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Post by edwinwl on Mar 23, 2014 21:24:39 GMT
A water cooled BMW boxer would push a trike.....
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Post by paulas on Mar 23, 2014 23:00:43 GMT
I completely agree about the throttle being controlled by the nut holding the steering wheel. I also know that you guys have built some awesome machines that you should all be very proud of and the majority of builders will want the "full experience"!
From a personal point of view, I reckon 100 BHP or there abouts would still go like the clappers and beat most supercars to 60. Lets be honest - if we mess it up at 100mph plus in must kit cars, the result would not be pretty, so top end really doesn't come into it for me.
I did see and hear an atomic with a Firestorm motor in it and that looked, went and sounded amazing. Is the v-twin a bit "long" to fit? The Raptor 700 single would sound great but I do agree that the power would be marginal in standard tune.
The R1 is such an expensive donor and most people don't appear to be getting anywhere near as much as they expected for their residual parts.
I cant see RTR really being that keen in changing a winning formula except as a one off at a cost, but thinking about it is interesting!! |
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Post by themelon on Jul 22, 2014 1:06:34 GMT
A water cooled BMW boxer would push a trike..... That would be an expensive Trike because only the newer R1200 engines are water cooled, 2013 in some models. Plus the motor is actually quite tall. I have a 2007 BMW F800s that I'm thinking about using. I have owned it since it was new but never really had the opportunity to drive it much. 3300 miles on it and it sits in my dining room. It has good power, dry sump oil system, a sexy single sided swing arm with belt drive and lower gearing than an R1 I'd bet. How long is the R1 from the rear axle to the front of the exhaust pipes? I get about 42" on the F800. The older longitudinal K-Series would be nice as well. |
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Post by roadtrackrace on Aug 13, 2014 9:36:06 GMT
So what should it be folks?
Triabusa is now in production which gives one alternative. We're building an automatic tR1ke based on a 80bhp Aprilia Mana engine for a disabled chap and it will still have 250bhp/tonne.
100bhp is plenty in a tR1ke but when you have 150/170bhp and nail it on a dry road... there is nothing quite like it.
We would welcome an alternative powerplant suggestion, but we can go from 1998 to 2006 R1 model years with only 2 variations in the chassis and we need this kind of flexibility to make it viable for production.
A one off installation will ad about £1000 on to the price of your vehicle which in some ways defeats the object of changing the R1 formula.
RTR.
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Post by edwinwl on Aug 13, 2014 18:38:51 GMT
Its engine character versus Money.
Using the Yamaha R1 as donor is a very good choice if you consider: Power versus Money.
This motorbike is still popular, so parts not needed are sold easily.
Also with 150HP carburetor engine, the acceleration speed of the tR1ke is ridiculous fast.
Personally I like twin engines: Better sound and more torque engine character.
Like: Yamaha TDM, Suzuki TL1000, Honda VTR
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Post by erik on Aug 14, 2014 7:57:57 GMT
So what should it be folks? Triabusa is now in production which gives one alternative. We're building an automatic tR1ke based on a 80bhp Aprilia Mana engine for a disabled chap and it will still have 250bhp/tonne. 100bhp is plenty in a tR1ke but when you have 150/170bhp and nail it on a dry road... there is nothing quite like it. We would welcome an alternative powerplant suggestion, but we can go from 1998 to 2006 R1 model years with only 2 variations in the chassis and we need this kind of flexibility to make it viable for production. A one off installation will ad about £1000 on to the price of your vehicle which in some ways defeats the object of changing the R1 formula. RTR. What would it be? I don't catch your thoughts here. Do you want tR1ke owners to buy a 2nd kit or do you like input from the new costumers? You have 3 donor engines to chose from now and you are open to add a 4th option free of charge? Tr1ke owners have posted possible alternatives but I may assume this isn't what you are looking for? You need to show what you are looking for or we might not able to help you with this. Best suggestion for now is to change the chasis to european standards because I think out of the 40 different approaches I made in my build I wished a few fundamental changes could make the tR1ke even better as it is now. Making an evaluation for a new design might be food for thoughts  Kind regards,Erik |
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Post by elder on Aug 17, 2014 9:22:29 GMT
So what should it be folks?.................................... We would welcome an alternative powerplant suggestion.......................... RTR. I hope that you mean an alternative donor rather than an alternative powerplant. Sourcing the cycle parts from an R1 & the power plant from something else does not, in my opinion, make much sense.
So lets think. 1. We need a long production run with interchangeable parts 2. It would be nice if a choice of motor sizes were available 3. It needs to have been a popular motorcycle for availability/ parts etc 4. It should be reasonable priced 5. It should have been in production & popular recently to give a healthy future for the kit & users. 6. It must be desirable.
As I think I said when I started this thread to me this screams BMW. They meet all the above criteria and are a very high quality product. I would hope that the K & R series are similar enough that your design could be flexible - but if not then either of them meets the criteria. |
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Post by erik on Aug 17, 2014 22:14:03 GMT
Ducati meets these criteria too |
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Post by elder on Aug 18, 2014 9:45:43 GMT
Personally I wouldn't go Ducati. The Ducatis that I have ridden have tended to have power pulse problems that made them snatch prone - interestingly the same motor in an Aprilia with a cush drive was lovely. The Morgan has the same problem in my opinion (yes I have driven one).
I stick with BMW. Lots about, relatively cheap, well made, lots of spares, reliable, shaft drive and I think they might enlarge the market for the car.
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Post by Deleted on Aug 21, 2014 17:32:24 GMT
V Twin SP1 is my suggestion, just like the option for the T-Rex, much more grunt and engine braking
Sent from my Nexus 5 using proboards
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Post by edwinwl on Aug 22, 2014 12:21:14 GMT
So what should it be folks?.................................... We would welcome an alternative powerplant suggestion.......................... RTR. As I think I said when I started this thread to me this screams BMW. They meet all the above criteria and are a very high quality product. I would hope that the K & R series are similar enough that your design could be flexible - but if not then either of them meets the criteria. BMW motorbike engines for donor: R series are air cooled, so you have to find a solution the engine gets cooled. (directing cooling air) Because of shaft drive gearing ration cannot be changed easily.(R and K series) Older models have mechanical dashboard. So if you want to use old dashboard you have to connect speed and rpm mechanically. Only R1200 (2004 and on) have electronic dashboard. For K series I am not sure. Almost all newer BMW motorbike have advanced electronic systems. CANbus, ABS etc. For using the engine into a kitcar you need to handle these systems. By passing it, re-program the CPU or something else. An R1100R would make a great drive train exept handling of the cooling.  |
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Post by Deleted on Aug 22, 2014 12:42:20 GMT
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Post by erik on Aug 22, 2014 20:01:07 GMT
Airscoops may work for air cooled engines for a single person vehicle. The scoops can be integrated in the exoskeleton chasis design...
fluid cooled engines need the rad and coolant hoses in front of the driver wich adds quite a bit of dead weight.
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Post by edwinwl on Aug 22, 2014 22:44:41 GMT
Expensive solution would be:
R1100 engine in front where the cooling air is.
Connected to this engine a differential that drives both front wheels.
Rear wheel only has to follow the front two wheels.
All technique is at the front. Only break line and rear light goes trough the center tunnel to the rear.
Front engine and drive has advantages:
On impact the engine goes in first.
When accelerating out of corners to enthusiastic inner front wheel will spin excessive power away.
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Post by r1ckbuilder on Aug 23, 2014 7:11:18 GMT
Morning all,
I haven't even driven my TR1ke in anger yet as I'm only taking it to RTR this Friday to hopefully get through the test. I am reading this thread with interest though as while I've been searching the web for R1 bit and pieces I've have come across several websites that make me a bit nervous -
www.locostbuilders.co.uk/viewthread.php?tid=113841
I like the idea of a R1 engine but the thought of it melting is unappealing. It may just be a 5VY issue, the type of car it's in or track lunatics pushing it too much. Although not my main intention the thought of being a track day lunatic sounds like a nice option if I feel inclined but there's now a bit of worry.
if the worse did ever happen, I'd probably be a bit 'once bitten' and very interested in an alternative. |
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