Stiletto Race Prep

[Darin Jordan]

I bought a Hyper Performance 3.5 Bullet Shaft, but found that the Allen screws do probably not match the metric system; my 1.5mm Allen key was too small, the 2.0mm too big. Do you have a different system of units for Allen keys in the US, and what would the right key be? ...

I'm pretty sure the Hyperformance unit is standard sized allens, not metric.

[Zlui]

Well, "standard" is a question of standpoint, or rather continent, in this case ... in Continental Europe Allen keys is all metric. What size in inches would I have to buy, which is between 1.5 and 2.0mm ...?

Thanks!
Zlui

[Darin Jordan]

Well, "standard" is a question of standpoint, or rather continent, in this case ... in Continental Europe Allen keys is all metric. What size in inches would I have to buy, which is between 1.5 and 2.0mm ...?

Thanks!
Zlui

I suppose..., but "standard" is what they are called here! It's either "metric", or "standard"...

Since 1.5mm is 0.059055", and 2mm is 0.07874"... I'd say you would be looking for a 1/16" sized, which is 0.0625"... Just a bit bigger than 1.5mm, and a bit smaller than 2mm...

Standard (SAE) sizes are: 0.050", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", etc....

[Zlui]

OK, thanks, I'll be looking for one of those then. Btw, great boat, overall!

[LiPo Power]

So did anyone try M445 and UL-1 motor on stiletto yet???

[JDCrow]

Here is mine using the kit motor and a Grim 40x52/3 blade

http://www.youtube.com/watch?v=14tOaM2BnB8

Still learning the boat.

[ron1950]

the m445 is way too big a prop at 45 cm.....i tryed it and a 42x55 and both were way slow cant get the rpm up....so when to a 640 detounged and cutback slightly... it was with the ul-1 motor//...it screems...i almost ran it out of the pond i was so delighted(small pond but u have to turn at the end lol)..so just my 2cents worth but go small size with lots of pitch....

[Darin Jordan]

the m445 is way too big a prop at 45 cm.....i tryed it and a 42x55 and both were way slow cant get the rpm up....

I'm going to disagree with this... the 42x55, back-cut .090", slightly de-tongued, and pitched up to 3.8 or 3.9" is one of the fastest props I've seen behind a UL-1 motor. Now, that was on a VS-1, but still... Stock, then maybe you are right, but if you are going to work the prop... work this one!

[GP73]

I'm wondering if egneg could prepare some 42x55s with these specs for us...

I'm going to disagree with this... the 42x55, back-cut .090", slightly de-tongued, and pitched up to 3.8 or 3.9" is one of the fastest props I've seen behind a UL-1 motor. Now, that was on a VS-1, but still... Stock, then maybe you are right, but if you are going to work the prop... work this one!

[ron1950]

have to send my 42x55 off to egneg as it is useless to me right now..thanks darin for the stats on that prop....

[duckbum]

Approximate speed for this Tunnel out of the box w/2 2S 30C's?
Thanks!

[mickvk]

Approximate speed for this Tunnel out of the box w/2 2S 30C's?
Thanks!

I got 35 on day 1 (rough conditions). A little tuning with the height/pitch my get a couple more. I may also replace the teflon with brass to gain some efficiency like the boss recommends. :)

[colormegone]

I'm going to disagree with this... the 42x55, back-cut .090", slightly de-tongued, and pitched up to 3.8 or 3.9" is one of the fastest props I've seen behind a UL-1 motor. Now, that was on a VS-1, but still... Stock, then maybe you are right, but if you are going to work the prop... work this one!

So is this a good prop for my Stiletto with a UL1 motor.
I'll send one out to get prepped if this is the case.
Thanks, Roy

[hazegry]

So is this a good prop for my Stiletto with a UL1 motor.
I'll send one out to get prepped if this is the case.
Thanks, Roy

look like thats what he said to me.

[mickvk]

February RC Driver just hit my mailbox.... Review of the Stiletto on P. 132.

The article's ok but I have to admit I buy it for the pictures :)