed.
Come on, L/V gurus.... let's finish this up.
BTW, I think the stem / handlebar is 22.2 mm, but would like confirmation
Cheers
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Post by velocipete on Oct 23, 2014 20:04:43 GMT
I'll check for you in the morning when it's light enough to find my vernier calipers,
never mind my bike!
Cheers,
Pete.
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Jem
Viscount
?
Posts: 3,380
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Post by Jem on Oct 23, 2014 21:02:42 GMT
I'm going to do a "bump" on this as we're only short 3 or 4 items to get it completed. Come on, L/V gurus.... let's finish this up. BTW, I think the stem / handlebar is 22.2 mm, but would like confirmation Cheers I put 25.4mm handlebars into my sons Aerospace Pro. Real squeeze but they went in. |
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Post by sprockit on Oct 23, 2014 21:24:27 GMT
Wasn't there an English Statute which dictated that the bulge in the centre of bicycle handlebars had to have an outside diameter of 1 inch (25.4 mm)?
I think it's now been repealed - or has become un-enforceable due to the vast array of necessarily stronger stems and bars on off-road bikes.
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Post by velocipete on Oct 24, 2014 9:42:14 GMT
Just checked,the handlebar is just a tad under 25.4mm at the bulge.The stem opening is 25.4mm.
The stem diameter where it enters the fork is 22.2mm.
The handlebar minimum diameter may have been in an old version of BS6102/3.Interestingly
BMX handlebars were only 22.2mm if I remember correctly. As this style of bike originated
in the US, I'm not at all surprised they are different,as is the bottom bracket.
Cheers,
Pete.
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Post by dracco on Oct 27, 2014 18:05:57 GMT
Here's another question about dimensions. Does anyone know what thread is in the lugs on the dropouts to which mudgard stays are screwed?
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Post by velocipete on Oct 27, 2014 18:55:44 GMT
Now that's a damn good question!Early frames may be a BA thread,cusqueno will know.After 1971,when metrication was supposed to
arrive in the UK,they should have converted to,at a guess,the same as bottle mounts,4mm?
If they are BA,you can run a metric tap through and use the relevant bolt.
The joys of mixed units,ask NASA! Their failure to get to grips with units was VERY expensive.
Cheers,
Pete.
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Jem
Viscount
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Posts: 3,380
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Post by Jem on Oct 27, 2014 19:29:20 GMT
Here's another question about dimensions. Does anyone know what thread is in the lugs on the dropouts to which mudgard stays are screwed? I should know this as I went down to B&Q earlier this year and bought a packet of nuts & bolts and a pack of washers for this purpose (and my racks) I will look in my bits and pieces box later |
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Post by Stella on Oct 27, 2014 20:02:22 GMT
BB bearings: 6003 2RS (17 x 35 x 10mm)
Hub bearings 629 2RS (9 x 26 x 8mm) just not sure if it's front or rear, I believe it's front, though.
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Post by vtchuck on Oct 27, 2014 20:10:03 GMT
Thanks Stella:
Welcome back. So the front and rear hub bearings are different? Am I correct on the rear size?
And might you know the spindle bolt dimensions?
Cheers
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Post by Stella on Oct 27, 2014 20:23:54 GMT
Yes, the front and rear hub bearing diametres are different. I had to learn the hard way. So, yes, I think the rear is 6000 and the front is 629.
Spindle bolt dimension? I know one is 5/16 and the other one is M8 x 1.0. All of them are to be loosened/tightened with a normal 14mm socket spanner.
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Post by vtchuck on Oct 27, 2014 20:58:19 GMT
Spindle bolt dimension? I know one is 5/16 and the other one is M8 x 1.0. All of them are to be loosened/tightened with a normal 14mm socket spanner. Thanks.... Mine (76 AS Pro)is not metric or at least standard Campy bolts don't fit.... seems to be SAE or Imperial ? |
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Post by vtchuck on Oct 28, 2014 21:39:10 GMT
I have discovered that Lambert / Viscount used both 5/16" x 22 TPI x 3/4" and 5/16" x 26" x 3/4" spindle bolts.
Found some 22 TPI in stainless steel from an online motorcycle dealer and I'll report on whether they fit my ASP spindle.
I wanted extras because of what I learned using after-market titanium bolts on a Campy spindle. The procedure was to install the
cranks using the stock steel bolts... remove and replace with the titanium after the cranks were seated, to prevent stripping or breaking the titanium
After reading stories about Viscount bolts being fragile and breaking during crank installation, I thought this might be a wise course of action for my Viscount.
UPDATE: BSF 5/16" -22 x3/4" are the correct fit for my ASP.
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Post by Stella on Nov 2, 2014 10:44:28 GMT
I got some high tensile bolts from Clerkenwell screws clerkenwellscrews.com/ They specialise in screws and bolts and have anything. It's here in London. Will have to pay them a visit next week as I need some screws for top tube cable guides I'd bought (NOS Shimano), but they came without screws. No, wait, I bought some more last time, so here's hoping they may fit. :-) If not, I'll let you guys know and I'll be happy to get you some nuts and bolts and send them over. |
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Post by vtchuck on Nov 2, 2014 22:45:02 GMT
Now that's a damn good question!Early frames may be a BA thread,cusqueno will know.After 1971,when metrication was supposed to arrive in the UK,they should have converted to,at a guess,the same as bottle mounts,4mm? If they are BA,you can run a metric tap through and use the relevant bolt. The joys of mixed units,ask NASA! Their failure to get to grips with units was VERY expensive. Cheers, Pete. My ASP has threaded rear drop-outs and unthreaded on the 3G death forks. Rear seems smaller hole than the front. Bottle mount bolts did not fit my rear drop-outs. Not a problem for me as I don't use fenders. |
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Post by dracco on Nov 3, 2014 11:02:30 GMT
I can now answer my own question. The thread in the dropout lugs of my 1983ish, possible Corsair Wayfarer is a standard M5 thread - as is the thread in the bottle-mounts.
Of course, the shortest M5 bolts I could easily buy from my local hardware store were 25mm long, which necessitated a bit of work with the hacksaw......
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Post by cusqueno on Nov 3, 2014 15:49:48 GMT
Here's another question about dimensions. Does anyone know what thread is in the lugs on the dropouts to which mudgard stays are screwed? On earlier frames I think 2BA threads were used. I have just needed to clear out the threads on my (probably late seventies) Aerospace filet brazed frame, and that was the tap that fitted - both on the rear drop-outs and on the original steel forks. |
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Post by busaste on Sept 21, 2015 16:24:48 GMT
I got some high tensile bolts from Clerkenwell screws clerkenwellscrews.com/ They specialise in screws and bolts and have anything. It's here in London. Will have to pay them a visit next week as I need some screws for top tube cable guides I'd bought (NOS Shimano), but they came without screws. No, wait, I bought some more last time, so here's hoping they may fit. :-) If not, I'll let you guys know and I'll be happy to get you some nuts and bolts and send them over. High tensile replacements = good idea! Those early Lambert chrome plated 5/16 bolts are made of monkey metal - after one use they are usually shot! I've sheared off far too many of those original Lambert bolts and spent unhappy times drilling them out. You have been warned! Cheers Steve |
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Post by 54roadie on Oct 31, 2015 0:22:11 GMT
Can anyone help with this? Have I not seen photos of aluminum forks with fenders / mudguards fitted? My forks have a very small hole, the standard bolts don't even start in the threads. Are these threaded (they don't look it) and if so what size?
If they are not threaded, would threading the hole turn my Death Fork into a Real Death Fork? I am seriously not interested in having a dropout fail on a rainy, dark winter ride, on the heavily trafficked roads I use to get home.
Thank you all in advance,
Frank
EDIT: took a death fork to the hardware store, discovered that M4 bolts just fit through the apparently non-threaded holes. Picked up bolts, washers, matching nylock nuts, and fitted it up this evening. Everything looks great and feels tight. I'll ride it in the morning, just a bit, and see if it's all still tight when I get home. Best job I've ever done of fitting aftermarket fenders to a bike. (mudguards, to most of you.) Nothing special - SKS plastic/mylar, but for some reason they fit much more neatly on the Viscount than on the Gitane Tour de France where they were formerly mounted. It even looks as if I'll still have next to no shoe / fender interference, which is very cool.
Hmmm. The TdF has 700c wheels, and significant interference, with 600mm front center measurement. The Viscount has 27" wheels, much larger tires, and minimal interference. 610 mm front center. (Actually 609.6mm, as it measures 24" dead on.) I wonder if this is true across frame sizes? Anyone care to measure?
Frank
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Post by djidzi on Nov 20, 2015 22:59:10 GMT
Circa 1973 Lambert Aerospace Bottom Bracket Shell Dimensions: 35 X 65mm
According my measurements, the BB shell dimensions of my Lambert are 35mm internal diameter X 65mm wide. I am saddened to find, (of course after mitering down the protruding tubes on the inside of the BB shell) that the 34X68mm threadless BB that I purchased from Velo Orange will not work; It is too loose about the diameter of the shell and the BB flange will not tighten down against the edges of the shell on either side. It is too wide for the task.
Can anyone else confirm that that the Lambert and Viscount Aerospace bikes have different BB shell dimensions? I have read postings of people having success in resolving the bottom bracket problem with the Velo Orange threadless BB on a Viscount, but my experience leads me to believe that the shell dimensions of the Lambert may in fact be different.
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Post by busaste on Nov 21, 2015 18:44:03 GMT
Circa 1973 Lambert Aerospace Bottom Bracket Shell Dimensions: 35 X 65mm According my measurements, the BB shell dimensions of my Lambert are 35mm internal diameter X 65mm wide. I am saddened to find, (of course after mitering down the protruding tubes on the inside of the BB shell) that the 34X68mm threadless BB that I purchased from Velo Orange will not work; It is too loose about the diameter of the shell and the BB flange will not tighten down against the edges of the shell on either side. It is too wide for the task. Can anyone else confirm that that the Lambert and Viscount Aerospace bikes have different BB shell dimensions? I have read postings of people having success in resolving the bottom bracket problem with the Velo Orange threadless BB on a Viscount, but my experience leads me to believe that the shell dimensions of the Lambert may in fact be different. Yes, some Lambert frames have different BB shells. This was for no other reason than problems with parts availability. This issue plagued Lambert and Viscount right from the start and resulted in a real mish mass of bikes being put together over the years. What wont of helped matters is the Raleigh TI group which at the time would not supply any tube or lugs to Lambert. Lambert really had them worried! Regarding the BB shell I've seen threaded lugged ones, threadless lugless ones and threaded lugless ones on both Lambert and Viscounts. This is the first time I've heard of a threadless 65mm one though. They are ususally 68mm which suggests a bit of ropey tube cutting there at the factory! Is your BB shell threadless? If so, the internal dimension should be 35mm or thereabouts. I've used a YST Threadless 68 mm Sealed Bearing Bottom Bracket in shells with an internal diameter of 35mm with good results. The chamfer on the sleeve which clamps against the shell is a good size. Hopefully it can 'bite' against your frame which appears to have had a bit of its meat taken out from this critical area. If that does not work, try an ex racer come frame builder called Doug Pinkerton. He does a mod which converts the BB shell to take a threaded English BB. His contact details are: DOUG PINKERTON, REDDITCH, WORCSTERSHIRE AREA 07778 429313 Regards Steve |
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Post by cosmo on Apr 17, 2018 9:11:15 GMT
Hi
Wondering if this is the correct thread, but cannot find one on sealed wheel bearings, so here we go. I have an Aerospace Sport which I bought in 1974/75 time. Doing a rebuild. Problem has started by taking my Brimalux 27" rear wheel to LBS to replace bearings. A mistake as it has been returned with scrunching feel to bearings ie not running smoothly. They hoyed the old bearings into skip which is now dumped. Front bearings are 6000-628RS by FAG which are available on the internet as 628-2RS. Would these be same for the rear wheel and if so do the 628-2RS fit the job. The LBS have inserted 6000-RS and have damaged the treads in doing so. A truly dreadful job with the signature 'ride it hard for a month and you might find it settles down!'. Any advice would be welcome.
Bestest
Cosmo
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Post by blackwizard on Apr 18, 2018 6:32:07 GMT
I just checked pictures from my rebuild of the rear Lambert wheel and the bearing is 6000-629RS on mine. I cannot see he code on he front one but seem to remember they were all the same when I took them off.
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Post by franco on Oct 14, 2020 15:19:38 GMT
Does anyone know off hand the BCD measurement for the inner chain ring on the port hole crank?
I saw the first post has compatibility options but not the BCD measurements.
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Post by brianbutler on Oct 14, 2020 20:17:05 GMT
Does anyone know off hand the BCD measurement for the inner chain ring on the port hole crank? I saw the first post has compatibility options but not the BCD measurements. BCD = 80mm. It is a TA Cyclotouriste crankset. |
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Post by franco on Oct 15, 2020 18:13:33 GMT
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Post by brianbutler on Oct 15, 2020 20:10:14 GMT
Yes that will fit. Are you making a compact double, or a triple? If it's a triple there are more considerations.
Brian
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