Thumb Brake, winter project

[Leezx10r]

And here it is!


I wish! After talking with a few of you fine gentleman (and ladies) at the track, I have really been interested in the benefits of starting to use the rear brake more.

I have tried it quite a few time, and fine the benefits really good for controlling the front end, but found it very tricky to use with my right foot.

So, thumb brake it is! But am not going to spend $800+ on one, so thought I would have a go myself.

I started looking at the designs that are on the market, and went from there!

As we all have, there's a bag a old crashed parts in the corner of the shed, and thought there could be some good options.

So I need something to clamp around the fork leg!



It's a bit big, so time for some weight reduction.



Offer the OEM rear master cylinder up, and adaptor plate time!







Time to see how it looks on the bike!





An old gear lever could work as a thumb lever!





So at first it looks ok, tight, but we all like that!
Time for some welding! Now my welding skills are between, low to average, but I have a Danny, this boy can weld.



Flipped to the other side!





This is the type of projects Danny does through his business, he's very good!



Now at this point, all was looking OK, but after some more trial fitting the oem rear master was too big, and wouldn't work on full lock, so time for a rethink and time to look through the parts bin again.

Rev 1.2.





Trail fit.







So, the project is making good progress, next step:
Order new brake line.
Workout and order new bearings.
Change lever tip for better ergonomics for the thumb.

Anyway just wanted to share my little winter shed project.






Sent from my iPhone using Tapatalk

[stevem]

Wow dude , mad project. Subscribed.

[Little Mick]

Great stuff mate

Sent from my SM-N9005 using Tapatalk

[Ruckos87]

Awesome engineering. Love it


Sent from my iPhone using Tapatalk

[RIPPERTON]

Are you getting rid of the foot pedal ?

[chubb]

Hmmm interesting

[Leezx10r]

Wow dude , mad project. Subscribed.

Great stuff mate

Sent from my SM-N9005 using Tapatalk

Awesome engineering. Love it

Thanks guys! It's a work in progress, but am getting there.

Are you getting rid of the foot pedal ?

Yes the foot pedal has gone, but the way I have built it gives me the option to put everything back if I change my mind.


Sent from my iPhone using Tapatalk

[Turbo]

This is totally badass!! Nice work, Lee!!
A few strokes of genius in there, love seeing the thought process as it progresses.
Keep the updates coming!!

[RIPPERTON]

Back in 08, on my CBR1000RR I had a cable over hydraulic controlled by a twist grip on the left bar. The cable went down to the foot pedal.
Worked but had to twist my wrist so far made it uncomfortable under heavy braking.

[Marshy]

That's fricken AWESOME!!! Love it! Top job mate, and thanks for sharing. Ingenious!

[Leezx10r]

This is totally badass!! Nice work, Lee!!
A few strokes of genius in there, love seeing the though process as it progresses.
Keep the updates coming!!

Cheers Owen. Yeh, will keep the updates coming through mate, still trying to think of a good option on the bearings, but am sure I can work something out.

Back in 08, on my CBR1000RR I had a cable over hydraulic controlled by a twist grip on the left bar. The cable went down to the foot pedal.
Worked but had to twist my wrist so far made it uncomfortable under heavy braking.

If would have been nice to have both options, but since I didn't really use it in the oem location, for my simple mind it was easier just to move it all.

That's fricken AWESOME!!! Love it! Top job mate, and thanks for sharing. Ingenious!

Cheers Nick. I don't mind being the guinea pig to see if it will work.
Plus as we all know, everything loves a build thread.



Sent from my iPhone using Tapatalk

[zoidberg]

My brain always tries to convince me to do something like this, then it realises I am incapable. Now I can just watch what you do and pretend I am going to do the same.

Looks the goods mate! I need a Danny for some projects. Is the Danny plug and play? Or is a build required beforehand? Is the Danny portable?

[Leezx10r]

My brain always tries to convince me to do something like this, then it realises I am incapable. Now I can just watch what you do and pretend I am going to do the same.

Looks the goods mate! I need a Danny for some projects. Is the Danny plug and play? Or is a build required beforehand? Is the Danny portable?

A "Danny" is a mythical creature, who moves with the changing winds! He has also been known to disappear in a cloud of argon.


Sent from my iPhone using Tapatalk

[Mr.Ed]

Great stuff mate

Sent from my SM-N9005 using Tapatalk

Hope you're taking notes, I feel like ordering something...

[Slow bro]

I going to do this to mine, but keeping the foot brake setup. You can get the proper setup from eBay UK cheapish if your prepared to wait a while, if you don't have a Danny handy. I was going to do it on my 600 as well but everywhere I set it up it hits something. Very frustrating.

[RIPPERTON]

If you run 2 master cylinders in the same circuit, the lower one will need its piston adjusted so far in that its compensating port is covered so when you apply pressure from the upper MC, it doesnt lust leak back out of the lower MC compensating port. You can also remove the reservoir from the lower MC.

[Slow bro]

If you run 2 master cylinders in the same circuit, the lower one will need its piston adjusted so far in that its compensating port is covered so when you apply pressure from the upper MC, it doesnt lust leak back out of the lower MC compensating port. You can also remove the reservoir from the lower MC.

Is this type of setup no good?image.jpeg

[RIPPERTON]

Is this type of setup no good?image.jpeg

In this pic, the upper MC is flowing through the lower MC compensating port and it would have to be drilled out so it would flow more.
Compensating ports are very small maybe 1.5mm diameter and that would slow down the action of the thumb brake.

[Slow bro]

In this pic, the upper MC is flowing through the lower MC compensating port and it would have to be drilled out so it would flow more.
Compensating ports are very small maybe 1.5mm diameter and that would slow down the action of the thumb brake.

Thanks

[Leezx10r]

Bearings done, did a few little steps in the shed today, but that's about it until the brake line and other parts arrive!




Sent from my iPhone using Tapatalk

[Slow bro]

Looking good

[triumph]

I think I would be lost without my rear break pedal .

[RIPPERTON]

If you run 2 master cylinders in the same circuit, the lower one will need its piston adjusted so far in that its compensating port is covered so when you apply pressure from the upper MC, it doesnt lust leak back out of the lower MC compensating port. You can also remove the reservoir from the lower MC.

Realised last night, piggybacking 2 banjos on the pressure side of the lower MC wont work because when you operate the lower MC the fluid will just piss out of the top MC reservoir so the setup Slow bro showed is the only way it would work.
http://tarmactalk.com/forum/attachme...4&d=1467514254

[Simmo]

That is seriously impressive. I would love to be able to do this but realistically would probably just cough up the $800.
You know you will need a sticker on it like Dovi right?!


Sent from my iPhone using Tapatalk

[Leezx10r]

That is seriously impressive. I would love to be able to do this but realistically would probably just cough up the $800.
You know you will need a sticker on it like Dovi right?!


Sent from my iPhone using Tapatalk

Your right I do need a sticker 119


Sent from my iPhone using Tapatalk

[Leezx10r]

Well that little project is all complete apart from testing on the track.
New brake line arrived from Hel on Friday as did the new m10x1.00 banjo with bleed nipple and other little parts to finish off the project.
Was a bugger to bleed, and probably didn't help with the line being 1550mm long!
But it's all done, and the feel is great. Probably around 10-15mm of travel which feels good to me.
Here is a few final pics all installed.






Sent from my iPhone using Tapatalk

[johnnyb]

Well that little project is all complete apart from testing on the track.
New brake line arrived from Hel on Friday as did the new m10x1.00 banjo with bleed nipple and other little parts to finish off the project.
Was a bugger to bleed, and probably didn't help with the line being 1550mm long!
But it's all done, and the feel is great. Probably around 10-15mm of travel which feels good to me.
Here is a few final pics all installed.






Sent from my iPhone using Tapatalk

Nice one mate.


Sent from my iPhone using Tapatalk

[Turbo]

Amazing work, Lee!! This is such a good mod, thanks for sharing.
Can't wait to hear how you get on with it on track!

[Slow bro]

Well done, hope it works well.

[Marshy]

Looks flipping amazing!!! Can't wait to see how you like it. I reckon the $800 version might be on my christmas list.....

[triumph]

that's a really good setup you have there .

[Leezx10r]

Thanks guys! There's going to be a bit of tweaking to get the levers/controls in the correct location, but there's a fair bit of adjustment.
Keen to see how it goes on the track 🏻


Sent from my iPhone using Tapatalk

[stevem]

Awesome Lee.

[Ruckos87]

Very cool!!! Nice work


Sent from my iPh

[zoidberg]

Well that little project is all complete apart from testing on the track.
New brake line arrived from Hel on Friday as did the new m10x1.00 banjo with bleed nipple and other little parts to finish off the project.
Was a bugger to bleed, and probably didn't help with the line being 1550mm long!
But it's all done, and the feel is great. Probably around 10-15mm of travel which feels good to me.
Here is a few final pics all installed.






Sent from my iPhone using Tapatalk

Great, now look what you've done too...


But seriously, this is so awesome mate, I can't wait to hear how it goes. I don't have the skill to do this myself, and since (I'm assuming) your Danny is a one use item, I can't even borrow it to do some work to my bike.

Might have to ask satan, santa? To get me one of the $800 jobbies for xmas too.

[Leezx10r]

Great, now look what you've done too...


But seriously, this is so awesome mate, I can't wait to hear how it goes. I don't have the skill to do this myself, and since (I'm assuming) your Danny is a one use item, I can't even borrow it to do some work to my bike.

Might have to ask satan, santa? To get me one of the $800 jobbies for xmas too.

Haha! Just do it, get it put on the Christmas list, but only if you've been a good boy! Second thoughts, best not to add anything to the Christmas list lol


Sent from my iPhone using Tapatalk

[Ruckos87]

Haha! Just do it, get it put on the Christmas list, but only if you've been a good boy! Second thoughts, best not to add anything to the Christmas list lol


Sent from my iPhone using Tapatalk

I don think Nathan needs anyone else cuming down his chimney, I recon there's a right mess at his place already.


Sent from my iPh

[Leezx10r]

I don think Nathan needs anyone else cuming down his chimney, I recon there's a right mess at his place already.


Sent from my iPh

Sent from my iPhone using Tapatalk

[Simmo]

Looks the business.
Sticker? Marshy?



Sent from my iPhone using Tapatalk

[Marshy]

Finishing touches


Sent from my iPhone using Tapatalk

[Little Mick]

Hope you're taking notes, I feel like ordering something...

you have the address and the invite

[Little Mick]

Great stuff Lee. Always love seeing things made and work! Well done bud

[zoidberg]

So Lee, howabout getting a report on how the thumb brake worked out? It's on my to-do list for sure.

[Leezx10r]

So Lee, howabout getting a report on how the thumb brake worked out? It's on my to-do list for sure.

Sorry for the late reply.

So update: for first test out on the track, compared to being sat on the bike in the shed making bike sounds, it went well!

What I do need to change is the lever as I found it fouling on my hand and was a little distracting, so took the knob off and was great for the rest of the day.

Once I have changed the lever I may look at changing the leverage, as it could do with a little more travel, thus less force on my poor office hand 🏻


Sent from my iPhone using Tapatalk

[Turbo]

Yeah, I can imagine you'd find a knob distracting

So was your mind more free to think about and use the thumb lever as opposed to the foot?
Or, is it just a question of access on the right side turns?

[Marshy]

We all find knobs distracting!!


Sent from my iPhone using Tapatalk

[Leezx10r]

The knob was hitting my left hand, very uncommon feeling

Found it much better than using the foot brake, couldn't get used to that, but just need to work on placement so my knob don't foul again


Sent from my iPhone using Tapatalk

[zoidberg]

The knob was hitting my left hand, very uncommon feeling

Found it much better than using the foot brake, couldn't get used to that, but just need to work on placement so my knob don't foul again


Sent from my iPhone using Tapatalk

No one likes a foul knob Lee.

Such an awesome project to do mate, seriously well done. Legend.

[Linden]

Seriously the 2 current threads polishing and this one are getting disturbing

[Little Mick]

Only because you are cross reading them linden. Polishing and knobs and all

Sent from my SM-N9005 using Tapatalk