Modifying frames?

[Voltaire]

No idea what that last pic is as it won't open for me.
Those frames are as flexy as fuck. I put a Kohler V twin in one for Eurodave down here. Build thread somewhere on Dotheton forum if anyone's interested.
That frame is basic as - which is Helmut Dahne to a Tee - he's the original KISS type.

The one I'd look for info on is the BMW USA bike which had a frame built by Rob North in California. Very like the triples frame, not hard to do.

FWIW, the top tubes on that one of Helmut's look like 1 1/8in OD - and i can hand bend that in 2mm wall on my bender. Mild steel is all you'd need.

Thanks for that info, pic showed a Tonti Guzzi frame lurking in my shed. I'm leaning towards the Dahne one as it is the stock swing arm and steering head but with top rails.

I like the guy, builds the bike races at the TT

Might not get around to building it for a while but it sure looks cool.

Did you bother to read the original post?

Looks like a simple way to solve most of the Airhead flex problems - a couple of nice straight top rails like a featherbed copy should have, triangles and stuff. You'd need to have extra length on the bends and cut to length, otherwise as you say, looks simple to replicate. You could tweak the head angle while you're there, stretch it out for some longer forks and higher bars for a more relaxed stable riding position - cruise past those CB350's in style. I don't know what sort of tube is best.....me, I'd just use black tube and paint the whole thing in Sampson High Gloss.

Yes it really is just the Featherbed frame that BMW half copied. Sampson Hi gloss...." sure thing"
beating CB 350's....unlikely as those guys go hard.

It's only the bodywork and that's easy to change

I'd rather go Krauser anyway

I could ask Maxheadroom for his Krauser heads and get my mate to scan them and print out a plug for a mold.....

[Kickaha]

I could ask Maxheadroom for his Krauser heads and get my mate to scan them and print out a plug for a mold.....

Give them to Nev and get him to knock em out on the CNC because it'd be that simple

[husaberg]

The heads have problems and you need the correct pistons for them as well, there was a new set on Ebay last year

I have all the writeups I can find from that time

Do you have this one.

[husaberg]

The US superbike as Kicka Mentioned was monoshocked.

[Voltaire]

I had two set of Krauser heads years ago in the UK as they fell out of favour, I however did not have the pistons as it was pre internet and info was hard to get, flogged them and went twin plug and 40mm Dells , 81 style clutch on my R100 RS...transformed it to something less sluggy.
Krauser heads make nice shelf candy.

[Kickaha]

Do you have this one.

No, but there is nothing new in that one

[husaberg]

No, but there is nothing new in that one

Ya still never had it. The bike you mentioned was the one above.
No wonder Krauser was doing ok it says he sold 1800 bikes from one shop in 6 months

[Voltaire]

The US superbike as Kicka Mentioned was monoshocked.

I think they has a choice of mono of twin shocks as there were protests.

Udo Gietl was the man behind the R90s's, pretty amazing for touring twin. Pissed Cook Neilson off....accused them of cheating... Germans would never do that

[Kickaha]

I think they has a choice of mono of twin shocks as there were protests.:

The story goes the rules say the shocks can be relocated, so he relocated one to a shelf in the workshop and made it a mono

[Grumph]

Kicka get a RZ350 frame. North frame or not that bike is Ugly i see why the OP wanted to do the imola rep.

Funny story, the RZ frame is a Rob North copy....He did a frame for Roberts for a TZ, expecting more orders...It found it's way to Yamaha and the next year's TZ had an almost identical frame. The RZ is pretty much the same frame with road fittings....North always felt ripped off by that one.

[husaberg]

Funny story, the RZ frame is a Rob North copy....He did a frame for Roberts for a TZ, expecting more orders...It found it's way to Yamaha and the next year's TZ had an almost identical frame. The RZ is pretty much the same frame with road fittings....North always felt ripped off by that one.

I think he felt a bit hard done by all around.
Likely rightfully so in some instances such as his name.
If he felt ripped off with the Yamaha he better look away from quite a few early 80's Hondas as well.
The public even used the lowboy and high boy monikers for the TZs
http://www.caferacer.net/forum/attac...t250f-2082.jpg
http://raresportbikesforsale.com/wp-.../MVX_250_3.jpg

[husaberg]

I think they has a choice of mono of twin shocks as there were protests.

Udo Gietl was the man behind the R90s's, pretty amazing for touring twin. Pissed Cook Neilson off....accused them of cheating... Germans would never do that

Have you had a look at a k75 /k100 Frame

Rake, trail
27.5°/3.98 in (10.1 cm)
Wheelbase
59.7 in (152 cm)[9]

[trustme]

Are you going to do this yourself or get some help. I believe James Simpson Engineering in Albany might be able to help. James is a good bloke , did some frame repairs to Winston, does a bit of frame work. No doubt you will have a plan

[Grumph]

By the time you've cut all the odd bits off the K frame, then added the bits you want, it's quicker - and ultimately less work to build from scratch.
Saves the time you'd waste too removing all the factory ID from the donor frame....

[swarfie]

Saves the time you'd waste too removing all the factory ID from the donor frame....

And renumbering it