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Message started by Dave on 03/21/16 at 04:05:15

Title: In search of HP
Post by Dave on 03/21/16 at 04:05:15

Our Savage is a mild mannered bike, and a lot of us appreciate the fact that a single cylinder engine with 30 HP can do so much to make us happy. (And then, some of us want just a bit more and install a Wiseco and change the cam, exhaust, etc. in search of just a bit more).

I was reading a motorcycle magazine that a test on the KTM 690 Duke. That single cylinder bike has 73 HP! :o

Now I do realize that it is not the right bike for me, and all that extra HP is most likely something that would get me into trouble - but I do appreciate the technology and what can be accomplished when performance is your goal......and at $ 9,000 it is a bit out of what I am willing to spend on a toy.

http://www.ktm.com/us/naked-bike/690-duke-2016/

Title: Re: In search of HP
Post by justin_o_guy2 on 03/21/16 at 04:42:35

In addition to the internal engine changes, the power delivery is massaged by the 50mm ride-by-wire throttle body and the resonator chamber attached to the intake tract which helps tune the power pulses within the engine.

Intake manifold design theory.
How cool would it be to have a pulse of air stacking up , just waiting for a place to go, when the intake valve opens..
http://www.motorcycle.com/manufacturer/ktm/2016-ktm-690-duke-690-duke-r-first-ride-review.html//

A vibration killer shaft n the head,
They really are wringing everything they can out, and designing in gram here, gram there, weight savings.

Title: Re: In search of HP
Post by DesertRat on 03/21/16 at 06:51:17

nice. not my "style". like the utilitarian aesthetics of the engine.

Title: Re: In search of HP
Post by KennyG on 03/21/16 at 07:03:14

I tried one of the Dukes at the local dealer and I cannot throw my leg up high enough to get on the seat.

I am about 6' tall.

Kenny G

Title: Re: In search of HP
Post by DesertRat on 03/21/16 at 07:26:59

what would it take to get close to that HP with a carb'd single like ours?

Title: Re: In search of HP
Post by verslagen1 on 03/21/16 at 08:06:44

a miracle.

Title: Re: In search of HP
Post by Dave on 03/21/16 at 08:08:48

133224322523053623570 wrote:

what would it take to get close to that HP with a carb'd single like ours?

The Savage engine could never make that kind of HP....it is designed to be a low cost, low HP engine at an affordable price...we kinda' have Briggs and Stratton technology in our bike. The cylinder head on the Savage does not provide a good path for high flow volumes, the engine has a long stroke to make lots of low end torque - but it cannot turn high rpm which is where you can make HP (HP is torque x rpm).

With a lot of work and a good bit of money.....the Savage engine can make upwards of 40 HP. I am not certain it could ever be made to make 50HP reliably.

The Savage engine has a 94mm stroke and a 94mm bore - which is called "square". The KTM engine, and the DR650, and any large Thumper that wants to make HP is going to be significantly "oversquare" with a bore larger than the stroke. This allows for higher engine rpm, and bigger HP numbers. The Duke 690 engine has a 105mm bore x 80mm stroke, and the dyno charts shows the engine going to 9,000 rpm.

Title: Re: In search of HP
Post by Art Webb on 03/21/16 at 08:22:23

7F515A774655475C340 wrote:

I tried one of the Dukes at the local dealer and I cannot throw my leg up high enough to get on the seat.

I am about 6' tall.

Kenny G

with a tall bike you mount by stepping on the low side peg and swinging over from there, like a horse
I mounted all my dual sports and dirt bikes like that, and even my Ninja500, when it was fitted with the saddlebags / tail bag combo
Once you're on the suspension compresses
Not necessarily enough to flatfoot the bike, but it compresses ;D

Title: Re: In search of HP
Post by old_rider on 03/21/16 at 16:39:09

Well, if you want more horse power on the savage/s40, it's simple!

Step one, remove engine/transmission

Step two, search for engine with the same or close dimensions with more HP

Step three, cuss, swear, bleed, bang your head, cut , weld, grind, re-measure, cuss some more, repeat previous steps.... until engine and transmission fit.

Step four, realize it isn't a savage anymore and sell it to buy another savage. :)

Title: Re: In search of HP
Post by Serowbot on 03/21/16 at 16:48:57

My Savage not having 80hp is my excuse not to ride stupid... :-?

Title: Re: In search of HP
Post by Kris01 on 03/21/16 at 18:41:18

Like Serowbot said, the lower power level of the Savage helps keep me safe. There's been plenty of times I'd like to roll on the throttle and fly passed a slow moving car at light speed but the Savage won't do that. I just have to wait for a chance that's clear and then pass like I actually have something to live for! ;)

Ride safe!

Title: Re: In search of HP
Post by MMRanch on 03/21/16 at 19:34:22

Hay !

I find very few cars that do what my stock S-40 can do ... ;)

On the other hand

I'd like the GS-500 motor in my Savage frame ... ::)

Title: Re: In search of HP
Post by springman on 03/21/16 at 19:46:22

Gus, I'm half a foot shorter than you. Maybe if I get a running start and jump, maybe then I can get on one of those bikes. ;D

Yeah, I like S40 seat height. I would on occasion like to have more power, but that other 90% of the time, the S40 is great.

Title: Re: In search of HP
Post by Dave on 03/22/16 at 03:30:02

6162607B7C757F737C120 wrote:

I would on occasion like to have more power, but that other 90% of the time, the S40 is great.

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1455470509

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1338603955/0#0

Your Welcome! ;)

Title: Re: In search of HP
Post by Kris01 on 03/22/16 at 19:03:55

6B796B79746768656E260 wrote:

I find very few cars that do what my stock S-40 can do ... ;)

That's true. I'm typically the first one away from a light without even trying. I love the torque of this engine. I don't race it. Everyone else is just slower than me! ;D

Title: Re: In search of HP
Post by MMRanch on 03/22/16 at 20:25:58

That's true. I'm typically the first one away from a light without even trying. I love the torque of this engine. I don't race it. Everyone else is just slower than me!

I ride with some fellers on really big bike and still wait on them and wonder "Why doin't they keep up ??? :-?"

;)

I'm sure this is OldFellers fault somehow !!! ;D

Title: Re: In search of HP
Post by Art Webb on 03/22/16 at 20:42:25

considering I've put a mohawk on my seat following you while you weren't even holding the bars........

Title: Re: In search of HP
Post by old.indian on 03/22/16 at 20:58:25

If you want Horse Power, you spend mega green and buy a motorcycle with 180 -200 horse power at the rear wheel... Of course you may end up with a MAJOR laundry bill before you get it out of the dealership. But, Hay YOU have a motorcycle capable of going 200 MPH (for a rider capable of 60 MPH).
As I noted, the modification project I'm into (awaiting some parts). i.e. Carb, head cleanup/machineing, stage 3 cam, 10.5 Wiseco, and larger bore exuast system will net me 10-12 HP and about the same amount of additional torque. What it won't do is over stress the engine. As long as I don't change my riding habits (cruse at 60/ 65 ) I'll get where I'm going and back with some extra ponies on tap if, and when, I need them. 8-)

Title: Re: In search of HP
Post by Oldfeller on 03/24/16 at 16:18:09

4B594B59544748454E060 wrote:

I done ruined you --- you go on group rides and buzz up through the ranks and out the front without even twisting the throttle ....... and you grin while you are doing it.

Ruined Zeb too -- he was tilted that way already but I polished him up a bit for you.

I won't even ride a bike around town any more -- too too tame.

Dave, not so much -- unless it is raining hard. Get him cold and wet and his inner Savage comes out every time ......