CB250N Superdream brake calipers

[alexanderfitu]

Hi all

Any ideas what caliper will fit in place on a 82 superdream. I have had a few of these now, and I hate the front brakes, got to be something that will fit that's a bit more modern.

The ones on there are broken, leaking and rubbish. I may as well buy something else that's better, from a breaker.

Any ideas?

[pepperami]

I have a Superdream of lovelyness
I refurbished the existing caliper and master cylinder + put modern pads in it, and I can smoke the front tyre if I really want to.

The existing caliper is fine if it is set up right
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I am the sum total of my own existence, what went before makes me who I am now!

[MCN.]

Fireblade front end drops straight in.

[Nobby the Bastard]

[alexanderfitu]

[alexanderfitu]

[alexanderfitu]

[pepperami]

[alexanderfitu]

[Shaft]

Put a 400N front end on, then you can have brakes that are twice as wooden
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[bikenut]

Primarily because I stuck a wacking 3 cylinder diesel in it. Another reason it would be nice to have better brakes


now that I would like to see, post up a picture please.

also post a picture of your cracked caliper please. you know that they bolt together?

twin disc 400 is a much better brake ( solid caliper hydraulic unit part, slide caliper as 250 but done a different way, the bike is better as well from memory so needs better brakes )

riding a wet dream 250 sure improves your riding skills as everything is planned well in advance from memory.

as to locking the front wheel? and smoking tyres? on a wet dream?? 400 perhaps but 250, not on this planet mate! unless you have a servo fitted.

ps you can never be in a hurry on a 250 wet dream, a 400 on the other hand!?
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[alexanderfitu]

Pics as requested:

https://fotifixes.com/imagehosting/images/2015/07/03/image2.th.jpg https://fotifixes.com/imagehosting/images/2015/07/03/image3.th.jpg https://fotifixes.com/imagehosting/images/2015/07/03/image4.th.jpg

The caliper is cracked on the ring that supports the seals, not on the outer body. I don't have a picture of that.

To be honest, the brakes I have on it now aren't THAT bad, I have ridden superdreams with worse, I think its primarily the horrific feel at the lever.

Just to confirm, I have tried Ducati 600 calipers, looks like they would fit, all bolt holes line up, but the caliper is too wide on the inside and it fouls the wheel.

[Snod Blatter]

That is really cool!

What is the spacing between the bolt holes then? 65mm?
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1994 CB250, 1984 CBX250RS-E, 1989 K100RS, 1995 TRX850, 2016 Z250SL

[bikenut]

some turd eh!! respect!!!!!

having trouble about where the crack is in the hydraulic part of the splittable caliper??

oe pads seem good but Armstrong pads are good.

have you considered braided brake hose?

machining etc is no problem for you so why not double up the larger 250 disc set up, or go for a 400 front brakes, twin smaller disc with different m/cyl but a good quite powerful brake.

is the master cylinder the problem, more displacement needed?

even a servo set up? within reason?

ask m and p for tour max disc info or visit tour max for disc info, offset and pcd etc, then research that route for caliper offset etc.

from memory you may be able to "invert" a 250 caliper and holder so it can fit on the other side, so a twin disc 250 dia disc front brake brake

what engine is it may I ask
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nuts about bikes

[alexanderfitu]

[alexanderfitu]

[Snod Blatter]

[alexanderfitu]

Its funny you mention the YZF R125 brakes, as I have tried to fit these in the past with some success, they require grinding down the disc entrance, as the disc is thicker on the Honda, than on the Yamaha, Its trivial to make a bracket to make up the difference in bolt diameter.

Also, as you say, the pads only cover half the disc area, but in reality its not a huge issue.

I would prefer something that doesnt require such extensive modification.

What year is your CB250?

There are lots of CBR250 front brake calipers that look like they would fit too?

NC29 comes up as a CBR400RR?

[Casper]

https://www.ebay.co.uk/itm/HONDA-CB400n-SUPERDREAM-FRONT-NISSIN-BRAKE-CALIPER-VGC-Dream-1981-RARE-ITEMS-R-/331595695629?pt=LH_DefaultDomain_3&hash=item4d34a4c60d

What is the engine from. Kind of speed and MPG are you looking at. I am loving the whole idea of diesel bikes. The Dutch have some great results using Triumph tigers.

[alexanderfitu]

Meh, don't really want to put the same type single piston caliper on there if I can avoid it.

Its a Kubota D850 3 cylinder diesel, with a CVT box, around 22bhp peak power.

Its really good around town and will do 75 on the motorway without issues.

Currently getting around 85-90mph, but some tweaks need to be made which will increase that a fair bit I am hoping.

[Snod Blatter]

[kramdra]

Do not like them... to think the cbr250RR was only a couple years later

Very nice engine swap


Many, many bikes use the Nissin two pot callipers. CBR600 F3's, CBR400's, CBR250RR's - all the same calliper.

If you want a newish right calliper, the new CBR250's are the same (and I have one on my RR, was a few on ebay from 0 mile bikes)

[pepperami]

[LongJohn22]

Lovely conversion, total respect.

[RhynoCZ]

We have got to hear it! Could you make a video of it running, please?
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
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