Doc's ULTIMATE TORQUE ARMS fit most of the frame UPDATE 2013

[Kin]

I'd like to reduce the size of the torque arm. I tried to cut them with a hacksaw but it's like doing nothing.

Any idea how to do cut them?

To be clear, why try to reduce it? If you're overhanging the edges of your dropout, you could just leave it overhanging. It's going to be a pita to cut. Is your hacksaw fresh and with the metal-cutting profile? You might get luck with some diamond dremel cutters (amazon has some cheap third party sellers) and running water, or a few of the ceramic disks (36 pack is like $6). Also, if you're obstruction is something barely obstructing, for my personally made torque arm I had .06 inches overlap with the wider weld on one of the sides, well, rather than cutting .06 inches off, I just beveled away with a grinder the amount that my torque arm stuck over the weld. (So I beveled a little .06" base triangle that cleared the weld.)

[Doctorbass]

I'd like to reduce the size of the torque arm. I tried to cut them with a hacksaw but it's like doing nothing.

Any idea how to do cut them?

To be clear, why try to reduce it? If you're overhanging the edges of your dropout, you could just leave it overhanging. It's going to be a pita to cut. Is your hacksaw fresh and with the metal-cutting profile? You might get luck with some diamond dremel cutters (amazon has some cheap third party sellers) and running water, or a few of the ceramic disks (36 pack is like $6). Also, if you're obstruction is something barely obstructing, for my personally made torque arm I had .06 inches overlap with the wider weld on one of the sides, well, rather than cutting .06 inches off, I just beveled away with a grinder the amount that my torque arm stuck over the weld. (So I beveled a little .06" base triangle that cleared the weld.)

Just to let you all know once again, This metal is the same as the one used to make some cutting tools... so to cut it you must have great special tools or...alot of patience...... or.. a laser or waterjet cutter


The cheapest way is using a grinder...
Doc

[Kin]

Yes! Very true. I probably shouldn't have suggesting making sure the hacksaw had the right profile.

But that's why dremel disks rule . It's diamond bit disks and ceramic disks are just grinding away a thin groove. I would really dislike grinding any serious amount from something tiny like the torque arm.

[cwah]

Thanks Guys, this torque arm makes me think about my Kryptonite U lock. So tough! lol

But an angle grinder should be able to cut it. Going to get one.

[Doctorbass]

Hello Guys,

Please, dont delay all your great project to wait for the next batch. I'm really busy these days and the vacancy coming so my load is high and i might delay the T-A few more weeks.

Like i said, i never expected that they become so popular and to sale so many of them... it appear i'm victim of their succes

Preparing all them and managing and making follow up on all sales around the world is taking time for me and i dont have alot time now and summer is already at the second half..

ill inform you all once i have more free time to manage that.

I hope you understand guys and i dont want to disappoint you all.

Doc

[tedcs]

Very nice piece of work

[Emoto]

Hello Guys,

Please, dont delay all your great project to wait for the next batch. I'm really busy these days and the vacancy coming so my load is high and i might delay the T-A few more weeks.

Like i said, i never expected that they become so popular and to sale so many of them... it appear i'm victim of their succes

Preparing all them and managing and making follow up on all sales around the world is taking time for me and i dont have alot time now and summer is already at the second half..

ill inform you all once i have more free time to manage that.

I hope you understand guys and i dont want to disappoint you all.

Doc

Hi doc
Well looks like ill have to make my own then, if i start with mild steel will they be hard enough if i heat them with a blow torch then dip in oil, for a cromotor

[sardini]

Doc take your time
but sooner or later i will need some of this babes for my new HS4080 rear wheel motor

[Mad]

Count me in for 2 sets when ever you can
Thanks in advance

[2fat]

Hi doc
Well looks like i need 1set with a DP420 epoxy for GT bike, i live in singapore, can you shipping it
Tell me the shipping price ? useing by USPS and email at :- hussin.syed@yahoo.com ....PLS
i pay by paypal
Thanks ...need reply back

Hi doc
i send PM ...Pls reply back ....PLS

[whereswally606]

Doc, I have a couple of your torque plates on my norco. I used henkel airplane metal epoxy with a similar shear strength to your dp420. Anyway I also drilled a hole in each one and bolted them to the alu frame on the inside. They work amazingly but drilling the hole was a nightmare. I was wondering whether you might alter the design so that they have a hole drilled for a single bolt like an M4 / M5? I killed a drill and several drill bits last time

[Doctorbass]

Doc, I have a couple of your torque plates on my norco. I used henkel airplane metal epoxy with a similar shear strength to your dp420. Anyway I also drilled a hole in each one and bolted them to the alu frame on the inside. They work amazingly but drilling the hole was a nightmare. I was wondering whether you might alter the design so that they have a hole drilled for a single bolt like an M4 / M5? I killed a drill and several drill bits last time

Hi,

It is normal that you killed some drill bit since the metal of these torque arms is domex wich is similar to the one used in the tools... and normal quality drill bit !

No prob to drill holes but they must not be too close to the corner of the axel slot. preferably closer to the external diameter.

DOc

[Doctorbass]

Hi doc
Well looks like i need 1set with a DP420 epoxy for GT bike, i live in singapore, can you shipping it
Tell me the shipping price ? useing by USPS and email at :- hussin.syed@yahoo.com ....PLS
i pay by paypal
Thanks ...need reply back

Please PM me

[hjns]

It is normal that you killed some drill bit since the metal of these torque arms is domex wich is similar to the one used in the tools... and normal quality drill bit !
No prob to drill holes but they must not be too close to the corner of the axel slot. preferably closer to the external diameter.

I drilled two M5 holes into DrBass' TAs and then threaded them M6. No problem, as long as you use the right tools. I used a vertical press drill with cobalt - steel drill bits. I took one of the axle washers and positioned it where the axle would be. Then drew a circle around it. I positioned the drill in such a way that the holes are 1mm out of the circle to make sure the bolts would not interfere with the washers. When drilling, I cooled using some cheap ATF mineral oil.

[2fat]

Hi Doc
how to order a Dual troque arms set
Pay 25$ and you get 2 torques arms (One for the left side and one for the right side with the leg for the derailleur.
from you
I live in singapore ,I will pay you by paypal
Send me the cost or the price ?
This is my email :- hussin.syed@yahoo.com
Thanks .....Pls reply back to me at hussin.syed@yahoo.com

[whereswally606]

It is normal that you killed some drill bit since the metal of these torque arms is domex wich is similar to the one used in the tools... and normal quality drill bit !
No prob to drill holes but they must not be too close to the corner of the axel slot. preferably closer to the external diameter.

I drilled two M5 holes into DrBass' TAs and then threaded them M6. No problem, as long as you use the right tools. I used a vertical press drill with cobalt - steel drill bits. I took one of the axle washers and positioned it where the axle would be. Then drew a circle around it. I positioned the drill in such a way that the holes are 1mm out of the circle to make sure the bolts would not interfere with the washers. When drilling, I cooled using some cheap ATF mineral oil.

Sure Henk, i know it is possible to do it given the right gear, I was in a bind of wanting to get out riding and not having the money to get a proper drill. So i was wondering whether a couple of variant designs incorporating m5 holes would open a great market for our good doctor here. Don't mean to add complication just its easier to use a common drill and bit with the torque arm as a guide to drill through the alu than it is to go through the torque plate itself.

will use a proper cobalt bit next time and a better drill press. Seriously though Doc a couple of water jetted holes to help us make these even easier to fit. Thanks

[Kin]

Water jetting holes might not be possible. (At least with the water cutters I've seen, not all I assume there's some mega-awesome one that compensates for this:) There's a splotch when the jet starts cutting into metal, and then it cuts clean from that initial point. Maybe they could put the splot in the very middle of the hole and then make the hole, but I'm not sure. Same thing with lasercutters. But a CNC machine with a carbide bit and the right settings could for certain drill the hole. But doing so would take time, another few minutes and so another few dollars. And if you had to start on a CNC drilling machine and then move to a waterjet machine you'd have to make certain the material was perfectly centered.

[teklektik]

More importantly, there's the question of where to put the hole so that it will never collide with a needed hole for a particular frame. Sometimes less is more.

[General Lee]

I did not thrust the "only glue way". So i made my one TA´s especially for my bike. I designed it with a metal plate to screw and glue it to the frame. For this i used the screw hole for the changeable dropout and the screw holes for the brakes. Because i used the screw holes for the brakes i had to push the axle mount position 1,75 cm further back. This way i got place to fit the new holes to mount the brake. Also i got more space between the rear swing and the tire in front. Now i can mount a bigger wheel

Maybe this helps someone as an idea if you don´t thrust 100% to the "only glue way".

Here i got some pics of it.

http://www.facebook.com/photo.php?fbid= ... =1&theater

[Doctorbass]

I did not thrust the "only glue way". So i made my one TA´s especially for my bike. I designed it with a metal plate to screw and glue it to the frame. For this i used the screw hole for the changeable dropout and the screw holes for the brakes. Because i used the screw holes for the brakes i had to push the axle mount position 1,75 cm further back. This way i got place to fit the new holes to mount the brake. Also i got more space between the rear swing and the tire in front. Now i can mount a bigger wheel

Maybe this helps someone as an idea if you don´t thrust 100% to the "only glue way".

Here i got some pics of it.

http://www.facebook.com/photo.php?fbid= ... =1&theater

Just a reminder that the T-A i'm offering are not what you call "only glue way".... they can be bolted also or welded.. they are made of a steel that is PERFECT for weld.

but if done correctly, the "only glue way". work like a charm at ANY POWER!

[Bazaki]

For how many years will this dp420 hold ? Can we trust it for 10 years ?

[usa_electrophile]

i'll take two pair

[Doctorbass]

For how many years will this dp420 hold ? Can we trust it for 10 years ?

It's aerospace grade epoxy.. i doubt that the stuff they send in the space would be limited tp 10 years life and some piceces would fly apart in the deep space after that

[Bazaki]

Ok I see

[ejonesss]

Doctorbass in a future version it would be nice to have holes where a mending plate could be attached to connect to the frame

http://images.orgill.com/200x200/7572688.jpg

to be attached like http://www.e-bikekit.com/shop/images/pr ... ary/90.jpg

so no glue is required because many of todays bikes are aluminum not steel and could break easier.