What engine?

garth · World Chat Champion Joined: 15 Dec 2004 Karma :

Hi

First of all I am fully aware I'm an idiot.

I'm going to change the engine in the goose. I want something a bit pokier. Like a 500 2T or similar.

I was thinking CR500, but don't they vibrate like buggery?

So basically just want to know what peoples knowledge of compact, powerful 2T singles there are around.

//Discuss
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Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Doing this would be a hell of a lot of work (and with no lights, etc, using a CR500 engine).

Think the Goose uses the engine as a stressed part of the frame which will make things more difficult.

All the best

Keith
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thegubner · World Chat Champion Joined: 25 Mar 2007 Karma :

Was there a 500 gamma?

That was 2 stroke wasn't it?

I heard they were loads of fun if i am thinking of the right thing.

Blau Zedong · Banned Joined: 26 Jun 2006 Karma :

map · Mr Calendar Joined: 14 Jun 2004 Karma :

IMO sounds easier to play around with the engine bits, pistons, carb jetting, exhaust, etc. rather than an engine swap.
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garth · World Chat Champion Joined: 15 Dec 2004 Karma :

I have the know how and tooling to do so.

Was thinking about building a cradle.

The only major mounting point for the goose engine is the rear. This goes into a cast piece of ally which is then bolted to the steel trellis frame. The front of the engine is bolted to this also, and there is one final top engine mount.

I thought I could make a cradle running from the rear engine mount (in the cast ally) to the front mount on the steel trellis, and go from there.

Think it's do-able.
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NSR Mick · World Chat Champion Joined: 26 Jun 2005 Karma :

Of course it's do-able go for it. Thumbs Up

CR500 would be the best bet for performance. If you want to retain a charging system etc maybe a CRM250 engine would be the one to go for although you wouldnt be gaining much performance wise.
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Wafer_Thin_Ham · Super Spammer Joined: 18 Nov 2005 Karma :

How long do you want it to last between services?

Some of the MX 4 stroke single 400cc motors could be pretty good.

Aprilia SXV550 motor. Razz

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garth · World Chat Champion Joined: 15 Dec 2004 Karma :

Big_Ham

There's not too much space in there, that's why I'm thinking 2T single.

With regards to the charging front, I found someone who has done a cr/derbi and they fitted a lighting coil, https://dspace.dial.pipex.com/prod/dialspace/town/pipexdsl/s/asgq17/CR5/page2.htm

Hmm.
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stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

I wonder if a DRZ400 motor would fit?

Ought to be suitably insane.
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mrtEE · World Chat Champion Joined: 12 Sep 2005 Karma :

Pete. · Super Spammer Joined: 22 Aug 2006 Karma :

Iwouldn't fit a 2T crosser engine they just aren't suited to road-riding. Sure it would be a mental-case but at the expense of an extreme maintenance schedule.
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G · The Voice of Reason Joined: 02 Feb 2002 Karma :

I would consider some of the enduro 2strokes rather than mx - these often come with all the charging stuff etc for a start and are a bit more reasonable on the road.
KTM EXC range (don't do it anymore, but there was a 380cc 2 stroke if I remember) Gas Gas EC range. KTM did an 'EXG' 250 which was autolube.

On the 4 stroke side, Husaberg 650 or similar to keep the weight down (probably less than your 350); can get a 750cc kit for the Hussy' that actually makes it more reliable!

Or go for a Maico 685cc 2 stroke if you could actually find one Smile

.

Are you sure the Goose frame can take it; maybe you should look at a new frame at the same time Razz

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dougon2wheels · Nitrous Nuisance Joined: 28 Feb 2006 Karma :

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Madmanx · World Chat Champion Joined: 22 Dec 2007 Karma :

Rd 500 lc engine if you can find one. Cool

or Suzuki Gt 500
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Blau Zedong · Banned Joined: 26 Jun 2006 Karma :

sickpup · Old Timer Joined: 21 Apr 2004 Karma :

G · The Voice of Reason Joined: 02 Feb 2002 Karma :

Madmanx · World Chat Champion Joined: 22 Dec 2007 Karma :

Blau Zedong · Banned Joined: 26 Jun 2006 Karma :

I know what a 500LC and a GT500 look like FFS!!!!

Neither have a powerplant which is suitable for transplant into the waif like SG350 goose chassis.
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Wafer_Thin_Ham · Super Spammer Joined: 18 Nov 2005 Karma :

garth · World Chat Champion Joined: 15 Dec 2004 Karma :

Matty21 · Nova Slayer Joined: 10 Dec 2007 Karma :

what about a 350 lc ?
or A kr1 Wink

250 2t

ktm 660, just some suggestions
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G · The Voice of Reason Joined: 02 Feb 2002 Karma :

Note the comment about the derbi 50cc conversion - ok we're talking a lot more of a difference in power there, but it's definitely something to bare in mind.

From what I remember, they couldn't work out if the frame broke after or before the impact, but he had definitely been told by many people that what he was doing wasn't a great idea.