News:

20 January 2025 - is our 8th birthday! How time flies.

Main Menu

Converting to radial capilers

Started by seth, Saturday, 24 April 2021, 04:08 AM

Previous topic - Next topic

SpongeBob

Quote from: grog on Sunday, 06 June  2021, 06:15 PM
Good lookin item Notty. My question is still, anyone know of bike types that fitted radials, 17-19mm bore. Must be a few in wreckers yards if i knew what i was looking for.
At least Kwak GTR1400 do feature radial masters as OEM, if I'm not mistaken. With specific reservoirs, though, that look large. Most certainly 19mm bore. Also I guess these are Nissin MCs, so hopefully the switch has the same connector as the 14 one.

Notty

The older I get the better I was
The problem with retirement is that you cant take a day off

SpongeBob

Quote from: SpongeBob on Sunday, 06 June  2021, 08:43 PM
Quote from: grog on Sunday, 06 June  2021, 06:15 PM
Good lookin item Notty. My question is still, anyone know of bike types that fitted radials, 17-19mm bore. Must be a few in wreckers yards if i knew what i was looking for.
At least Kwak GTR1400 do feature radial masters as OEM, if I'm not mistaken. With specific reservoirs, though, that look large. Most certainly 19mm bore. Also I guess these are Nissin MCs, so hopefully the switch has the same connector as the 14 one.
@grog
If you are interested, I can sell you the one I used to use. Together with the corresponding Nissin radial clutch master cylinder for consistent look :-)
Obviously not new but in very good condition, no mark, no scratch (no even on the levers), maybe still with some mosquitos/flies/butterflies bits still stuck in areas difficult to reach when cleaning :-) Genuine white plastic reservoirs, provided with 'stealth' covering "socks" (black, no logo or branding whatsoever). Fully black, both bodies and levers.
Note: brake MC 17mm bore. Clutch MC 19mm bore.

grog

Sponge Bob, thanks for offering. Would work out expensive, 2 cyls & freight. Im dont want to change clutch, mainly as it works so well as is. Thanks anyway.

grog

Today,was offered a GSXR1000 radial cylinder. doesn't know the bike model or bore size. I checked and seems most for that bike were 19 mm. Its genuine Suzuki but doesnt know brand. Guessing it would be Nissin. $50 with resevoir and lever, told me looks as new. Would that be a good option to try? 

SpongeBob

Quote from: grog on Tuesday, 08 June  2021, 05:36 PM
Today,was offered a GSXR1000 radial cylinder. doesn't know the bike model or bore size. I checked and seems most for that bike were 19 mm. Its genuine Suzuki but doesnt know brand. Guessing it would be Nissin. $50 with resevoir and lever, told me looks as new. Would that be a good option to try?
There is good chances this is a 19mm bore Nissin one. Ask the seller for a picture of the underside of the master cylinder, there should certainly be a "3/4" (i.e. 19mm) 'molded onto the cylinder body.
At that price, that would worth a try.

attached a picture of what can be seen on a ~17mm Nissin brake MC, so you see what it looks like.
   

grog

Thank You Sir. will do that tomorrow. If its 19, should be ok, better than stock ?

SpongeBob

Quote from: grog on Tuesday, 08 June  2021, 07:37 PM
Thank You Sir. will do that tomorrow. If its 19, should be ok, better than stock ?
*radial* is better than stock :)
19 will be close enough to OEM master/caliper ratio.
17 would give you a bit more lever travel, even more progressive feeling and greater force at the end. But different feeling compared to 19, so you may need to get accustomed to it.

SFC1000

Seeing the imperial size on that master reminded me of a brake guy once telling me that it doesn't matter if Euro, Jap or any metric brakes they all use imperial size cups and I have found this to be true.
CAUTION - My forum posts may be worth what you paid for them!

Hooli

Imperial are the only real measurements.

SpongeBob

Quote from: Hooli on Tuesday, 08 June  2021, 10:01 PM
Imperial are the only real measurements.
This is why US Army has run away from this and use metric, leaving imperial to "average" people  :lol:  :whistling:

Hooli

The US Army that lost the only war they had almost on their own & joined all the others late once they knew we were winning?

They even lost a war against themselves, which is a very french thing to do.

Eric GSX1400K3

Quote from: SpongeBob on Tuesday, 08 June  2021, 07:50 PM
Quote from: grog on Tuesday, 08 June  2021, 07:37 PM
Thank You Sir. will do that tomorrow. If its 19, should be ok, better than stock ?
*radial* is better than stock :)
19 will be close enough to OEM master/caliper ratio.
17 would give you a bit more lever travel, even more progressive feeling and greater force at the end. But different feeling compared to 19, so you may need to get accustomed to it.

As far as i know factory standard Nissin MC with "5/8" stamped on the bore fitted to my K3. So thats 15.8mm.
I try to take one day at a time, however sometimes several days catch up with me at once.

SpongeBob

#43
Quote from: Eric GSX1400K3 on Tuesday, 08 June  2021, 11:44 PM
Quote from: SpongeBob on Tuesday, 08 June  2021, 07:50 PM
Quote from: grog on Tuesday, 08 June  2021, 07:37 PM
Thank You Sir. will do that tomorrow. If its 19, should be ok, better than stock ?
*radial* is better than stock :)
19 will be close enough to OEM master/caliper ratio.
17 would give you a bit more lever travel, even more progressive feeling and greater force at the end. But different feeling compared to 19, so you may need to get accustomed to it.

As far as i know factory standard Nissin MC with "5/8" stamped on the bore fitted to my K3. So thats 15.8mm.

You are talking about an axial master cylinder as OEM MCs are on 14s; hence the difference in bore diameter to keep the same ratio with the same calipers, when comparing axial and radial master cylinders. See Nissin comparison tables, for example: 5/8" axial is equivalent to 3/4" radial.
This is why high end road bikes with radial brake cylinders as OEM such as GSXRs are delivered with 3/4" (19mm) bore master cylinders, to provide an equivalent MC-vs-calipers ratio, as this is what is being legally validated for road use.



SpongeBob

#44
Quote from: Hooli on Tuesday, 08 June  2021, 11:43 PM
The US Army that lost the only war they had almost on their own & joined all the others late once they knew we were winning?

They even lost a war against themselves, which is a very french thing to do.

Here we go... I am sure I wouldn't have got this last comment if you haven't seen I'm living in France...

SMF spam blocked by CleanTalk