Light Flywheels Again.

[koko64]

Fitted and tested the Kamna Evo carbed flywheel tonight over a 100km night mountain ride. The improvement in acceleration and roll on response was quite impressive and the angry engine characteristic felt like a smaller capacity Evo motor. Transmission snatch increased, but not as much as expected, I'm guessing due to the tuned Ignitech map being gentler down low. Well tuned CV carbs don't hurt either and the 37.5 pilot jets help smooth things out. I slipped the clutch in tight confines like I did my former HM1100evo. I'm used to it but it's not everyone's cup of tea.
The 900gm machined flywheel I removed was an excellent compromise and quite smooth, but this minimalist alloy flywheel is on a no holds barred mission of acceleration. The motor sounds more aggressive with the sharper rise and fall of revs and it taunts you to ride it accordingly. It will be too much for some and nearly enough for others.

[Monsterlover]

[GK]

That’s the way uh huh, uh huh you like it....
😆

[koko64]

IMG_0960 by Tony Kokonis, on Flick

IMG_0959 by Tony Kokonis, on Flickr

Machined down stocker at 900gm and stocker at 1900gm

[koko64]

IMG_0944 by Tony Kokonis, on Flickr

The flan pan from Kamna 235mg ish.

[koko64]

The more sensible sub 600gm Kamna, DP, Yoyodyne style

IMG_0943 by Tony Kokonis, on Flickr


My buddy has the DP version on his 944 Superlight and says its too light. PPffft! Like he can talk; he bought my Hyper Evo. Actually, he was talking about putting a stocker on his SL for a tame bike for when he's too tired to ride the Hyper. I guess I'm considering an Uglystrada for that.

[LowercaseJake]

SSR is the one that caused my wngine to be kaput, albeit in aluminium

DM620 would you mind going into further detail? How'd it brick your motor? The usual way of shearing loose and causing mayhem behind the stator cover or something else?

Asking for a friend, lol...

I was able to track down what's apparently the last Nichols FW for 98+ carby Ducs.

And DM"s story us one I've seen 1000 anecdotes across the web about. I can't imagine how many angry customers he must have and it's shocking to see that he still sells that thing tbh. It has a horrible reputation.

[koko64]

Check out page 1 for DM620's post and link on the damage.

[koko64]

Got another ride in today on more open roads with some twisties thrown in. Highway acceleration and corner exits are very impressive. Stretched my new chain, so the next chain will need to be super, deluxe to cope with the stronger power pulses at certain revs.

[koko64]

The more sensible sub 600gm Kamna, DP, Yoyodyne style

IMG_0943 by Tony Kokonis, on Flickr

I will be testing one of these next and comparing how the bike behaves. About 580 gms.

[LowercaseJake]

https://www.flickr.com/photos/darkmonster620/shares/E1iq0m

 SSR Al flywheel after splines were shaven, need to click link to see 4 pics

I'm surprised it was able to destroy the crank before self sacrifing. Sift aluminum vs steel so hard the the the threads will handle 150ft lbs if torque.

In any case, sorry for your loss. . I hope you were able to find a nice engine upgrade to swap to.

[LowercaseJake]

IMG_0944 by Tony Kokonis, on Flickr

The flan pan from Kamna 235mg ish.

This looks identical to the Nichols I had on my old 95 900ss. Thing weighed NOTHING, I paired it with a YoYodyne slipper clutch and loved the combination. Plenty of torque to the rear wheel with the proper amount of "slippage" and still a nice amount of engine braking. That's the recipe I'll likely use from here on out.

My Nichols 3 phase with lumps for carby triggers I found was the last brand new one for 98+ in the know civilized world, heh. Much more if a pita to install as the triggers need removed then reset. Still have not gotten around to that with the other distractions going on with fuel and and electricity plumbing but not looking forward to it. I removed both the triggers and the bracket like a dummy and don't see any obvious position for the bracket. I've only just now cut and fit the chain ffs, smdh.

I'm *hoping* this flywheel can travel into the future with me and be installed on newer FI bikes, with the lump being basically a  benign growth.

The TEC stuff from Kaemna looks identical to Nichols and their reputation for quality precedes them, so as long as they keep making em I'm sure we'll all be OK.

[LowercaseJake]

Actually I'm going to say it looks a little nicer. I like how the lump is bolted on as opposed to welded. My Nichols had little weld burns from where they TIG'd that lump.

[koko64]

What gearing you run on the ?

I'm running 15/40 but I will try a 41 when I replace the chain. Will definitely fit the 580gm flywheel as I have had good experiences with that version in a Superlight with the same mods as my Monster. The pie tin will be put aside for a track motor I am planning for a Superlight style supersport I have a spare 944 motor in the corner. I'm planning for the day when I'm too old to track the Gixxer.

The Kamna site is a dangerous place to visit.

[LowercaseJake]

What gearing you run on the ?

I'm running 15/40 but I will try a 41 when I replace the chain. Will definitely fit the 580gm flywheel as I have had good experiences with that version in a Superlight with the same mods as my Monster. The pie tin will be put aside for a track motor I am planning for a Superlight style supersport I have a spare 944 motor in the corner. I'm planning for the day when I'm too old to track the Gixxer.

The Kamna site is a dangerous place to visit.

Yep. They're like Motowheels on steroids. If I'd seen the 1000ds fcr build thread earlier I'd probably be rocking an SS swingarm with that valve cover mount. It would look especially dope with the cutout of the Roadracing tank exposing everything.