Squeezing out more mpg from the suzuki

[saturndude]

Oops I meant 1t bio get drive sprocket, but I haven't installed it yet. Looks like it will be fairly soon as I noticed my chain has quite a bit of play.

This tank I've been tucking any time above 40mph so well see where that gets me.

The tires, I think they were like $40-50 each. They seem to be lasting ok

[darcane]

Originally Posted by saturndude

Oops I meant 1t bio get drive sprocket, but I haven't installed it yet. Looks like it will be fairly soon as I noticed my chain has quite a bit of play.

This tank I've been tucking any time above 40mph so well see where that gets me.

The tires, I think they were like $40-50 each. They seem to be lasting ok

How many miles on the chain? If it is getting worn, you'll want to change that too. As it wears, the chain gets longer and will chew up sprockets quickly.

[saturndude]

Yikes, I don't know! It's the one it came with, so at least 10k miles, could be original at almost 50k miles! I think I have the new chain in the garage with the new sprocket. Looks like I have my weekend planned out for me.

[saturndude]

And I don't know how to sync carbs. I only have delt with single carb setups or fuel injection.

[user removed]

A simple way to synch carbs.

Back off the idle stop adjustment screws so they are not in contact with the linkage, where you can put a feeler gauge in both and measure the same clearance without moving the idle stop levers.

Adjust the screw that connects the pirmary linkage (fixed) to the secondary linkage (adjustable), so you get the same measurement at both idle stop screws. This measurement will be greater that your initial measurement but should be exactly the same from one to the other carb. Add feeler gauge leaves until you get both sides identical.

regards
mech

[thomason2wheels]

Originally Posted by renault_megane_dci

Had you had an injected SV (from 2004 ?) I would have suggested to run it on a single cylinder with the deactivated cylinder forced at WOT to reduce pumping losses.

Even better, to Atkinson it by delaying intake cams two tooth (involved quite a lot ...).

But since it is not injected, it is much more hassle and expense ...

Using the Elite to work is not an option, is it ?

Would the engine even start and run with the intake cam retarded that much?

[PaulB2]

I had a 1999 Triumph Adventurer (with the 885cc engine), I got 51mpg from that with average driving (but no traffic jams). First thing I did, I tossed the stretched oring chain and got a non-oring one which I think helped a fair amount due to the low friction. I added a home-brew chain oiler (total parts cost was about $15 IIRC) which kept the chain looking nice. The bike might have been a bit oily in back but I didn't care.

Keep in mind even if you have to replace a non-oring chain twice as often as an oring one, you are probably still ahead in dollar terms.

Don't worry too much about your fuel cost, just enjoy your SV. You are still getting double the mpgs that everyone else out on that road is getting, maybe more.

[renault_megane_dci]

Originally Posted by thomason2wheels

Would the engine even start and run with the intake cam retarded that much?

Camshaft sprockets are usually 36 tooth so a teeth sprocket delay is 10°.

The inlet advance before top end center is usually 30° and delay after bottom end is 50° ish.

Atkinson timing engine as seen in a Prius is 15° to 0° advance and 90° to 105° delay, thanks to a cam phaser.

That being said, there is a thread in the Motorcycle section wich name is "Atkinsoning motorbike engine" where one guy tried a one teeth delay on a big Kawi engine to no avail and the conclusion was the carbs can't cope with back flowing, which is the whole idea of the Atkinson cycle.

So far it is just a maybe that an injected engine would do better in this respect ...

[Grant-53]

[/IMG]
This is a tail piece I designed for my city bike.

[saturndude]

The image doesn't show I'm interested in seeing what you came up with.

Also, how do I get my fuely to show up in my sig like that?