Turbo heads by Kamtechnik

fredvon4 wrote:I see Nelson adapters coming soon.

I just ordered 3  Kamtechnik Turbo >049/.051 heads
What is the consensus on a good Turbo plug for 25%, 35% nitro in a TeeDee

Yes Virginia I am searching here and reading what I find

And link to source please

Right along with you Fred...already got Pay Pal warmed up this morning!

24k with the 3 blade what was it just at 24?
It's a good number will unload 28k fantastic power.
You can try a hotter plug with the .020 / #4
1 shim keeps it simple / may need two with the 4.5x2 I did.
Just depends on the engine condition. How other add on parts
effect the engine. Recommend the aluminum backplate for a cooler
case hard mount with a center prop sings higher notes. I like the
aluminum carb body too.

This time of year air temps / moisture content will come into play of course.

Thanks Brad. The 24k is with stock COX head. The turbo head peaks at 22.7k under the same conditions. Will try a hotter head but I think it is premature ignition already with the medium plug that pulls the rpm down. The filament in the stock head is much thinner and radiates less heat than the mefium turbo plug, that may therefore cause excessively early ignition timing?

All testing was done with a 4.5x2 and venturi.

I also tested #4 for throttle RC carb and sleeves. Yes colder plug
may be the ticket, will have to play around with the 3 blade, let
us know what works best.



Tee Dee .049 / Kamtechnik Turbo Plug Adapter / APC 4.2x4
23,498 rpm / 7.8oz thrust / .120 hp - 89w / 90 mph pitch speed
OS RP7 / 2 head gaskets / 15% nitro / ACE NV / Throttle sleeve
SPI / stock venturi.

Update 1 head gasket 24,386 rpm.

See example chart depending on shim count, time of year, elevation, air temp and precipitation power can be improved.
Winter maybe here but we can all enjoy setting up our engines.

These are the ones I bought off that auction site.  Some are like 3 for $35 plus shipping, these are less than $6 each.

Hey Brad! Thanks for the Temperature chart...that’s gonna come in handy!  

Most welcome Marley and good find on price.

I saw those last night but wanted some of these / 3 in the mail for my TD .15:

https://www.ebay.com/itm/New-O-S-RP8-Turbo-Glow-Plug-On-Road-Cold-Turbo-3-pcs-71642080-OSMG2715/173633555487?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2648

   

First off Thank You Brad for all the research you have done , this is a Big help to get the most from our engines with the tubo / Kamtechnik replacements . Does anyone know what heat range the Cox glow heads are?

Thank you Eric, which turbo plug adapters are you using?

None at this time i was just making a statement , But want bee long and i am going to order myself a few Christmas presents

logic sez cuz Cox recommended 25% to 35% nitro the heads were medium to cool/cold in two configurations, high compression and very high compression controlled by copper shims

My Kamtrechnic .049/.051 Turbo Plug adapters arrived yesterday

Made me seek out status on my 3 Gold plated P6 turbo plugs never seen this broad a arrive dated spread...18 Dec 2020 ~13 Jan 2021.....so I looked and they seller has a US warehouse and a Hong Kong shipping center...bet they are coming from Asia....Kool no sweat these are to make interesting , semi unique,  good looking TeeDee display engines

The USPS finally found my little package and made good on delivery today. As usual, I’m pleased with Greg’s artful work! Testing will have to wait a while but I had to slap the new setup together for some inspiring eye candy.

fredvon4 wrote:logic sez cuz Cox recommended 25% to 35% nitro   the heads were medium to cool/cold in two configurations, high compression and very high compression controlled by copper shims

This make sense Fred and i just went back to Wiki,, #302 Pre 1955 Standard Head - Hemispherical shape - Low Compression - Smaller dia. threads - used on Space Bug, Thermal Hopper, Space Bug Jnr and Strato Bug Only.[27]
#302-1 Post 1955 Standard Head - Hemispherical shape - Low Compression - Larger dia. threads - used on all engines produced post 1955 until the #325 head was produced in 1979.[27]
#325 Standard Head - Hemispherical shape - Low Compression - Larger dia. threads - used on all post 1956 engines except Tee Dees, QZ, Killer Bees, Venom and Texaco. Replaced 302-1 head in 1979. There are several different exterior appearances to standard glow heads, all noting a slightly different internal shape, compression and glow coil heat.[28]
#1702 Hi Compression Head - Trumpet shaped - High Compression - knurled top - 4 fins on early, 3 fins on later (fastest), 2 fins on most recent - used on Tee Dees, Killer Bees, QZ and Venom. differences range from 4 fin heads being high compression dome shaped to high compression trumpet shaped.[29]
#315 Texaco Head - Hemispherical shape - Low Compression - 5 fins - used on Texaco Engine only. Supposedly allows greater cooling for engine when swinging larger propellers.[30]

Good deal TeeBee did you get that stand from Jason ? Looks Good

Yep. That’s Jason’s work. The CEF is THE place for ALL the cool bits.

Yaro, in Canada, has a good discount on Nelson Tap and die set or individule


http://aerohobby.ca/store/index.php?main_page=index&cPath=14

fredvon4 wrote:Yaro, in Canada, has a good discount on Nelson Tap and die set or individule
http://aerohobby.ca/store/index.php?main_page=index&cPath=14

Hey Fred, thanks for that. Lots of
good stuff there.
Bob

Finally arrived safely today, I was already confused because the usps tracking on December 23rd. in Frankfurt has reported the traffic jam delivered.