Oddball engines and prototypes

[husaberg]

Sad to read today the John Trease had died in OCT

For those unaware just how fast his classic racer Harley was
have a look here.
In later years he obviously tidied up the bike got rid of the small peanut tank.


He also build many other bikes including one that holds a Bonneville record

This is how it looked in the early years


Later on

[guyhockley]

Sad to read today the John Trease had died in OCT

For those unaware just how fast his classic racer Harley was
have a look here.
In later years he obviously tidied up the bike got rid of the small peanut tank.


He also build many other bikes including one that holds a Bonneville record

This is how it looked in the early years


Later on

I was unaware, full stop. Goes a bit! One of the world's fastest featherbeds? The racer in the video has MPS-PF 1350 on the fairing, so I presume that refers to the LSR class.
Couldn't find much online, but Trease Race Engineering have a minimal Facebook page and there's a video on there of a custom framed,girder forked(!?), V-twin that he rode round Australia and raced at Lake Gairdner...

[husaberg]

I was unaware, full stop. Goes a bit! One of the world's fastest featherbeds? The racer in the video has MPS-PF 1350 on the fairing, so I presume that refers to the LSR class.
Couldn't find much online, but Trease Race Engineering have a minimal Facebook page and there's a video on there of a custom framed,girder forked(!?), V-twin that he rode round Australia and raced at Lake Gairdner...

His son carries on Trease engineering.
If i come accross the early write up i will post it.
Most versions had a beefed up sportster Frame and doubled up sportster drums.
Alcohol fuel of course and float bowls of a strongberg carb
It certainly did go hard to imagine a same class bike reeling them in faster.
I see Patrick Godet has also died.

[WilDun]

Not quite how I remembered...

http://www.t20suzuki.com/racing.htm#TZcrank

Now if only I had all that info in the late sixties when I rode my T20! …………. then on the other hand, remembering the spindly forks and the fast fading drum brakes and banana frame, I'd probably be dead by now …….. look what happened to all my namesakes, (not on Suzukis though) - Of course not forgetting Ron Grant and Geoff Perry - they both rode the T20.

[husaberg]

Now if only I had all that info in the late sixties when I rode my T20! …………. then on the other hand, remembering the spindly forks and the fast fading drum brakes and banana frame, I'd probably be dead by now …….. look what happened to all my namesakes, (not on Suzukis though) - Of course not forgetting Ron Grant and Geoff Perry - they both rode the T20.

Mac McDairmid who was a journalist built a T250 and Won the Classic IOM TT on it in the mid 80's it cost about 500 pounds.
It wast particularly classic as it had Benelli 2c forks and brake and a GT250 frame and a later tank off a TDC Yam but it won
Pretty sure i have posted about it before.
I have
https://www.kiwibiker.co.nz/forums/a...hmentid=319909
There are some nice pics of two original TR250 there as well.
Steve Roberts i understand has made a fair few Replica frames
But most here used to add the curved loops Suzuki should have put in, in the first place.

[pete376403]

His son carries on Trease engineering.
If i come accross the early write up i will post it.
Most versions had a beefed up sportster Frame and doubled up sportster drums.
Alcohol fuel of course and float bowls of a strongberg carb
It certainly did go hard to imagine a same class bike reeling them in faster.
I see Patrick Godet has also died.

Point of Order Mr Speaker! - Amal GP or SU carb float chambers (Strombergs are more like a CV carb with integral concentric style bowls)


And Patrick Godet??? How will I get my Egli Vincent now?

[husaberg]

Point of Order Mr Speaker! - Amal GP or SU carb float chambers (Strombergs are more like a CV carb with integral concentric style bowls)


And Patrick Godet??? How will I get my Egli Vincent now?

Have a look at the pic the black and white one its off a VC Valient i believe.
The carbs were concetrics
https://www.kiwibiker.co.nz/forums/a...hmentid=301822

God knows what the remote float ones are on the Featherbed one they look massive. they look like fuel filters off a truck.

[pete376403]

All the 6 cyl Valiants I worked on were 2 barrel Carter downdraught carbs (apart from the E49 but that was something special). The float bowls in the coloured pic on second look I am sure are Amal GP. http://amalcarb.co.uk/float-chambers...t-chamber.html

[husaberg]

All the 6 cyl Valiants I worked on were 2 barrel Carter downdraught carbs (apart from the E49 but that was something special). The float bowls in the coloured pic on second look I am sure are Amal GP. http://amalcarb.co.uk/float-chambers...t-chamber.html

looks way big to be normal gp.
Here is one on a manx

but as i said i was talking about the earlier version mounted under the modified concentrics.
one of the carter carbs had a found semi separate bowl.
it might be one of them?

[ken seeber]

His son carries on Trease engineering.

I see Patrick Godet has also died.

Hooser, stop posting all this shit from blokes who are dying/dead...….some of us are immortal you know, hope so anyway...

[guyhockley]

but as i said i was talking about the earlier version mounted under the modified concentrics.
one of the carter carbs had a found semi separate bowl.
it might be one of them?

Concentrics with early Valiant float chambers it says on:

https://hamishcooper.blogspot.com/20...dern.html?m=1#!

[husaberg]

Concentrics with early Valiant float chambers it says on:

https://hamishcooper.blogspot.com/20...dern.html?m=1#!

Great stuff and saves me having to find it. Its a great last line in that.
Appologies So it seems they are carter.I found a nice pic of one of a mustang 6.
https://www.dhgate.com/product/ros-1...421346932.html
The only carter carbs i can remember just looked like a holley.
Actually what were the std not sport one barrell carbs on the old MK1 and escorts.were those a fordmoto autocraft carter copy? All mine only had Webbers.
He mentions modified oiling which to me says mini sump and a reversed oiling which i think the XR750 ran.
All Treases stuff was great aussie bush engine engineering.
Still think those later ones were far to big to be off a GP carb any ideas anyone?
Actually looking at the pic again it almost looks like it has an SU carb on the rear of the Colour Pic
looking at their webpage they do a 3 inch diameter float bowl
plus looking at the tops 99 degree feed it looks to be the same

Hooser, stop posting all this shit from blokes who are dying/dead...….some of us are immortal you know, hope so anyway...

I will text you a warning first if i see any for you Ken

[guyhockley]

We had a V8 two stroke, now here's a V6. In a bike this time.

[pritch]

I don't know if this has been featured before but I'm not checking 173 pages to find out. This is the first photo of this engine that I've come across, lots of pics of bike with fairing, engine pics not so much.

Honda RC116, 50cc twin, 22,000RPM. I'd always assumed this to be a parallel twin, apparently not.

[Grumph]

Perkins in the UK did something very similar in the 50's. Drawing and pics in Irvings 2 stroke book - which i've misplaced.

Friend of my father's had a Perkins 40HP with this setup. Went quite well too.

Found the book. Sorry bout the poor pics. Valves operated from cam rings each side of the center main.
Valve seats are neoprene. Quiet operation, don't corrode during long periods of sitting with valves open - and in the crankcase,not exposed to high heat.