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Search: Posts Made By: Micropuller
Showing results 1 to 25 of 45
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Forum: Gas Engines
08-29-2007, 12:15 PM
Replies: 15
Views: 11,222
Posted By Micropuller

RE: Engine for rc pulling tractor

Hello Pe,

I must say that the 116 is very tempting. The power is good, the looks are good (I like the carburettor on the back of the engine, instead of it towering above the crankase), if what...
Forum: Gas Engines
08-28-2007, 04:52 PM
Replies: 15
Views: 11,222
Posted By Micropuller

RE: Engine for rc pulling tractor

Why a 102 and not a 115?
Forum: Gas Engines
08-28-2007, 01:48 PM
Replies: 15
Views: 11,222
Posted By Micropuller

RE: Engine for rc pulling tractor

Thanks for the compliment! You can find a couple of (older) videos here: http://home.hetnet.nl/~cyril-wichers/video.htm Just click on the pictures.

@tkg: I searched for the Quadra (didn't even...
Forum: Gas Engines
08-28-2007, 05:27 AM
Replies: 15
Views: 11,222
Posted By Micropuller

RE: Engine for rc pulling tractor

Weight: 3220 grams including ignition and battery
Engine width over the plugs is 330mm

Too heavvy and too wide, nice engine though!
Come on guys! There must be more of you with an opinion on...
Forum: Gas Engines
08-26-2007, 06:34 PM
Replies: 15
Views: 11,222
Posted By Micropuller

Engine for rc pulling tractor

Hello everybody,

First, let me briefly introduce myself.
My name is Cyril Wichers, I'm from the Netherlands and my hobby is RC tractorpulling.
During the last 15 years or so, I've built...
Forum: Engine Conversions
09-23-2006, 03:55 PM
Replies: 18
Views: 3,183
Posted By Micropuller

RE: Question about 2-cilinder inline

New test-session tomorrow:

http://home.hetnet.nl/~cyril-wichers/images/IMG_7380.jpg

http://home.hetnet.nl/~cyril-wichers/images/IMG_7378.jpg

...
Forum: Engine Conversions
09-19-2006, 04:00 PM
Replies: 18
Views: 3,183
Posted By Micropuller

RE: Question about 2-cilinder inline

It's a Robin NBT-415.

Here's a short movie I made this afternoon of the engine running: http://home.hetnet.nl/~cyril-wichers/images/Robin5.wmv
Forum: Engine Conversions
09-19-2006, 08:22 AM
Replies: 18
Views: 3,183
Posted By Micropuller

RE: Question about 2-cilinder inline

Ok, I tried again today. I finally got the engine to run lean. Had to turn the lowspeed needle in to 3/4 turn and the highspeed to 1 turn to accomplish this.
Got a maximum Rpm of 7800 with the...
Forum: Engine Conversions
09-17-2006, 02:41 PM
Replies: 18
Views: 3,183
Posted By Micropuller

RE: Question about 2-cilinder inline

Thanks for the kind words! This is my first conversion, so I had no idea what to expect.

@w8ye; you're right, lots of reading and calculating was done before the first chips were made ;)

...
Forum: Engine Conversions
09-17-2006, 10:39 AM
Replies: 18
Views: 3,183
Posted By Micropuller

Question about 2-cilinder inline

I'm in the process of converting a 2-cilinder 2.5 Cu/In Subaru-Robin weedeater engine from gas to nitro.
What I've done so far is remove the top of the heads an replace them with head buttons (the...
Forum: Traxxas Monster Truck forum
08-12-2006, 12:24 PM
Replies: 337
Views: 94,466
Posted By Micropuller

RE: 3 engine T Maxx

Hey, nice to see that there are still some people with innovative minds who don't mind getting their hands dirty!
I'm a member of a Dutch group of pullers and we also build our own multi-engine...
Forum: Everything Diesel
05-13-2005, 09:00 AM
Replies: 74
Views: 7,888
Posted By Micropuller

RE: Engine gets really hot

I removed the new head after running the engine. According to my calculations, the compression ratio is now about 1:12

There is one thing I still find strange though;
As I understand it, most...
Forum: Everything Diesel
05-09-2005, 07:57 AM
Replies: 74
Views: 7,888
Posted By Micropuller

RE: Engine gets really hot

I did some testing last Saturday and the results up 'till now look very promising.

There was just one problem as in that I couldn't test it during a pull. In my haste to get everything ready on...
Forum: Everything Diesel
05-05-2005, 03:34 PM
Replies: 74
Views: 7,888
Posted By Micropuller

RE: Engine gets really hot

Well, I finished the new head today. Still a couple of things to do to the tractor, but I think I'll be ready for testing on Saturday!
Forum: Everything Diesel
05-03-2005, 04:20 PM
Replies: 74
Views: 7,888
Posted By Micropuller

RE: Engine gets really hot

Ok, here's the idea I have for my modified diesel head. What do you guys think of it?

Cyril
Forum: Everything Diesel
05-01-2005, 05:23 PM
Replies: 74
Views: 7,888
Posted By Micropuller

RE: Engine gets really hot

Well I must say this is turning into a very interesting discussion!

@gcb;
I'm not abusing my engines to that extent. Experience learns that most engines we use hold up for at least three...
Forum: Everything Diesel
04-30-2005, 07:33 PM
Replies: 74
Views: 7,888
Posted By Micropuller

RE: Engine gets really hot

I did a little search on squish band angles and found an interesting comment on a site dealing with rc boat-racing:

Squish Band Posted Thursday, March 8, 2001 by MartenDavis
In all the testing...
Forum: Everything Diesel
04-29-2005, 08:52 AM
Replies: 74
Views: 7,888
Posted By Micropuller

RE: Engine gets really hot

@FrancisPerson;
Thanks for the heads up! I'm definitely going to continue this experiment. If there's something I can't stand it's knowing that something should work, but I can't figure out why it...
Forum: Everything Diesel
04-28-2005, 07:42 PM
Replies: 74
Views: 7,888
Posted By Micropuller

RE: Engine gets really hot

With all due respect, but I think those last comments are quite inappropriate;

1- You say I copied "your" head. Unfortunately I can't seem to find a conversion head for a MAC-10 KP2Y-C engine...
Forum: Everything Diesel
04-28-2005, 02:58 PM
Replies: 74
Views: 7,888
Posted By Micropuller

RE: Engine gets really hot

That's quite possible, because I'm from Holland and my technical English isn't perfect.

The head is made exactly as in the drawing, except for the cooling fins. They are 8mm deep.
The space...
Forum: Everything Diesel
04-28-2005, 12:31 PM
Replies: 74
Views: 7,888
Posted By Micropuller

RE: Engine gets really hot

I'm sorry, but I'm not quite sure what you mean by "deck hight"

The total stroke of the contra-piston is 3,5mm, resulting in a combustion chamber volume varying from 0 to 0.62cc
Forum: Everything Diesel
04-28-2005, 09:50 AM
Replies: 74
Views: 7,888
Posted By Micropuller

RE: Engine gets really hot

Engine bore: 24mm
Effective stroke (from closing of exhaust port): 13mm
Total capacity (excluding combustion chamber and squishband volume): 5.88cc

Squisband: 0.2mm
Squishband volume:...
Forum: Everything Diesel
04-28-2005, 07:34 AM
Replies: 74
Views: 7,888
Posted By Micropuller

RE: Engine gets really hot

As I stated in my earlier message, none of our models use forced cooling, simply because we run them for such short periods that they don't even get a chance to overheat.
The average pull takes 3...
Forum: Everything Diesel
04-28-2005, 04:29 AM
Replies: 74
Views: 7,888
Posted By Micropuller

RE: Engine gets really hot

Thanks for all the input so far!

Just to answer a couple of questions:
- We don't run cooling fans on any of our our tractors. (we use both 2-stroke and 4-stroke engines, either burning...
Forum: Everything Diesel
04-17-2005, 02:22 PM
Replies: 74
Views: 7,888
Posted By Micropuller

RE: Engine gets really hot

Ok, here are the engine settings when I last had it running:

- I removed the head and measured the position of the contra-piston. I calculated the compression to be 1:20,44 (assuming that...
Showing results 1 to 25 of 45
 
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