2012 Update: EX Model Engines

I have the Chrisas bee and hope to run it soon I will report back with my opinions
It seems very high quality.

Matt's
Kindly sending me No 18 I was wondering whether starting her
was sacriledge, now I know I'm going to...........

Yeah man and both put them on YouTube!

John,

Once I have a chance to get some tanks anodized there will be a fully customized engine with the black stunt tank and red crankcase. Internals will probably be hc glow head, killer style crankshaft, modified cylinder, lightened piston.

I'm not sure on the 010 starter spring. When I order more springs I will check with the supplier and see what the cost is.

Nitro,

I'd love to see a report on how it runs!

Jacob,

Yes, this is the plan in regards to the cylinder. I already have the setup to only lighten the pistons pretty easily. Next step will be to build some tooling to modify the existing cylinders so they have the SPI without shortening the piston. Too many projects for tooling alone lol....but this one will be next.

On the tapered pistons, I know Cox used a special machine, so this probably isn't possible.

Matt

Matt,

If you ever put out a #4 or Venom cylinder with a tapered bore let me know. I will be good for between five and ten right off the bat. Also, please keep us posted on the full height lightened .049 pistons. Lightened full height .051 pistons would be great too. If you do not offer a .051 will you be willing to lighten a customer supplied .051 piston?

Happly New Year,

Bob

John Goddard wrote:Matt's
Kindly sending me No 18 I was wondering whether starting her
was sacriledge, now I know I'm going to...........

There is an easy solution here....

Buy two.

fit90 wrote:Matt,

If you ever put out a #4 or Venom cylinder with a tapered bore let me know. I will be good for between five and ten right off the bat. Also, please keep us posted on the full height lightened .049 pistons. Lightened full height .051 pistons would be great too. If you do not offer a .051 will you be willing to lighten a customer supplied .051 piston?

Happly New Year,

Bob

Bob,

The surestart cylinders are essentially the same porting as the Venom except the exhaust ports are cut differently negating the SPI. The plan would be to modify the surestart ones right now to open/lower the exhaust port. It wouldn't have the taper bore the Venom did.

The pistons are also ones I modify. Send me an email sales@exmodelengines.com and I will send you a few pistons I was playing with if you want to run some tests. Some are very thin. Too damn cold up here lol.

As far as making cylinder/pistons from scratch, its an idea, but remains to be seen.

Matt

microflitedude wrote:

John Goddard wrote:Matt's
Kindly sending me No 18 I was wondering whether starting her
was sacriledge, now I know I'm going to...........

There is an easy solution here....

Buy two.

Thats what I did, I may even run 1 of them...........

Jaspur_x wrote:

microflitedude wrote:

John Goddard wrote:Matt's
Kindly sending me No 18 I was wondering whether starting her
was sacriledge, now I know I'm going to...........

There is an easy solution here....

Buy two.

Thats what I did, I may even run 1 of them...........

What and fly the other

Went to look at the Top-Flite Wood 7x4 Prop, it's listed as 7 x 4 but described as 7 x 7! I assume this to be a typo? I think 7" pitch would be a bit excessive on a .09!



Wilf

I love the wooden prop, However i also noticed that the pitch would be a typo?

lol, the prop would probably rip itself apart with a 7" pitch!

Sorry guys, it is a 7x4, and it now corrected.

Thanks for the catch!

Matt

I have run an 8x8 on a 1cc diesel though :O

nitroairplane wrote:I have run an 8x8 on a 1cc diesel though :O

SLOWLY I would think!

A frog 100
Surpisimgly my too slowly.
That is one of my greatest engines it takes anything I throw at it.
Ether less,tiny props,huge props,crashes,experimenting with different oils. Etc.
If any engine can my frog can.