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  #31  
Old 29-12-2010, 11:42 AM
MaD^94Rx7 MaD^94Rx7 is offline
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Default Re: Rotary "Summer" Unit GB interest

Hi guys

now that we're 10 of us on the list why not spk to a friend of ours that has a rotary and convince them to get 1 too. If we all manage 1 person we double up straight away hit 20ppl and the summer is in production. A little effort goes a long way
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  #32  
Old 29-12-2010, 09:39 PM
Richard L Richard L is offline
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Default Re: Rotary "Summer" Unit GB interest

This is a very encouraging start.

I would like to update and improve some of the circuitry of the v2 summer to v3. This will enable user to HFS-xx user port to communicate with the v3 summer.

Since I have to restart the production anyway, it is a good time to update. I may take advantage of this holiday period to to work on the v3. Updating the system design is costing my time so it is OK, as far as I am concerned. It will also shorten the main production time.

Henri and many others such as OP for helping out and making this special group buy a reality.
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  #33  
Old 29-12-2010, 11:50 PM
Richard L Richard L is offline
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Default Re: Rotary "Summer" Unit GB interest

Quote:
Originally Posted by riprx7 View Post
Id like the summer with hfs-6, but if this takes to months get 20 people I think I just have to get the hfs-6. My car has to be ready in march.
It is possible to get the HFS-6 first get it installed and then put on the summer later.
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  #34  
Old 30-12-2010, 12:06 AM
Richard L Richard L is offline
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Default Re: Rotary "Summer" Unit GB interest

Quote:
Originally Posted by browndog9 View Post
it took me half a night to get to this point. Sorry if I am computer callenged but I'll bet I can change a tire as fast as anyone or better. I have said in more than one post I want one of these summers things. As for the 6 or 3 I guess I.ve got to go with the 6 . So now add me to the group. One last thing, Richard I have had the pleasure to read your posts. The have beeen very educational and I think we could definitely drink a glass of bitters together and talk.
The summer was developed a few years ago when someone told me the RX7 uses an unusual fuel delivery algorithm. Since all our systems use fuel flow as a reference to control flow, I had no choice but had to find a solution so that our system can work properly on the RX7.

Do you have bitter in the states? (Texas), I am very pleased that you have conquared the computer and posted here.
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  #35  
Old 30-12-2010, 12:14 AM
Richard L Richard L is offline
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Default Re: Rotary "Summer" Unit GB interest

Quote:
Originally Posted by r2omega View Post
I am interested. Will you honor the current prices on the HFS6 and HFS3 kits when the group buy actually happens?

1. Drunkengimp (summer+HFS3)
2. remydrm (summer+HFS3)
3. Snyrx7 (?)
4. trainwreck517 (summer alone)
5. MaD^94Rx7 (summer+HFS6)
6. r2omega (summer +HFS6)[/quote]

I will promise to keep the price pegged.

Richard
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  #36  
Old 30-12-2010, 12:16 AM
Richard L Richard L is offline
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Default Re: Rotary "Summer" Unit GB interest

Quote:
Originally Posted by FD-KAI View Post
if you be kind enough to do so... i'd be keen on summer + either HFS3/6 based on what is ideal for me.
I wonder if you still want me to explain after you have read the post #12?

The major difference between the H3 and H6 for the rotary is the boost compensation if you run 100% methanol.
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  #37  
Old 31-12-2010, 12:26 AM
RICE RACING RICE RACING is offline
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Default Re: Rotary "Summer" Unit GB interest

Quote:
Originally Posted by RICE RACING View Post
It's good to see people with rotaries understanding water injection is the only way to make true reliable power

Anyone in any doubts here is a thread (feel free to share and pass on) as to how well it works. Should be mandatory on all turbo rotaries

http://www.aquamist.co.uk/vbulletin/...4063#post14063

^ 8000km of running at ~500bhp level over 80lt of WI used ........ that is (3+hours) at full power setting. And my original engine is like new. When rotaries at this level of power life span can be measured in seconds and minutes (at full power output) this WI just shows again why its the best technology man has ever engineered for the internal combustion engine

Hey Peter, thank for chiming in. There are still a great deal of people do not what water can do for making safe power. You have contributed a great deal already on this forum, keeping me up at soem nights.

Can you share some of the experiences on the effect of running 100% methanol instead of water. Most people on the RX7 club forum run pure methanol, do you think it is unnecessary where water or W50:M50 will do just as well? I am not familiar with rotaries.
Some one added the above in my post high lighted in bold.? I'll reply below.

100% Methanol is any inferior solution for the following reasons:

1> Increased knock.
2> Vastly Increased fluid usage to equal WI.
3> Quick fluid degradation over time.
4> Stress on system parts (corrosion, lack of lubrication, degrading all rubbers).
5> Tuning problems which greatly effect knock resistance.
6> QTY needed to equal majority WI mixtures or WI alone double to triple system weight!.
7> Excessive wash down of lubrication in engine.
8> FIRE hazard!
9> Narrow tuning window to stop knock far inferior to water or mixes of water
10> Totally not flexible (you have no meth then you are fucked!)! where as 50/50 W/M cars and and do run 100% water without any changes in tune or any set up changes! (the slightly leaner AFR setting is ideal for 100% water alone) so if your stuck somewhere no problem, just fill up on water can't do this on 100% Meth set up!
(WI or 50/50 WI cars can run and make power from 10.2:1 AFR to 13.9:1 AFR) try that on pure meth add on set up like Americans preach and your rotary will be out in favor of a V8 conversion )
Methanol Injection is rubbish, but add water to the equation and its something that works, has been proven for a hundred years, and it THE best all round solution, I say the only real solution that is flexible, reliable, and has little excuses associated with its long term application in the real world.

I can't say why American after market automotive people are not with technology as it was developed during the war? To me it is crazy and simply points to lack of knowledge, education, and pure skill.

WI on its own works well, 50/50 by mass mixes with Methanol work in ALL situations, will never freeze, makes excellent power, and counters ALL of the negatives of running methanol alone. It is the complete solution. You can leave the fluid in mixed state for over a year exposed to air and it will always be consistent! (Unlike Methanol) that will degrade quickly and cause untold problems. Mixing 50/50 by mass it undergoes an exothermic reaction and its make up is permanently altered and it is very stable and consistent, giving almost all the water only attributes while being kinder to making power on fixed variables like boost, timing etc, and its easier if your system parts are not up to spec (like ignition capacity).

Methanol is just a cheap alternative and ill thought out (as are ANY alcohol fuels IMHO > E85 included). Its simple cause its easier to fire, but its horrendous to system parts, varies daily, store it too long and you will have a blow up machine BDC style!

The absolute ideal is gasoline main fuel, water/methanol in 50/50 ratio and injected at 40% to 25% of main fuel flow *BY MASS!!!*, it will make power on all set ups, be consistent, not rape any parts be it in your injection system or your engine.

It's not hard, you just need to follow what Frank Walker and many other Mechanical Engineers have been quoted on since early last century. A war was won with their brains V's today's internet forum wars of nobodies............... I know who I would rather believe and follow
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Last edited by RICE RACING; 31-12-2010 at 12:55 AM. Reason: added more information.
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  #38  
Old 31-12-2010, 02:03 AM
Richard L Richard L is offline
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Default Re: Rotary "Summer" Unit GB interest

Peter,

I may be have stepped out of line by moving this thread off topic. It was orignally intended to set up a group purchase for the RX7 summer unit we discontinued.

If you don't mind. I would like to correct this by putting this very interesting contribution by yourself on the "injection mixtures" forum. I would also like to discuss Frank walker's research paper of water/alcohol injection. I believe I have posted the link here somewhere.

Found it: http://enginehistory.org/Frank%20WalkerWeb1.pdf
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  #39  
Old 31-12-2010, 02:38 AM
RICE RACING RICE RACING is offline
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Default Re: Rotary "Summer" Unit GB interest

I do not mind at all

As the thread has been linked all over the place I though I would add some muscle behind it for people trolling in who might be sitting on the fence? or who are looking for some real knowledge.......... since I am very selective on which forums deserve my valuable input these days
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  #40  
Old 31-12-2010, 08:51 AM
Drunkengimp Drunkengimp is offline
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Default Re: Rotary "Summer" Unit GB interest

Supernaut is having trouble posting in this thread for some reason, so here's a post on his behalf:
Quote:
For some reason I'm unable to post in the rx7 summer thread. I'd like to put myself on the list. I'm not sure which configuration I'd buy. Either the HFS3 or 6 but I definitely at least want the summer.
1. Drunkengimp (summer+HFS3)
2. remydrm (summer+HFS3)
3. Snyrx7 (?)
4. trainwreck517 (summer alone)
5. MaD^94Rx7 (summer+HFS6)
6. r2omega (summer +HFS6)
7. FD-KAI (summer + HFS6)
8. RX72NR (summer + HFS6)
9. riprx7 (summer + HFS6)
10. browndog9 (summer + HFS6)
11. Supernaut (?)
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