My titanium obsession

Posted: Wed May 03, 2017 2:35 pm

headless wrote:

nlovie wrote:

if you have a frame / swingarm that is prone to flexing then Ti may not be the best choice - but if you have a stiff structure then the need for the bolt to support flexing diminishes. Take this further (stiffer) and there is no need for a through bolt at all - can't get lighter than fresh air Smile

- old style VF / around 200yr fireblade etc.. - horses for courses

That was my thinking as well. I'm not an engineer, but I don't think the pivot bolt substantially affects this swingarm's rigidity.

Your JMC is better then say an arm without a brace but it really need's side struts and then you would have something. The struts are what ties them altogether and makes it rigid.

We can cure that though. I know a guy with a welder. Very Happy

Posted: Fri May 05, 2017 4:31 am

headless wrote:

nlovie wrote:

if you have a frame / swingarm that is prone to flexing then Ti may not be the best choice - but if you have a stiff structure then the need for the bolt to support flexing diminishes. Take this further (stiffer) and there is no need for a through bolt at all - can't get lighter than fresh air Smile

- old style VF / around 200yr fireblade etc.. - horses for courses

That was my thinking as well. I'm not an engineer, but I don't think the pivot bolt substantially affects this swingarm's rigidity.

Not the swinger at all. I was wondering how the bolt being that long and Ti would carry torque.

If you look at springs of the same value, but one of Ti and one of steel, comparatively, you can see the difference from across the room. I also remember the BSA debacle of the all Ti chassis and swinger and almost everything else (They built a 500 Single that only weighed 194 pounds in 1966).

But if it works, I guess it works! Very Happy

Posted: Fri May 05, 2017 6:24 am

it is a good point Shawn and why you need to be careful when replicating what someone else has done - are you replicating the whole "system" or just one bit - this goes for anything
Take Brent's chassis - don't know the detail but its got a lower brace tube running parallel with the swing arm pivot, amongst other strengthening bits - I would imagine the swing arm is shimmed or accurately spaced to establish the right preload on the taper bearing - i.e. its possibly not reliant on the bolt torque to "squeeze" the frame against the swing arm to take up any lateral movement - so its not reliant on high bolt torque

take away the added chassis stiffness - add in some frame flex and the more ductile bolt will give (elastically) before a stiffer one - i.e. you may establish the initial clamping torque but what happens next when the flexing force tries to add to this ? - it may give and enable flex where a stiffer bolt may help to prevent it

ok - this is a thought game only - in the real world you probably wouldn't notice anything - carry on Laughing

Posted: Fri May 05, 2017 5:35 pm

nlovie wrote:

it is a good point Shawn and why you need to be careful when replicating what someone else has done - are you replicating the whole "system" or just one bit - this goes for anything
Take Brent's chassis - don't know the detail but its got a lower brace tube running parallel with the swing arm pivot, amongst other strengthening bits - I would imagine the swing arm is shimmed or accurately spaced to establish the right preload on the taper bearing - i.e. its possibly not reliant on the bolt torque to "squeeze" the frame against the swing arm to take up any lateral movement - so its not reliant on high bolt torque

take away the added chassis stiffness - add in some frame flex and the more ductile bolt will give (elastically) before a stiffer one - i.e. you may establish the initial clamping torque but what happens next when the flexing force tries to add to this ? - it may give and enable flex where a stiffer bolt may help to prevent it

ok - this is a thought game only - in the real world you probably wouldn't notice anything - carry on Laughing

Exactly!

Can you imagine trying to ride one of these over cooked spaghetti chassis's with a 200hp bullet stuffed in it? Shocked

Posted: Sat May 06, 2017 7:59 am

Shawn_Mc wrote:

Exactly!

Can you imagine trying to ride one of these over cooked spaghetti chassis's with a 200hp bullet stuffed in it? Shocked

days of old - when my pip higgin tuned GS1000 liked to weave above 100mph progressing into a full blown lockstop shearing tank slapper that pitched me over the bars just so I could experience what a lump of cheese must feel like as its put through the grater - oh and also learned that a denim cut off and a pair of jeans have the abrasion resistance of a piece of damp bog roll - and the perverse pleasure middle aged over weight spinster nurses have in separating bits of denim cloth from minced up fleshy bits - oh the misty memories of a miss spent youth Laughing

Posted: Wed Jun 14, 2017 4:10 am

Some new bling.

Posted: Thu Jun 15, 2017 12:59 am

Wow!

Posted: Tue Aug 01, 2017 8:33 am

I know this is headless's thread but as its about Titanium I thought I might add to it.

Some of you have already received the improved shift detent and read that it was copied directly from our own and as developed in our Superbike.
Well this is it, the original. It is identical in shape and form but is made from Titanium and further lightened which explains the holes. Further to all this as that I am about to undertake the same for everything else in the picture.

Captain

Posted: Tue Aug 01, 2017 9:52 pm

Nice work!

Posted: Thu Aug 31, 2017 4:43 am

Why?
A. Because I could and why not
B. it was steel and rusty
C. it's lighter
D. Bling factor
E. It's my obsession
F. All of the above

Posted: Sat Sep 02, 2017 7:41 pm

Rear brake master cylinder adjustable push rod whatsit? Shocked

Posted: Mon Sep 04, 2017 7:52 pm

Quote:

Rear brake master cylinder adjustable push rod whatsit? Shocked

You got it!.

Posted: Thu Sep 28, 2017 7:17 pm

Loverly

Posted: Fri Sep 29, 2017 1:56 am

Thanks. It will look a lot better after Tom does his magic.

Posted: Mon Dec 10, 2018 5:21 pm

I have been way overdue on updating this thread. My latest upgrades are a titanium Jay Gui exhaust with an aluminum muffler by JESBuilt, rearsets, my fender eliminator for a lidded tailpanel and a battery box with a Antigravity AG801 Li-ion battery

I mod'ed the taillight using an LED taillight from PGSmick.

Posted: Mon Dec 10, 2018 6:54 pm

Thumbs up!!

Posted: Mon Dec 10, 2018 8:42 pm

Looks great!!

Hawk Joined: Jan 15, 2009 Posts: 408 Location: Plymouth

Beauty full

Posted: Tue Dec 11, 2018 3:38 pm

headless wrote:

I have been way overdue on updating this thread. My latest upgrades are a titanium Jay Gui exhaust with an aluminum muffler by JESBuilt, rearsets, my fender eliminator for a lidded tailpanel and a battery box with a Antigravity AG801 Li-ion battery

Love that oil cooler mount! Nice work!

Posted: Tue Dec 11, 2018 5:27 pm

f4fast wrote:

Love that oil cooler mount! Nice work!

Thanks, but I don't deserve all the credit. The frame mounts were made by charliemarley and I made the mount for the cooler.

BTW, the stock shocks are temporarily mounted while the Fox shocks are being rebuilt.

Posted: Tue Jan 21, 2020 2:19 am

"titaniumized" Nitro rearsets

Posted: Wed Jan 22, 2020 4:24 pm

When are you making a titanium frame? That's what we're all holding our breath for.

Posted: Wed Jan 22, 2020 5:55 pm

Tdem wrote:

When are you making a titanium frame? That's what we're all holding our breath for.

I realise that you maybe are not expecting an answer like this......
But a Titanium frame is being built but not in the US but here in NZ
Special tubing has been purchased and all the brackets and pressings are being resized and 3D printed and once completed will be welded together.
This is not easy as it must done inside a habitat to be oxygen free.

Captain

CB1100F Joined: Jun 18, 2006 Posts: 2511 Location: UK

Captain wrote:

I know this is headless's thread but as its about Titanium I thought I might add to it.

Some of you have already received the improved shift detent and read that it was copied directly from our own and as developed in our Superbike.
Well this is it, the original. It is identical in shape and form but is made from Titanium and further lightened which explains the holes. Further to all this as that I am about to undertake the same for everything else in the picture.

Captain

Interesting on the shift detent looks like the neutral position has been filled in and ony a small V for the neutral location, obviously helps with quicker 1-2 and 2-1 gearchanges?
Also a small ball bearing on the selector locater

Keith

Posted: Thu Jan 23, 2020 12:28 am

The Titanium frame moves things up several notches. Probably 20lbs lighter at least. That is huge!

Posted: Mon Jun 08, 2020 8:06 pm

I finished the gun drill setup for my lathe so I'm now able to drill deep holes.

first hole

Posted: Mon Jun 08, 2020 9:09 pm

Great!

Posted: Tue Jun 09, 2020 1:02 am

Nice Cary, I really need to do that. I already have a pump on my lathe. Just need the other setup. I'll be in touch.

Posted: Wed Jul 22, 2020 6:09 pm

The gun drill setup works great. I was able to drill a 17mm hole 300mm deep in about 15 minutes.