New Pistons and Future Pistons

[Definitive Dave]

Nikasil baby!!!

 

[jacob j.]

Getting plastics made isnt easy, they want an order of 5-10,000 pieces prepaid to start on them

I believe the guy that did the Eliminator kits had them made in South Korea. I'm betting it was pricey to get started.

 

[shorthunter]

it is on our list but down the road aways at this point

I'd skip the 7900 piston and just build an MS460 piston. I don't think there is much room for improvement on the current slab sided piston. The Dollys run better as a mutt anyway

 

[mettee]

Yeah please dont skip the dolmar piston

 

[Deets066]

Yeah please dont skip the dolmar piston

What he was saying is that you could just run the 460 piston in the 7900. 2 birds, uno stone

 

[mettee]

I'd have to see it I've never done anything like that.

I lean toward having a purpose built piston. I modeled a custom piston so I could have it made. I may just end up doing that.

 

[Fruecrue]

I have one ported and running an OEM 460 piston, jury is still out, only made a few cuts.

 

[drf256]

Any plans on making a different pin bore for some pistons.

As in a 12mm 281/288 or any 10mm pinned big bore slugs? Can’t fit ‘em in an 1128 with that 13mm pin, even though they fit in 1122 with a 395 bearing.

What about the 272XP piston? I guess the 7900 piston will likely make that one up.

 

[Definitive Dave]

Any plans on making a different pin bore for some pistons.

As in a 12mm 281/288 or any 10mm pinned big bore slugs? Can’t fit ‘em in an 1128 with that 13mm pin, even though they fit in 1122 with a 395 bearing.

What about the 272XP piston? I guess the 7900 piston will likely make that one up.

Ill make anything i think i can sell , we will talk

 

[drf256]

Ill make anything i think i can sell , we will talk

I’ll ship the Sudafed.

 

[drf256]

Now that I’m awake, I realize what I’m wanting may not be marketable.

A 52mm piston with a 10mm pin bore would be nice, but not sure if many would sell.

Will the 7900 slug have a 1.2 mm ring option, or will be stuck not being able to use in a Stihl jug?

 

[Definitive Dave]

haven't started the design yet but unless the 7900 is a Mahle nikasil cylinder only then we will use the 1.2mm ring to preserve the plating

 

[huskyboy]

haven't started the design yet but unless the 7900 is a Mahle nikasil cylinder only then we will use the 1.2mm ring to preserve the plating

I think mine was a mahle the last time I looked at it. It’s been a while, so I’m not sure. How do you tell if a jug has fake nikasil?

 

[Definitive Dave]

I think mine was a mahle the last time I looked at it. It’s been a while, so I’m not sure. How do you tell if a jug has fake nikasil?

only the modern era Mahle jugs have actual Nikasil, they own the patent , but its not that easy None of the Stihl jugs have Nikasil even if they are a modern Mahle jug. This is because Stihl uses four different manufacturers to build their jugs and they all use the Stihl proprietary plating, so they will be the same.
I would need the number off of the base of a Dolmar/Makita Mahle jug to be able to find out from Mahle if it uses Nikasil or another formulation.

 

[huskyboy]

only the modern era Mahle jugs have actual Nikasil, they own the patent , but its not that easy None of the Stihl jugs have Nikasil even if they are a modern Mahle jug. This is because Stihl uses four different manufacturers to build their jugs and they all use the Stihl proprietary plating, so they will be the same.
I would need the number off of the base of a Dolmar/Makita Mahle jug to be able to find out from Mahle if it uses Nikasil or another formulation.

Wow, that’s interesting, never would have knew that. Thanks for the info Dave.

 

[Definitive Dave]

we learned about this by destroying a pair of 066 and a pair of MS661 jugs (all ported) with running single ring Wiseco pistons in them, just destroyed the plating in just a few tanks of fuel
after researching all kinds of stuff about rings and getting ahold of a guy at Mahle through a good friend here on the site we found out that most cylinder manufacturers use "Nikasil" the way people talk about a Xerox machine, just as a generic term.
I will say that the plating that Meteor has put on their cylinders in Italy by a major manufacturer is strong enough to run the single thin ring pistons on without damage, but porting them is pain because the plating is so strong too.

 

[Dub11]

we learned about this by destroying a pair of 066 and a pair of MS661 jugs (all ported) with running single ring Wiseco pistons in them, just destroyed the plating in just a few tanks of fuel
after researching all kinds of stuff about rings and getting ahold of a guy at Mahle through a good friend here on the site we found out that most cylinder manufacturers use "Nikasil" the way people talk about a Xerox machine, just as a generic term.
I will say that the plating that Meteor has put on their cylinders in Italy by a major manufacturer is strong enough to run the single thin ring pistons on without damage, but porting them is pain because the plating is so strong too.

How hard would it be to get bare cylinders for a supplier and then send them of to U.S chrome for plating?

I'm just thinking someone should be able to get some naked Chinese jugs for next to nothing then do there own thang to it.

 

[Dub11]

Now that I’m awake, I realize what I’m wanting may not be marketable.

A 52mm piston with a 10mm pin bore would be nice, but not sure if many would sell.

Will the 7900 slug have a 1.2 mm ring option, or will be stuck not being able to use in a Stihl jug?

52mm slug with a 10mm pin could allow a 460/036 hybrid........

 

[Czed]

I vote for quality 266 topcovers
And a hi top 288
For the hi top boy's.
Pistons are pretty much covered I'm interested in.

 

[shorthunter]

through a good friend here on the site we found out that most cylinder manufacturers use "Nikasil" the way people talk about a Xerox machine, just as a generic term.

I had someone tell me once that you can't hone a saw cylinder because they are nikasil plated.