|
|
Jan 17, 2013 14:10:18 GMT
|
The fitting on the back of the cub frame for the swing arm uses a 22.1mm hardened bush, I needed to knock the bush out and sleeve the frame boss down to 14mm to suit the sinnis subframe and swingarm, I successfully turned the spacer on my lathe, warmed the boss with a blow torch and then pressed the spacer in using a threaded bar and some hefty washers, it was a reluctant fit but finally went in and wont be going anywhere soon. With the spacer in I could see that further modification is required to the sub frame tube to make them line up with the fitting on the triumph frame, not a million miles out though You'd think that an SR125 tank would be pretty small but I hadn't really allowed for the size of the tiger cub, it really is a small bike. The SR tank whilst I like the shape, it is far too long for the top tube. I wanted to build the frame up a bit more to see how the frame sat with the suspension fitted, I'm going to try to get a little more lift and then maybe chop the headstock off on the bottom mount and steepen the angle - see what I can achieve with rear ride height first. Even at this stage I was a bit disappointed with the weight of the frame, the forks have got to be the heaviest forks I've even known, they must be 20kg for the pair, I think the stanchions may be made be made from solid bar I've got an earlier cub standard oil tank and it fits in the frame just perfectly, the only problem being that I don't have the matching panel from the other side and it seems like such a thing never existed? I'm tempted to make a mould and produce one in fibreglass
|
|
|
|
|
jonw
Part of things
Can open a Mouse with a File
Posts: 768
|
|
Jan 17, 2013 15:39:26 GMT
|
Great work. Is an interesting build
The matching panel to the oil tank was the battery box on the earlier cubs.
|
|
Suzuki SV650R The good Triumph T20 The Bad BMW G650GS The Ugly Matchless G12CSR The Smokey Toyota Hybrid One pint or Two?
Ingredients of this post Spam Drunken Rambling of author Bad spelling Drunken ramblings of inner voices Occasional pointless comments Vile beef trimming they won't even use in stock cubes
|
|
|
|
Jan 17, 2013 18:38:13 GMT
|
Yamaha TY50 had a nice little slim line tank - they were pretty short, TY80 is smaller but likely to be more expensive
|
|
|
|
|
|
Jan 17, 2013 21:32:23 GMT
|
Yeah good shout on the tank, hadn't thought about 50's, plenty traillies had rounded small tanks, I had a DT50M project a while ago, that was probably the same as the TY? Been out there earlier tonight giving it death with the grinder, removing odd brackets from the sinnis frame and cleanng up the remains, chopping a hefty bracket off the bottom that was in 6mm thick plate and adding some clearance to get the rear ride height up. Then I slotted those top frame rails in order to bring them in line with he triumph mount. Gonna go back out and carry on in a minute...no more grinder tonight, it has an 8pm curfew
|
|
|
|
|
|
Jan 18, 2013 23:45:11 GMT
|
Tonights work... Chopped the hefty engine mount off the sinnis subframe, narrowed and shortened it. Then welded it back on to clamp to the lower boss on the main Triumph frame loop, braced it up with a couple of trianguler sections, finally welding it up solidly, needs a tidy up but it's good and strong. Just the top mount and it'll be ready to fit the wheels on to really see how it sits - then the obligatory sit on making vrroom vrrroooooom noises - or rather dug..........dug.........dug.......dug,dug,dug noises.
|
|
|
|
|
|
Jan 20, 2013 17:46:52 GMT
|
Turned a bush to fit in the top frame mount, tapped it out to M8 and then welded into the worn oval bush on the triumph frame. Welded up the top brackets on the sinnis subframe and bolted the two together. With all the mounts in place for the subframe sorted I could finally bolt up the frame properly and get it on some wheels. Swingarm seems a bit long not sure if the whole 'works' or not? need to get a muddy and side panels on to see how it looks. Steering lock is tiny due to the forks hitting the tank, some percussive adjustment needed there....
|
|
|
|
|
|
Jan 20, 2013 20:38:52 GMT
|
That looks a lot better than I was expecting, I would say if you can get steering lock then stay with that tank
|
|
|
|
|
|
Jan 22, 2013 13:16:05 GMT
|
Crikey you must have been expecting a real abortion! Playing around last night, I moved the tank up and backward off the original mounts, with the tank higher and pulled back it looks better, gives me full lock AND allows for some bits to mount up under the tank like the ignition coil and possibly the battery eliminator
|
|
|
|
|
|
Jan 24, 2013 12:14:26 GMT
|
Not updated for a few days but things have been happening, though I did have the nuisance of paid work getting in the way. I've started to build the bike up in a pre-paint fashion, fitting brackets and making bits to suit as I go. The other night my task was to get the oil tank fitted, the original - poorly welded - brackets on the oil tank were just flat pieces of steel, pretty ugly really. I cut the brackets off and re-thought the brackets to pick up on existing mounts on the triumph frame, the lathe came in handy as I turned myself some proper mounts rather than cobble something together. As standard the tank is solidly mounted and so it remains - not sure how long it'll last before it cracks at the mounts though... Las nioghts job was fitting the carb, that required some fiddling and footling about, the original AMAL concentric was curse word when new and 44 years later it's even worse, I've got this pair of huge round slide AMALs with bellmouths attached that are pretty cool and have had the cub running on one in the past, but it is a bit big to fit tidily in the space available. So back to the pile of bits left over from the donor, and what I thought would be some ropey chinese copy was actually a pukka mikuni VM22 (albeit with a wrecked and seized pilot mixture screw) Some hacksawing filing and drilling and the carb bolts up to the triumph manifold, it'll need a bit of ally welding which I cant do, and it'll need to be port matched to get the flow right - but it should do for now...unless I go with the monster AMAL I slapped on the right hand switchgear and throttle housing, sized the ignition coil up for fitting out of sight (tonights job) and a few other bits. Also played about with the rear mudguard so lets have your comments..... hi-rise or low-boy. I thought I knew how I wanted it, now I'm not so sure! And as an aside, despite being drained years ago and then sat in the corner of the garage without disgracing itself - I bring the sodding thing out into the light and it's left a patch of oil on the garage floor, HOW? I've not even put any oil in!
|
|
|
|
|
|
Jan 24, 2013 13:30:53 GMT
|
Low boy for sure.
Keep up the good work, must be cold out there but keeping going is good.
John
|
|
|
|
|
dungbug
Posted a lot
'Ooligan!
Posts: 2,852
|
|
Jan 24, 2013 15:37:35 GMT
|
I'd say lower on the rear mudguard as well.
|
|
Past: 13 VW Beetles from 1967 - 1974 Bay Window Campers (1973 & 1974) Mini's (1992 Cooper lookalike & 1984 '25 Anniversary) MK2 Polo Coupe S (1984 & 1986) MK2 Polo Breadvan (1981 & 1984) MK4 Escort (1989) MK2 Granada Based Hearse (seriously) Fiat Uno 60S (1986) Punto 60S (1998) Cinq (1997) 1998 Yamaha YZF600R Thundercat 2003 Ford KA
Current: 2004 Ford Focus (barely alive)
|
|
|
|
Jan 24, 2013 17:35:18 GMT
|
Are you going for a low mount front guard trials style to tie the front end together a bit tighter? Personally I would go for a high rear guard but I can't quite think how it would look with a seat/ sidepanels on it, I don't think the picture of the high mounted mudguard is doing it any favours as it doesn't follow (to my mind anyway) the curve of the rear wheel, it just lookd wrong at the moment..... Good work though, you can order all the parts for a Mikuni carb direct from a place in Nottingham to replace the stuffed idle/ mixture screws.
|
|
|
|
|
|
Jan 26, 2013 19:38:22 GMT
|
You're right about the high rise photo, it does look wrong, but the front guard will be hi-rise - no mounts for a low setup. I'm a dirt bike lover at heart, so I think I know which way it'll be going Cheers for the carb info - may well go with the grasstrack amal though because it looks and sounds ace. The mikuni pump I know works for the apache 125 so it shuldn't be a mile out to just run up the engine, speaking of which.... It's been ten years at least, she's alive again! Smokes a lot, vibrated two things off during that clip, pilot is far too lean - but at least it runs. ;D
|
|
|
|
dungbug
Posted a lot
'Ooligan!
Posts: 2,852
|
|
|
Runs............So nothing seized ;D
|
|
Past: 13 VW Beetles from 1967 - 1974 Bay Window Campers (1973 & 1974) Mini's (1992 Cooper lookalike & 1984 '25 Anniversary) MK2 Polo Coupe S (1984 & 1986) MK2 Polo Breadvan (1981 & 1984) MK4 Escort (1989) MK2 Granada Based Hearse (seriously) Fiat Uno 60S (1986) Punto 60S (1998) Cinq (1997) 1998 Yamaha YZF600R Thundercat 2003 Ford KA
Current: 2004 Ford Focus (barely alive)
|
|
|
|
Jan 27, 2013 22:27:58 GMT
|
No......not yet.
|
|
|
|
dungbug
Posted a lot
'Ooligan!
Posts: 2,852
|
|
Jan 28, 2013 19:55:20 GMT
|
|
|
Past: 13 VW Beetles from 1967 - 1974 Bay Window Campers (1973 & 1974) Mini's (1992 Cooper lookalike & 1984 '25 Anniversary) MK2 Polo Coupe S (1984 & 1986) MK2 Polo Breadvan (1981 & 1984) MK4 Escort (1989) MK2 Granada Based Hearse (seriously) Fiat Uno 60S (1986) Punto 60S (1998) Cinq (1997) 1998 Yamaha YZF600R Thundercat 2003 Ford KA
Current: 2004 Ford Focus (barely alive)
|
|
jonw
Part of things
Can open a Mouse with a File
Posts: 768
|
|
|
Good stuff. Amal parts (and new carbs) are available from burlen fuel systems in Salisbury. They are very helpful and have an extensive parts bin and list of setups. I'd go with a 622 concentric. Have had one on mine and it does improve the go!! www.amalcarb.co.uk/Here's the concentric on mine. Edit for carb number.
|
|
Last Edit: Feb 6, 2013 13:07:43 GMT by jonw
Suzuki SV650R The good Triumph T20 The Bad BMW G650GS The Ugly Matchless G12CSR The Smokey Toyota Hybrid One pint or Two?
Ingredients of this post Spam Drunken Rambling of author Bad spelling Drunken ramblings of inner voices Occasional pointless comments Vile beef trimming they won't even use in stock cubes
|
|
|
|
|
Some lower mounts for the mudguard were made from stainless and welded on (badly) I bent up some 20mm tube at work and welded it onto the the end of the seat rails, then slotted the rails to allow a curve to be formed. Allowing me to fit up the rear guard, sorry to those that suggested low fitment And the 22m mikuni as been relegated to the scrap bin and replaced with a much larger AMAL. Note that the loom is now all there and just needs wrapping up tidy
|
|
|
|
dungbug
Posted a lot
'Ooligan!
Posts: 2,852
|
|
|
She'll be back on the road in no time.
|
|
Past: 13 VW Beetles from 1967 - 1974 Bay Window Campers (1973 & 1974) Mini's (1992 Cooper lookalike & 1984 '25 Anniversary) MK2 Polo Coupe S (1984 & 1986) MK2 Polo Breadvan (1981 & 1984) MK4 Escort (1989) MK2 Granada Based Hearse (seriously) Fiat Uno 60S (1986) Punto 60S (1998) Cinq (1997) 1998 Yamaha YZF600R Thundercat 2003 Ford KA
Current: 2004 Ford Focus (barely alive)
|
|
|
|
Feb 11, 2013 20:56:41 GMT
|
Hope you are keeping the minimal look and going for a day time use only MOT (no lights) Don't know if you have any instruments from the donor bike, but you can use a mountain bike speedo mounted low down on then engine to keep the clean look.
|
|
|
|
|