Search found 111 matches

by ChrisACT
Wed May 22, 2013 9:29 pm
Forum: Build Diaries
Topic: Greetings - 100cc M/F for 2014
Replies: 48
Views: 26868

Re: Greetings - 100cc M/F for 2014

A custom expansion chamber of my own design.

It's taken a couple of years iterating through the sim to get it right although until I get it running on a dyno, I won't know how "right" it is.
by ChrisACT
Wed May 22, 2013 9:05 pm
Forum: Build Diaries
Topic: Greetings - 100cc M/F for 2014
Replies: 48
Views: 26868

Re: Greetings - 100cc M/F for 2014

Here's a chart from my simulation software. http://members.iinet.net.au/~cjbrooks@grapevine.com.au/images/LSR_302m.jpg The porting here is pretty wild and it's on methanol to boot. I'm not sure 35.5HP is really possible (ie sustainable) with this engine without it being a grenade. The real issue her...
by ChrisACT
Tue May 21, 2013 10:52 pm
Forum: Build Diaries
Topic: Greetings - 100cc M/F for 2014
Replies: 48
Views: 26868

Re: Greetings - 100cc M/F for 2014

mate, never underestimate the information gathered from a dyno, sure, thay all read different, but,, always use the same dyno and work with what it tells ya,, sometimes changes to your machine "feel" right, dyno readings will confirm, :wink: ,, for example, i made a new exhaust system and ran it at...
by ChrisACT
Tue May 21, 2013 10:19 pm
Forum: Build Diaries
Topic: Greetings - 100cc M/F for 2014
Replies: 48
Views: 26868

Re: Greetings - 100cc M/F for 2014

My project is not going as quickly as I'd like. Busy with other stuff and too much faffing about instead of working in the shed. I'm planning to run methanol. I also anticipate difficulty testing it. I will run it on a dyno before I take it to the salt just to get some idea of what I've got to work ...
by ChrisACT
Tue May 21, 2013 4:56 pm
Forum: Build Diaries
Topic: Greetings - 100cc M/F for 2014
Replies: 48
Views: 26868

Re: Greetings - 100cc M/F for 2014

Thanks for the welcome Project100. What class are you running Suzi in? Gasonline or Fuel? Have you run before or is this your first trip to the salt like me?
by ChrisACT
Wed May 08, 2013 11:03 pm
Forum: Build Diaries
Topic: Vespa Dry Lake Racer lives...
Replies: 251
Views: 138104

Re: Vespa Dry Lake Racer lives...

Can't see any blowers but there does seem to be a lot of top end transplants in this lot.


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by ChrisACT
Fri Apr 05, 2013 11:29 pm
Forum: Chassis, Suspension and Saftey
Topic: MOTOR CYCLE SFI HEADSOCK
Replies: 19
Views: 11061

Re: MOTOR CYCLE SFI HEADSOCK

Chris, I understand. I don't wish to be petty either. I think this discussion is quite serious. I have marshalled at circuit racing events and I know that everyone does their bit and wants only the best outcomes for racers. I'm not suggesting that they shouldn't or don't care, or shouldn't do their ...
by ChrisACT
Fri Apr 05, 2013 10:34 pm
Forum: General Information
Topic: 200 naked
Replies: 18
Views: 11352

Re: 200 naked

The 350 this year went 20mph faster than it did as a roadracer with no body work. the roadracer went 120 with no body work and 129 with I went 141 on the gps track. I'm hoping the same improvement will happen at faster speeds. My mate Rod is going to do the body which will be similar to the 80 that...
by ChrisACT
Fri Apr 05, 2013 10:00 pm
Forum: Chassis, Suspension and Saftey
Topic: MOTOR CYCLE SFI HEADSOCK
Replies: 19
Views: 11061

Re: MOTOR CYCLE SFI HEADSOCK

As Gary stated, there is nothing to stop anyone wearing a head sock if they deem it necessary. The fact that pretty much nobody does should tell you how the riders feel about it. So why make it mandatory? Is the suggestion that we are all, as a collective, too stupid for our own good? MotoGP riders ...
by ChrisACT
Sun Mar 24, 2013 9:57 pm
Forum: WANTED
Topic: ceramic coating
Replies: 22
Views: 14795

Re: ceramic coating

These guys have an ebay store and post worldwide. http://www.ebay.com.au/itm/Techline-Cermakrome-Ceramic-Metal-Coating-180ml-/400445564234?pt=UK_Car_Parts_Vehicles_Automobila_ET&hash=item5d3c6a654a&_uhb=1#ht_1843wt_1200 http://www.ebay.com.au/itm/Techline-Turbo-Blue-Exhaust-Coating-Thermal-Barrier-1...
by ChrisACT
Sun Mar 24, 2013 9:51 pm
Forum: Build Diaries
Topic: It lives
Replies: 304
Views: 135156

Re: It lives

Is the new rod heavier? Will you have to re-balance the crank?
by ChrisACT
Sat Mar 23, 2013 11:40 pm
Forum: WANTED
Topic: ceramic coating
Replies: 22
Views: 14795

Re: ceramic coating

I got a quote to do various bit of my 2 stroke single engine from http://www.performancecoating.com.au/ They're in Sydney (Rydalmere). Piston crown $25+ gst Combustion chamber 55+gst Exhaust duct 20+ They also do thermal dispersant ceramic coatings (good for radiators, intercoolers and air cooled cy...
by ChrisACT
Thu Mar 21, 2013 7:53 pm
Forum: Build Diaries
Topic: APS/G 250
Replies: 257
Views: 103481

Re: APS/G 250

I bought some cheap bathroom scales that go up to 220Kg (yes you can get them) - so I could measure the balance. The scary thing is that I need 75kg on the front to make it 50/50! Pete you could do the same just to quantify what you are doing. I think also if you have a few people you can do it at ...
by ChrisACT
Thu Mar 21, 2013 7:48 pm
Forum: Engine Development and Performance
Topic: 2 strokes a can of worms.
Replies: 38
Views: 19570

Re: 2 strokes a can of worms.

A guy on another forum I visit just got his Turboed BIG Block RZ Yamaha going. Cant get traction on the dyno. Heres a video of one of its first runs. https://www.youtube.com/watch?v=v8zGov8Fn7U :D Methanol and turboed maybe?? :shock: Dave HAHAHA!!! That's just awesome. What could possibly go wrong?...
by ChrisACT
Thu Mar 21, 2013 5:16 pm
Forum: Engine Development and Performance
Topic: 2 strokes a can of worms.
Replies: 38
Views: 19570

Re: 2 strokes a can of worms.

Thanks Chris for the info .......I have no idea about what you dirt blokes race ........ never really been interested in chook chasers.... from what you are saying I better check out your weapons. :) The PCRA Motolite and Superlite classes had quite a few motocross and enduro engines in them (YZ85,...