Members Page/Allan Fillery - VEMS wiki www.vems.hu

MembersPage/AllanFillery (2010-02-01 11:16:27)

Understand WhatEverYouDoYouDoItAtYourOwnRisk

Engine is one I am building from drawing board up for an aircraft that I am also building.

hence the low rpm as it is direct drive.

Static ground revs no more than 2700 other wise the propeller tips will break the sound barrier (inefficient)
- guessing: 3000 RPM (=50 rev / sec) = 330 m/sec, circumference = 6.6m. Is the propeller dia ~ 2meter ?
we put as much pitch on prop as to limit revs
also engine internals would not take high rpm (the internal forces go up by the square of the revs])
legs out of bed in the sky causes one to sweat a bit , thats why we use the fan to keep us cool

Prop 1.7m 2500 RPM most efficient rev

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Injectors are out of a Nissan 280z are 2.6 ohms [ barbed tail, will consider changing ] and best idea of cc rate is 270.

we do not recommend low-Z injectors even on ground.

Point noted. Will be changing later as I need to remake injection ring. But first I would like to get it fired up.

Basic info

number of cylinders

trigger

primary trigger VR or HALL ?
- pattern ?
secondary trigger VR or HALL or none ?
- pattern, position ?

Ignition outputs

number, coiltype, coil resistance, inductance (if known), etc...

Discussion

Is there a manual directly relating to VemsTune 0.10.14 I am finding it impossible to go forward without better information.
- it has a help. It has many features, but the basic features are not hard to handle. Tutorial is in the works (separate manual other than the help is not planned: everything should be in the help).

Basicly the Members page have answers but generally don't say how they got them it is also a pain to wade through such a lot of data and not really gaining much.

You will not be able to set the parameters one-by-one. We will use a starting setup, and modify the bits according to your wiring. So:

Start by describing your system above, THEMATICALLY organized by subsystem. So we can help you get a starting setup. Note that even the cylinder count is missing !

Fill in this page above.

It now seems that the MAP guage on main screen is directly controlled by the movement of the throttle

The software is running alphaN, instead of speeddensity, that´s why the mapsignal is the same as TPS/skassa

correct, if set in alpha-N mode (than rather "load")
will be speed density if settig both hybrid_rpm to 0 RPM

The d TPS/dt digits below this heading[reading at255 at 100% throttle] are the same as in the MAP gauge [main screen] these change as the throttle is moved is moved and read the same. So far all that is connected are Grnds TPS,IAT,Crank Cam sensors,clt, computer cable, power. There 24 rules completed no errors .some help would be nice Thanks!

You might want to setup a build page on the forum.

http://195.159.109.134/vemsuk/forum/index.php

In any case your alpha-n rpm must be 0 to the ecu to run

speed density.

You should find this in the Alpha-N/Speed density settings menu under the Base settings menu

Thanks sorted that bit, will consider forum idea