Hammerhead
|
| posted on 17/11/06 at 03:03 PM |
|
|
R1 Supercharger
Well thinking ahead to the next project (although I am no where near completing this one) I think I might go the BEC route  and was wondering about
supercharging an R1 engine.
http://www.dynomite.co.uk/Dynosite/HTMLfiles/supercharger.html
looks abit heath robinson. Anyone reckon we could come up with something between us? 200bhp @ 10k rpm sounds yummy and might make you want your mummy
(or something)
|
|
|
|
|
clockwork
|
| posted on 17/11/06 at 03:46 PM |
|
|
I think you'll find that it's a rotrex supercharger, I don't know any other companies that make centrifugal superchargers, anyway,
it's not going to be locost that's for sure.
|
|
|
Hammerhead
|
| posted on 17/11/06 at 03:47 PM |
|
|
how about strapping a bmw mini eaton supercharger to one? is that locost enough for ya?
|
|
|
BenB
|
| posted on 17/11/06 at 04:08 PM |
|
|
As you may know I'm putting a blower on my ST1100 V4
If you do go down the forced induction route there are a couple of books that are quite useful:
Forced Induction Performance Tuning A Practical Guide to Supercharging and Turbocharging
by Graham Bell
is a pretty good all-round book.
There is a specific book for forced induction motorbikes but it's not quite so useful (it talks mostly about off the shelf stuff)... And I can
never find the bloody thing- I know Amazon(US) sell it but you can't find it typing Motorbike Supercharger etc...
You chosen a 'charger yet? BMW Mini CooperS is a favorite for price (Eaton M45 based- though they're going turbo for the CooperS soon)-
about £80 on Ebay. Roots type so inefficient (intercooler time). Centrifugal is more efficient but gives lower boost at lower rpms ie not totally
linear (so you kind less extra oomph and almost a slight lag as the power winds up with RPM)... Then again, the higher cost of a Vortech unit can be
ofset by perhaps not needing an intercooler unless you go crazy with the boost... Centrifugal chargers come up every now and again on Ebay.... Often
they need a seperate oil feed for lubrication and cooling- BMW mini is built in...
You'ld be best to fit a pop-off valve in case of over-pressure. Especially if you use a blow through throttle body- slaming the throttle shut
when the blower is producing the goods is a good way of bending butterfly plates and jamming spindle...
Most bike engines have high compression rations which needs addressing. Best options is an engine with a split case- you can just put extra gaskets
(within reason) to decompress it. Otherwise you're looking at a Farraday decompression plate head gasket or low CR pistons...
Bike engines with funky cams don't respond so well to supercharging tactics- NA engines with large amountos valve timing overlap just splurge
some in the inlet charge mixture out the exhaust. On forced induction engines, you're losing your pressure for that period of time but still
using up engine power to spin up the charger. At least on a turbo any exhaust loss form the inlet charge pressure wave just spins up the blower a bit
faster (sure, you get losses due to inefficiency but it beats the 100% loss a charger gives)...
FWIW I'm going for a Mini Roots blower driven off the end of the crank via a belt (BMW blower uses a multirib / multiV 6-rib pulley) blowing
through a air/air intercooler into a custom plenum. Individual injectors (don't forget you'ld probably need to regulate fuel pressure
relative to boost), with a single suck-through Rover K-series 48mm throttle body. Ferriday engineering decompression plate down to just over 9:1. All
run from Emerald ECU (or maybe Kronenberg Engine Management which recognises the Honda trigger plate already in place).... Otherwise its a custom
trigger plate....
All simple really 
|
|
|
Hammerhead
|
| posted on 17/11/06 at 04:32 PM |
|
|
wow....great info.
Looks like it will be a big project. Maybe a ZZR1400 engine will give me what I want without the headaches!!
[Edited on 17/11/06 by Hammerhead]
|
|
|
ruudbeckers
|
| posted on 17/11/06 at 05:09 PM |
|
|
Or what about a zzr1400 with a supercharger (or turbo)? That would be nice. But also not very locost.
|
|
|
jack trolley
|
 posted on 17/11/06 at 05:30 PM |
|
|
T'other book?
|
|
|
smart51
|
| posted on 17/11/06 at 05:35 PM |
|
|
If you want 200 BHP, a ZZR1400 with a nice exhaust and a remap should do that. No messing with a 'charger.
|
|
|
BenB
|
| posted on 17/11/06 at 08:16 PM |
|
|
That's the fella!
|
|
|
yorkshire-engines
|
| posted on 17/11/06 at 09:42 PM |
|
|
zzr 1400 are now around £3k for a full kit sold one this week to fifth gear
tiff blew there radical up so needed a better engine and guess who had one in stock
got another if you wannit
cheers malc
ps 2x 2006 busa kits as well £2800 each
(had to put each as you all keep tellin me thats cheep for a pair)
[Edited on 17/11/06 by yorkshire-engines]
|
|
|
polus
|
| posted on 18/11/06 at 08:12 PM |
|
|
That aint cheap but my-god thats an engine!
|
|
|
bimbleuk
|
| posted on 19/11/06 at 03:08 AM |
|
|
Rotrex are the only company doing a supercharger almost specifically designed for bike use as far as I'm aware. The new model is tiny and half
the weight of the one I'm using on a Toyota 1.6 car engine. I thought that one was compact!
If you're near TTS or GMC Motorsport then they would be worth paying a visit.
|
|
|
