ESE's works engine tuner

[TZ350]

That cylinder is very impressive work.....

[TZ350]

Fuel dropout in the plenum is what inspired me to go fuel injected.



Engine back together after getting a new rod kit and direct B/E oiling modification. Setting the squish accurately to 0.65mm by hand and compression ratio to 14:1 took a bit of time.



24 - 1 tooth trigger wheel ring made from an Aprilia SR50 flywheel and pressed onto the original GP-NSR110 flywheel.

[Tim Ey]

24 - 1 tooth trigger wheel ring made from an Aprilia SR50 flywheel and pressed onto the original GP-NSR110 flywheel.

Oh, thats damn clever! What is the original inner and outer diameter of the SR50 Flywheel?
Regards
Tim

[Muhr]

Thanks for the heads up about the inner transfer duct radius.


With the Power Valve set to open at 96deg ATDC there are significant gaps around the PV blades.

The PV's are fiddly and difficult to get in and out so I cut a damaged cylinder to make a jig to make it easier for welding and grinding them to a closer fit.

TZ350
Were in the garage yesterday and sanded on a PV similar to the one you have, then come and think of that you discussed it a while ago. The one I did was also cast, we preheated them to about 300 ° C and then TIG welded with 316. Also had a 3d model on nsr j20 do not know how similar it is but. Probably you've already solved it.

[F5 Dave]

Sunday night music interlude.
She really is wonderful.

https://m.youtube.com/watch?v=0df0racc3vk

[SwePatrick]

Today i paid my debt´s to the gods of speed

I almost reached my goal,, so very close!
I guess that if i was given just one more dynopull i would have reached my goal.

But, nope!
Gods of speed do exactly as they want, they don´t care about the tuners dreams

I had dreams of reaching 70hp to the wheel.
I crashlanded at 69.49hp

[peewee]

patrik who put that plating on there ? maybe send it back for warranty or better yet, a refund . I haven't tried lancourt but I think their in uk somewhere. maybe they do good job. here in the states ive used millennium every time and never one problem

[SwePatrick]

I honestly don´t know.
As in Sweden nobody is plating, there are some companies that sends to UK or Holland.
I think mine is done by someone in Holland, can´t know for sure thou

[ken seeber]

SwePatrick this is a clear case of shit plating, clearly no bonding to the base aluminium, as witness the flaking coming off in chunks.
However there are lots of choices. I have seen a few cylinders done by Millennium Cylinders in the US with good & economic results, but I have used NZ Cylinders (once) with good results. The latter is a bit tough to say, especially when coming from an Ozzie..

[lohring]

Has everyone seen the rev 2 new piston design video?
https://www.youtube.com/watch?v=Xpwwr0QEjuo

Lohring Miller

[husaberg]

Has everyone seen the rev 2 new piston design video?
https://www.youtube.com/watch?v=Xpwwr0QEjuo

Lohring Miller

That bully in the background is beautiful

[marsheng]

. The latter is a bit tough to say, especially when coming from an Ozzie..

Get over it you Western Islanders !!!!

[husaberg]

SwePatrick this is a clear case of shit plating, clearly no bonding to the base aluminium, as witness the flaking coming off in chunks.
However there are lots of choices. I have seen a few cylinders done by Millennium Cylinders in the US with good & economic results, but I have used NZ Cylinders (once) with good results. The latter is a bit tough to say, especially when coming from an Ozzie..

I assume swede was looking for one closer to home thn the south Island of NZ
Pitlane mentioned one most had had good results with somewhere in euroland 2nd or 3rd edition i think.

SOMEWHERE NEAR HERE I WOULD SAY
http://www.pit-lane.biz/t3173p280-gp...-part-2-locked
I know it much cheaper to get done in euroville i guess just economies of scale.
Aprilia Race Dep used Tecnol to do the replating.
But as you will see here the coating used are all pretty much the same other than one used by Kawasaki

ifferent plating...
Hi...this is my very first post here....I had your address from a friend....because I work in an italian company who made aluminium cylinders with GILNISIL plating...guess which???
We made alu cylinders for Aprilia (SXV-RXV-MXV 450-550), Rotax (for Aprilia 125, 650, 1000 and BMW 650 singles but also for karts, ATV, snowmobile, ULM), BMW (boxers 850-1100-1150-1200), Cagiva (125 Mito), Husqvarna (125-250 2 stroke and 250-450-510-570 4 stroke), Piaggio (scooter engines), Moto Morini (9 1/2 and Corsaro 1200), Moto Guzzi (all models 750-1100-1200), Triumph (Bonneville serie, Daytona 675 and Rocket3) and many others, not only for motorbikes but also for chainsaws, compressors or other uses.
We have also a "replating service", where I'm responsible: I can ensure that with KTM, TM, Gas Gas, Sherco, Ducati, MV Agusta, Benelli, Honda, Yamaha, Suzuki and latest Kawasaki we use the same chemical substances we use with our cylinders. Only Kawasaki, from middle 80s till 2000-2001 used a tungsten-based plating: with these ones we must use different substances...Yes, obviously every company who have a plating department use a different name: german company Mahle started with Nickasil (or Nicasil) then GILARDONI with GILNISIL (GILardoni NIckel SILicon), BMW with Scanimet, Tecnol with CERMETAL, Suzuki's SCEM and SBC (Suzuki Ceramic Electro M...??? and Suzuki Boron Coating), Moto Guzzi (from 80s till ten years ago) with NiGuSil (Nickel Guzzi Silicon)....all based on a matrix of nickel with small particles of silicon-carbide.
Today, with Internet, you can find the instructions to make a nuclear bomb, so you can find the "recipes" of nickel-silicon plating: most important differences are in the way you plate cylinder wall and in final honing (roughness, etc).

Coming to the first question, you can replate a cylinder more than 2 time, 4-5 is not a problem for the structure...problems begin with exhaust valves seat
and holes for water joints, for example. After plating we made a sand-blasting to clean cylinders from dirt. Normally I protect critical zones with normal silicone (the classic transparent used by plumbers or carpenters); if you don't do this, after second replating valves and joints can move in its seat, with all the problems you can imagine......

I think it's enough for my first post....or not???

https://www.apriliaforum.com/forums/...ting-Cylinders

THIS IS THE POST WHERE THE GREEN EPOXY APRILIA USED IS NAMED
http://www.pit-lane.biz/t3173p300-gp...-part-2-locked

[peewee]

I tried some green putty and it's fine with petrol but with methanol it kind of turned to marshmallow. I don't know if it's the same green stuff as aprillia use. Devcon f has so far worked very well for me with methanol and nitro. For fun I bought some Devon titanium putty but have yet to try it

[pete376403]

The Chev Corvair flat 6 was an aluminium block where the pistons ran directly in the ally bore. I recall reading that they used a very high silicon alloy, and etched the bore so the particles of silicon provided the running surface (no doubt a lot more to it than that) - could that work with two stroke engines?