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Garage / Re: Europa TCST
« Last post by Kendo on Today at 02:29:05 PM »Turbo, what material did you use for that hose seal? I want to make some, too.
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July 1, 2023 Forum membership reaches 1,465 !!
This Community became 11 years old in April 2023.
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2
Members Cars / Re: 65/0167R
« Last post by Bainford on Today at 12:08:20 PM »Welcome to the forum, Jon. Congrats on your first Lotus, though the Westfield XI sounds pretty cool, too. While appeasing our thirst for Europa photos, a snap of the XI won't go amiss, either. Best of luck with your Lotus. Cheers 
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Garage / Re: front brake lockup
« Last post by jbcollier on Today at 09:22:15 AM »I think 7/8" rear cylinders from a Morgan +4 will work. I have a pair lying around I plan on trying to fit sometime this year.
I'm not a fan of mismatching components and then using a funky valve to try and sort it. Adjustable proportioning valves are not meant for street cars.
I'm not a fan of mismatching components and then using a funky valve to try and sort it. Adjustable proportioning valves are not meant for street cars.
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Garage / Re: What are we missing, what should I make on a VMC?
« Last post by jbcollier on Today at 09:12:44 AM » Same/similar filter used in V12 Jags, Triumph TR7s, etc.
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Garage / Re: It's not easy being green - 1971 TC
« Last post by Cheguava on Today at 07:32:42 AM »Sunny morning in Yorkshire (as usual) so sacked the garage off and cleaned up the plenum flanges for the eyeball vents and the front number "plate" letters and numbers in the sunshine. Good to be able to salvage the odd metallic item. Flanges came up well but will need a polish to shine properly, and the letters and numbers will need a coat of paint I think. Looks like these were silver.
Now got to break off and deliver my camper to eldest child who has a mould issue in her rented house. Don't these people know I'm busy?
Now got to break off and deliver my camper to eldest child who has a mould issue in her rented house. Don't these people know I'm busy?
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Garage / Re: front brake lockup
« Last post by 314159td on Monday,May 20, 2024, 11:51:20 PM »I just went and shot Wilwood an email asking basically to confirm those assumptions. Will post their response if/when it comes.
Thankfully, a larger bore master cylinder is the one thing that's easy to find among this mess of part numbers.
Thanks for the lead on ANG, I saw Rimmer got them in stock as well, but at atrocious prices.
May go the rebuild route instead, as the 14s are also a bit heavier. No sense in adding mass (and unsprung!) to something that's already overkill. My Europa has a back exit on the calipers, which I haven't seen on a Girling before. Unsure if there's a reason for that? Seems like it would make bleeding maybe easier? Haven't dug into the front suspension yet.
Just need a spare set of pistons sitting on the shelf, in case they're ever gone-gone.
Hopefully those thoughts and Willwood's response may be helpful to someone in the future regardless.
Thankfully, a larger bore master cylinder is the one thing that's easy to find among this mess of part numbers.
Thanks for the lead on ANG, I saw Rimmer got them in stock as well, but at atrocious prices.
May go the rebuild route instead, as the 14s are also a bit heavier. No sense in adding mass (and unsprung!) to something that's already overkill. My Europa has a back exit on the calipers, which I haven't seen on a Girling before. Unsure if there's a reason for that? Seems like it would make bleeding maybe easier? Haven't dug into the front suspension yet.
Just need a spare set of pistons sitting on the shelf, in case they're ever gone-gone.
Hopefully those thoughts and Willwood's response may be helpful to someone in the future regardless.
7
Garage / Re: front brake lockup
« Last post by EuropaTC on Monday,May 20, 2024, 11:44:36 PM »I can't answer the question on proportioning valves and what you say sounds logical, but rather than guessing I think I'd ask Willwood for their comments.
The braking balance as standard is generally praised in dry conditions, it's wet roads when the real problems come along where you don't get the weight transfer. The snag with deliberately allowing the rear brakes to come on first is that you could end up with the rear end locking so you'd be swapping one problem for another. And of course you'll only know that on a wet road with a panic stop....
One thing I would add is that if you increase the piston diameters is that you'll also increase pedal travel, more so if you managed to fit larger rear cylinders. Not a deal breaker, but something to consider when re-designing the system.
In the UK, ANG classic cars list the type 12 pistons, I don't know if it's an old listing and they still have stock but it might be worth an email.
https://www.angclassiccarparts.co.uk/products/triumph-5981/triumph-13001500-fwdtoledo/brakes/brake-caliper-piston-type-12-triumph-1300-68
The braking balance as standard is generally praised in dry conditions, it's wet roads when the real problems come along where you don't get the weight transfer. The snag with deliberately allowing the rear brakes to come on first is that you could end up with the rear end locking so you'd be swapping one problem for another. And of course you'll only know that on a wet road with a panic stop....
One thing I would add is that if you increase the piston diameters is that you'll also increase pedal travel, more so if you managed to fit larger rear cylinders. Not a deal breaker, but something to consider when re-designing the system.
In the UK, ANG classic cars list the type 12 pistons, I don't know if it's an old listing and they still have stock but it might be worth an email.
https://www.angclassiccarparts.co.uk/products/triumph-5981/triumph-13001500-fwdtoledo/brakes/brake-caliper-piston-type-12-triumph-1300-68
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Garage / Re: front brake lockup
« Last post by 314159td on Monday,May 20, 2024, 10:39:28 PM »Reviving a thread that's already on track of what I'm poking around.
I intend to toss type 14 calipers onto my Series 1 Europa*, which of course started life with type 12 units.
Some napkin math says that swap would be a 25% increase in piston force for the same line pressure, further increasing the potential of a front lockup.
My car would have the same line pressure on the front and rear with a single circuit MC**, so I think a larger rear cylinder would help bring things back into balance. S1 was originally 3/4" rear, so a 7/8" unit may be suitable, but I can't seem to find these, only 7/8" in the TR style.***
With that issue and reading over some threads, it seems like an adjustable proportioning valve installed backwards would work. Reading through Willwood's excellent writeup here, it seems that installing a proportioning valve backwards/on the front circuit would allow the rears to receive full line pressure, then taper off the fronts after a certain adjustable point is reached. This would work in panic stopping events, and I think generally appropriate for how people have described the Europa's braking.
It seems like that would handle most (all?) the changes to the braking system caused by larger front calipers.
I've never had a proportioning valve in a car with mixed drums and discs****, so I'm unsure how the delay and self-energizing of the drums would play into this. A hold-off valve (as mentioned in the first post) in combination with the reversed proportioning system may have more impact on the "delay" felt at the rear brakes.
I don't think a proper combination valve would work here, as it would delay the fronts slightly but also only allow the rear pressure to be reduced, hence separate units so you can flip the proportioning.
*Type 12 cost more for new units, parts to rebuild old ones are tricky to find (pistons have been OOS for years), and my other car also uses 14 so may as well share a single spare pair. BPNW currently has 12s in stock, but I'm not going to rely on those always being there in the future.
**tried to fit a few different dual units, didn't work. Series 1 is much worse than 2 in that regard.
***Ex: https://bpnorthwest.com/triumph/wheel-cylinder-875-trw-morgan-large-bore-tr4-to-tr6/
****yes, I know about rear disc conversions for the Europa. Later problem.
I intend to toss type 14 calipers onto my Series 1 Europa*, which of course started life with type 12 units.
Some napkin math says that swap would be a 25% increase in piston force for the same line pressure, further increasing the potential of a front lockup.
My car would have the same line pressure on the front and rear with a single circuit MC**, so I think a larger rear cylinder would help bring things back into balance. S1 was originally 3/4" rear, so a 7/8" unit may be suitable, but I can't seem to find these, only 7/8" in the TR style.***
With that issue and reading over some threads, it seems like an adjustable proportioning valve installed backwards would work. Reading through Willwood's excellent writeup here, it seems that installing a proportioning valve backwards/on the front circuit would allow the rears to receive full line pressure, then taper off the fronts after a certain adjustable point is reached. This would work in panic stopping events, and I think generally appropriate for how people have described the Europa's braking.
It seems like that would handle most (all?) the changes to the braking system caused by larger front calipers.
I've never had a proportioning valve in a car with mixed drums and discs****, so I'm unsure how the delay and self-energizing of the drums would play into this. A hold-off valve (as mentioned in the first post) in combination with the reversed proportioning system may have more impact on the "delay" felt at the rear brakes.
I don't think a proper combination valve would work here, as it would delay the fronts slightly but also only allow the rear pressure to be reduced, hence separate units so you can flip the proportioning.
*Type 12 cost more for new units, parts to rebuild old ones are tricky to find (pistons have been OOS for years), and my other car also uses 14 so may as well share a single spare pair. BPNW currently has 12s in stock, but I'm not going to rely on those always being there in the future.
**tried to fit a few different dual units, didn't work. Series 1 is much worse than 2 in that regard.
***Ex: https://bpnorthwest.com/triumph/wheel-cylinder-875-trw-morgan-large-bore-tr4-to-tr6/
****yes, I know about rear disc conversions for the Europa. Later problem.
9
eBay - Craigslist Ads - Other Listings / Re: Hemmings 74 TC F/S
« Last post by FourLoti on Monday,May 20, 2024, 07:55:25 PM »10