Rotary "Summer" Unit GB interest

[MaD^94Rx7]

1. Drunkengimp (summer + HFS3)
2. remydrm (summer + HFS3)
3. trainwreck517 (summer alone)
4. MaD^94Rx7 (summer+HFS6)
5. r2omega (summer +HFS6)
6. FD-KAI (summer + HFS6)
7. RX72NR (summer + HFS6)
8. riprx7 (summer + HFS6)
9. browndog9 (summer + HFS6)
10. Supernaut (summer + ?)
11. Gringo Grande (summer + ?)

[cocoanton]

how much of the system relies on the fuel delivery and how much on the boost in the intake? Is it combined in the HFS?

[MaD^94Rx7]

Think it's best that Richard answers your question. Try pm him or email him...

[Richard L]

Originally Posted by cocoanton

how much of the system relies on the fuel delivery and how much on the boost in the intake? Is it combined in the HFS?

Both HFS-3 and HFS-6 has boost compensation.

- HFS-6 is user adjustable from 0-20%
- HFS-3 is fixed at 70% IDC and 30% Boost. (you can requrest different ratio before despatch)


Richard

[MaD^94Rx7]

What's with the hold up on these???? No one needs a summer that works out the duty cycle on RX7s with different size primary & secondry injectors?? I must be breaking everyones balls now but pass the word on ppl or else we going to be staring at this list forever...

Peace

[Richard L]

If the primiary is overly large, (some do), then you will be well into the mid boost region before the secondary injector comes on or thr primiary reaching 50% DC.

[MaD^94Rx7]

So if I understand correctly the main advantage is when you have let's say standard 550cc primaries and 2200cc secondaries?

[Richard L]

The advantage is when you have 1600cc and 2200cc injector.

If you have 550cc injector it is not necessary to have the summer. Just trip the HFS-6 with the secondary injectors (from 25% onwards).

[Richard L]

If it helps to speed things up, I will start producing the summer (v2) and hold on 9 units for future orders. It is taking too long for this to reach 20.

[MaD^94Rx7]

Oh right now I get then it's needed even with standard injectors 550cc & 850cc which is what I have now. One other thing, does the summer have a limit on the size of the injectors?