Race chassis

[husaberg]

Here's the patent document for Peter Williams "Shell" frame concept

http://www.eurospares.com/graphics/c...O0189916A1.pdf

cheers,
Michael

Peter was a very clever man, as was his father.
Both were responsable for a lot of the final development work done at Norton and AJS repectively.
I can't remember who peters co rider was at the time (likely Croxford) Peter was always saying to him to let him fettle his works Norton like his, The co-rider thought it was not needed untiil he actually tried Peters bike and found it to be a few seconds a lap quicker.
Peter actually went and worked for Dr Joe for a while after Norton to learn 2T's.

[Michael Moore]

If any of you have Tony's chassis software he's just released an upgrade which is a free download for owners of the older versions. You should be able to replace the old version and have the existing unlock key continue to work without needing to request a new one:

See http://www.tonyfoale.com/suskin/Update1_65.pdf

For those that already have the software just search your emails for the
original download instructions AFTER reading the above. It contains
important info. about the update. For anything else please contact me
directly.

Regards

Tony Foale

[Grumph]

Talking to Mike Sinclair a couple of times over the last two days. Asked a couple of questions as you do...
I'd read that when team Roberts went to the frame builder for the Modenas frame they were very specific about exactly what torsional stiffness they wanted. So asked where that came from...Plenty of measurements of existing frames...
Mike pulled out a pic of an alloy beam frame with holes cut all over. Answering the question, what happens if we do this ? How much effect on stiffness does this bit have ? Interesting. Paul Treacy was in on the discussion too, currently working on KTM's new bike for MotoGP.

I remembered to ask (for Husa) about the "adding weights to the Britten" story. No confirmation, but they both laughed and said that you got 3 weights with your works Yamaha. If you had patter, you could insert them into hollow spars in various places until the patter went away....pragmatic.

[husaberg]

Talking to Mike Sinclair a couple of times over the last two days. Asked a couple of questions as you do...
I'd read that when team Roberts went to the frame builder for the Modenas frame they were very specific about exactly what torsional stiffness they wanted. So asked where that came from...Plenty of measurements of existing frames...
Mike pulled out a pic of an alloy beam frame with holes cut all over. Answering the question, what happens if we do this ? How much effect on stiffness does this bit have ? Interesting. Paul Treacy was in on the discussion too, currently working on KTM's new bike for MotoGP.

I remembered to ask (for Husa) about the "adding weights to the Britten" story. No confirmation, but they both laughed and said that you got 3 weights with your works Yamaha. If you had patter, you could insert them into hollow spars in various places until the patter went away....pragmatic.

I read a real funny story the other day about KR-JR world title wining RGV500
It turns out it was made as Yamaha YZR500 as Suzuki would let them. right down to exhaust dimensions.
When they first tested the Suzuki they had a frame which gave no feed back ,so they asked if they could have a less stiff one (it was worse) they asked if they had either tested the frame stuiffness suzuki said No, So Willings had it tested the "less stiff" frame and found it was actually 15% stiffer.

[husaberg]

Found it on the web
Saved having to scan it
Note the number of frames they had made up until then.

[Frits Overmars]

Found it on the web. Saved having to scan it.

I finally read the lot. Now can you please post some aspirin?

[husaberg]

I finally read the lot. Now can you please post some aspirin?

Okay then

https://www.kiwibiker.co.nz/forums/s...-Kevin-Cameron
https://www.kiwibiker.co.nz/forums/s...itish-Euro-etc

[Frits Overmars]

Okay then.
https://www.kiwibiker.co.nz/forums/s...-Kevin-Cameron
https://www.kiwibiker.co.nz/forums/s...itish-Euro-etc

Ah, now you're posting scans that are actually legible. Good stuff to get me through the holidays. Thanks Husa.
Which reminds me: Happy New Year to all Kiwibikers .

[husaberg]

Ah, now you're posting scans that are actually legible. Good stuff to get me through the holidays. Thanks Husa.
Which reminds me: Happy New Year to all Kiwibikers .

Oh sorry i never checked that one. I thought you meant all the attachments in the thread.
That one was actually taken from the web, as i was being lazy.
To late for you, but I will replace it later, with one from the same mag i have here.

[husaberg]

There is going to be some cross over to the foundry and oddballs thread with these.
no details but it was i think for a TZ.

[husaberg]

Again i think for a tz

[husaberg]

The others that didn't fit
Mike Moore identified as Offenstadt.

[husaberg]

Shepard TZ

[Michael Moore]

The monocoque and USD fork is Offenstadt stuff.

The front damper mount on that TZ plate frame is a classic example of "don't put a load in the middle of an unsupported beam". I hope the plan was to add something to brace that against the steering head.

[husaberg]

The monocoque and USD fork is Offenstadt stuff.

The front damper mount on that TZ plate frame is a classic example of "don't put a load in the middle of an unsupported beam". I hope the plan was to add something to brace that against the steering head.

Cheers i should have picked that. Not that i could have spelled it.
re the plate frame, I missed that, it looks like a very long 8mm bolt as well.
That all cast Shepard frame sure looks beautiful through.