SR4t "project" - updated 4/2/11

[psycledelic]

All I have to say is that if I ever attempt to shorten my Termis, you will all know it because the sound of all the earth's atmosphere being sucked in as my butthole puckers will be pretty noticable. 

Balls of steel man. 

bike looks GREAT!

[grandpa nate]

All I have to say is that if I ever attempt to shorten my Termis, you will all know it because the sound of all the earth's atmosphere being sucked in as my butthole puckers will be pretty noticable. 

Balls of steel man. 

bike looks GREAT!

BIG +1

[TAftonomos]

Driven sprocket + carrier and Ti fasteners+al washers = 1.3 (lbs/ounces)
Stock rear sprocket = 3.4
Stock 525 chain = 2.6
RK 520gxw chain = 1.12

Front sprocket swap (from aftermarket 14T solid to aftermarket 15t drilled = same weight

So far, 2lbs 11 ounces (almost 3/4 lbs) has been shaved of rotating weight off the rear end.

I will weigh up the Ti rotor fasteners, lightweight rotor, Ti caliper mounting and half bolts, and aluminum wheel and sprocket nuts once they arrive.  I should be able to get rid of a solid 4lbs of rotating weight off the rear end while keeping the stock wheel. 

[Monstermash]

I happen to have my scale around, so I took a pic:







Yeah, taking 3 1/2 lbs of rotating weight does something alright.  Now the front end comes up with aggressive rollons in 3rd.  Forget first, better be careful.  Second is much quicker to point to the sky as well, but it never came up in third (got light, thats it).  I don't suppose clutching a wheelie up will be easier (less energy stored because of less mass), but that doesn't matter, because I don't do that anyway.  Low speed maneuvering is jerky now, but who rides at 5mph?

 Just curious Theo, do you think you may have removed a little too much weight from the flywheel? I have heard that this is possible and makes the bike hard to ride. Much like you described at slow speeds.

[TAftonomos]

If you ride around at 5mph, you'ld find it a bit harder to be smooth.  If I was going to be stuck in traffic alot, I'd pass on the flywheel. 

For me, the flywheel transformed the bike.  I've stuck a lightweight flywheel on just about every manual transmission vehicle I've ever owned.  Unless I was drag racing the thing with sticky tires and needed the punch off the line, the lighter....the better.

[LA]

I'm with you on that.  I've lightened the FW on almost everything I ever owned - that had a manual trans on it anyway.

I'll never forget the look on my bro's face when I took the flywheel off my brand new 80 model SS and threw it down through the woods.  He said you can't do that.  Sure I can. Put a little over 100,000 mi. on it that way.

Ran one of those 9 oz. Nichols on my old s4r too.

Good ole Reg Pridmore machined my old BMW FW from just over 13 lbs. to just under 6 lbs. and I took my BMW car from 25 lbs. to 12 lbs.  It's a great mod in my experience.

I wonder how much more the S4RT/S crank weights than the 999SB?  

LA

[He Man]

did you have to do any adjustments to make it idle better?

[NorDog]

What's an S4Rt?  Is that an early S4RS?

[TAftonomos]

No idle adjustments needed, but I will need a few things tweaked once the new ECU arrives  .  Then comes figuring out the pinouts on the dash, and replacing it with something smaller  .


The S4Rt/S bikes got the early 999's heavy crank and rods, but the later model's "S" cams.  There is a bunch of wieght on and around the crank that is begging to be removed, but that will have to be next winters project.....I'm already FAR behind in what I need to do for this summer

I called my bike the S4Rt, as it's the testa monster (deep sump testastretta) and it's the titanium paint scheme.

[dbran1949]

What's an S4Rt?  Is that an early S4RS?

The official Ducati Name was the S4R Testrastretta which is identical to the S4RS Testrastretta except for the forks and rear shock. The S4R did have the nice Titanium / Red color combo not available on the S4RS, which is my second favorite color combo, second to the white / red

[MonsterMan1036]

Theo,

Just weighed my new 25mm Ti axel and the stock one:

Ti= 8.200oz
Stock= 11.965oz

Almost 1/4 of a pound right there, not bad.

Do you have any Ti bolt kits ready to go?

[dbran1949]

Do you have any Ti bolt kits ready to go?

+1 on that. I'm willing to pay for your time as well just to get the right parts

[TAftonomos]

Working on the lists guys.

1/4lb in the axle is awesome!

Anyone know if the axle is the same as the 999's?  Found a  supplier that has a few in stock.


I was planning on breaking the kits up, or do you want the whole shebang?

Something like:

Front forks/pinch bolts/fenders/controls

Engine case

Rear

Etc?

Right now I'm working with a machinist to create some Ti bolts for the rearsets......those ones are heavy steel things

[TAftonomos]

duplicate

[dbran1949]

Personally I'll take what ever you got. I'll probably buy everything, but do yourself a favor and make more granular kits. This way if some folks just want the front fork assembly they can get just that