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-   -   how much power? (https://www.horizonsunlimited.com/hubb/yamaha-tech/how-much-power-48693)

bergspre 26 Feb 2010 08:28

how much power?
 
How much power is the XT600E supposed to have? I don't mean in HP, i know its 40hp but how is it supposed to feel when accelerating?

The reason I ask is mine feels a bit slow but ok, when accelerating from 0 as fast I can down the tarmac road it feels on 3rd gear like its "just below the frontwheel-lift-border". Even on 1st and 2nd gear its not wild enough to lift the front wheel.

Its not that i actually want to drive on 1 wheel but looking at all those xt's on youtube it seems that they lift the front wheel as easy as anything.. So that just makes me wonder.

Does your x's acceleration fit my description or? Is it really supposed to be like this as a standard untouched XT600E ?

Jens Eskildsen 26 Feb 2010 10:17

When i bought mine, it took some efford to make the wheel, lift, I dont know if I just got better, or the opened up exhasut and stuff like that really helped.

Ride in 1st. af 3000rpm, close the throttle and wack it wide open. That shoild get you in the air, if not, move further back on the seat and try again.

Other things to help is to use the suspension. You can ride at 4000rpm, use the front brake and make the front end dive, and get down to 3000rpm, as the front rises, wack the throttle up. Or you can give it just a quick wack on thr throttle, the suspension will rise, then "fall down" and as the suspension gets up.....Yep, you gussed it, WOT (wide open throttle)


You can also tighten up year're rear spring so it gets firmer, so it wont absord all the action going on when you try to wheelie :)

Enjoy, and be safe.

G600 26 Feb 2010 11:08

Quote:

Originally Posted by bergspre (Post 278364)
How much power is the XT600E supposed to have? I don't mean in HP, i know its 40hp but how is it supposed to feel when accelerating?

The reason I ask is mine feels a bit slow but ok, when accelerating from 0 as fast I can down the tarmac road it feels on 3rd gear like its "just below the frontwheel-lift-border". Even on 1st and 2nd gear its not wild enough to lift the front wheel.

Its not that i actually want to drive on 1 wheel but looking at all those xt's on youtube it seems that they lift the front wheel as easy as anything.. So that just makes me wonder.

Does your x's acceleration fit my description or? Is it really supposed to be like this as a standard untouched XT600E ?


I know what you mean, from your description I think your bike is like it is supposed to be.

I have a TT600RE, it has the same engine as the XT600E 1990-1995, but a little bigger carbs.

It pulls ok, but feels a little “lazy”. Not much throttle response, probably designed to be “user friendly”. From memory my ’82 XT550 I had many years ago had apprx the same total power, but felt much more awake. It built power more quickly. Maybe the difference is in the ignition mapping.

My bike will not wheelie easily. It will wheelie in first on the throttle alone, but not that easily, I need to be aggressive.

In second gear I need to apply front brake aggressively to compress the forks and when the forks rebound, apply throttle and clutch aggressively. Timing is everything, if I don’t get it right the bike wont wheelie.

In third the bike will not wheelie at all.

Jens Eskildsen 26 Feb 2010 11:45

They have a massive flywheel, so they dont build revs that fast, but hey do crawl along in gear, at idle :)

bergspre 26 Feb 2010 14:36

Thanks for replying :)

It sounds like my xt is "normal" in terms of power :)

Panzer 26 Feb 2010 15:36

It will be right dont worry about it and you can tell it has some torque you're prob just thinking it should be faster because its a 600, if you wind it up through the gears they do move a bit but I wouldnt worry about flipping it :)

carlhenrik_80 28 Feb 2010 21:12

Hello!

I am a proud owner of 2 bikes, XT600-2KF from 1989, and 1990, with total rebuilt engines. My bikes should have about 45hp and with a slipon silencer(as i have on the first bike) there should be about 2-3hp more, i hope. Secondary reduction ratio (Chain drive): 39/15 = 2.600 (2KF).
My eldest bike lifts the front wheel rather easily when I drop the clutch after shifted from 1st gear to 2nd gear. IF Im sitting as straight as possible and rev it rather high in 1st. My wheight is about 75kg. The bike is about 150kg. It does the same after im shifting down from 3rd gear to 2nd again, when I give full throttle and drop the clutch after a little practice! When thinking of the engines lengt of life this last manoeuvre maybe isnt just the best thing to do..
But there isnt enough power to lift when its shifted from 2nd to 3rd gear.

/ Henrik

Pigford 28 Feb 2010 21:46

If the bike is supposed to be 45 bhp (manufacturers figures) allowing for production variation you can realistically expect around 40 bhp.

This figure is at the crank so you'll be looking nearer to 35 bhp at the wheel.

I'd expect an easy wheely in first - just snapping the throttle and a slight pull on the bars.

In second gear, a touch of clutch will be needed - or a bit of a bump in the road and a hefty pull on the bars! These bikes are not thorough bred performance machines, afterall!!!!

G600 28 Feb 2010 21:54

Carlhenrik, is your ’89 the last of the “first” generation of the engines (the engine without the oil line to lube the gearbox, CDI ignition )? And the engine in your ’90 -- has it this oil line for the gearbox and TCI ignition?

If so - How do the two engines compare in power and feel….??

Jens Eskildsen 1 Mar 2010 09:48

35 horses on the wheel is about right, my 03 with 55.000km showed 34,6 on the wheel on a dynorun.

bergspre 1 Mar 2010 18:02

Quote:

Originally Posted by Jens Eskildsen (Post 278795)
35 horses on the wheel is about right, my 03 with 55.000km showed 34,6 on the wheel on a dynorun.

Was that stock?

The problem isnt that it should wheelie..its just that its hard to know if theres anything wrong with the engine or if its just supposed to be like that. The reason I brought up wheelie is that I used it as a reference point of power, thinking that a 600cc would be able to lift the front wheel(if should guess).

Jens Eskildsen 2 Mar 2010 10:08

I've taken then end out of the stock exhasut, opened up the airbox, and used a foamfilter. Not sure if it helped, it did seem to me friskier at the low end.

Mine wheelies without hesitation, but i'be now added some bigger headers and a laser produro exhaust and rejettet the sucker. It wheelies even wit a 16 tooth frontsprocket.

If yu're worried, pay for that dynorun, you'll also be able to se air/fuel ration, and see it is rich or lean and stuff like that.

kentfallen 2 Mar 2010 17:58

This is how to WHEELIE with an XT600 -

YouTube - stunts by Dejan 2

Expertly done I must say......:thumbup1:

Panzer 2 Mar 2010 18:17

Very nice XT too.

Jens Eskildsen 2 Mar 2010 22:14

That's awesome :)

I went for a ride, and brought my helmetcam. I tried to show my xt600e wheelie, sorry to say im not good at holding it up.

The bike has been opened up and rejetted, gearing is stock.

Most of em is in 1st gear. just before, and after the roundabout, its in 2nd. Ii stand up, pump the forks, oull the handlebar and give it full throttle as the fork decompresses. After that, some 1st gear action again. No clutch at any time.

As I said....its been a while, and I suck at it, so bare with me. It's the bikes performance im trying to show :D

Sorry, no sound.... :( The camera does that sometimes, need to get it fixed :thumbdown:

Will make a better attempt later on.

Anyhoot, here it is:

Poor wheelie training


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