ESE's works engine tuner

[kel]

So who is it then. Top effort.

That would be Brendan on his KE/RG hybrid now housed in an old RG250 chassis (well going by the bike number anyways).

[F5 Dave]

yep, strike one up for us old fat blokes!

[richban]

That would be Brendan on his KE/RG hybrid now housed in an old RG250 chassis (well going by the bike number anyways).

Thats funny I always thought he rode like a pansy flower lawn blows sort of sissy man.

[2T Institute]

I am not at liberty to post the drawings. But you may find some pics here: http://www.simson-rennteam.de/

Thanks for that a load of inspiration there. I see from the youtube clip it gets along nicely. Though the gearbox seems to do it a bit tough on the downshifts.

http://www.youtube.com/watch?v=gQKXm...eature=related

[timg]

Thats funny I always thought he rode like a pansy flower lawn blows sort of sissy man.

Haha You'll be getting the Bren bash at the BOB

[husaberg]

Thanks for that a load of inspiration there. I see from the youtube clip it gets along nicely. Though the gearbox seems to do it a bit tough on the downshifts.

http://www.youtube.com/watch?v=gQKXm...eature=related

He is practically able to hold inch perfect lines nearly every time and is seemingly able to dive up the inside at will. Clever and sorted.
Although some of the backmarkers may not be so polite in NZ.

[cotswold]

yep, strike one up for us old fat blokes!

on a smokie

[Kickaha]

Not even remotely bucket related but a cool two stroke all the same and up for sale




http://www.ozebook.com/compendium/suzipics/sparton.html

[Yow Ling]

Something flash turned up in the post today



its the rarest of rare bucket parts, an exhaust nozzle for the rgv100, thanks Wob its way more exotic than I imagined,

There were 2 in the packet , I had a visitor from Auckland today , now theres only 1 in Chur chur

[husaberg]

Not even remotely bucket related but a cool two stroke all the same and up for sale

Barry Hart had a few "world beaters" like this was one. He had a bit to do with Armstrong as well as the "silver dream racer" .
The designs were always seemingly over hyped up by a British media starved for success. Which was a shame because they were decent if not that innovative designs OK he borrowed a fair bit.
I seem to remember there was a much more successful Dutch 3 cylinder TZ350 and a home build three from the south island Grumph has mentioned.
I have an article that will will post when i can be arsed looking for it.
http://yorkshireferret.blogspot.co.n...-and-more.html

http://armstrongfactoryracing.com/history.html

Armstrong Motorcycles began in the late 70's when Armstrong Industries bought up CCM (Clews Competition Motorcycles) then later, Cotton Motorcycles and Barton Engineering. These smaller companies were amalgamated to form the best motorcycle engineering brains and knowledge at the time this side of Japan. Terry Wilson's Cotton had developed a super fast 250cc machine, initially produced with a one-off L-twin 250cc Rotax engine which was especially built for Cotton. This engine was developed by Rotax, and went on to become the infamous Type 256 inline twin. The first CCM Armstrong 250cc racers were essentially rebadged Cotton's, with a more "TZ-esque" frame designed by Mike Eatough, incoporating a vertical rear shock design.
Rotax 256 250cc engines were used initially but in 1981 an improved designed was developed in house by Armstrong Technical Director, Barry Hart (ex-Barton Engineering) including horizontally split crankcases, improved porting, cooling and individual cylinder heads. Initially developed as a 350cc the CM36 engine was used in both 250 & 350cc guises for the works machines. Several variants were produced, with the last model being updated in 1983, which featured 180 out of phase cranks, instead of the usual counter rotating cranks with both pistons rising and falling at the same time

Phoenix (silver dream racer) wow never realized the Buell connection later.

http://www.flickr.com/photos/85689738@N00/5713273745
http://www.flickr.com/photos/85689738@N00/5713261305

[TZ350]

Ok ... Chambers bike is lighter than mine.

Checking the relative weights of the wheels, as spoked wheels are supposed to be lighter.

Front wire wheel 9.0kg

Rear wire wheel 9.5kg

Front FZR wheel 9.0kg

Rear FZR wheel 12.0kg

FZR sprocket carrier 2.5kg

Not as much difference as I had expected. Only 2.5kg and that was all in the back wheel. How to loose the equivalent of the sprocket carrier, use a wide front from some other bike and fixed alloy sprocket perhaps. And replace the rear caliper with something lighter.

[husaberg]

Ok ... Chambers bike is lighter than mine.

Checking the relative weights of the wheels, as spoked wheels are supposed to be lighter.

Front wire wheel 9.0kg
Rear wire wheel 9.5kg

Front FZR wheel 9.0kg
Rear FZR wheel 12.0kg
FZR sprocket carrier 2.5kg

Not as much difference as I had expected. Only 2.5kg and that was all in the back wheel. How to loose the equivalent of the sprocket carrier, use a wide front from some other bike and fixed alloy sprocket perhaps. And replace the rear caliper with something lighter.

From Memory Nudemetals said a long time ago that FZR400 front wheel (possibly other Yams as well) takes a DT175 sprocket direct.

You can always do what I did and use a 3" x 17" FZR (400?) front rim on the rear.
Sure you don't have a cush-drive (rubber blocks) but not that important on a bucket and I found that DT175 sprockets fit perfectly onto the disc bolt pattern.
Only issue I found was it was a tight squeeze onto the swingarm of the RGV150 frame but that's the frame's fault !!!

(I use a 3MA TZR front rim on the front).

The ones i chose are Well Honda
HONDA CBR 400 NC23 FRONT Wheel 3.5X17
HONDA CBR 250R MC19 2.5X17
I think the 3.5 (NC23) is actually lighter than the 2.5 (MC19). The later 6 spokes are lighter than my 3 spokes i think.

[TZ350]

Geee those bare wheels don't weigh much.

Std RS front 6 lbs or 2.7kg and rear 7 lbs or 3.2 kg.

Conversion assistant http://www.convertunits.com/from/lbs/to/kg

I weighed a set of RS wheels with disk tire sprocket etc.

RS complete Front wheel 8.0kg complete Rear wheel 9.5kg

compaired to:-

Wire complete Front wheel 9.0kg complete Rear wheel 9.5kg
FZR complete Front wheel 9.0kg complete Rear wheel 12.0kg


Complete RS swing arm 3.5kg and FZR swing arm 4.5kg.

Although I am not that convinced about the accuracy of bathroom scales for measuring anything, they at least give an indication of the wheels relative weights.

I might have a FZR400 front, I will dig it out and have a look.

[husaberg]

Geee those bare wheels don't weigh much.

Std RS front 6 lbs or 2.7kg and rear 7 lbs or 3.2 kg.

Conversion assistant http://www.convertunits.com/from/lbs/to/kg

I weighed a set of RS wheels with disk tire sprocket etc.

RS complete Front wheel 8.0kg complete Rear wheel 9.5kg

compaired to:-

Wire complete Front wheel 9.0kg complete Rear wheel 9.5kg
FZR complete Front wheel 9.0kg complete Rear wheel 12.0kg


Complete RS swing arm 3.5kg and FZR swing arm 4.5kg.

Although I am not that convinced about the accuracy of bathroom scales for measuring anything, they at least give an indication of the wheels relative weights.

I might have a FZR400 front, I will dig it out and have a look.

down side of cast wheels on a supermoto?
Note this compares std size which i think is 3 and 4.5 inchx17
http://http://motard-supermoto-wheels.sportsontheweb.net/index.htm
Aren't cast wheels a lot heavier? The common complaint is extra weight with cast wheels, but with CBR250 wheels (CBR250R & CBR250RR specifically) this is not true. We've weighed the CBR wheels, fully kitted out with tyres, discs and sprocket, against typical quality motard spoked wheels using Talon hubs and Morad rims. The results?:
CBR250r wheels complete with disks tires spockets etc .
Front spoked wheel: 11.1 kg 3-spoked cast wheel: 10 kg 6-spoked cast wheel: 10.5 kg
Rear spoked wheel: 13.1 kg 3-spoked cast wheel: 13.8 kg 6-spoked cast wheel: 13.9 kg


A std ZXR750 front wheel from the 90's is 4.5 KGs (bare weight)
Most of the weight saving from aftermarket wheels (up to 46% in the article i have here) is that most weight saving come from the rear with only approx 1 kg able to be lost off the front. Compared with a 4.0kg wheel vs 7.64kg oe for the rears.

SO it looks like my gut feeling of the 3 spoke vs the 6 spoke is wrong if at least on these the 3 spoke is lighter WTFIUWT
Although it may be because my front is a MC19 and is not hollow spoked?

[richban]

Ok ... Chambers bike is lighter than mine.

Checking the relative weights of the wheels, as spoked wheels are supposed to be lighter.

Front wire wheel 9.0kg

Rear wire wheel 9.5kg

Front FZR wheel 9.0kg

Rear FZR wheel 12.0kg

FZR sprocket carrier 2.5kg

Not as much difference as I had expected. Only 2.5kg and that was all in the back wheel. How to loose the equivalent of the sprocket carrier, use a wide front from some other bike and fixed alloy sprocket perhaps. And replace the rear caliper with something lighter.

I reckon bite the bullet and get some proper wheels.




Front 7kg

Complete rear with sprocket carrier 7.2kg





If you had some of these you would lose just under 7kg. The Honda ones weigh the same.