|
Post by JonW on Mar 29, 2023 23:16:17 GMT 1
We need a picture of what you are working on Mason. Without that its really hard to say 100% what you have there.
But, it sounds like early ypvs calipers... which means early ypvs forks. ie all 83/4.
As has been said above, you CANNOT simply bolt the triumph calipers to those forks and from what youve said before about originality I dont think you really want to either. The early ypvs forks use calipers with a 40mm bolt spacing, the 85-onwards ypvs and the Triumph calipers are 83mm... thats why we use them on the later bikes.
FYI We really need pics, certainly before we give advice that will cost you money, ie sending you off looking for different calipers/forks... caliper and fork leg pics at the least.
Also brake master pics I guess if yours is not coffin shaped?
|
|
|
Post by masonmart on Mar 30, 2023 7:10:38 GMT 1
MC by Martin Mason, on Flickr calliper by Martin Mason, on Flickr Thanks guys, the calliper bolts are 40mm spacing. the MC is rectangular not coffin shaped, single pin. Are there any chances of getting a front end for an F1 or F2. MM
|
|
|
Post by midlifecrisisrd on Mar 30, 2023 7:17:10 GMT 1
Those are deffo Lc2 calipers and LC/LC2 master
Steve
|
|
|
Post by JonW on Mar 30, 2023 8:23:19 GMT 1
yep im with Steve. Defo 83/84 LC2 calipers and master
If they fit your forks... well then the lowers at least are not F1, but also LC2 (or maybe LC or something else, but unlikely). We need a pic of the whole lower leg really to tell you that.
F1 forks and triple come up now and then, also worth a Wanted ad etc.
(so, im sure you got this, but... to confirm... the Triumph calipers shown will NOT fit the forks that those 40mm spaced calipers fit)
|
|
|
Post by masonmart on Mar 30, 2023 8:48:50 GMT 1
|
|
|
Post by JonW on Mar 30, 2023 8:54:40 GMT 1
Thats an LC2 fork lower, not F1.
|
|
|
Post by masonmart on Mar 30, 2023 8:59:25 GMT 1
Screwed again but these will be going on the bike.
|
|
|
Post by abar121 on Mar 30, 2023 9:02:15 GMT 1
Yup, nothing F1 about any of those.
I have F1 front calipers plus M/C stored somewhere, as I upgraded to a Fazer M/C and Triumph four pots. A brilliant upgrade, but as above, only for the later fork bottoms.
What yokes do you have? Maybe take a load of pictures of everything for us to help identify.
To be honest, sounds like the perfect base to modify and improve to your liking, rather than a 100% restoration. My F1 has been fun to mod and improve. Still at it!
Edit: Just to add that you only need the later fork bottoms, if you want to use the later F1 calipers (or triumph four pots), they will bolt onto your existing stanchions. I'd do that as it looks neater than using caliper adapters.
|
|
|
Post by masonmart on Mar 30, 2023 9:36:19 GMT 1
Thanks Abar. I have a hard day trying to separate hoses and callipers and pistons and then decide what to do. Want to sell your F1 bits and I'll see if I can get fork bottoms.
|
|
|
Post by elsiefan on Mar 30, 2023 11:45:17 GMT 1
Just one small point, I would remove your phone bill from the picture of your fork leg, it's showing your full name and address.
|
|
|
Post by stirling11 on Mar 30, 2023 16:27:29 GMT 1
If your staunchens have a narrow section between the top and bottom yoke and the handle bars are a solid one piece held in place by two U shaped clamps and not clip on's, then you have the LC2 front end
Just be aware the rear calliper on an F1 looks like a cack handed front calliper except it doesn't fit on the front no matter what you do, I know this because I tried not realising the difference, the banjo and bleed nipple are in different positions to the fronts
That said the LC2 or any other 31K model (Sumitomo) rear callipers will fit as the carrier has the same bolt pattern
I have a box full of F1 halves, happy to send you a matching set, no pistons or seals though, just cover postage
|
|
|
Post by midlifecrisisrd on Mar 30, 2023 16:46:51 GMT 1
The other point to note is that those forks are shorter
Lc2 stanchions sit flush in the top yoke, F1 protrude 30mm or so as the clip ons go on them above the yoke
Steve
|
|
|
Post by JonW on Mar 30, 2023 23:34:58 GMT 1
yep, wot they said: only the lower triple is the same between the sets really. I would find a whole F1 front end if you still want to build an original F1. Else id mod it.
Its kinda sad that someone chose to add some (bad font) Variable Damper decals to the LC2 forks and paint (powdercoat?) them black, but they will sell on no problem i would think. Does make you wonder what other parts bin horrors you will find. Put up more pics... you might get some good news? The rear caliper at least as Stirling says, we can cast our eyes over that...
|
|
|
Post by masonmart on Apr 1, 2023 17:38:01 GMT 1
yep, wot they said: only the lower triple is the same between the sets really. I would find a whole F1 front end if you still want to build an original F1. Else id mod it. Its kinda sad that someone chose to add some (bad font) Variable Damper decals to the LC2 forks and paint (powdercoat?) them black, but they will sell on no problem i would think. Does make you wonder what other parts bin horrors you will find. Put up more pics... you might get some good news? The rear caliper at least as Stirling says, we can cast our eyes over that... I have a name for people who add decals like that. But when I get the time I will remove them. I don't want to build an F1 now because that is not sensibly possible but I will build a good bike, That is all that matters.
|
|
|
Post by masonmart on Apr 2, 2023 16:00:56 GMT 1
Took my callipers to see how they coped with the rig and they lost badly. Not only did they pop out quickly but they're in great shape. I couldn't get the circlips out of the master cylinders but that is done too now. One thing I forget badly is taking pictures and it's because I'm a bad mobile person and never have it on me. possible best when they're coated now but I'm going up Tuesday. Anyway, I've put most of the subsections together and have a good idea of what's missing now. Piles of junk but a lot of stuff that will come good with hard work. Using the LC callipers has been a real saviour.
|
|
|
Post by masonmart on Apr 3, 2023 7:54:51 GMT 1
One surprise with the rear calliper is that it is 2-pot. The parts diagram that I have says single-pot.
|
|
|
Post by JonW on Apr 3, 2023 8:09:40 GMT 1
One surprise with the rear calliper is that it is 2-pot. The parts diagram that I have says single-pot. they are all 2 pots on the YPVS. no idea what parts diagram youre using, but its wrong. Does it say Sumitomo on it or not?
|
|
|
Post by masonmart on Apr 3, 2023 8:52:10 GMT 1
One surprise with the rear calliper is that it is 2-pot. The parts diagram that I have says single-pot. they are all 2 pots on the YPVS. no idea what parts diagram youre using, but its wrong. Does it say Sumitomo on it or not? My 57V parts manual fig 29 shows single piston. Could be draftsman's license but it shows 1 and the quantity in the list is 1. Having taken the pistons out (definitely 2 pistons) and given the callipers to the painter I can't just go out and have a look at the maker but I'm going up tomorrow. Far worse is that I need front and rear master cylinders now too. Somebody had tried to take out the circlips to change the pistons and broke the eyes off. anybody had and recovered from this problem?
|
|
|
Post by JonW on Apr 3, 2023 9:11:14 GMT 1
buy a new master for the front, the 3HE is sensible money or find a better used one. Both are the same as used on many yams of the era, FJ, XJ, etc etc etc
Ok, just checked the fiche... its just artists licence, eg the 51L-w0057 kit comes with two pistons and sets of seals, not 1 as pictured.
But... if your caliper says Sumitomo, its the 83/4 version... This is why i keep asking for photos... you will need different seal/piston kits
|
|
|
Post by midlifecrisisrd on Apr 3, 2023 10:33:57 GMT 1
Screenshot of the Yam parts list Only shows 1 piston but blank under quantity used Seal kit is marked as having 4 seals so deffo 2 pistons
|
|
|
Post by masonmart on Apr 3, 2023 16:20:40 GMT 1
Steve, my parts manual shows one piston on the drawing and one piston and two seals on the on the inventory, i.e., a one pot piston. It is of course a 2 piston unit. Can I assume that it s 2 x pistons and rings as shown as one set on my drawing? The two rear pistons are actually not in good shape after removal.
OK question of the day. My front master cylinder is botched. I can buy an aftermarket one new for £60 or a second hand original for say £30 and fit a kit? I'd go for the OEM one not the new one.
|
|
|
Post by midlifecrisisrd on Apr 3, 2023 17:05:59 GMT 1
This rear caliper kit looks good value www.ebay.co.uk/itm/225497646055I've used a couple the cheap new cylinders and they were fine Preference is always a decent genuine one if possible Steve
|
|
|
Post by masonmart on Apr 3, 2023 17:15:54 GMT 1
This rear caliper kit looks good value www.ebay.co.uk/itm/225497646055I've used a couple the cheap new cylinders and they were fine Preference is always a decent genuine one if possible Steve OK, there is a front MC on eBay on £19.60 but no bids. I'd pay a fair bit more but I hate these eBay competitions. Where should I stop just because I want it? The rear calliper kit looks great and I may just get a set
|
|
|
Post by stirling11 on Apr 3, 2023 17:17:43 GMT 1
You may be able to burnish the pistons up on a lathe
My brake guy does this with a small 4 tooth chuck the he tightens into the piston then uses the back (fabric) side of emery tape to burnish off the gunk that is on the outside
It brought mine back up perfect
Unless of course you have deep gouges or lots of rust
Could be worth a try
Oh and you're not the only one that forgets to take pictures
|
|
|
Post by midlifecrisisrd on Apr 3, 2023 18:22:21 GMT 1
I tend to buy Fazer 600 front master cylinders. Especially if using normal bars Correct mirror mount and an adjustable span lever Usually 30 to 50 quid for a decent one usually from a low mile bike and no real need to buy a rebuild kit www.ebay.co.uk/itm/275306195534Oh and 14mm too so perfect if you go the 4 pot route 😉 Steve Steve
|
|
|
Post by masonmart on Apr 3, 2023 19:08:39 GMT 1
Steve, I just bought a nice LC2 front MC that has been painted and kit fitted, if so that will be great.
|
|
|
Post by JonW on Apr 4, 2023 0:09:18 GMT 1
This rear caliper kit looks good value www.ebay.co.uk/itm/225497646055I've used a couple the cheap new cylinders and they were fine Preference is always a decent genuine one if possible Steve OK, there is a front MC on eBay on £19.60 but no bids. I'd pay a fair bit more but I hate these eBay competitions. Where should I stop just because I want it? The rear calliper kit looks great and I may just get a setAs above... only good value if you have the right caliper for it...
|
|
|
Post by midlifecrisisrd on Apr 4, 2023 16:07:22 GMT 1
That caliper kit is now been reduced to £25 🙂
Steve
|
|
|
Post by masonmart on Apr 4, 2023 17:48:57 GMT 1
OK, there is a front MC on eBay on £19.60 but no bids. I'd pay a fair bit more but I hate these eBay competitions. Where should I stop just because I want it? The rear calliper kit looks great and I may just get a setAs above... only good value if you have the right caliper for it... Jon The rear calliper is Sumitomo
|
|
|
Post by JonW on Apr 5, 2023 0:10:58 GMT 1
As above... only good value if you have the right caliper for it... Jon The rear calliper is Sumitomo The look at the 83/4 fiche and get the correct caliper kit
|
|