Very few bike engines have reverse gear incorporated and a bespoke reverse (such as a Quaiffe) will be costly, noisy and significantly reduce your power/weight ratio.
Phil
started looking into building my own BEC
after a little research i am looking at the MNR kit
was just wondering what the best engine would be to get?
i would also want to get reverse gear aswell if this makes any difference
That is a rather ambiguous question. It depends upon your budget, how you want the car to drive, if you want an 'off the shelf' package, what sort of power/torque spread you want. Try the search function, there has been so much discussion on this. The usual suspects are Fireblade, ZX9, ZZR1100, R1, ZX12, Hayabusa etc. The more unusual engines would be V-twins, Triumph Triples (that is what I am using). You can, within reason fit any large bike engine.
quote:
Originally posted by a_j_mair
i would also want to get reverse gear aswell if this makes any difference
where abouts do you live
You might want reverse gear but you should really question whether you actually need it.
Very few bike engines have reverse gear incorporated and a bespoke reverse (such as a Quaiffe) will be costly, noisy and significantly reduce your
power/weight ratio.
Phil
live south west scotland
would be wanting something as quick as possibile tbh
budget for engine around 1-1.5K
would prefer something that is off the shelf as possibile as id first build
look for posts on here by yorkshire engines. They are highly recomeneded by many people. He posts lists of engines and prices.
All depends on budget and what you really want from the car. What exhaust / engine mounts Marc does as standard may be an influence as this will
simplify the build a lot (and save a few quid).
Personally I wouldnt look beyond a 2004 onwards Yamaha R1. Standard parts to fit into an MNR and plenty of power. Not silly prices either (mine wasnt
anyway!!)
If you want more power / torque then maybe a ZX12R or probably the ultimate now is the ZX14R - gawd knows how much this would cost as i guess you want
a dry sump too.
could probably learn to live without reverse just thinking it would be handy for getting in out garage etc
If it is going to cost alot extra and reduce power/wieght i may need to reconsider
Don't bother with reverse
Phil
For that price the ZX12 would be hard to beat.
what kind of figures would you be getting with an R1?
How about a ZZR1100, I know someone who has one, me!
http://www.locostbuilders.co.uk/viewthread.php?tid=69593
I also have a GSXR750K1 for sale but that would only work well on a very light single seater, but it does has over 140hp as standard
http://www.locostbuilders.co.uk/viewthread.php?tid=69454
Cheers
David
not quite ready to buy yet, still in early stages of planning, all going well hope to build it over the winter for next summer
2003 R1 approx 155/160 at the crank.
Good value motor and only requires a baffled sump.
I think Malc (Yorkshire Engines) will fit a baffle for little money if needed.
quote:
Originally posted by fesycresy
2003 R1 approx 155/160 at the crank.
Good value motor and only requires a baffled sump.
I think Malc (Yorkshire Engines) will fit a baffle for little money if needed.
R1 is flavour of the month at the moment for a lot of builders.....
Cheap, powerful, reliable, lots of kit manafacturers will have fitted them.... And they're not that expensive (though obviously they've gone
up in price due to supply and demand now that more people are using them)....
I personally wouldn't fit a reverse gearbox (they sap power, they're noisy, they're heavy etc) but might be tempted to either fit and
electric reverse mechanism or at least fit the ring gear so that if you later decide to fit one it's not too difficult...
electric reverse?
quote:
Originally posted by a_j_mair
electric reverse?
Get yourself up to Knochill on the 28th of July (SIDC morning session) or any Hot Marques session and you will see a few Westies or Caterhams with a
number of different engines.
Get a few passenger laps and decide how much performance you can handle ... a lowly Blade is still plenty quick......
Paul
Pauls Right even the early Engines ie r1 and blade are still fantastic
MNR / R1 - Made for each other
Don't worry about the engine....theres a lot more to it than that
PS Don't bother with reverse
HELLPPPP
Saw an MNR at Newark with a sprocket between the diff and prop - obviously for an electric reverse.
millemg that looks like fun 
quote:
Originally posted by paublo999
Get yourself up to Knochill on the 28th of July (SIDC morning session) or any Hot Marques session and you will see a few Westies or Caterhams with a number of different engines.
Get a few passenger laps and decide how much performance you can handle ... a lowly Blade is still plenty quick......
Paul