SLR, Super SLR, New Super SLR, SLR EV, etc.

[rogerzilla]

DA 7700 brakes don't open enough to let a 25mm tyre out!

[The utility cyclist]

...R451 has 'QR wider open'....

aha! That makes more sense than a whole new caliper model number just for a different locknut! Yes, I think you can even see that the pinch bolt assy might swing further on the photos of the back of the calipers. I guess BR-R450 mayn't open wide enough to let a 32mm tyre out when it is mounted on a narrow rim...?

cheers

R451 calipers will not allow a 32mm tyre through it with the QR open, we've had to let the tyre down significantly to do so.

[Bice]

This is a really useful thread for those of us still using rim brakes, but I am not sure I understand it all. Sadly, some links have expired.

I have a bike with Ultegra ST-6700 shifters and BR-R650 front brake. Having dismantled and regreased a number of caliper brakes, obtaining considerable improvement, I am thinking of a SLR upgrade as a more effective design.

Would a BR-6800 be an upgrade and be happy with these shifters?

This appears to be the case according to Shimano here: https://productinfo.shimano.com/#/com?c ... acid=C-456

And what is exactly a BR-6800-F? [Forget this: it obviously just means front]

I am using an old 10-speed wheelset of Ultegra rims and Mavic Open Pros, but considering lighter wheels, hence improving the brakes. (The current BR-R650 allows mudguards, which would be useful for winter and touring.)

Also, do the Shimano 105 R700 with 49mm drop 51mm reach mean they would accommodate thin mudguards, too?

[cycleruk]

Also, do the Shimano 105 R700 with 49mm drop 51mm reach mean they would accommodate thin mudguards, too?

105 R7000 .. Mudguards with Open Pros and 25mm tyres.
Need cleaning after yesterdays ride.

[Bice]

Also, do the Shimano 105 R700 with 49mm drop 51mm reach mean they would accommodate thin mudguards, too?

105 R7000 .. Mudguards with Open Pros and 25mm tyres.
Need cleaning after yesterdays ride.

105 brakes.jpg

Very good to see. Are the brakes effective and an improvement on non SLR rim brakes, if you have experience of them.

[Brucey]

Also, do the Shimano 105 R700 with 49mm drop 51mm reach mean they would accommodate thin mudguards, too?

105 R7000 .. Mudguards with Open Pros and 25mm tyres.
Need cleaning after yesterdays ride.

105 brakes.jpg

your brake blocks are the wrong way round

cheers
Brucey

[Bice]

Also, do the Shimano 105 R700 with 49mm drop 51mm reach mean they would accommodate thin mudguards, too?

105 R7000 .. Mudguards with Open Pros and 25mm tyres.
Need cleaning after yesterdays ride.

105 brakes.jpg

your brake blocks are the wrong way round

cheers
Brucey

Wonderful to see you back and well spotted: I was looking at the mudguard clearance. (Not sure I am entirely side with cycleruk's credo: "You'll never know if you don't try it" on this one.)

Any view on SLR brakes being a design improvement? (Possibly the last for a while with rim brakes, as the industry wants us all to buy expensive disc brakes.)

[cycleruk]

105 brakes.jpg

your brake blocks are the wrong way round
cheers
Brucey

Thank you Brucey, Not any more. (just this one block - upside down.)
This block came loose last week while out on a ride
Tightened it up there and then but obviously hadn't noticed it had twisted over. All other blocks re-checked.

[cycleruk]

Also, do the Shimano 105 R700 with 49mm drop 51mm reach mean they would accommodate thin mudguards, too?

105 R7000 .. Mudguards with Open Pros and 25mm tyres.
Need cleaning after yesterdays ride.

105 brakes.jpg

Very good to see. Are the brakes effective and an improvement on non SLR rim brakes, if you have experience of them.

Brakes work fine but wouldn't really know if they are any better than previous types.
All my brake systems have been good and I've had a few.

[Brucey]

Any view on SLR brakes being a design improvement? (Possibly the last for a while with rim brakes, as the industry wants us all to buy expensive disc brakes.)

they are an improvement but I was happy enough with the older designs tbh. 'Gilding a Lily' springs to mind......

[ElCani]

No doubt I could find answers to this elsewhere if I looked hard enough but…

Does anyone here have direct experience using NSSLR (the latest type) brake levers with older (Deore LX in this case) canti brakes? I understand the combo is sub-optimal, but I’d like to know to what extent and in what way.

Thanks!

[Brucey]

not enough power/MA for most folk; you can compensate for this [to some extent] with a lower straddle but the brake will most likely require frequent readjustment.

[gregoryoftours]

No doubt I could find answers to this elsewhere if I looked hard enough but…

Does anyone here have direct experience using NSSLR (the latest type) brake levers with older (Deore LX in this case) canti brakes? I understand the combo is sub-optimal, but I’d like to know to what extent and in what way.

Thanks!

Try full size V brakes with them I know that it's supposedly a no no as pad wear could mean that you bottom out the levers more easily but it hasn't been an issue in my experience of 2 years hilly use. Just very strong brakes with good modulation. Keep an eye on them and fit with barrel adjustable noodles. I have been surprised that they have not needed adjusting more regularly than any other bike setup I have.

[gregoryoftours]

This is a really useful thread for those of us still using rim brakes, but I am not sure I understand it all. Sadly, some links have expired.

I have a bike with Ultegra ST-6700 shifters and BR-R650 front brake. Having dismantled and regreased a number of caliper brakes, obtaining considerable improvement, I am thinking of a SLR upgrade as a more effective design.

Would a BR-6800 be an upgrade and be happy with these shifters?

This appears to be the case according to Shimano here: https://productinfo.shimano.com/#/com?c ... acid=C-456

And what is exactly a BR-6800-F? [Forget this: it obviously just means front]

I am using an old 10-speed wheelset of Ultegra rims and Mavic Open Pros, but considering lighter wheels, hence improving the brakes. (The current BR-R650 allows mudguards, which would be useful for winter and touring.)

Also, do the Shimano 105 R700 with 49mm drop 51mm reach mean they would accommodate thin mudguards, too?

6800 are slightly less powerful than the following generation, R7000/R8000 and also have less tyre/mudguard clearance. Check the product specifications

[Brucey]

whether or not ypu can fit a mudgurd does vary with brake type but it is really the frame design is the thing to worry about; not every frameset has enough clearance for mudguards and brake reach may limit your choices here.